Amateur observer Rob Matson's 76th SOHO comet discovery on June 25th has been announced as the 1,500th comet discovered with the solar physics spacecraft. See news at SOHO and ESA. Image credit: SOHO.
Contents on 29 June '08
- IAU Minor Planet Center
- NEOCP Activity -- six listings: 1 new, 5 updated
- New MPECs -- two MPECs
- Observers -- nineteen observing facilities
- Impact Risk Monitoring -- one object
- 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 29 June '08
The MPC's NEO Confirmation Page has 6 listings: 1 new, 5 updated
When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and five updated listings. Of these, two were "one nighters." The Tracking News counted a total of seven objects listed on the NEOCP at some point on this day.
New MPECs on 29 June '08
Minor Planet Electronic Circulars
There were two MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2008-M43 time-stamped "02:13 UT" - Comet C/2007 M1 (McNaught) - see below
- MPEC 2008-M44 time-stamped "06:06 UT" - Daily Orbit Update
<< DOU on 29 June '08 >> MPEC 2008-M44 - "06:06 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08L00A 2008 LA (small asteroid, arc=26 days, H=23.1 ~81m) from Astronomical Research Obs. (ARO) (June 27.10-12p3)
- Observations of recently (no longer) risk-listed objects
- K08L16W 2008 LW16 (arc=13 days, H=19.8 ~371m) from the Siding Spring Survey (SSS) (June 28.60-62p3)
- K08L16V 2008 LV16 (arc=14 days, H=20.1 ~323m) from Guidestar Obs. (June 28.95-96p3) and Great Shefford Obs. (June 29.07-08p3)
- K08L08W 2008 LW8 (arc=20 days, H=17.2 ~1.23 km) from Guidestar Obs. (June 28.98-99p2)
- K08K06D 2008 KD6 (arc=31 days, H=19.6 ~407m) from ARO (June 26.27-28p3), Naef Obs. (June 28.96-00p3), Mirasteilas Obs. (June 29.00-02p3), and Great Shefford Obs. (June 29.08-09p3)
- K08K05Z 2008 KZ5 (arc=29 days, H=20.0 ~339m) from ARO (June 27.23-24p3)
- Observations of small asteroids (H>22.0)
- K08L02H 2008 LH2 (arc=22 days, H=24.5 ~43m) from ARO (June 26.13-15p3)
- K08GB0A 2008 GA110 (Q=4.497 AU, arc=74 days, H=22.1 ~129m) from ARO (June 27.16-18p3)
- K08E84X 2008 EX84 (arc=107 days, H=22.3 ~117m) from ARO (June 27.21-23p2 at V=22.6-7)
- Observations of other objects
- K08L16Q 2008 LQ16 (arc=12 days, H=20.3 ~295m) from ARO (June 26.22-23p3)
- K08K00Q 2008 KQ (arc=31 days, H=20.6 ~257m) from ARO (June 26.12-13p3 & 27.18-20p3)
- K08J35T 2008 JT35 (Q=4.077 AU, arc=55 days, H=21.2 ~195m) from Peschiera del Garda Obs. (June 18.88-89p3), Ametlla del Valles Obs. (June 22.01-02p6), ARO (June 26.20-21p5), Wildberg Obs. (June 27.91p4), Linceo Obs. (June 27.96-98p3), Eschenberg Obs. (June 28.85p3), Verona Obs. (June 28.86p4), Madonna di Dossobuono Obs. (June 28.90p3), Capannoli Obs. (June 29.01-04p4), and Iluro Obs. (June 29.04p3)
- K08J26R 2008 JR26 (arc=45 days, H=19.9 ~355m) from ARO (June 27.21-22p5)
- K08J19V 2008 JV19 (arc=50 days, H=20.7 ~245m) from ARO (June 27.15-17p3)
- K08J00G 2008 JG (arc=57 days, H=20.9 ~224m) from ARO (June 27.12-14p3)
- K08H66E 2008 HE66 (arc=58 days, H=21.7 ~155m) from ARO (June 27.25p1)
- K08H03S 2008 HS3 (arc=60 days, H=21.7 ~155m) from Eschenberg Obs. (June 28.89p3) and Mirasteilas Obs. (June 29.07-09p3)
- K07X20J 2007 XJ20 (arc=3 opp, H=18.4 ~708m) from SSS (June 28.73-76p4)
- K07L00L 2007 LL (arc=2 opp, H=20.5 ~269m) from Peschiera del Garda Obs. (June 18.90-92p3 & 28.88-91p3), Eschenberg Obs. (June 28.88p7), and Verona Obs. (June 28.88-89p4)
- K06W02Z 2006 WZ2 (arc=3 opp, H=16.8 ~1.48 km) from SSS (June 28.72-75p4)
- K05T45U 2005 TU45 (arc=3 opp, H=17.1 ~1.29 km) from Eschenberg Obs. (June 28.87p3), Madonna di Dossobuono Obs. (June 28.91-92p3), Verona Obs. (June 28.91-92p4), and El Guijo Obs. (June 28.96-97p2)
- K05N07B 2005 NB7 (arc=3 opp, H=18.7 ~616m) from Eschenberg Obs. (June 28.90-91p7)
- K02X04Y 2002 XY4 (i=43.1°, arc=4 opp, H=19.0 ~537m) from ARO (June 26.26p2)
- K01R18B 2001 RB18 (arc=3 opp, H=18.5 ~676m) from ARO (June 27.13-15p3)
- J96S00K 1996 SK (Q=4.363 AU, arc=5 opp, H=16.9 ~1.41 km) from SSS (June 28.36-37p4)
- G3335 163335 2002 LJ from Tentlingen Obs. (June 27.90-95p3)
- G2980 162980 2001 RR17 from Silver Spring Obs. (June 25.08-09p2)
- G2186 162186 1999 OP3 from Naef Obs. (June 29.01-03p2)
- E3678 143678 2003 SA224 from SSS (June 24.40-43p4)
- 86829 86829 2000 GR146 from SSS (June 28.72-75p4)
- 36236 36236 1999 VV from SSS (June 24.36-38p4)
- 35107 35107 1991 VH from El Guijo Obs. (June 28.94-95p3)
- 18736 18736 1998 NU from SSS (June 28.39-40p4)
- 11398 11398 1998 YP11 from Iluro Obs. (June 29.06-07p3)
- 08567 8567 1996 HW1 from Ametlla del Valles Obs. (June 22.10-13p4) and Iluro Obs. (June 29.13p3)
- 07889 7889 1994 LX from Ametlla del Valles Obs. (June 22.02p6) and Wildberg Obs. (June 27.88p4)
- 04954 4954 Eric (1990 SQ) from SSS (June 28.36-37p4)
- 01980 1980 Tezcatlipoca (1950 LA) from SSS (June 24.44-47p4)
- 01917 1917 Cuyo (1968 AA) from Iluro Obs. (June 29.12p3)
MPEC 2008-M43 - "02:13 UT" - Comet C/2007 M1 (McNaught)
- CK07M010 C/2007 M1 (McNaught) (i=139.7°, q=7.475 AU, Q=3226.072 AU, TP=2008 Aug. 11.35475 TT) from Pla D'Arguines Obs. (June 22.02-03p4 & 27.97-98p3)
Observers on 29 June '08
Nineteen observing facilities appeared in this day's MPECs.
| Code | Observer / observatory |
|---|---|
| B37 | Ametlla del Valles Obs. in Spain, 3 in MPEC 2008-M44 -- 2008 JT35, 8567, 7889 |
| H55 | Astronomical Research Obs. (ARO) in Illinois, 15 in MPEC 2008-M44 -- 2008 LQ16, 2008 LH2, 2008 LA, 2008 KZ5, 2008 KQ, 2008 KD6, 2008 JV19, 2008 JT35, 2008 JR26, 2008 JG, 2008 HE66, 2008 GA110, 2008 EX84, 2002 XY4, 2001 RB18 |
| B09 | Capannoli Obs. in Italy, 1 in MPEC 2008-M44 -- 2008 JT35 |
| J27 | El Guijo Obs. in Spain, 2 in MPEC 2008-M44 -- 2005 TU45, 35107 |
| 151 | Eschenberg Obs. in Switzerland, 5 in MPEC 2008-M44 -- 2008 JT35, 2008 HS3, 2007 LL, 2005 TU45, 2005 NB7 |
| J95 | Great Shefford Obs. in England, 2 in MPEC 2008-M44 -- 2008 LV16, 2008 KD6 |
| A17 | Guidestar Obs. in Germany, 2 in MPEC 2008-M44 -- 2008 LW8, 2008 LV16 |
| B19 | Iluro Obs. in Spain, 4 in MPEC 2008-M44 -- 2008 JT35, 11398, 8567, 1917 |
| J59 | Linceo Obs. in Spain, 1 in MPEC 2008-M44 -- 2008 JT35 |
| 560 | Madonna di Dossobuono Obs. in Italy, 2 in MPEC 2008-M44 -- 2008 JT35, 2005 TU45 |
| B67 | Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-M44 -- 2008 KD6, 2008 HS3 |
| A13 | Naef Obs. in Switzerland, 2 in MPEC 2008-M44 -- 2008 KD6, 162186 |
| A53 | Peschiera del Garda Obs. in Italy, 2 in MPEC 2008-M44 -- 2008 JT35, 2007 LL |
| 941 | Pla D'Arguines Obs. in Spain, 1 in MPEC 2008-M43 -- C/2007 M1 |
| E12 | Siding Spring Survey (SSS) in New South Wales, 10 in MPEC 2008-M44 -- 2008 LW16, 2007 XJ20, 2006 WZ2, 1996 SK, 86829, 36236, 18736, 143678, 4954, 1980 |
| H85 | Silver Spring Obs. in Maryland, 1 in MPEC 2008-M44 -- 162980 |
| A16 | Tentlingen Obs. in Switzerland, 1 in MPEC 2008-M44 -- 163335 |
| A48 | Verona Obs. in Italy, 3 in MPEC 2008-M44 -- 2008 JT35, 2007 LL, 2005 TU45 |
| 198 | Wildberg Obs. in Germany, 2 in MPEC 2008-M44 -- 2008 JT35, 7889 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 29 June '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 LA | NEODyS | 1502 | 2058-2070 | 4 | 1.02e-04 | -3.13 | -3.13 | 0 | NEODyS: "Based on 82 optical observations (of which 1 are rejected as outliers) from 2008/06/01.170 to 2008/06/27.116." |
| JPL Sentry | 1501 | 2058-2094 | 4 | 1.0e-04 | -3.12 | -3.12 | 0 | JPL: "Analysis based on 81 observations spanning 25.946 days (2008-Jun-01.16922 to 2008-Jun-27.115408)." Diameter approximately 0.081 km. from mean, weighted H=23.1. | |
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 29 June '08
Times are UTC for when items were noted or added by The Tracking News.
| 1502 | Noted that NEODyS has updated its 2008 LA risk assessment - see above |
| 1501 | Noted that JPL Sentry has updated its 2008 LA risk assessment - see above Grabbed MPEC 2008-M44 - Daily Orbit Update - see above |
| 0454 | Grabbed MPEC 2008-M43 - Comet C/2007 M1 (McNaught) - see above |
Publisher information, privacy statement, and disclaimer.
This page is © Copyright 2008 Columbine, Inc. - All Rights Reserved
Any mentioned trademarks are the property of their respective owners.
Various tabular formats and data used on this page are acknowledged as belonging to JPL, MPC, NEODyS, and/or others.
Do NOT copy, mirror, or embed this page, but you are welcome to link to it, and you may embed the RSS news feed. All information here is subject to very frequent change during the day of news compilation. Individuals may make copies for their own private, non-commercial use. Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com> (HTML 4.01 validation).
Important news updates are flagged by A/CC's RSS news feed (link).