2008-03-31 Tracking News

Contents on 31 March '08

IAU Minor Planet Center
- NEOCP Activity -- seven listings: 1 new, 6 updated
- New MPECs -- nine MPECs
Observers -- 67 observing facilities
Impact Risk Monitoring -- six 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 31 March '08

The MPC's NEO Confirmation Page has 7 listings: 1 new, 6 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and six updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of sixteen 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 31 March '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been nine MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2008-F58 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2008-F59 time-stamped "17:07 UT" - 2008 FS6 - see below
MPEC 2008-F60 time-stamped "17:09 UT" - 2008 FT6 - see below
MPEC 2008-F61 time-stamped "17:14 UT" - 2008 FU6 - see below
MPEC 2008-F62 time-stamped "20:02 UT" - Comet C/2008 C1 (Chen-Gao) - see below
MPEC 2008-F63 time-stamped "20:46 UT" - Observations of Comets - see below
MPEC 2008-F64 time-stamped "20:57 UT" - 2008 FW6 - see below
MPEC 2008-F65 time-stamped "21:01 UT" - 2008 FX6 - see below
MPEC 2008-F66 time-stamped "21:06 UT" - 2008 FY6

MPEC 2008-F66 - "21:06 UT" - 2008 FY6

K08F06Y 2008 FY6 (H=20.4 ~282m) was discovered at 0712 UT on 30 March by LINEAR, which observed it at March 30.30-34p4. The discovery was confirmed by Remanzacco Obs. (March 30.86-89p3), Great Shefford Obs. (March 30.91-92p3), Sabino Canyon Obs. (March 31.23-25p3), and KLENOT (March 31.83p7).

MPEC 2008-F65 - "21:01 UT" - 2008 FX6

K08F06X 2008 FX6 (small asteroid, Earth MOID=5.0 LD, H=25.0 ~34m) was discovered at 0554 UT on 30 March by LINEAR, which observed it at March 30.25-28p4. The discovery was confirmed by Remanzacco Obs. (March 30.82-83p5), Farra d'Isonzo Obs. (March 30.84p3), Great Shefford Obs. (March 30.84p3), Jim Young via Table Mtn. Obs. (March 31.16-21p4), Dave Balam via Plaskett 1.8m Telescope (March 31.17-18p3), Sabino Canyon Obs. (March 31.21p3), Alter Satzberg Obs. (March 31.77-79p6), KLENOT (March 31.78p5), and Vallemare di Borbona Obs. (March 31.80-81p4). This object is now within ten lunar distances (LD) of Earth, reaching 6.7 LD on 31 March.

MPEC 2008-F64 - "20:57 UT" - 2008 FW6

K08F06W 2008 FW6 (risk-listed, H=20.9 ~224m) was discovered at 0427 UT on 30 March by LINEAR, which observed it at March 30.19-22p4. The discovery was confirmed by Remanzacco Obs. (March 30.84-85p2), Great Shefford Obs. (March 30.85p3), Farra d'Isonzo Obs. (March 30.87-88p2), Modra Obs. (March 31.09p3), Balam/Plaskett (March 31.20-21p3), Sabino Canyon Obs. (March 31.22p3), the Mt. Lemmon Survey (MLS) (March 31.23-25p4), Young/Table Mtn. (March 31.25-26p4), and Alter Satzberg Obs. (March 31.83-85p3).

MPEC 2008-F63 - "20:46 UT" - Observations of Comets

CK08A010 C/2008 A1 (McNaught) from Auckland Obs. (March 27.40p3) and North Ryde Obs. (March 30.49-51p2)
CK07Y020 C/2007 Y2 (McNaught) from North Ryde Obs. (March 27.42-45p2 & 30.42-45p2)
CK07Y010 C/2007 Y1 (LINEAR) from LINEAR (March 10.22-26p5 & 28.19-22p4), Schiaparelli Obs. (March 23.99-03p2), and Moriyama Obs. (March 24.55p2)
CK07W010 C/2007 W1 (Boattini) from El Leoncito Obs. (Feb. 15.28-30p3 & March 19.18-21p4), Vega del Thader Obs. (March 25.04p3), San Marcello Pistoiese Obs. (March 25.85-86p3), CAST Obs. (March 25.88p1), Carmelita Obs. (March 25.89-90p3), Remanzacco Obs. (March 25.91p2), Chante-Perdrix Obs. (March 25.91-93p3), Auckland Obs. (March 27.46p3), Verona Obs. (March 28.94-95p3), La Vara Obs. (March 29.03-04p3 & 30.01p2), Stammersdorf Obs. (March 29.92-95p5), Rodeno Obs. (March 29.95-96p3), Mataro Obs. (March 30.05p3), Kambah Obs. (March 30.58p2), Xingming Obs. (March 30.69p1 & 30.73-75p2), and Atlante Obs. (March 31.07-08p3)
CK07U010 C/2007 U1 (LINEAR) from Smolyan Obs. (March 8.77-79p4), LINEAR (March 9.11-15p5), and Ageo Obs. (March 9.47p2)
CK07T050 C/2007 T5 (Gibbs) from Vicksburg Obs. (March 23.07-10p2), Borken Obs. (March 24.85p1), and Schiaparelli Obs. (March 29.87p1 & 29.93p1)
CK07T010 C/2007 T1 (McNaught) from Ageo Obs. (March 22.43p2), Schiaparelli Obs. (March 23.85-86p2), Vega del Thader Obs. (March 24.85-88p9), and Auckland Obs. (March 27.39p3)
CK07Q030 C/2007 Q3 (Siding Spring) from Auckland Obs. (March 27.36p3) and North Ryde Obs. (March 27.38-39p2 & 30.38-39p2)
CK07M020 C/2007 M2 (Catalina) from La Murta Obs. (March 25.04-05p3), San Marcello Pistoiese Obs. (March 25.78-80p4), Auckland Obs. (March 27.45p3), Balzaretto Obs. (March 28.86-89p3), the Catalina Sky Survey (CSS) (March 29.23-25p4), and LINEAR (March 30.30-35p5)
CK07G010 C/2007 G1 (LINEAR) from Vitebsk Obs. (March 28.08-09p2) and Ageo Obs. (March 28.72p2)
CK07D010 C/2007 D1 (LINEAR) from Moriyama Obs. (March 17.61-62p2) and San Marcello Pistoiese Obs. (March 25.78-82p3)
PK07C020 P/2007 C2 (Catalina) from Schiaparelli Obs. (March 23.94-97p2) and Lumezzane Obs. (March 25.88-89p3)
CK07B020 C/2007 B2 (Skiff) from El Leoncito Obs. (Feb. 15.30-32p3), Smolyan Obs. (March 8.94-96p3 & 10.95-97p5), Vega del Thader Obs. (March 24.99p16), La Murta Obs. (March 25.08p3 & 25.83-84p3), San Marcello Pistoiese Obs. (March 25.87-90p3), CAST Obs. (March 25.87p1), Carmelita Obs. (March 25.90-91p3), Goodricke-Pigott Obs. (March 26.27-30p3, 27.27-30p3, 28.27-28p2, 29.26-28p2 & 30.26-27p2), Auckland Obs. (March 27.45-46p3), Vitebsk Obs. (March 27.94-95p3), Paus Obs. (March 27.95p4), Nazaret Obs. (March 28.02-03p3), Balzaretto Obs. (March 28.91-94p5), La Vara Obs. (March 29.01-02p3), Ageo Obs. (March 29.72-73p3), Mataro Obs. (March 29.99-01p3), Montcabre Obs. (March 29.00p3), Rodeno Obs. (March 30.02-03p3), Los Molinos Obs. (March 30.26-28p4), CSS (March 30.30-32p4), and Atlante Obs. (March 31.11p3)
CK06S050 C/2006 S5 (Hill) from Vega del Thader Obs. (March 18.96-98p6 & 24.94-96p5), Schiaparelli Obs. (March 23.98p1 & 24.04p1), Carmelita Obs. (March 24.80p3 & 25.84-88p3), CAST Obs. (March 25.86p1), Lumezzane Obs. (March 25.90p4), LINEAR (March 27.24-29p5), Nazaret Obs. (March 27.92-95p3), Vicksburg Obs. (March 28.07-08p2), La Vara Obs. (March 28.99-00p3), Rodeno Obs. (March 29.92-93p3), and Atlante Obs. (March 30.92-94p3)
CK06Q010 C/2006 Q1 (McNaught) from El Leoncito Obs. (Feb. 15.17-20p5 & March 19.12-15p5), Kambah Obs. (March 26.53-54p2 & 30.56-57p2), and Atlante Obs. (March 30.95-97p3)
PK06B070 P/2006 B7 from the Spacewatch 0.9m telescope (2006 Jan. 30.45-49p3, 2006 Feb. 7.45-48p3, 2006 Feb. 20.30-33p3, 2006 Feb. 24.24-27p3 & 2006 March 2.20-24p3) and MLS (2006 March 23.28-30p4 & 2006 March 24.24-25p4)
PK05Y020 P/2005 Y2 (McNaught) from Schiaparelli Obs. (March 2.82-85p2 & 23.80-83p2)
CK05L030 C/2005 L3 (McNaught) from Smolyan Obs. (March 10.99-03p10), Mt. Tuffley Obs. (March 27.03p3), Vitebsk Obs. (March 28.03p4), Ageo Obs. (March 28.69-70p2), and the SZTE Asteroid Program (SZTE) (March 31.11-13p4)
CK02V94Q C/2002 VQ94 (LINEAR) from Schiaparelli Obs. (March 14.01p1 & 14.07p1), SZTE (March 31.07-09p4), and Atlante Obs. (March 31.14-18p3)
PJ98X010 P/1998 X1 (ODAS) from LONEOS (1999 Feb. 12.18-23p3)
0197P 197P/LINEAR from Vitebsk Obs. (March 27.00-01p4), Greiner Research Obs. (GRO) (March 28.31-32p9), and Suno Obs. (March 29.05p2)
0183P 183P/Korlevic-Juric from Ageo Obs. (2007 Dec. 31.83p1 & Jan. 1.84p1), Lumezzane Obs. (March 13.97-98p4), Laietania Obs. (March 22.08p1 & 28.03p1), and Madonna di Dossobuono Obs. (March 29.93-94p3)
0180P 180P/NEAT from Vicksburg Obs. (March 28.15-16p2), Madonna di Dossobuono Obs. (March 29.90-91p3), and Rodeno Obs. (March 29.96-98p3)
0179P 179P/Jedicke from LINEAR (Feb. 29.11-15p5), CSS (Feb. 29.12p1), and Schiaparelli Obs. (March 23.82p1)
0158P 158P/Kowal-LINEAR from Nazaret Obs. (March 16.08-10p3, 30.03-05p4 & 30.98-99p3) and Spacewatch 0.9m (March 30.36-39p3)
0124P 124P/Mrkos from Vega del Thader Obs. (March 21.98p3), Schiaparelli Obs. (March 23.00p1 & 24.05p1), Carmelita Obs. (March 24.81-82p3), Borken Obs. (March 24.88p1), Guadarrama Obs. (March 25.85-86p2), Monte Deva Obs. (March 25.96-99p4, 29.96-97p5 & 30.97p3), Nazaret Obs. (March 26.96-97p3 & 29.94-95p3), Mt. Tuffley Obs. (March 27.02p3), Vitebsk Obs. (March 27.89-90p5), Laietania Obs. (March 28.00p1), Vicksburg Obs. (March 28.12p2), La Vara Obs. (March 29.07p3), Madonna di Dossobuono Obs. (March 29.88-89p3), and Rodeno Obs. (March 29.94p3)
0110P 110P/Hartley 3 from Calarreona Obs. (March 24.84p3), Kiev Comet Station (March 24.89-90p3), CAST Obs. (March 25.85p1), Vitebsk Obs. (March 27.83-84p3), and LINEAR (March 28.12-17p5)
0093P 93P/Lovas 1 from Calarreona Obs. (March 24.87p1), La Murta Obs. (March 25.81p3), CAST Obs. (March 25.84p1), LINEAR (March 30.12-17p5), and La Vara Obs. (March 30.92p3)
0079P 79P/du Toit-Hartley from Faulkes Telescope South (Feb. 29.44-45p3), Chante-Perdrix Obs. (March 25.88-89p3), Vitebsk Obs. (March 27.85p1), and LINEAR (March 28.18-22p4)
0074P 74P/Smirnova-Chernykh from Smolyan Obs. (March 10.80-81p4), Calarreona Obs. (March 23.94p3), and MLS (March 29.12-15p4)
0070P 70P/Kojima from La Murta Obs. (March 25.06-07p3), Remanzacco Obs. (March 25.90p1), Vitebsk Obs. (March 27.97-98p3), CSS (March 29.27-29p4), and Atlante Obs. (March 31.08-09p3)
0065P 65P/Gunn from Smolyan Obs. (March 8.89-90p3), Vega del Thader Obs. (March 18.98-99p6), Nazaret Obs. (March 26.94-95p3), Vitebsk Obs. (March 27.88p1), Rodeno Obs. (March 29.90-92p3), and Mataro Obs. (March 29.91-94p3)
0046P 46P/Wirtanen from Kiev Comet Station (March 24.85-88p7), Gualba Obs. (March 25.80p1 & 27.81p1), CAST Obs. (March 25.85p1), Chante-Perdrix Obs. (March 25.86-87p3), Remanzacco Obs. (March 25.89p1), Monte Deva Obs. (March 25.94-96p3, 29.94p3 & 30.94-95p5), Nazaret Obs. (March 26.90p3, 27.90-91p3 & 29.89-90p3), Vitebsk Obs. (March 27.81-82p5), Montana Blanca Obs. (March 27.90-91p3), Laietania Obs. (March 27.98p1), GRO (March 29.13p6), Mataro Obs. (March 29.89-90p3), Rodeno Obs. (March 29.89-90p3), Montcabre Obs. (March 29.90p3), and Xingming Obs. (March 30.58-63p3)
0029P 29P/Schwassmann-Wachmann 1 from Vega del Thader Obs. (March 21.96p6), La Murta Obs. (March 24.81-83p3 & 25.96p2), Guadarrama Obs. (March 24.84p2 & 25.82-83p2), Gualba Obs. (March 25.79p1 & 27.81p2), CAST Obs. (March 25.86p1), Nazaret Obs. (March 26.91-93p3 & 29.91-94p3), La Vara Obs. (March 28.97p1 & 30.94-95p3), Mataro Obs. (March 29.84-86p3), Montana Blanca Obs. (March 29.86-87p3), Rodeno Obs. (March 29.88-89p3), and LINEAR (March 30.12-17p5)
0026P 26P/Grigg-Skjellerup from Ageo Obs. (March 5.79-80p2 & 22.81p3)
0022P 22P/Kopff from Schiaparelli Obs. (March 24.02p1 & 24.07p1), Vitebsk Obs. (March 27.92p1), LINEAR (March 29.24-29p5), and Nazaret Obs. (March 29.98-01p3)
0017P 17P/Holmes from Smolyan Obs. (March 8.81-85p4), Ageo Obs. (March 22.49p2), Guadarrama Obs. (March 24.82-83p2), Nazaret Obs. (March 24.85-87p3, 25.88-90p3, 26.84-89p3, 27.85-87p3, 29.85-87p3 & 30.85-87p3), Calarreona Obs. (March 24.91-92p3), Chante-Perdrix Obs. (March 25.83-84p3), CAST Obs. (March 25.83p1), Montana Blanca Obs. (March 26.87-89p3 & 29.87-88p3), Laietania Obs. (March 27.96p1), Stammersdorf Obs. (March 29.83-84p3), Schiaparelli Obs. (March 29.86p1 & 29.91p1), Los Altos de Arguineguin Obs. (March 29.86-87p3), and La Vara Obs. (March 30.89-90p3)
0008P 8P/Tuttle from Los Molinos Obs. (March 25.13-14p4, 27.08-14p5 & 30.06-09p5), Kambah Obs. (March 26.53p2 & 29.39p2), and Auckland Obs. (March 27.40-41p3)
0007P 7P/Pons-Winnecke from Remanzacco Obs. (March 25.85-87p3), Montcabre Obs. (March 29.93-94p3), and Nazaret Obs. (March 30.89-91p3)
0004P 4P/Faye from LINEAR (March 10.33-35p3) and Chante-Perdrix Obs. (March 25.89-90p2)

MPEC 2008-F62 - "20:02 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 Kiev Comet Station (March 24.83-84p7), Calarreona Obs. (March 24.92p3), CAST Obs. (March 25.83p1), Chante-Perdrix Obs. (March 25.85p3), Laietania Obs. (March 25.94p1), Nazaret Obs. (March 26.88-89p3, 27.88-89p3 & 29.89p3), Atlante Obs. (March 27.89-90p3), Xingming Obs. (March 28.67-69p4), Suno Obs. (March 28.92-94p4), Schiaparelli Obs. (March 29.84p1 & 29.89p1), Los Altos de Arguineguin Obs. (March 29.85p3), Stammersdorf Obs. (March 29.86-90p5), Mataro Obs. (March 29.87-88p3), Montcabre Obs. (March 29.89p2), La Vara Obs. (March 30.91p3), and Monte Deva Obs. (March 30.96p1)

MPEC 2008-F61 - "17:14 UT" - 2008 FU6

K08F06U 2008 FU6 (H=17.5 ~1.07 km) was discovered at 1141 UT on 29 March by CSS, which observed it at March 29.49-51p3. The discovery was confirmed by Guidestar Obs. (March 30.02-04p3), SZTE (March 30.13p8), Modra Obs. (March 30.13-14p3), Grasslands Obs. (March 30.29-30p3), E. Guido via RAS Obs. Mayhill (March 30.37-39p2), LINEAR (March 30.42-47p5), and MLS (March 31.47-48p3).

MPEC 2008-F60 - "17:09 UT" - 2008 FT6

K08F06T 2008 FT6 (risk-listed, H=17.1 ~1.29 km) was discovered at 0906 UT on 29 March by Spacewatch 0.9m, which observed it at March 29.38-41p3. The discovery was confirmed by the Spacewatch 1.8m telescope (March 29.45-46p3, 30.32p3 & 31.31-32p3).

MPEC 2008-F59 - "17:07 UT" - 2008 FS6

K08F06S 2008 FS6 (small asteroid, H=22.4 ~112m) was discovered at 0747 UT on 29 March by Spacewatch 0.9m, which observed it at March 29.32-36p3. The discovery was confirmed by Spacewatch 1.8m (March 29.44-45p3, 30.28-29p3 & 31.28-29p3), Gaisberg Obs. (March 30.03-04p3), Modra Obs. (March 30.12p2), and Grasslands Obs. (March 30.28-29p3).

<< DOU on 31 Mar. '08 >> MPEC 2008-F58 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K08F05F 2008 FF5 (small asteroid, q=0.081 AU, Q=4.391 AU, arc=2 days, H=23.0 ~85m) from Spacewatch 1.8m (March 30.19-20p2)
K08F00N 2008 FN (i=50.7°, arc=3 days, H=18.1 ~812m) from Spacewatch 1.8m (March 30.33-34p3)
K08E09A 2008 EA9 (small asteroid, arc=24 days, H=27.7 ~10m) from Spacewatch 1.8m (March 30.21-22p3)
K08E07R 2008 ER7 (arc=25 days, H=20.0 ~339m) from Spacewatch 1.8m (March 31.20p3)
Observations of recently (no longer) risk-listed objects
K08F00K 2008 FK (small asteroid, arc=3 days, H=27.4 ~11m) from Spacewatch 1.8m (March 30.29-30p3 at V=21.9-22.6)
K08E69C 2008 EC69 (Q=4.455 AU, arc=41 days, H=17.0 ~1.35 km) from Spacewatch 1.8m (March 30.39-40p3)
K08D05J 2008 DJ5 (arc=31 days, H=19.9 ~355m) from Desert Moon Obs. (March 30.24-30p3)
Observations of small asteroids (H>22.0)
K08F00O 2008 FO (arc=4 days, H=23.2 ~78m) from San Marcello Pistoiese Obs. (March 29.78p4) and Madonna di Dossobuono Obs. (March 30.86p3)
K08E85E 2008 EE85 (arc=18 days, H=22.7 ~98m) from Madonna di Dossobuono Obs. (March 30.81p3)
K08E68Y 2008 EY68 (q=0.179 AU, arc=20 days, H=22.1 ~129m) from Spacewatch 1.8m (March 31.22-23p3)
K03F06Y 2003 FY6 (q=0.305 AU, arc=2 opp, H=22.4 ~112m) from CSS (March 30.24-33p11), Grasslands Obs. (March 30.32-33p3), and Vallemare di Borbona Obs. (March 30.80-81p5)
Observations of other objects
K08F00G 2008 FG (i=40.1°, arc=4 days, H=19.7 ~389m) from Spacewatch 1.8m (March 31.14-15p3)
K08E32B 2008 EB32 (arc=21 days, H=19.2 ~490m) from Madonna di Dossobuono Obs. (March 30.84-85p3)
K08E32A 2008 EA32 (IEO, Q=0.804 AU, arc=21 days, H=16.3 ~1.86 km) from SZTE (March 30.77p2)
K08E09M 2008 EM9 (q=0.292 AU, arc=20 days, H=17.5 ~1.07 km) from El Leoncito Obs. (March 21.26-27p3)
K08E09B 2008 EB9 (arc=23 days, H=20.4 ~282m) from Spacewatch 1.8m (March 31.12-13p3)
K08E07T 2008 ET7 (arc=25 days, H=21.0 ~214m) from Spacewatch 1.8m (March 31.19p3)
K08E06O 2008 EO6 (arc=25 days, H=19.7 ~389m) from Desert Moon Obs. (March 30.40-43p3)
K08E00J 2008 EJ (i=40.4°, arc=30 days, H=20.0 ~339m) from Spacewatch 1.8m (March 31.17-18p2)
K08D00J 2008 DJ (arc=35 days, H=20.5 ~269m) from Spacewatch 1.8m (March 31.16p3)
K08CB8R 2008 CR118 (arc=2 opp, H=18.7 ~616m) from Desert Moon Obs. (March 30.16-20p3)
K08C22B 2008 CB22 (arc=51 days, H=19.7 ~389m) from Desert Moon Obs. (March 30.34-38p3)
K08B18T 2008 BT18 (arc=59 days, H=18.3 ~741m) from Desert Moon Obs. (March 30.10-12p3)
K08A33N 2008 AN33 (Q=4.353 AU, arc=76 days, H=19.0 ~537m) from Spacewatch 1.8m (March 31.23-24p3)
K07R19X 2007 RX19 (i=40.4°, arc=199 days, H=18.4 ~708m) from Madonna di Dossobuono Obs. (March 30.83p3)
K06F09K 2006 FK9 (arc=2 opp, H=20.9 ~224m) from Schiaparelli Obs. (March 29.94-95p2)
K05R34D 2005 RD34 (arc=2 opp, H=20.2 ~309m) from LINEAR (March 30.24-29p5)
K05G21P 2005 GP21 (arc=2 opp, H=19.9 ~355m) from Spacewatch 1.8m (March 30.19-20p3)
K05G00G 2005 GG (arc=3 opp, H=16.1 ~2.04 km, q=0.694 AU) from GRO (March 29.30p5)
K03L06O 2003 LO6 (Q=4.585 AU, arc=3 opp, H=16.9 ~1.41 km) from Desert Moon Obs. (March 30.46-49p3)
K03G00W 2003 GW (i=49.4°, arc=3 opp, H=16.7 ~1.55 km) from El Leoncito Obs. (March 23.11-13p3), CSS (March 30.24-26p4), and Madonna di Dossobuono Obs. (March 30.87p3)
K02F05W 2002 FW5 (i=46.4°, arc=3 opp, H=19.3 ~467m) from CSS (March 30.39-41p4)
K02AC9J 2002 AJ129 (q=0.117 AU, arc=3 opp, H=18.5 ~676m) from Spacewatch 1.8m (March 30.34-35p3)
J94A01W 1994 AW1 (arc=3 opp, H=17.6 ~1.02 km) from El Leoncito Obs. (Feb. 15.20-22p3 & March 22.00-01p3)
H8871 178871 2001 MA8 from CSS (March 30.23-26p4)
H5921 175921 2000 DM1 from CSS (March 30.16-19p3)
H3689 173689 2001 PK9 from El Leoncito Obs. (Feb. 15.27-28p3)
H0891 170891 2004 TY16 from CSS (March 30.17-18p2)
G2567 162567 2000 RW37 from El Leoncito Obs. (March 21.17-19p3)
F5110 155110 2005 TB from El Leoncito Obs. (March 23.03-04p2)
F3591 153591 2001 SN263 from El Leoncito Obs. (March 21.15-16p3 & 23.14-15p3)
E4922 144922 2005 CK38 from LINEAR (March 30.20-23p4)
E1432 141432 2002 CQ11 from LINEAR (March 30.30-33p4)
D6618 136618 1994 CN2 from Spacewatch 0.9m (March 30.19-23p3)
A2873 102873 1999 WK11 from Spacewatch 0.9m (March 30.35-39p3)
96189 96189 1991 NT3 from El Leoncito Obs. (Feb. 15.15-16p3 & March 23.05-07p3)
89830 89830 2002 CE from LINEAR (March 30.18-22p4)
85236 85236 1993 KH from CSS (March 30.36-38p4)
53789 53789 2000 ED104 from CSS (March 30.30-33p4)
40267 40267 1999 GJ4 from Inastars Obs. (March 30.95p4)
21088 21088 1992 BL2 from El Leoncito Obs. (Feb. 15.24-25p3 & March 23.07-09p3)
05836 5836 1993 MF from El Leoncito Obs. (March 21.22-24p3)
05626 5626 1991 FE from Spacewatch 0.9m (March 30.46-49p3)
05587 5587 1990 SB from CSS (March 30.16-18p4)
04954 4954 Eric (1990 SQ) from CSS (March 30.19-21p4)
03691 3691 Bede (1982 FT) from El Leoncito Obs. (March 21.24-25p3)
03554 3554 Amun (1986 EB) from CSS (March 30.19-22p4)
01866 1866 Sisyphus (1972 XA) from LINEAR (March 30.25-28p4)
01864 1864 Daedalus (1971 FA) from LINEAR (March 30.30-34p5) and Montana Blanca Obs. (March 30.91p3)

Observers on 31 March '08

A total of 67 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 8 in MPEC 2008-F63 -- C/2007 U1, C/2007 T1, C/2007 G1, C/2007 B2, C/2005 L3, 183P, 26P, 17P
`B03`	Alter Satzberg Obs. in Austria, 2 in MPECs 2008-F64 & 2008-F65 -- 2008 FX6, 2008 FW6
`J51`	Atlante Obs. in the Canary Islands, 7 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, C/2007 B2, C/2006 S5, C/2006 Q1, C/2002 VQ94, 70P
`467`	Auckland Obs. in New Zealand, 7 in MPEC 2008-F63 -- C/2008 A1, C/2007 W1, C/2007 T1, C/2007 Q3, C/2007 M2, C/2007 B2, 8P
`A81`	Balzaretto Obs. in Italy, 2 in MPEC 2008-F63 -- C/2007 M2, C/2007 B2
`B59`	Borken Obs. in Germany, 2 in MPEC 2008-F63 -- C/2007 T5, 124P
`235`	CAST Obs. in Italy, 9 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, C/2007 B2, C/2006 S5, 110P, 93P, 46P, 29P, 17P
`J79`	Calarreona Obs. in Spain, 5 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 110P, 93P, 74P, 17P
`B20`	Carmelita Obs. in Spain, 4 in MPEC 2008-F63 -- C/2007 W1, C/2007 B2, C/2006 S5, 124P
`703`	Catalina Sky Survey (CSS) in Arizona, 16 in MPECs 2008-F58, 2008-F61 & 2008-F63 -- 2008 FU6, C/2007 M2, C/2007 B2, 2003 GW, 2003 FY6, 2002 FW5, 85236, 53789, 178871, 175921, 170891, 5587, 4954, 3554, 179P, 70P
`A77`	Chante-Perdrix Obs. in France, 6 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, 79P, 46P, 17P, 4P
`448`	Desert Moon Obs. in New Mexico, 6 in MPEC 2008-F58 -- 2008 EO6, 2008 DJ5, 2008 CR118, 2008 CB22, 2008 BT18, 2003 LO6
`808`	El Leoncito Obs. in Argentina, 14 in MPECs 2008-F58 & 2008-F63 -- 2008 EM9, C/2007 W1, C/2007 B2, C/2006 Q1, 2003 GW, 1994 AW1, 96189, 21088, 173689, 162567, 155110, 153591, 5836, 3691
`595`	Farra d'Isonzo Obs. in Italy, 2 in MPECs 2008-F64 & 2008-F65 -- 2008 FX6, 2008 FW6
`E10`	Faulkes Telescope South in New South Wales, 1 in MPEC 2008-F63 -- 79P
`B21`	Gaisberg Obs. in Austria, 1 in MPEC 2008-F59 -- 2008 FS6
`683`	Goodricke-Pigott Obs. in Arizona, 1 in MPEC 2008-F63 -- C/2007 B2
`651`	Grasslands Obs. in Arizona, 3 in MPECs 2008-F58, 2008-F59 & 2008-F61 -- 2008 FU6, 2008 FS6, 2003 FY6
`J95`	Great Shefford Obs. in England, 3 in MPECs 2008-F64, 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6, 2008 FW6
`H51`	Greiner Research Obs. (GRO) in Wisconsin, 3 in MPECs 2008-F58 & 2008-F63 -- 2005 GG, 197P, 46P
`458`	Guadarrama Obs. in Spain, 3 in MPEC 2008-F63 -- 124P, 29P, 17P
`442`	Gualba Obs. in Spain, 2 in MPEC 2008-F63 -- 46P, 29P
`A17`	Guidestar Obs. in Germany, 1 in MPEC 2008-F61 -- 2008 FU6
`B15`	Inastars Obs. in Germany, 1 in MPEC 2008-F58 -- 40267
`246`	KLENOT in the Czech Republic, 2 in MPECs 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6
`415`	Kambah Obs. in the Australian Capital Territory, 3 in MPEC 2008-F63 -- C/2007 W1, C/2006 Q1, 8P
`585`	Kiev Comet Station in the Ukraine, 3 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 110P, 46P
`704`	LINEAR in New Mexico, 21 in MPECs 2008-F58, 2008-F61, 2008-F63, 2008-F64, 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6, 2008 FW6, 2008 FU6, C/2007 Y1, C/2007 U1, C/2007 M2, C/2006 S5, 2005 RD34, 89830, 144922, 141432, 1866, 1864, 179P, 110P, 93P, 79P, 29P, 22P, 4P
`699`	LONEOS in Arizona, 1 in MPEC 2008-F63 -- P/1998 X1
`J76`	La Murta Obs. in Spain, 5 in MPEC 2008-F63 -- C/2007 M2, C/2007 B2, 93P, 70P, 29P
`J38`	La Vara Obs. in Spain, 8 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, C/2007 B2, C/2006 S5, 124P, 93P, 29P, 17P
`B57`	Laietania Obs. in Spain, 5 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 183P, 124P, 46P, 17P
`J55`	Los Altos de Arguineguin Obs. in the Canary Islands, 2 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 17P
`844`	Los Molinos Obs. in Uruguay, 2 in MPEC 2008-F63 -- C/2007 B2, 8P
`130`	Lumezzane Obs. in Italy, 3 in MPEC 2008-F63 -- P/2007 C2, C/2006 S5, 183P
`560`	Madonna di Dossobuono Obs. in Italy, 8 in MPECs 2008-F58 & 2008-F63 -- 2008 FO, 2008 EE85, 2008 EB32, 2007 RX19, 2003 GW, 183P, 180P, 124P
`A06`	Mataro Obs. in Spain, 6 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, C/2007 B2, 65P, 46P, 29P
`118`	Modra Obs. in Slovakia, 3 in MPECs 2008-F59, 2008-F61 & 2008-F64 -- 2008 FW6, 2008 FU6, 2008 FS6
`J46`	Montana Blanca Obs. in the Canary Islands, 4 in MPECs 2008-F58 & 2008-F63 -- 1864, 46P, 29P, 17P
`213`	Montcabre Obs. in Spain, 4 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 B2, 46P, 7P
`945`	Monte Deva Obs. in Spain, 3 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 124P, 46P
`900`	Moriyama Obs. in Japan, 2 in MPEC 2008-F63 -- C/2007 Y1, C/2007 D1
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2008-F61, 2008-F63 & 2008-F64 -- 2008 FW6, 2008 FU6, P/2006 B7, 74P
`J93`	Mt. Tuffley Obs. in England, 2 in MPEC 2008-F63 -- C/2005 L3, 124P
`J47`	Nazaret Obs. in Spain, 11 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 B2, C/2006 S5, 158P, 124P, 65P, 46P, 29P, 22P, 17P, 7P
`423`	North Ryde Obs. in New South Wales, 3 in MPEC 2008-F63 -- C/2008 A1, C/2007 Y2, C/2007 Q3
`B49`	Paus Obs. in Spain, 1 in MPEC 2008-F63 -- C/2007 B2
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 2 in MPECs 2008-F64 & 2008-F65 -- 2008 FX6, 2008 FW6
`H06%`	E. Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-F61 -- 2008 FU6
`473`	Remanzacco Obs. in Italy, 7 in MPECs 2008-F63, 2008-F64, 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6, 2008 FW6, C/2007 W1, 70P, 46P, 7P
`939`	Rodeno Obs. in Spain, 8 in MPEC 2008-F63 -- C/2007 W1, C/2007 B2, C/2006 S5, 180P, 124P, 65P, 46P, 29P
`461`	SZTE Asteroid Program (SZTE) in Hungary, 4 in MPECs 2008-F58, 2008-F61 & 2008-F63 -- 2008 FU6, 2008 EA32, C/2005 L3, C/2002 VQ94
`854`	Sabino Canyon Obs. in Arizona, 3 in MPECs 2008-F64, 2008-F65 & 2008-F66 -- 2008 FY6, 2008 FX6, 2008 FW6
`104`	San Marcello Pistoiese Obs. in Italy, 5 in MPECs 2008-F58 & 2008-F63 -- 2008 FO, C/2007 W1, C/2007 M2, C/2007 D1, C/2007 B2
`204`	Schiaparelli Obs. in Italy, 13 in MPECs 2008-F58, 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 Y1, C/2007 T5, C/2007 T1, P/2007 C2, C/2006 S5, 2006 FK9, P/2005 Y2, C/2002 VQ94, 179P, 124P, 22P, 17P
`071`	Smolyan Obs. in Bulgaria, 6 in MPEC 2008-F63 -- C/2007 U1, C/2007 B2, C/2005 L3, 74P, 65P, 17P
`691`	Spacewatch 0.9m telescope in Arizona, 7 in MPECs 2008-F58, 2008-F59, 2008-F60 & 2008-F63 -- 2008 FT6, 2008 FS6, P/2006 B7, 136618, 102873, 5626, 158P
`291`	Spacewatch 1.8m telescope in Arizona, 17 in MPECs 2008-F58, 2008-F59 & 2008-F60 -- 2008 FT6, 2008 FS6, 2008 FN, 2008 FK, 2008 FG, 2008 FF5, 2008 EY68, 2008 ET7, 2008 ER7, 2008 EJ, 2008 EC69, 2008 EB9, 2008 EA9, 2008 DJ, 2008 AN33, 2005 GP21, 2002 AJ129
`A97`	Stammersdorf Obs. in Austria, 3 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, 17P
`147`	Suno Obs. in Italy, 2 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, 197P
`6735`	Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2008-F64 & 2008-F65 -- 2008 FX6, 2008 FW6
`A55`	Vallemare di Borbona Obs. in Italy, 2 in MPECs 2008-F58 & 2008-F65 -- 2008 FX6, 2003 FY6
`J70`	Vega del Thader Obs. in Spain, 7 in MPEC 2008-F63 -- C/2007 W1, C/2007 T1, C/2007 B2, C/2006 S5, 124P, 65P, 29P
`A48`	Verona Obs. in Italy, 1 in MPEC 2008-F63 -- C/2007 W1
`H47`	Vicksburg Obs. in Mississippi, 4 in MPEC 2008-F63 -- C/2007 T5, C/2006 S5, 180P, 124P
`B42`	Vitebsk Obs. in Belarus, 11 in MPEC 2008-F63 -- C/2007 G1, C/2007 B2, C/2005 L3, 197P, 124P, 110P, 79P, 70P, 65P, 46P, 22P
`C42`	Xingming Obs. in China, 3 in MPECs 2008-F62 & 2008-F63 -- C/2008 C1, C/2007 W1, 46P

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 31 March '08

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2355 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
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 FW6	JPL Sentry	2355	2065	1	2.0e-10	-7.68	-7.68	0	JPL: "Analysis based on 31 observations spanning 1.6644 days (2008-Mar-30.18598 to 2008-Mar-31.85041)." Diameter approximately 0.240 km. from mean, weighted H=20.7.

2008 FT6	JPL Sentry	1917	2020-2099	8	3.5e-09	-4.17	-4.40	0	JPL: "Analysis based on 12 observations spanning 1.9373 days (2008-Mar-29.3796 to 2008-Mar-31.31691)." Diameter approximately 1.400 km. from mean, weighted H=16.9.

2008 FF5	JPL Sentry	1434	2029-2087	8	4.4e-07	-4.73	-5.16	0	JPL: "Analysis based on 31 observations spanning 1.8732 days (2008-Mar-28.32219 to 2008-Mar-30.19535)." Diameter approximately 0.082 km. from mean, weighted H=23.1.
2008 FF5	NEODyS	1434	2029-2087	7	4.33e-07	-4.71	-5.06	0	NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2008/03/28.323 to 2008/03/30.196."

2008 FN	JPL Sentry	1434	2020-2105	52	7.9e-08	-3.17	-3.88	0	JPL: "Analysis based on 22 observations spanning 2.8789 days (2008-Mar-27.45915 to 2008-Mar-30.33805)." Diameter approximately 0.783 km. from mean, weighted H=18.2.
2008 FN	NEODyS	1434	2020-2090	49	5.81e-08	-3.26	-3.95	0	NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2008/03/27.460 to 2008/03/30.339."

2008 EA9	JPL Sentry	1434	2061-2106	11	4.0e-05	-6.11	-6.66	0	JPL: "Analysis based on 50 observations spanning 23.815 days (2008-Mar-06.40551 to 2008-Mar-30.22099)." Diameter approximately 0.010 km. from mean, weighted H=27.7.
2008 EA9	NEODyS	1434	2063-2090	16	4.13e-05	-6.09	-6.66	0	NEODyS: "Based on 51 optical observations (of which 1 are rejected as outliers) from 2008/03/06.406 to 2008/03/30.222."

2008 ER7	JPL Sentry	1434	2077-2104	7	3.0e-06	-3.20	-3.51	0	JPL: "Analysis based on 68 observations spanning 24.869 days (2008-Mar-06.33608 to 2008-Mar-31.20471)." Diameter approximately 0.320 km. from mean, weighted H=20.1.
2008 ER7	NEODyS	1434	2073-2089	4	5.29e-07	-3.87	-4.16	0	NEODyS: "Based on 68 optical observations (of which 0 are rejected as outliers) from 2008/03/06.337 to 2008/03/31.205."

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 31 March '08

Times are UTC for when items were noted or added by The Tracking News.

2355	Noted that JPL Sentry has posted 2008 FW6 as an impact risk - see above
2209	Grabbed MPEC 2008-F66 - 2008 FY6 - see above
2105	Grabbed MPEC 2008-F62 - Comet C/2008 C1 (Chen-Gao) - see above Grabbed MPEC 2008-F63 - Observations of Comets - see above Grabbed MPEC 2008-F64 - 2008 FW6 - see above Grabbed MPEC 2008-F65 - 2008 FX6 - see above
1917	Noted that JPL Sentry has posted 2008 FT6 as an impact risk - see above
1734	Grabbed MPEC 2008-F61 - 2008 FU6 - see above
1714	Grabbed MPEC 2008-F59 - 2008 FS6 - see above Grabbed MPEC 2008-F60 - 2008 FT6 - see above
1434	Noted that JPL Sentry has updated its 2008 EA9 risk assessment - see above Noted that NEODyS has updated its 2008 EA9 risk assessment - see above Noted that JPL Sentry has updated its 2008 ER7 risk assessment - see above Noted that NEODyS has updated its 2008 ER7 risk assessment - see above Noted that JPL Sentry has updated its 2008 FF5 risk assessment - see above Noted that NEODyS has updated its 2008 FF5 risk assessment - see above Noted that JPL Sentry has updated its 2008 FN risk assessment - see above Noted that NEODyS has updated its 2008 FN risk assessment - see above Grabbed MPEC 2008-F58 - Daily Orbit Update - see above

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