Contents on 13 June '08
- IAU Minor Planet Center
- NEOCP Activity -- three listings: 3 updated
- New MPECs -- two MPECs
- Observers -- eleven observing facilities
- Impact Risk Monitoring -- two 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 13 June '08
The MPC's NEO Confirmation Page has 3 listings: 3 updated
When last checked at 2358 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three updated listings. Of these, one was a "one nighter."
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 13 June '08
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been two MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2008-L50 time-stamped "06:09 UT" - Daily Orbit Update - see below
- MPEC 2008-L51 time-stamped "23:21 UT" - 2006 HP122
MPEC 2008-L51 - "23:21 UT" - 2006 HP122
- K06HC2P 2006 HP122 (KBO, q=38.681 AU, Q=54.199 AU, H=7.2 ~123 km) from Las Campanas Obs. (2007 July 11.98p1 & 2007 July 12.14p1) and Cerro Tololo Inter-American Obs. (CTIO) (June 7.02p1, 7.09p1, 7.18p1, 9.03p1 & 9.16p1)
<< DOU on 13 June '08 >> MPEC 2008-L50 - "06:09 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08L02G 2008 LG2 (small asteroid, arc=9 days, H=25.4 ~28m) from the Spacewatch 1.8m telescope (June 12.16-17p3)
- K08K11N 2008 KN11 (small asteroid, arc=13 days, H=23.2 ~78m) from Spacewatch 1.8m (June 12.28p3)
- Observations of recently (no longer) risk-listed objects
- K08K05Z 2008 KZ5 (arc=14 days, H=20.0 ~339m) from Spacewatch 1.8m (June 12.29-31p3)
- Observations of small asteroids (H>22.0)
- K08L02H 2008 LH2 (arc=8 days, H=24.7 ~39m) from Petit Jean Mtn. South Obs. (PJMSO) (June 12.32-34p6)
- K08L00C 2008 LC (arc=11 days, H=24.6 ~41m) from Spacewatch 1.8m (June 12.24-25p3) and program code 6 via Faulkes Telescope North (June 12.40-41p6)
- Observations of other objects
- K08K28V 2008 KV28 (arc=12 days, H=20.4 ~282m) from Spacewatch 1.8m (June 12.23p2 at V=21.8-22.2)
- K08K00Q 2008 KQ (arc=16 days, H=20.7 ~245m) from Spacewatch 1.8m (June 12.25-27p3)
- K08J35T 2008 JT35 (Q=4.084 AU, arc=38 days, H=21.0 ~214m) from PJMSO (June 12.27-28p7)
- K08H03S 2008 HS3 (arc=43 days, H=21.7 ~155m) from PJMSO (June 12.30p6)
- K07L00L 2007 LL (arc=2 opp, H=20.4 ~282m) from PJMSO (June 12.35p5)
- K07F00D 2007 FD (arc=4 opp, H=17.0 ~1.35 km) from Spacewatch 1.8m (June 12.19-21p3)
- K06SL7Z 2006 SZ217 (arc=3 opp, H=17.6 ~1.02 km) from Spacewatch 1.8m (June 12.38-39p3)
- K06H29R 2006 HR29 (arc=3 opp, H=20.7 ~245m) from Tiki Obs. (2007 April 9.58-60p2)
- K06D14P 2006 DP14 (q=0.306 AU, arc=2 opp, H=18.9 ~562m) from Tiki Obs. (2007 May 8.48p1 & 2007 May 8.53p1)
- K05V05T 2005 VT5 (arc=2 opp, H=19.2 ~490m) from PJMSO (June 12.37-39p5)
- K05T45U 2005 TU45 (arc=3 opp, H=17.1 ~1.29 km) from LINEAR (June 12.28-32p5), PJMSO (June 12.35-37p5), Atlante Obs. (June 12.97-98p3), and El Guijo Obs. (June 13.08-11p2)
- K05N07B 2005 NB7 (arc=3 opp, H=18.7 ~616m) from PJMSO (June 12.31-32p5)
- K04J20W 2004 JW20 (arc=5 opp, H=20.7 ~245m) from Spacewatch 1.8m (June 12.36-37p3 at V=22.6)
- K03G00W 2003 GW (i=49.4°, arc=3 opp, H=16.8 ~1.48 km) from LINEAR (June 12.17-21p5)
- K02J00C 2002 JC (i=40.9°, arc=6 opp, H=17.3 ~1.17 km) from the Catalina Sky Survey (CSS) (June 12.17-18p4)
- K00AK5D 2000 AD205 (arc=2 opp, H=18.6 ~645m) from PJMSO (June 12.28-29p5) and El Guijo Obs. (June 13.04-05p3)
- 35107 35107 1991 VH from LINEAR (June 12.27-31p5), Atlante Obs. (June 12.94-95p3), and El Guijo Obs. (June 13.05-06p3)
- 07889 7889 1994 LX from Ametlla del Valles Obs. (June 11.08-09p10) and Atlante Obs. (June 12.92-93p3)
- 07482 7482 1994 PC1 from CSS (June 12.41-43p4)
Observers on 13 June '08
Eleven observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| B37 | Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-L50 -- 7889 |
| J51 | Atlante Obs. in the Canary Islands, 3 in MPEC 2008-L50 -- 2005 TU45, 35107, 7889 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2008-L50 -- 2002 JC, 7482 |
| 807 | Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2008-L51 -- 2006 HP122 |
| J27 | El Guijo Obs. in Spain, 3 in MPEC 2008-L50 -- 2005 TU45, 2000 AD205, 35107 |
| F656 | program code 6 via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-L50 -- 2008 LC |
| 704 | LINEAR in New Mexico, 3 in MPEC 2008-L50 -- 2005 TU45, 2003 GW, 35107 |
| 304 | Las Campanas Obs. in Chile, 1 in MPEC 2008-L51 -- 2006 HP122 |
| H45 | Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 8 in MPEC 2008-L50 -- 2008 LH2, 2008 JT35, 2008 HS3, 2007 LL, 2005 VT5, 2005 TU45, 2005 NB7, 2000 AD205 |
| 291 | Spacewatch 1.8m telescope in Arizona, 9 in MPEC 2008-L50 -- 2008 LG2, 2008 LC, 2008 KZ5, 2008 KV28, 2008 KQ, 2008 KN11, 2007 FD, 2006 SZ217, 2004 JW20 |
| F85 | Tiki Obs. in Tahiti, 2 in MPEC 2008-L50 -- 2006 HR29, 2006 DP14 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 13 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 LG2 | JPL Sentry | 1315 | 2038-2105 | 18 | 7.8e-06 | -5.60 | -6.04 | 0 | JPL: "Analysis based on 83 observations spanning 8.8508 days (2008-Jun-03.31737 to 2008-Jun-12.16813)." Diameter approximately 0.028 km. from mean, weighted H=25.4. |
| NEODyS | 1315 | 2055-2087 | 14 | 4.91e-06 | -5.84 | -6.37 | 0 | NEODyS: "Based on 83 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/12.169." | |
| 2008 KN11 | JPL Sentry | 1315 | 2037-2046 | 4 | 5.2e-07 | -5.22 | -5.57 | 0 | JPL: "Analysis based on 93 observations spanning 12.950 days (2008-May-30.33435 to 2008-Jun-12.28483)." Diameter approximately 0.076 km. from mean, weighted H=23.3. |
| NEODyS | 1315 | 2030-2046 | 6 | 5.0e-07 | -5.23 | -5.53 | 0 | NEODyS: "Based on 93 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/12.286." | |
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 13 June '08
Times are UTC for when items were noted or added by The Tracking News.
| 2358 | Grabbed MPEC 2008-L51 - 2006 HP122 - see above |
| 1315 | Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above Noted that NEODyS has updated its 2008 KN11 risk assessment - see above Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above Noted that NEODyS has updated its 2008 LG2 risk assessment - see above Grabbed MPEC 2008-L50 - Daily Orbit Update - see above |
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