The European Space Agency yesterday previewed the coming July 10th Rosetta flyby of Main Belt asteroid 21 Lutetia, which the mission studied distantly in January 2007. This object's properties are poorly understood but it is considerably larger than Main Belter 2867 Steins, flown past in September 2008. These two Rosetta OSIRIS shots of Steins are similar enough to "free view" (defocus your eyes and let the two fuse into a third) in 3D. ©Copyright 2008 ESA.
Contents on 16 June '10
- IAU Minor Planet Center
- NEOCP Activity -- seven listings: 2 new, 5 updated
- New MPECs -- ten MPECs
- Observers -- 23 observing facilities
- Impact Risk Monitoring -- two objects
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
Of 326 risk-listed objects, 29 have had news in the last month. Updated at 1551 UTC. - Earth's Busy Neighborhood Traffic Report
One object is known to be within ten LD of Earth today. Updated at 2314 UTC. - Ephemerides for risk-rated and nearby objects
- News image catalog
- 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 16 June '10
The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and five updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of fourteen listings on the NEOCP at some point today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.
New MPECs on 16 June '10
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been ten MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2010-M01 time-stamped "00:31 UT" - 2010 LE68 - see below
- MPEC 2010-M02 time-stamped "03:12 UT" - 2007 OG3 = 1975 UW - see below
- MPEC 2010-M03 time-stamped "06:10 UT" - Daily Orbit Update - see below
- MPEC 2010-M04 time-stamped "13:02 UT" - 2010 LJ68 - see below
- MPEC 2010-M05 time-stamped "13:06 UT" - 2010 LK68 - see below
- MPEC 2010-M06 time-stamped "13:17 UT" - 2010 LL68 - see below
- MPEC 2010-M07 time-stamped "13:23 UT" - 2010 LM68 - see below
- MPEC 2010-M08 time-stamped "14:47 UT" - 2010 LO33 - see below
- MPEC 2010-M09 time-stamped "16:26 UT" - Comet C/2010 L3 (Catalina) - see below
- MPEC 2010-M10 time-stamped "22:55 UT" - 2010 MA
MPEC 2010-M10 - "22:55 UT" - 2010 MA
- K10M00A 2010 MA (small asteroid, Earth MOID=9.2 LD, H=25.5 ~27m) was discovered at 0826 UT on 16 June by the Mt. Lemmon Survey (MLS), which observed it at June 16.35-39p7. The discovery was confirmed by the Catalina Sky Survey (CSS) (June 16.29-30p4), Magdalena Ridge Obs. (MRO) (June 16.38-40p4), and Great Shefford Obs. (June 16.92-93p4). This object is now within ten lunar distances (LD) of Earth, reaching 9.3 LD on 15 June.
MPEC 2010-M09 - "16:26 UT" - Comet C/2010 L3 (Catalina)
- CK10L030 C/2010 L3 (Catalina) (i=57.4°, q=2.336 AU, TP=2011 July 10.279 TT) from CSS (June 15.30-33p4), MRO (June 15.36-38p4 & 16.26-28p4), ISON-NM Obs. (June 15.37-38p3), Inastars Obs. (June 15.92-93p6), Great Shefford Obs. (June 15.96p1 & 16.02p1), Sandlot Obs. (June 16.22-23p2), Tzec Maun Obs. Mayhill (June 16.23-24p3), Tenagra II Obs. (June 16.24-26p3), Desert Moon Obs. (June 16.24-27p3), Astronomical Research Obs. Westfield (June 16.25-27p2), RAS Obs. Mayhill (June 16.31-38p5), and Plaskett 1.8m Telescope (June 16.34-35p3)
MPEC 2010-M08 - "14:47 UT" - 2010 LO33
- K10L33O 2010 LO33 (Centaur, q=13.255 AU, Q=35.759 AU, H=7.8 ~93.3 km) from MLS (May 20.31-33p4) and Cerro Tololo Inter-American Obs. (CTIO) (June 12.22p1 & 12.27p1)
MPEC 2010-M07 - "13:23 UT" - 2010 LM68
- K10L68M 2010 LM68 (H=20.8 ~234m) was discovered at 0710 UT on 15 June by CSS, which observed it at June 15.30-32p4. The discovery was confirmed by MRO (June 15.35-37p4 & 16.26-28p4), H. Sato via RAS Obs. Mayhill (June 15.35-36p3), ISON-NM Obs. (June 15.38p3), Tzec Maun Obs. Mayhill (June 15.39-42p2 & 16.30-31p2), Grasslands Obs. (June 15.41-42p3), Guidestar Obs. (June 15.88-90p3), Great Shefford Obs. (June 15.93-94p3), Inastars Obs. (June 15.97p6), Sandlot Obs. (June 16.21p4), Desert Moon Obs. (June 16.21-22p4), Doc Greiner Research Obs. (DGRO) (June 16.22p4), Tenagra II Obs. (June 16.24-27p3), ARO Westfield (June 16.28-30p3), and Dave Balam via Plaskett 1.8m Telescope (June 16.33p3).
MPEC 2010-M06 - "13:17 UT" - 2010 LL68
- K10L68L 2010 LL68 (small asteroid, H=23.0 ~85m) was discovered at 1729 UT on 12 June by WISE, which observed it at June 12.73p1, 12.99p1, 13.06p1, 13.13p1, 13.19p1, 13.26p2, 13.32p1, 13.39p1, 13.46p1, 13.59p1, and 13.72p1. The discovery was confirmed by MRO (June 16.16-19p4 at R=22.0-22.8).
MPEC 2010-M05 - "13:06 UT" - 2010 LK68
- K10L68K 2010 LK68 (small asteroid, Earth MOID=9.9 LD, H=22.5 ~107m) was discovered at 0656 UT on 12 June by WISE, which observed it at June 12.29p1, 12.49p1, 12.55p1, 12.62p1, 12.75p1, and 12.88p2. The discovery was confirmed by MRO (June 16.35-36p2 at R=22.1-3 & 16.41-43p3 at R=21.9-22.2).
MPEC 2010-M04 - "13:02 UT" - 2010 LJ68
- K10L68J 2010 LJ68 (risk-listed, H=22.5 ~107m) was discovered at 1746 UT on 11 June by WISE, which observed it at June 11.74p1, 11.87p1, 12.00p1, 12.07p1, 12.14p1, 12.20p1, 12.27p1, 12.34p1, 12.40p1, 12.47p1, 12.53p1, 12.67p1, 12.73p1, 12.86-87p2, and 12.00p1. The discovery was confirmed by MRO (June 16.20-22p4 at R=22.3-8).
<< DOU on 16 June '10 >> MPEC 2010-M03 - "06:10 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K10L64D 2010 LD64 (small asteroid, arc=1 day, H=25.5 ~27m) from MRO (June 15.32-35p4)
- K10L34L 2010 LL34 (arc=6 days, H=19.4 ~446m) from CSS (June 15.38-41p3) and MRO (June 15.38-41p4)
- K10JB0H 2010 JH110 (small asteroid, arc=31 days, H=26.3 ~19m) from MRO (June 15.42-44p3 at R=23.5-8)
- Observations of recently (no longer) risk-listed objects
- K10L64C 2010 LC64 (small asteroid, arc=1 day, H=24.6 ~41m) from Tenagra II Obs. (June 15.21p3) and MRO (June 15.31-33p4)
- K10L61J 2010 LJ61 (arc=7 days, H=20.8 ~234m) from the Spacewatch 1.8m telescope (June 15.19p3)
- K10L34M 2010 LM34 (small asteroid, Q=4.379 AU, arc=5 days, H=23.3 ~74m) from Tenagra II Obs. (June 15.42-43p3)
- Observations of small asteroids (H>22.0)
- K10L64A 2010 LA64 (arc=2 days, H=23.2 ~78m) from Tenagra II Obs. (June 15.17-20p2) and MLS (June 15.31-33p4)
- K10K10P 2010 KP10 (arc=26 days, H=23.4 ~71m) from Spacewatch 1.8m (June 15.34-37p3)
- K10HA7X 2010 HX107 (arc=26 days, H=23.4 ~71m) from David Tholen's team on Mauna Kea (May 16.30-31p3 at R=21.9-22.3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K10L34K 2010 LK34 (q=0.355 AU, arc=6 days, H=21.9 ~141m) from Tenagra II Obs. (June 15.20-21p2)
- K10K00D 2010 KD (arc=30 days, H=21.9 ~141m) from MLS (June 15.26-28p4)
- K04K17H 2004 KH17 (q=0.357 AU, arc=3 opp, H=22.0 ~135m) from Schiaparelli Obs. (May 31.88-90p5)
- Observations of other objects
- K10L64B 2010 LB64 (i=51.7°, arc=2 days, H=21.7 ~155m) from Tenagra II Obs. (June 15.41-42p3)
- K10L15E 2010 LE15 (arc=9 days, H=18.9 ~562m) from WISE (June 10.44p1, 10.50p1, 10.57p1, 10.63p1, 10.70p1, 10.77p2, 10.90p2, 11.03p2, 11.16p1, 11.30p1, 11.43p1, 11.56p1, 11.69p1 & 11.82p1)
- K10L14J 2010 LJ14 (arc=10 days, H=17.8 ~933m) from Desert Moon Obs. (June 15.23-27p3) and Spacewatch 1.8m (June 15.29p3)
- K10L14G 2010 LG14 (q=0.269 AU, arc=11 days, H=18.2 ~776m) from Tenagra II Obs. (June 15.45p3)
- K10L00F 2010 LF from Schiaparelli Obs. (June 4.91-93p3)
- K10J88F 2010 JF88 (arc=27 days, H=18.5 ~676m) from Schiaparelli Obs. (June 4.99-01p3)
- K10J87G 2010 JG87 (q=0.146 AU, Q=5.380 AU, arc=34 days, H=19.3 ~467m) from Spacewatch 1.8m (June 15.25-28p5)
- K10J00G 2010 JG (arc=38 days, H=20.9 ~224m) from WISE (June 11.26p1, 11.39p1, 11.59p1, 11.65p1 & 11.72p1)
- K10G75R 2010 GR75 (arc=63 days, H=19.6 ~407m) from Spacewatch 1.8m (June 15.30-31p3)
- K10G62X 2010 GX62 (Q=5.034 AU, arc=66 days, H=20.1 ~323m) from Spacewatch 1.8m (June 15.24-25p3)
- K10G62W 2010 GW62 (arc=66 days, H=19.4 ~446m) from Spacewatch 1.8m (June 15.31-32p3)
- K10F92O 2010 FO92 (arc=87 days, H=19.9 ~355m) from Desert Moon Obs. (June 15.15-19p3)
- K10C18L 2010 CL18 (Q=4.186 AU, arc=122 days, H=18.3 ~741m) from the Spacewatch 0.9m telescope (June 15.29-33p3)
- K10A00E 2010 AE (arc=161 days, H=19.5 ~426m) from Desert Moon Obs. (June 15.40-45p3)
- K09K05D 2009 KD5 (arc=3 opp, H=18.4 ~708m) from Wishing Star Obs. (June 16.05-06p3)
- K08E09B 2008 EB9 (arc=2 opp, H=20.4 ~282m) from WISE (June 10.07p1, 10.60p1, 10.73p1, 10.99p1, 11.26p1, 11.39p1, 11.59p1, 11.65p1, 11.72p1, 12.05p2, 12.32p1, 12.38p1, 12.58p1, 12.65p1, 12.98p1, 13.04p1, 13.18p1, 13.24p1, 13.31p2, 13.37p1, 13.57p1, 13.64p1, 13.71p1, 14.23p1 & 14.37p1)
- K04L00G 2004 LG (i=70.9°, q=0.212 AU, arc=3 opp, H=18.0 ~851m) from WISE (June 11.95p1, 12.01p1, 12.08p2, 12.14p1, 12.21p1 & 12.28p1)
- K03R10N 2003 RN10 (i=39.6°, arc=6 opp, H=15.8 ~2.34 km, q=1.024 AU) from Schiaparelli Obs. (June 5.02p2)
- K03H00B 2003 HB (arc=3 opp, H=19.7 ~389m) from Spacewatch 1.8m (June 16.19p3 at V=21.4-22.1)
- O1370 241370 2008 LW8 from Wishing Star Obs. (June 16.09-10p3)
- F9609 159609 2002 AQ3 from Desert Moon Obs. (June 15.30-32p4)
- F2889 152889 2000 CF59 from CSS (June 15.22-24p4)
- E0158 140158 2001 SX169 from CSS (June 15.18-19p3)
- D7170 137170 1999 HF1 from CSS (June 15.18-20p4)
- 85818 85818 1998 XM4 from CSS (June 15.23-25p4)
- 68348 68348 2001 LO7 from MLS (June 15.26-28p4)
MPEC 2010-M02 - "03:12 UT" - 2007 OG3 = 1975 UW
- K07O03G 2007 OG3 (H=18.3 ~741m) from Great Shefford Obs. (June 15.02-03p3 & 15.00p3)
MPEC 2010-M01 - "00:31 UT" - 2010 LE68
- K10L68E 2010 LE68 (small asteroid, H=25.6 ~26m) was discovered at 0844 UT on 15 June by MLS, which observed it at June 15.32-40p12. The discovery was confirmed by MRO (June 15.38-40p4), Grasslands Obs. (June 15.42-43p2), and Great Shefford Obs. (June 15.96p3).
Observers on 16 June '10
A total of 23 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H21 | Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2010-M07 & 2010-M09 -- 2010 LM68, C/2010 L3 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2010-M03, 2010-M07, 2010-M09 & 2010-M10 -- 2010 MA, 2010 LM68, 2010 LL34, C/2010 L3, 85818, 152889, 140158, 137170 |
| 807 | Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2010-M08 -- 2010 LO33 |
| 448 | Desert Moon Obs. in New Mexico, 6 in MPECs 2010-M03, 2010-M07 & 2010-M09 -- 2010 LM68, 2010 LJ14, C/2010 L3, 2010 FO92, 2010 AE, 159609 |
| H26 | Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2010-M07 -- 2010 LM68 |
| 651 | Grasslands Obs. in Arizona, 2 in MPECs 2010-M01 & 2010-M07 -- 2010 LM68, 2010 LE68 |
| J95 | Great Shefford Obs. in England, 5 in MPECs 2010-M01, 2010-M02, 2010-M07, 2010-M09 & 2010-M10 -- 2010 MA, 2010 LM68, 2010 LE68, C/2010 L3, 2007 OG3 |
| A17 | Guidestar Obs. in Germany, 1 in MPEC 2010-M07 -- 2010 LM68 |
| H15 | ISON-NM Obs. in New Mexico, 2 in MPECs 2010-M07 & 2010-M09 -- 2010 LM68, C/2010 L3 |
| B15 | Inastars Obs. in Germany, 2 in MPECs 2010-M07 & 2010-M09 -- 2010 LM68, C/2010 L3 |
| H01 | Magdalena Ridge Obs. (MRO) in New Mexico, 11 in MPECs 2010-M01, 2010-M03, 2010-M04, 2010-M05, 2010-M06, 2010-M07, 2010-M09 & 2010-M10 -- 2010 MA, 2010 LM68, 2010 LL68, 2010 LL34, 2010 LK68, 2010 LJ68, 2010 LE68, 2010 LD64, 2010 LC64, C/2010 L3, 2010 JH110 |
| 5682 | David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2010-M03 -- 2010 HX107 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-M01, 2010-M03, 2010-M08 & 2010-M10 -- 2010 MA, 2010 LO33, 2010 LE68, 2010 LA64, 2010 KD, 68348 |
| 658 | Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2010-M09 -- C/2010 L3 |
| 6581 | Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2010-M07 -- 2010 LM68 |
| H06 | RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-M09 -- C/2010 L3 |
| H06| | H. Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-M07 -- 2010 LM68 |
| H36 | Sandlot Obs. in Kansas, 2 in MPECs 2010-M07 & 2010-M09 -- 2010 LM68, C/2010 L3 |
| 204 | Schiaparelli Obs. in Italy, 4 in MPEC 2010-M03 -- 2010 LF, 2010 JF88, 2004 KH17, 2003 RN10 |
| 691 | Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2010-M03 -- 2010 CL18 |
| 291 | Spacewatch 1.8m telescope in Arizona, 8 in MPEC 2010-M03 -- 2010 LJ61, 2010 LJ14, 2010 KP10, 2010 JG87, 2010 GX62, 2010 GW62, 2010 GR75, 2003 HB |
| 926 | Tenagra II Obs. in Arizona, 8 in MPECs 2010-M03, 2010-M07 & 2010-M09 -- 2010 LM68, 2010 LM34, 2010 LK34, 2010 LG14, 2010 LC64, 2010 LB64, 2010 LA64, C/2010 L3 |
| H10 | Tzec Maun Obs. Mayhill in New Mexico, 2 in MPECs 2010-M07 & 2010-M09 -- 2010 LM68, C/2010 L3 |
| C51 | WISE in Earth polar orbit, 7 in MPECs 2010-M03, 2010-M04, 2010-M05 & 2010-M06 -- 2010 LL68, 2010 LK68, 2010 LJ68, 2010 LE15, 2010 JG, 2008 EB9, 2004 LG |
| I15 | Wishing Star Obs. in Rhode Island, 2 in MPEC 2010-M03 -- 2009 KD5, 241370 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 16 June '10
| 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 |
| 2010 LJ68 | JPL Sentry | 1550 | 2015-2092 | 38 | 7.4e-08 | -5.82 | -6.52 | 0 | JPL: "Analysis based on 20 observations spanning 4.4811 days (2010-Jun-11.74037 to 2010-Jun-16.22142)." Diameter approximately 0.090 km. from mean, weighted H=22.9. |
| 2010 LD64 | NEODyS | 1550 | 2057-2065 | 3 | 1.72e-08 | -8.18 | -8.20 | 0 | NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2010/06/14.288 to 2010/06/15.347." |
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 16 June '10
Times are UTC for when items were noted or added by The Tracking News.
| 2309 | Grabbed MPEC 2010-M10 - 2010 MA - see above |
| 1710 | Grabbed MPEC 2010-M09 - Comet C/2010 L3 (Catalina) - see above |
| 1550 | Noted that NEODyS has updated its 2010 LD64 risk assessment - see above Noted that JPL Sentry has posted 2010 LJ68 as an impact risk - see above Grabbed MPEC 2010-M03 - Daily Orbit Update - see above Grabbed MPEC 2010-M04 - 2010 LJ68 - see above Grabbed MPEC 2010-M05 - 2010 LK68 - see above Grabbed MPEC 2010-M06 - 2010 LL68 - see above Grabbed MPEC 2010-M07 - 2010 LM68 - see above Grabbed MPEC 2010-M08 - 2010 LO33 - see above |
| 0348 | Grabbed MPEC 2010-M02 - 2007 OG3 = 1975 UW - see above |
| 0113 | Grabbed MPEC 2010-M01 - 2010 LE68 - see above |
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