Earth has had an unknown traveling companion since December. Initially hidden in the daytime sky, 2008 EA9 slowly passed to Earth's outside and into our night, where the Mt. Lemmon Survey caught it early last Thursday (see today's MPEC 2008-E79 below). It is calculated to have been within ten lunar distances (LD) of Earth from Dec. 28th until yesterday, coming to 0.6 LD from the Moon on Feb. 4th and 1.6 LD from Earth the day before. This illustration is an A/CC composite from JPL's Orbit Viewer. See more details.
Contents on 10 March '08
- IAU Minor Planet Center
- NEOCP Activity -- 19 listings: 8 new, 11 updated
- New MPECs -- fourteen MPECs
- Observers -- 81 observing facilities
- Impact Risk Monitoring -- eight objects
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
- Earth's Busy Neighborhood Traffic Report
- Ephemerides for risk-rated and nearby objects
- Old & new CRT Archive
- Old News Archive & Small Objects Archive
The latest A/CC news is available via framed access,
RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.
Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.
NEOCP Activity on 10 March '08
The MPC's NEO Confirmation Page has 19 listings: 8 new, 11 updated
When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had eight new and eleven updated listings. Of these, fourteen were "one nighters." So far The Tracking News has counted a total of 33 objects listed on the NEOCP at some point today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.
New MPECs on 10 March '08
Minor Planet Electronic Circulars
As of last check at 2354 UTC, there have been fourteen MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2008-E73 time-stamped "03:02 UT" - Comet C/2008 A1 (McNaught) - see below
- MPEC 2008-E74 time-stamped "03:05 UT" - Comet P/2008 A2 (LINEAR) - see below
- MPEC 2008-E75 time-stamped "03:09 UT" - Comet C/2008 C1 (Chen-Gao) - see below
- MPEC 2008-E76 time-stamped "03:12 UT" - Comet C/2008 E1 (Catalina) - see below
- MPEC 2008-E77 time-stamped "03:27 UT" - Observations of Comets - see below
- MPEC 2008-E78 time-stamped "06:09 UT" - Daily Orbit Update - see below
- MPEC 2008-E79 time-stamped "15:28 UT" - 2008 EA9 - see below
- MPEC 2008-E80 time-stamped "17:43 UT" - 2008 EB9 - see below
- MPEC 2008-E81 time-stamped "18:03 UT" - 2008 EE9 - see below
- MPEC 2008-E82 time-stamped "19:31 UT" - 2008 EM8 - see below
- MPEC 2008-E83 time-stamped "20:13 UT" - 2008 EF9 - see below
- MPEC 2008-E84 time-stamped "20:24 UT" - 2008 EG9 - see below
- MPEC 2008-E85 time-stamped "20:45 UT" - 2008 EJ9 - see below
- MPEC 2008-E86 time-stamped "20:49 UT" - 2008 EM9
MPEC 2008-E86 - "20:49 UT" - 2008 EM9
- K08E09M 2008 EM9 (q=0.277 AU, H=17.2 ~1.23 km) was discovered at 1747 UT on 9 March by the Siding Spring Survey (SSS), which observed it at March 9.74-80p5 and 10.52-53p2. The discovery was confirmed by Sabino Canyon Obs. (March 10.38p3) and Mt. John Obs. (March 10.38-39p5).
MPEC 2008-E85 - "20:45 UT" - 2008 EJ9
- K08E09J 2008 EJ9 (i=40.8°, H=20.9 ~224m) was discovered at 0650 UT on 9 March by the Catalina Sky Survey (CSS), which observed it at March 9.29-31p4. The discovery was confirmed by LINEAR (March 9.34-39p5), Great Shefford Obs. (March 9.88p2), KLENOT (March 9.94p5), the Spacewatch 1.8m telescope (March 10.21-22p3), Sabino Canyon Obs. (March 10.29-30p3), the Mt. Lemmon Survey (MLS) (March 10.32-34p4), and Mt. John Obs. (March 10.52-53p4).
MPEC 2008-E84 - "20:24 UT" - 2008 EG9
- K08E09G 2008 EG9 (small asteroid, Earth MOID=5.6 LD, H=25.2 ~31m) was discovered at 0548 UT on 9 March by MLS, which observed it at March 9.24-29p8 at V=20.6-22.2 and 10.32-34p4 at V=21.4-21.8. The discovery was confirmed by Spacewatch 1.8m (March 10.19-20p2 at V=22.5).
MPEC 2008-E83 - "20:13 UT" - 2008 EF9
- K08E09F 2008 EF9 (small asteroid, H=22.5 ~107m) was discovered at 0523 UT on 8 March by LINEAR, which observed it at March 8.22-27p5 and 9.23-26p4. The discovery was confirmed by MLS (Feb. 10.38-41p4 at V=21.2-22.4 & March 9.19-21p4 at V=19.3-19.5), KLENOT (March 8.88p7), Klet Obs. (March 8.92p4), Astronomical Research Obs. (ARO) (March 9.13p3), Grasslands Obs. (March 9.18p2), Red Barn Obs. (March 9.19-21p3), Great Shefford Obs. (March 9.82p3), and Alter Satzberg Obs. (March 9.89-91p4).
MPEC 2008-E82 - "19:31 UT" - 2008 EM8
- K08E08M 2008 EM8 (H=18.9 ~562m) was discovered at 1027 UT on 6 March by MLS, which observed it at March 6.44-45p4. The discovery was confirmed by Naef Obs. (March 8.91-94p3), La Canada Obs. (March 8.92-98p5), and Pla D'Arguines Obs. (March 8.00-01p6).
MPEC 2008-E81 - "18:03 UT" - 2008 EE9
- K08E09E 2008 EE9 (small asteroid, H=22.4 ~112m) was discovered at 1532 UT on 8 March by SSS, which observed it at March 8.65-68p4, 8.80p2, 9.45-46p2, 9.67-68p2, 9.79p1, and 10.51-52p2. The discovery was confirmed by Mt. John Obs. (March 9.36-37p4 & 10.35p4), KLENOT (March 9.98p6), CSS (March 10.34p4), and Sabino Canyon Obs. (March 10.34p3).
MPEC 2008-E80 - "17:43 UT" - 2008 EB9
- K08E09B 2008 EB9 (H=20.3 ~295m) was discovered at 0414 UT on 8 March by the Spacewatch 0.9m telescope, which observed it at March 8.18-20p3 and 10.17-20p3. The discovery was confirmed by Farpoint Obs. (March 8.25-27p4), McDonald Obs. (March 8.27-28p3), KLENOT (March 8.85-86p4 & 9.90p3), ARO (March 9.11-12p3), Spacewatch 1.8m (March 9.12-13p3 & 10.36-37p2), MLS (March 9.20-21p4), Great Shefford Obs. (March 9.84-86p3), and Sabino Canyon Obs. (March 10.27-29p3).
MPEC 2008-E79 - "15:28 UT" - 2008 EA9
- K08E09A 2008 EA9 (risk-listed, Earth MOID=0.5 LD, H=27.7 ~10m) was discovered at 0943 UT on 6 March by MLS, which observed it at March 6.41-47p7, 7.33-35p4, 8.35-37p4, and 10.38-41p4. The discovery was confirmed by Spacewatch 1.8m (March 8.43-44p3). This object was within ten lunar distances (LD) of Earth, reaching 8.7 LD on 5 March.
<< DOU on 10 Mar. '08 >> MPEC 2008-E78 - "06:09 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08E08D 2008 ED8 (small asteroid, arc=2 days, H=24.1 ~51m) from Great Shefford Obs. (March 9.83p3 & 9.91p3), Alter Satzberg Obs. (March 9.84p5), Stammersdorf Obs. (March 9.89-94p15), and Klet Obs. (March 9.99-00p17)
- K08E07R 2008 ER7 (arc=3 days, H=20.3 ~295m) from Spacewatch 1.8m (March 9.33-34p3)
- K08E07O 2008 EO7 (arc=3 days, H=20.1 ~323m) from Spacewatch 1.8m (March 9.34-35p3)
- K08E07M 2008 EM7 (arc=4 days, H=21.5 ~170m) from Andrushivka Obs. (March 6.93-94p6), Spacewatch 1.8m (March 9.23-24p3), and KLENOT (March 9.91-92p4)
- K08E06N 2008 EN6 (arc=4 days, H=19.2 ~490m) from Spacewatch 1.8m (March 9.24-25p3)
- K08E05X 2008 EX5 (small asteroid, arc=5 days, H=23.7 ~62m) from Andrushivka Obs. (March 4.87-90p5) and Spacewatch 1.8m (March 9.32-33p3)
- K08D04A 2008 DA4 (small asteroid, arc=11 days, H=23.9 ~56m) from Spacewatch 1.8m (March 9.27-28p3)
- Observations of recently (no longer) risk-listed objects
- K08E07Z 2008 EZ7 (small asteroid, arc=2 days, H=27.0 ~13m) from Vasiliy Rumyantsev via Crimean Astrophysical Obs. (CrAO) (March 8.92-98p100) and Great Shefford Obs. (March 9.15-21p8)
- K08D05G 2008 DG5 (arc=10 days, H=19.6 ~407m) from Desert Moon Obs. (March 9.24-28p3)
- Observations of small asteroids (H>22.0)
- K08E07Q 2008 EQ7 (arc=2 days, H=22.5 ~107m) from Andrushivka Obs. (March 6.85p4 & 8.05-06p7)
- K08E07P 2008 EP7 (arc=2 days, H=23.5 ~68m) from Andrushivka Obs. (March 6.91-92p6 & 8.07-08p5)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K08D05L 2008 DL5 (arc=10 days, H=21.8 ~148m) from Desert Moon Obs. (March 9.42-43p3)
- Observations of other objects
- K08E07T 2008 ET7 (arc=2 days, H=20.9 ~224m) from Andrushivka Obs. (March 8.03-04p7)
- K08E07N 2008 EN7 (arc=1 day, H=20.4 ~282m) from Andrushivka Obs. (March 6.87-90p6)
- K08E06P 2008 EP6 (arc=3 days, H=19.4 ~446m) from SSS (March 8.53p1)
- K08E00J 2008 EJ (i=39.7°, arc=8 days, H=20.1 ~323m) from Desert Moon Obs. (March 9.30-34p3)
- K08D00W 2008 DW (arc=12 days, H=21.5 ~170m) from CSS (March 9.29-31p4) and Desert Moon Obs. (March 9.36-40p3)
- K07R19X 2007 RX19 (i=40.4°, arc=178 days, H=18.5 ~676m) from Klet Obs. (March 9.86-87p7)
- K06D62U 2006 DU62 (arc=3 opp, H=18.0 ~851m) from LINEAR (March 9.29-33p4) and Klet Obs. (March 9.85p5)
- K05R34D 2005 RD34 (arc=2 opp, H=20.2 ~309m) from LINEAR (March 9.34-39p5)
- K05E70K 2005 EK70 (arc=4 opp, H=17.4 ~1.12 km) from LINEAR (March 9.17-21p4)
- K04D02G 2004 DG2 (arc=4 opp, H=18.6 ~645m) from MLS (March 9.17-19p4)
- K02T66D 2002 TD66 (arc=4 opp, H=20.3 ~295m) from Thousand Oaks Obs. (March 9.34p1 & 9.40-43p2)
- J94A01W 1994 AW1 (arc=3 opp, H=17.6 ~1.02 km) from Las Campanas Obs. (March 8.08-12p14 & 9.01-10p25)
- G3902 163902 2003 SW222 from MLS (March 9.11-12p4)
- F3591 153591 2001 SN263 from Airali Obs. (Feb. 22.94-95p4, 23.94-95p4 & 24.94p4) and Terskol Obs. (March 7.69-70p7 & 7.80-85p14)
- D8175 138175 2000 EE104 from Inastars Obs. (March 9.00p4)
- 96189 96189 1991 NT3 from LINEAR (March 9.22-26p4)
- 86324 86324 1999 WA2 from MLS (March 9.13-15p4)
- 68359 68359 2001 OZ13 from CSS (March 9.19-20p4)
- 54686 54686 2001 DU8 from Balzaretto Obs. (March 9.79-82p4)
- 09400 9400 1994 TW1 from Spacewatch 0.9m (March 9.39-43p3)
- 06037 6037 1988 EG from CSS (March 9.16-18p4)
- 05836 5836 1993 MF from Spacewatch 0.9m (March 9.40-43p3)
- 05646 5646 1990 TR from Spacewatch 0.9m (March 9.29-32p3)
- 05587 5587 1990 SB from LINEAR (March 9.29-32p4)
- 04954 4954 Eric (1990 SQ) from CSS (March 9.19-21p4)
- 01036 1036 Ganymed (1924 TD) from Mt. Tuffley Obs. (March 9.86p3)
MPEC 2008-E77 - "03:27 UT" - Observations of Comets
- PK08E020 P/2008 E2 from CSS (March 3.47-49p4), Bergen-Enkheim Obs. (March 3.00-04p4), Great Shefford Obs. (March 4.07p3), Sabino Canyon Obs. (March 4.36p3), Junk Bond Obs. (March 4.45-51p4), McDonald Obs. (March 4.48-49p3), Vitebsk Obs. (March 8.07p3), and Nazaret Obs. (March 9.10-11p3)
- CK07Y020 C/2007 Y2 (McNaught) from North Ryde Obs. (March 3.47-51p2, 6.45p1 & 8.44-47p2) and Kambah Obs. (March 6.52-53p2)
- CK07Y010 C/2007 Y1 (LINEAR) from Moriyama Obs. (Feb. 28.63-65p2), Ageo Obs. (March 2.69-70p3), and Rezman Obs. (March 2.86-90p2)
- CK07W010 C/2007 W1 (Boattini) from Hiratsuka Obs. (Feb. 29.64-65p3), Xingming Obs. (Feb. 29.74-78p4), Ageo Obs. (March 1.65-66p2), Monte Deva Obs. (March 2.11-12p5), La Vara Obs. (March 5.98p2), Szamotuly-Galowo Obs. (March 6.03-04p3), La Murta Obs. (March 7.96p3 & 8.97p3), Vitebsk Obs. (March 8.05p2), Atlante Obs. (March 9.03-04p3), Kambah Obs. (March 9.63p2), and Klet Obs. (March 9.96-97p6)
- PK07V11Q P/2007 VQ11 (CATALINA) from CSS (March 4.16-17p4) and Modra Obs. (March 5.78-79p2)
- CK07U010 C/2007 U1 (LINEAR) from LINEAR (Feb. 29.16-20p5) and Schiaparelli Obs. (March 2.84p1 & 2.90p1)
- CK07T050 C/2007 T5 (Gibbs) from Schiaparelli Obs. (Feb. 24.07p1 & 24.13p1), La Vara Obs. (Feb. 26.02p1), Rezman Obs. (March 2.85-89p3), and El Olivo Obs. (March 7.95p3)
- CK07T010 C/2007 T1 (McNaught) from Moriyama Obs. (March 5.50p1), Ageo Obs. (March 8.43p3 & 9.42p2), and Kambah Obs. (March 9.54p2)
- CK07S020 C/2007 S2 (Lemmon) from Schiaparelli Obs. (Feb. 24.05p1 & 24.10p1), Rezman Obs. (March 2.86-90p3), LINEAR (March 4.22-26p5), and Modra Obs. (March 6.79-80p3)
- CK07Q030 C/2007 Q3 (Siding Spring) from North Ryde Obs. (March 8.39-41p2 & 9.42-44p2)
- CK07M020 C/2007 M2 (Catalina) from Hiratsuka Obs. (Feb. 29.60p3), Ametlla del Valles Obs. (March 3.05-07p3), CSS (March 3.32-34p4), MLS (March 4.39-41p4), Purple Mtn. Obs. XuYi Station (March 4.73-81p4), Modra Obs. (March 6.14p3), Monte Deva Obs. (March 7.07-09p3), La Murta Obs. (March 7.98p3), LINEAR (March 8.33-37p5), and Atlante Obs. (March 9.06-07p3)
- CK07G010 C/2007 G1 (LINEAR) from Smolyan Obs. (Feb. 3.15-18p6), Ageo Obs. (Feb. 24.76p2), Jarnac Obs. (March 2.52-54p3), and Atlante Obs. (March 9.15-17p3)
- CK07D030 C/2007 D3 (LINEAR) from Ageo Obs. (March 2.63-64p2) and Modra Obs. (March 6.82-83p3)
- CK07D010 C/2007 D1 (LINEAR) from Hiratsuka Obs. (Feb. 29.58-59p3), Purple Mtn. Obs. XuYi Station (March 1.73-76p4), and Atlante Obs. (March 8.90-91p3)
- PK07C020 P/2007 C2 (Catalina) from Cantabria Obs. (Jan. 20.02-06p3 & March 2.04-08p3), Schiaparelli Obs. (Feb. 24.01p1 & 24.08p1), and Modra Obs. (March 6.76-77p2 & 8.81p2)
- CK07B020 C/2007 B2 (Skiff) from Smolyan Obs. (Feb. 5.05-07p2), Hiratsuka Obs. (Feb. 29.61-62p3), Purple Mtn. Obs. XuYi Station (Feb. 29.84-89p4), Cantabria Obs. (March 2.15-20p3), Ametlla del Valles Obs. (March 3.08-10p3), Borken Obs. (March 5.08-09p5), Monte Deva Obs. (March 7.02-05p5), La Murta Obs. (March 7.96-97p3 & 8.96p3), Montcabre Obs. (March 7.98-99p3), Vitebsk Obs. (March 8.00-01p3), Nazaret Obs. (March 8.01-03p3), Atlante Obs. (March 8.98-00p3), and Malaga Obs. (March 9.06-07p3)
- CK06X01A C/2006 XA1 (LINEAR) from Kambah Obs. (March 4.66-67p2 & 9.66-67p2)
- CK06W030 C/2006 W3 (Christensen) from Smolyan Obs. (Feb. 3.03-04p6), Lumezzane Obs. (Feb. 10.77-78p4), Schiaparelli Obs. (Feb. 23.91p1 & 23.96p1), Szamotuly-Galowo Obs. (March 5.83p2), La Vara Obs. (March 5.95p1), Monte Deva Obs. (March 6.01p4), Rodeno Obs. (March 7.82-83p3), Montcabre Obs. (March 7.84-85p3), Yatsuka Obs. (March 8.53p2), Los Altos de Arguineguin Obs. (March 8.88p2), and La Murta Obs. (March 8.99p3)
- CK06S050 C/2006 S5 (Hill) from Schiaparelli Obs. (Feb. 24.02p1 & 24.08p1), Ametlla del Valles Obs. (March 2.80p1 & 2.88-89p3), Rezman Obs. (March 2.86-90p3), Nazaret Obs. (March 3.96-98p3), Linceo Obs. (March 5.83-84p3), Szamotuly-Galowo Obs. (March 5.88p3), La Vara Obs. (March 5.00-01p3), Monte Deva Obs. (March 6.08-10p3), Chante-Perdrix Obs. (March 7.87p3), Vitebsk Obs. (March 7.88-89p3), Los Altos de Arguineguin Obs. (March 8.92p1), and La Murta Obs. (March 8.99-00p3)
- CK06Q010 C/2006 Q1 (McNaught) from Auckland Obs. (Feb. 26.41-42p3), Kambah Obs. (March 6.54p2), and North Ryde Obs. (March 8.59-60p2 & 9.46-47p2)
- CK06K040 C/2006 K4 (NEAT) from Auckland Obs. (Feb. 26.40-41p3) and North Ryde Obs. (March 8.67-69p2)
- CK06E010 C/2006 E1 (McNaught) from Kambah Obs. (March 6.43-47p2 & 9.49-50p2)
- PK05SL6B P/2005 SB216 (LONEOS) from Ametlla del Valles Obs. (Feb. 11.96-97p3 & March 2.98p2), CSS (Feb. 29.22-24p4), and Rezman Obs. (March 2.85-89p3)
- CK05L030 C/2005 L3 (McNaught) from Smolyan Obs. (Feb. 3.13-14p3 & 5.12-19p19), Szamotuly-Galowo Obs. (March 6.17p2), and Atlante Obs. (March 9.18-19p3)
- CK05E020 C/2005 E2 (McNaught) from Schiaparelli Obs. (Feb. 10.01p1, 10.12p1, March 2.96p1 & 3.08p1)
- CK02V94Q C/2002 VQ94 (LINEAR) from the SZTE Asteroid Program (SZTE) (Feb. 25.15-16p4), Ageo Obs. (March 1.77-78p2), and Ametlla del Valles Obs. (March 3.10-11p3)
- 0192P 192P/Shoemaker-Levy 1 from Schiaparelli Obs. (Feb. 23.81-82p2) and Ageo Obs. (March 8.46p2 & 9.45p2)
- 0191P 191P/McNaught from LINEAR (Feb. 26.10-15p5 & March 4.10-15p5) and CSS (March 9.16-18p4)
- 0188P 188P/LINEAR-Mueller from Buchloe Obs. (Feb. 24.79p3 & March 9.78p3)
- 0183P 183P/Korlevic-Juric from LONEOS (March 1.37-45p4), Ametlla del Valles Obs. (March 3.04p3), CSS (March 3.22-24p4), Kiev Comet Station (March 6.99-02p7), and LINEAR (March 8.28-32p5)
- 0180P 180P/NEAT from LONEOS (March 1.27-35p4), Puzol Obs. (March 2.01-02p2), Rezman Obs. (March 2.85-89p3), Ametlla del Valles Obs. (March 2.95-03p5), Szamotuly-Galowo Obs. (March 5.97p2), Paus Obs. (March 6.87-89p2), and Atlante Obs. (March 6.97p3)
- 0173P 173P/Mueller 5 from Smolyan Obs. (Feb. 3.06-07p3 & 4.99-02p5), Schiaparelli Obs. (Feb. 24.05p1), Szamotuly-Galowo Obs. (March 5.98p1), and Nazaret Obs. (March 6.00-01p3)
- 0172P 172P/Yeung from LONEOS (March 1.28-36p4), Ametlla del Valles Obs. (March 2.96-98p4), MLS (March 4.32-35p4), Purple Mtn. Obs. XuYi Station (March 4.51-59p4), and Ottmarsheim Obs. (March 5.95-97p3)
- 0166P 166P/NEAT from Schiaparelli Obs. (Feb. 8.01p1, 8.10p1 & March 2.97p1)
- 0148P 148P/Anderson-LINEAR from Schiaparelli Obs. (Feb. 23.82-83p2) and MLS (March 6.10-11p4)
- 0124P 124P/Mrkos from Smolyan Obs. (Feb. 4.95-97p5), El Olivo Obs. (Feb. 29.98p3), Rezman Obs. (March 2.85-88p3), Atlante Obs. (March 6.92-93p3), Mt. Tuffley Obs. (March 7.87-88p3 & 9.83p3), Carmelita Obs. (March 8.01-02p3), and Klet Obs. (March 9.92-94p9)
- 0110P 110P/Hartley 3 from Cantabria Obs. (Jan. 27.82-85p3), Moriyama Obs. (Feb. 28.59p2), Malaga Obs. (March 2.84-86p3), Tucci Obs. (March 2.86-88p3), LINEAR (March 5.16-21p5), La Vara Obs. (March 6.88-89p3), Monte Deva Obs. (March 6.90-91p4), and Puzol Obs. (March 7.82p1)
- 0093P 93P/Lovas 1 from La Murta Obs. (Feb. 27.80-81p3), Ageo Obs. (March 2.58p2), MLS (March 3.11-12p4), Szamotuly-Galowo Obs. (March 5.77-78p3), La Vara Obs. (March 5.89-90p3), LINEAR (March 7.10-15p5), Mt. Tuffley Obs. (March 7.89-90p3 & 9.84-85p2), and Yatsuka Obs. (March 8.49p2)
- 0079P 79P/du Toit-Hartley from Schiaparelli Obs. (Feb. 23.98p1 & 24.05p1), Ametlla del Valles Obs. (March 2.85-87p3), and LINEAR (March 4.16-21p5)
- 0074P 74P/Smirnova-Chernykh from Smolyan Obs. (Feb. 3.86-87p3), Schiaparelli Obs. (Feb. 23.94p1 & 23.99p1), and LINEAR (March 5.11-16p5)
- 0070P 70P/Kojima from Lumezzane Obs. (Feb. 11.04-05p4), Hiratsuka Obs. (Feb. 29.63p3), Purple Mtn. Obs. XuYi Station (Feb. 29.84-89p4), Goodricke-Pigott Obs. (March 1.35-37p2), Cantabria Obs. (March 2.14-17p3), Ametlla del Valles Obs. (March 3.08-10p3), Monte Deva Obs. (March 7.02-05p5), LINEAR (March 7.33-38p5), Montcabre Obs. (March 7.98-99p3), Carmelita Obs. (March 7.99-00p3), Nazaret Obs. (March 8.01-03p3), Vitebsk Obs. (March 8.03-04p4), Atlante Obs. (March 9.00-02p3), and Malaga Obs. (March 9.03p1)
- 0065P 65P/Gunn from Smolyan Obs. (Feb. 4.90-93p7), Schiaparelli Obs. (Feb. 24.06p1 & 24.14p1), El Olivo Obs. (Feb. 29.92-93p3), Rezman Obs. (March 2.86-87p2), Ametlla del Valles Obs. (March 2.92p3), Malaga Obs. (March 3.02p1), Szamotuly-Galowo Obs. (March 5.87p1), Nazaret Obs. (March 5.93-97p4 & 9.03-05p3), Atlante Obs. (March 6.89-90p3), and Vitebsk Obs. (March 7.92-93p2)
- 0050P 50P/Arend from Kiev Comet Station (Feb. 28.93-95p4), LINEAR (March 1.11-15p5), and Szamotuly-Galowo Obs. (March 5.80-81p3)
- 0046P 46P/Wirtanen from La Murta Obs. (Feb. 26.81p3, 27.81p3 & March 8.97-98p3), Tucci Obs. (March 2.84p3), Xingming Obs. (March 3.61-63p2 & 5.60-63p3), Szamotuly-Galowo Obs. (March 5.76p3), Gualba Obs. (March 5.79-80p3 & 6.79p1), Stammersdorf Obs. (March 5.82-84p5), La Vara Obs. (March 5.85-86p3 & 6.84p3), Ventilla Obs. (March 5.89-90p3), Monte Deva Obs. (March 5.93p5 & 6.86p5), Nazaret Obs. (March 6.87p3 & 7.84-85p3), Chante-Perdrix Obs. (March 7.81-82p3), El Olivo Obs. (March 7.83-84p3), Rodeno Obs. (March 7.84p3), Yatsuka Obs. (March 8.47p3), and Malaga Obs. (March 8.93p3)
- 0029P 29P/Schwassmann-Wachmann 1 from Cantabria Obs. (Jan. 27.86-89p3), Smolyan Obs. (Feb. 4.83-88p6), La Murta Obs. (Feb. 27.79p3, March 7.95p3 & 8.94-95p3), Moriyama Obs. (Feb. 28.60-61p2 & March 5.55p2), Gualba Obs. (March 2.78p1, 5.79p1 & 7.91p1), Malaga Obs. (March 2.89p3 & 8.96-98p3), Montcabre Obs. (March 5.88-89p3, 6.88-89p3 & 7.82p2), Stammersdorf Obs. (March 5.89-90p3 & 9.85-86p3), La Vara Obs. (March 5.91-93p3 & 6.91-92p3), Nazaret Obs. (March 6.91-98p3, 7.99-00p3 & 8.95-98p3), and El Olivo Obs. (March 7.90-92p3)
- 0022P 22P/Kopff from Purple Mtn. Obs. XuYi Station (March 4.48-58p4), Vitebsk Obs. (March 7.95-96p4), and Nazaret Obs. (March 9.92-94p2)
- 0017P 17P/Holmes from Smolyan Obs. (Feb. 4.77-80p6), La Murta Obs. (Feb. 27.82p3), El Olivo Obs. (Feb. 29.84p3), Moriyama Obs. (March 5.51p2), Szamotuly-Galowo Obs. (March 5.79-80p3), Stammersdorf Obs. (March 5.86p3 & 9.80-81p3), Nazaret Obs. (March 5.86-89p3, 7.96-98p3, 8.91-93p3 & 9.85-88p3), La Vara Obs. (March 5.88-89p3), Kiev Comet Station (March 6.92-94p5), Montcabre Obs. (March 7.83p3), Hamamatsu-Yuto Obs. (March 8.45-47p4), and Calarreona Obs. (March 9.82p1)
- 0008P 8P/Tuttle from Kambah Obs. (March 6.50p2 & 9.54p2) and North Ryde Obs. (March 8.48-49p2)
- 0007P 7P/Pons-Winnecke from Rezman Obs. (March 2.85-89p3), Paus Obs. (March 2.95-98p2), Nazaret Obs. (March 3.92-93p3 & 9.01-02p3), Szamotuly-Galowo Obs. (March 5.94p2), and Vitebsk Obs. (March 7.98-99p3)
MPEC 2008-E76 - "03:12 UT" - Comet C/2008 E1 (Catalina)
- CK08E010 C/2008 E1 (Catalina) (i=34.3°, q=4.773 AU, TP=2008 Nov. 5.770 TT) from Junk Bond Obs. (March 4.12-19p4), Kiev Comet Station (March 6.75-78p6), Montana Blanca Obs. (March 6.85-89p3), Nazaret Obs. (March 8.86-88p3), and Buchloe Obs. (March 9.79p3)
MPEC 2008-E75 - "03:09 UT" - Comet C/2008 C1 (Chen-Gao)
- CK08C010 C/2008 C1 (Chen-Gao) (i=61.8°, q=1.262 AU, TP=2008 Apr. 16.8516 TT) from La Murta Obs. (Feb. 27.80p3 & March 8.98-99p3), Moriyama Obs. (Feb. 28.57-58p2 & March 5.53-54p2), Kiev Comet Station (Feb. 28.88-92p6), Guadarrama Obs. (March 2.79-80p2), Modra Obs. (March 5.76-77p4), Stammersdorf Obs. (March 5.77-81p5), Szamotuly-Galowo Obs. (March 5.82p3), La Vara Obs. (March 5.94-95p3 & 6.86p3), Monte Deva Obs. (March 5.99-00p5 & 6.88-89p5), Chante-Perdrix Obs. (March 7.81p2), Rodeno Obs. (March 7.83-84p3), Yatsuka Obs. (March 8.47-48p3), and Ageo Obs. (March 8.49p3)
MPEC 2008-E74 - "03:05 UT" - Comet P/2008 A2 (LINEAR)
- PK08A020 P/2008 A2 (LINEAR) (q=1.305 AU, Q=5.084 AU, TP=2008 June 12.0334 TT) from Modra Obs. (March 5.81-82p2) and Kiev Comet Station (March 6.84-86p5)
MPEC 2008-E73 - "03:02 UT" - Comet C/2008 A1 (McNaught)
- CK08A010 C/2008 A1 (McNaught) (i=82.6°, q=1.074 AU, TP=2008 Sept. 29.1990 TT) from North Ryde Obs. (March 3.53p2 & 8.50-51p2)
Observers on 10 March '08
A total of 81 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| 349 | Ageo Obs. in Japan, 9 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2007 Y1, C/2007 W1, C/2007 T1, C/2007 G1, C/2007 D3, C/2002 VQ94, 192P, 93P |
| 169 | Airali Obs. in Italy, 1 in MPEC 2008-E78 -- 153591 |
| B03 | Alter Satzberg Obs. in Austria, 2 in MPECs 2008-E78 & 2008-E83 -- 2008 EF9, 2008 ED8 |
| B37 | Ametlla del Valles Obs. in Spain, 11 in MPEC 2008-E77 -- C/2007 M2, C/2007 B2, C/2006 S5, P/2005 SB216, C/2002 VQ94, 183P, 180P, 172P, 79P, 70P, 65P |
| A50 | Andrushivka Obs. in the Ukraine, 6 in MPEC 2008-E78 -- 2008 EX5, 2008 ET7, 2008 EQ7, 2008 EP7, 2008 EN7, 2008 EM7 |
| H55 | Astronomical Research Obs. (ARO) in Illinois, 2 in MPECs 2008-E80 & 2008-E83 -- 2008 EF9, 2008 EB9 |
| J51 | Atlante Obs. in the Canary Islands, 10 in MPEC 2008-E77 -- C/2007 W1, C/2007 M2, C/2007 G1, C/2007 D1, C/2007 B2, C/2005 L3, 180P, 124P, 70P, 65P |
| 467 | Auckland Obs. in New Zealand, 2 in MPEC 2008-E77 -- C/2006 Q1, C/2006 K4 |
| A81 | Balzaretto Obs. in Italy, 1 in MPEC 2008-E78 -- 54686 |
| A74 | Bergen-Enkheim Obs. in Germany, 1 in MPEC 2008-E77 -- P/2008 E2 |
| B59 | Borken Obs. in Germany, 1 in MPEC 2008-E77 -- C/2007 B2 |
| 215 | Buchloe Obs. in Germany, 2 in MPECs 2008-E76 & 2008-E77 -- C/2008 E1, 188P |
| J79 | Calarreona Obs. in Spain, 1 in MPEC 2008-E77 -- 17P |
| J96 | Cantabria Obs. in Spain, 5 in MPEC 2008-E77 -- P/2007 C2, C/2007 B2, 110P, 70P, 29P |
| B20 | Carmelita Obs. in Spain, 2 in MPEC 2008-E77 -- 124P, 70P |
| 703 | Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2008-E77, 2008-E78, 2008-E81 & 2008-E85 -- 2008 EJ9, 2008 EE9, P/2008 E2, 2008 DW, P/2007 VQ11, C/2007 M2, P/2005 SB216, 68359, 6037, 4954, 191P, 183P |
| A77 | Chante-Perdrix Obs. in France, 3 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2006 S5, 46P |
| 0952 | Vasiliy Rumyantsev via Crimean Astrophysical Obs. in the Ukraine, 1 in MPEC 2008-E78 -- 2008 EZ7 |
| 448 | Desert Moon Obs. in New Mexico, 4 in MPEC 2008-E78 -- 2008 EJ, 2008 DW, 2008 DL5, 2008 DG5 |
| J36 | El Olivo Obs. in Spain, 6 in MPEC 2008-E77 -- C/2007 T5, 124P, 65P, 46P, 29P, 17P |
| 734 | Farpoint Obs. in Kansas, 1 in MPEC 2008-E80 -- 2008 EB9 |
| 683 | Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-E77 -- 70P |
| 651 | Grasslands Obs. in Arizona, 1 in MPEC 2008-E83 -- 2008 EF9 |
| J95 | Great Shefford Obs. in England, 6 in MPECs 2008-E77, 2008-E78, 2008-E80, 2008-E83 & 2008-E85 -- 2008 EZ7, 2008 EJ9, 2008 EF9, 2008 ED8, 2008 EB9, P/2008 E2 |
| 458 | Guadarrama Obs. in Spain, 1 in MPEC 2008-E75 -- C/2008 C1 |
| 442 | Gualba Obs. in Spain, 2 in MPEC 2008-E77 -- 46P, 29P |
| 379 | Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2008-E77 -- 17P |
| D88 | Hiratsuka Obs., 5 in MPEC 2008-E77 -- C/2007 W1, C/2007 M2, C/2007 D1, C/2007 B2, 70P |
| B15 | Inastars Obs. in Germany, 1 in MPEC 2008-E78 -- 138175 |
| G92 | Jarnac Obs. in Arizona, 1 in MPEC 2008-E77 -- C/2007 G1 |
| 701 | Junk Bond Obs. in Arizona, 2 in MPECs 2008-E76 & 2008-E77 -- P/2008 E2, C/2008 E1 |
| 246 | KLENOT in the Czech Republic, 5 in MPECs 2008-E78, 2008-E80, 2008-E81, 2008-E83 & 2008-E85 -- 2008 EM7, 2008 EJ9, 2008 EF9, 2008 EE9, 2008 EB9 |
| 415 | Kambah Obs. in the Australian Capital Territory, 7 in MPEC 2008-E77 -- C/2007 Y2, C/2007 W1, C/2007 T1, C/2006 XA1, C/2006 Q1, C/2006 E1, 8P |
| 585 | Kiev Comet Station in the Ukraine, 6 in MPECs 2008-E74, 2008-E75, 2008-E76 & 2008-E77 -- C/2008 E1, C/2008 C1, P/2008 A2, 183P, 50P, 17P |
| 046 | Klet Obs. in the Czech Republic, 6 in MPECs 2008-E77, 2008-E78 & 2008-E83 -- 2008 EF9, 2008 ED8, C/2007 W1, 2007 RX19, 2006 DU62, 124P |
| 704 | LINEAR in New Mexico, 18 in MPECs 2008-E77, 2008-E78, 2008-E83 & 2008-E85 -- 2008 EJ9, 2008 EF9, C/2007 U1, C/2007 S2, C/2007 M2, 2006 DU62, 2005 RD34, 2005 EK70, 96189, 5587, 191P, 183P, 110P, 93P, 79P, 74P, 70P, 50P |
| 699 | LONEOS in Arizona, 3 in MPEC 2008-E77 -- 183P, 180P, 172P |
| J87 | La Canada Obs. in Spain, 1 in MPEC 2008-E82 -- 2008 EM8 |
| J76 | La Murta Obs. in Spain, 10 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2007 W1, C/2007 M2, C/2007 B2, C/2006 W3, C/2006 S5, 93P, 46P, 29P, 17P |
| J38 | La Vara Obs. in Spain, 10 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2007 W1, C/2007 T5, C/2006 W3, C/2006 S5, 110P, 93P, 46P, 29P, 17P |
| 304 | Las Campanas Obs. in Chile, 1 in MPEC 2008-E78 -- 1994 AW1 |
| J59 | Linceo Obs. in Spain, 1 in MPEC 2008-E77 -- C/2006 S5 |
| J55 | Los Altos de Arguineguin Obs. in the Canary Islands, 2 in MPEC 2008-E77 -- C/2006 W3, C/2006 S5 |
| 130 | Lumezzane Obs. in Italy, 2 in MPEC 2008-E77 -- C/2006 W3, 70P |
| J40 | Malaga Obs. in Spain, 6 in MPEC 2008-E77 -- C/2007 B2, 110P, 70P, 65P, 46P, 29P |
| 711 | McDonald Obs. in Texas, 2 in MPECs 2008-E77 & 2008-E80 -- 2008 EB9, P/2008 E2 |
| 118 | Modra Obs. in Slovakia, 7 in MPECs 2008-E74, 2008-E75 & 2008-E77 -- C/2008 C1, P/2008 A2, P/2007 VQ11, C/2007 S2, C/2007 M2, C/2007 D3, P/2007 C2 |
| J46 | Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-E76 -- C/2008 E1 |
| 213 | Montcabre Obs. in Spain, 5 in MPEC 2008-E77 -- C/2007 B2, C/2006 W3, 70P, 29P, 17P |
| 945 | Monte Deva Obs. in Spain, 9 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2007 W1, C/2007 M2, C/2007 B2, C/2006 W3, C/2006 S5, 110P, 70P, 46P |
| 900 | Moriyama Obs. in Japan, 6 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2007 Y1, C/2007 T1, 110P, 29P, 17P |
| 474 | Mt. John Obs. in New Zealand, 3 in MPECs 2008-E81, 2008-E85 & 2008-E86 -- 2008 EM9, 2008 EJ9, 2008 EE9 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 13 in MPECs 2008-E77, 2008-E78, 2008-E79, 2008-E80, 2008-E82, 2008-E83, 2008-E84 & 2008-E85 -- 2008 EM8, 2008 EJ9, 2008 EG9, 2008 EF9, 2008 EB9, 2008 EA9, C/2007 M2, 2004 DG2, 86324, 163902, 172P, 148P, 93P |
| J93 | Mt. Tuffley Obs. in England, 3 in MPECs 2008-E77 & 2008-E78 -- 1036, 124P, 93P |
| A13 | Naef Obs. in Switzerland, 1 in MPEC 2008-E82 -- 2008 EM8 |
| J47 | Nazaret Obs. in Spain, 12 in MPECs 2008-E76 & 2008-E77 -- P/2008 E2, C/2008 E1, C/2007 B2, C/2006 S5, 173P, 70P, 65P, 46P, 29P, 22P, 17P, 7P |
| 423 | North Ryde Obs. in New South Wales, 6 in MPECs 2008-E73 & 2008-E77 -- C/2008 A1, C/2007 Y2, C/2007 Q3, C/2006 Q1, C/2006 K4, 8P |
| 224 | Ottmarsheim Obs. in France, 1 in MPEC 2008-E77 -- 172P |
| B49 | Paus Obs. in Spain, 2 in MPEC 2008-E77 -- 180P, 7P |
| 941 | Pla D'Arguines Obs. in Spain, 1 in MPEC 2008-E82 -- 2008 EM8 |
| D29 | Purple Mtn. Obs. XuYi Station in China, 6 in MPEC 2008-E77 -- C/2007 M2, C/2007 D1, C/2007 B2, 172P, 70P, 22P |
| J42 | Puzol Obs. in Spain, 2 in MPEC 2008-E77 -- 180P, 110P |
| H68 | Red Barn Obs. in Georgia, 1 in MPEC 2008-E83 -- 2008 EF9 |
| A41 | Rezman Obs. in Slovenia, 9 in MPEC 2008-E77 -- C/2007 Y1, C/2007 T5, C/2007 S2, C/2006 S5, P/2005 SB216, 180P, 124P, 65P, 7P |
| 939 | Rodeno Obs. in Spain, 3 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2006 W3, 46P |
| 461 | SZTE Asteroid Program in Hungary, 1 in MPEC 2008-E77 -- C/2002 VQ94 |
| 854 | Sabino Canyon Obs. in Arizona, 5 in MPECs 2008-E77, 2008-E80, 2008-E81, 2008-E85 & 2008-E86 -- 2008 EM9, 2008 EJ9, 2008 EE9, 2008 EB9, P/2008 E2 |
| 204 | Schiaparelli Obs. in Italy, 14 in MPEC 2008-E77 -- C/2007 U1, C/2007 T5, C/2007 S2, P/2007 C2, C/2006 W3, C/2006 S5, C/2005 E2, 192P, 173P, 166P, 148P, 79P, 74P, 65P |
| E12 | Siding Spring Survey (SSS) in New South Wales, 3 in MPECs 2008-E78, 2008-E81 & 2008-E86 -- 2008 EP6, 2008 EM9, 2008 EE9 |
| 071 | Smolyan Obs. in Bulgaria, 10 in MPEC 2008-E77 -- C/2007 G1, C/2007 B2, C/2006 W3, C/2005 L3, 173P, 124P, 74P, 65P, 29P, 17P |
| 691 | Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2008-E78 & 2008-E80 -- 2008 EB9, 9400, 5836, 5646 |
| 291 | Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2008-E78, 2008-E79, 2008-E80, 2008-E84 & 2008-E85 -- 2008 EX5, 2008 ER7, 2008 EO7, 2008 EN6, 2008 EM7, 2008 EJ9, 2008 EG9, 2008 EB9, 2008 EA9, 2008 DA4 |
| A97 | Stammersdorf Obs. in Austria, 5 in MPECs 2008-E75, 2008-E77 & 2008-E78 -- 2008 ED8, C/2008 C1, 46P, 29P, 17P |
| B30 | Szamotuly-Galowo Obs. in Poland, 13 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2007 W1, C/2006 W3, C/2006 S5, C/2005 L3, 180P, 173P, 93P, 65P, 50P, 46P, 17P, 7P |
| B18 | Terskol Obs. in Russia, 1 in MPEC 2008-E78 -- 153591 |
| G69 | Thousand Oaks Obs. in southern California, 1 in MPEC 2008-E78 -- 2002 TD66 |
| J35 | Tucci Obs. in Spain, 2 in MPEC 2008-E77 -- 110P, 46P |
| J30 | Ventilla Obs., 1 in MPEC 2008-E77 -- 46P |
| B42 | Vitebsk Obs. in Belarus, 8 in MPEC 2008-E77 -- P/2008 E2, C/2007 W1, C/2007 B2, C/2006 S5, 70P, 65P, 22P, 7P |
| C42 | Xingming Obs. in China, 2 in MPEC 2008-E77 -- C/2007 W1, 46P |
| 367 | Yatsuka Obs., 4 in MPECs 2008-E75 & 2008-E77 -- C/2008 C1, C/2006 W3, 93P, 46P |
Impact Risk Monitoring on 10 March '08
| 0000NNN000 Object | Risk Monitor | When Noted UTC | 0000T0000 Year Range | VI # | 000NN00 Prob Cum | T0000 PS Cum | T0000 PS Max | T S | Notes for Today's Latest Risk Assessments |
| 2008 EA9 | JPL Sentry | 1708 | 2076-2096 | 3 | 2.4e-07 | -8.37 | -8.53 | 0 | JPL: "Analysis based on 21 observations spanning 4.0014 days (2008-Mar-06.40551 to 2008-Mar-10.40687)." Diameter approximately 0.010 km. from mean, weighted H=27.7. |
| 2008 ED8 | JPL Sentry | 1557 | R E M O V E D | JPL: Risk listing removed at 1138 UTC. | |||||
| 2008 ER7 | NEODyS | 1709 | 2014-2090 | 136 | 3.55e-06 | -2.96 | -3.48 | 0 | NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/09.339." |
| JPL Sentry | 1557 | 2014-2107 | 477 | 2.0e-05 | -2.41 | -2.84 | 0 | JPL: "Analysis based on 21 observations spanning 3.0025 days (2008-Mar-06.33608 to 2008-Mar-09.33853)." Diameter approximately 0.291 km. from mean, weighted H=20.3. | |
| 2008 EO7 | NEODyS | 1557 | R E M O V E D | ||||||
| 2008 EM7 | JPL Sentry | 1557 | 2014-2102 | 37 | 2.4e-06 | -3.59 | -4.25 | 0 | JPL: "Analysis based on 37 observations spanning 3.6640 days (2008-Mar-06.25767 to 2008-Mar-09.92166)." Diameter approximately 0.190 km. from mean, weighted H=21.3. |
| NEODyS | 1557 | 2014-2089 | 26 | 2.45e-06 | -3.59 | -4.13 | 0 | NEODyS: "Based on 38 optical observations (of which 1 are rejected as outliers) from 2008/03/06.258 to 2008/03/09.922." | |
| 2008 EN6 | JPL Sentry | 1557 | R E M O V E D | JPL: Risk listing removed at 1128 UTC. | |||||
| 2008 EX5 | JPL Sentry | 1557 | 2049-2101 | 111 | 3.2e-05 | -4.11 | -5.06 | 0 | JPL: "Analysis based on 31 observations spanning 4.9303 days (2008-Mar-04.39523 to 2008-Mar-09.3255)." Diameter approximately 0.061 km. from mean, weighted H=23.7. |
| NEODyS | 1557 | 2044-2090 | 147 | 2.44e-05 | -4.19 | -5.05 | 0 | NEODyS: "Based on 32 optical observations (of which 1 are rejected as outliers) from 2008/03/04.396 to 2008/03/09.326." | |
| 2008 DA4 | JPL Sentry | 1557 | 2100 | 1 | 3.0e-07 | -6.31 | -6.31 | 0 | JPL: "Analysis based on 58 observations spanning 10.998 days (2008-Feb-27.28072 to 2008-Mar-09.27856)." Diameter approximately 0.055 km. from mean, weighted H=24.0. |
Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale
An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.
Chronology on 10 March '08
Times are UTC for when items were noted or added by The Tracking News.
| 2058 | Grabbed MPEC 2008-E85 - 2008 EJ9 - see above Grabbed MPEC 2008-E86 - 2008 EM9 - see above |
| 2033 | Grabbed MPEC 2008-E83 - 2008 EF9 - see above Grabbed MPEC 2008-E84 - 2008 EG9 - see above |
| 1957 | Grabbed MPEC 2008-E82 - 2008 EM8 - see above |
| 1859 | Grabbed MPEC 2008-E81 - 2008 EE9 - see above |
| 1801 | Grabbed MPEC 2008-E80 - 2008 EB9 - see above |
| 1709 | Noted that NEODyS has updated its 2008 ER7 risk assessment - see above |
| 1708 | Noted that JPL Sentry has posted 2008 EA9 as an impact risk - see above |
| 1557 | Noted that JPL Sentry has updated its 2008 DA4 risk assessment - see above Noted that JPL Sentry has removed 2008 ED8 as an impact risk - see above Noted that JPL Sentry has updated its 2008 EM7 risk assessment - see above Noted that NEODyS has updated its 2008 EM7 risk assessment - see above Noted that JPL Sentry has removed 2008 EN6 as an impact risk - see above Noted that NEODyS has removed 2008 EO7 as an impact risk - see above Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above Noted that JPL Sentry has updated its 2008 EX5 risk assessment - see above Noted that NEODyS has updated its 2008 EX5 risk assessment - see above Grabbed MPEC 2008-E78 - Daily Orbit Update - see above |
| 1556 | Grabbed MPEC 2008-E79 - 2008 EA9 - see above |
| 0501 | Grabbed MPEC 2008-E77 - Observations of Comets - see above |
| 0330 | Grabbed MPEC 2008-E73 - Comet C/2008 A1 (McNaught) - see above Grabbed MPEC 2008-E74 - Comet P/2008 A2 (LINEAR) - see above Grabbed MPEC 2008-E75 - Comet C/2008 C1 (Chen-Gao) - see above Grabbed MPEC 2008-E76 - Comet C/2008 E1 (Catalina) - see above |