Contents on 20 June '08
- IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- one MPEC
- Observers -- twelve observing facilities
- Impact Risk Monitoring -- four 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 20 June '08
The MPC's NEO Confirmation Page is currently empty
The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (last checked at 2357 UTC).
New MPECs on 20 June '08
Minor Planet Electronic Circulars
As of last check at 2357 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
<< DOU on 20 June '08 >> MPEC 2008-M21 - "06:06 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08L16W 2008 LW16 (arc=4 days, H=19.7 ~389m) from Astronomical Research Obs. (ARO) (June 19.28-29p5) and Magdalena Ridge Obs. (MRO) (June 19.37-38p3)
- K08L16V 2008 LV16 (arc=4 days, H=20.1 ~323m) from ARO (June 19.24-26p5)
- K08L00A 2008 LA (small asteroid, arc=19 days, H=23.2 ~78m) from ARO (June 19.15-16p3) and Great Shefford Obs. (June 19.99-01p2)
- K08K11N 2008 KN11 (small asteroid, arc=21 days, H=23.3 ~74m) from ARO (June 19.16-17p5), Balzaretto Obs. (June 19.88-89p2), and Great Shefford Obs. (June 19.97-98p3)
- Observations of recently (no longer) risk-listed objects
- K08L08W 2008 LW8 (arc=10 days, H=17.2 ~1.23 km) from ARO (June 19.34-35p2)
- K08K05Z 2008 KZ5 (arc=21 days, H=20.0 ~339m) from ARO (June 19.15-16p2)
- Observations of small asteroids (H>22.0)
- K08L02H 2008 LH2 (arc=15 days, H=24.6 ~41m) from ARO (June 19.21-22p3)
- Observations of other objects
- K08L16Q 2008 LQ16 (arc=5 days, H=20.3 ~295m) from ARO (June 19.26-27p4) and Jim Young via Table Mtn. Obs. (June 19.37-41p4)
- K08K02W 2008 KW2 (i=37.4°, arc=22 days, H=19.7 ~389m) from ARO (June 19.17-19p3)
- K08J35T 2008 JT35 (Q=4.081 AU, arc=46 days, H=21.0 ~214m) from Petit Jean Mtn. South Obs. (PJMSO) (June 19.24p7), Verona Obs. (June 19.86-87p4), and Atlante Obs. (June 19.92-93p3)
- K08J26R 2008 JR26 (arc=37 days, H=19.9 ~355m) from ARO (June 19.16-17p3)
- K08J00F 2008 JF (arc=49 days, H=17.9 ~891m) from ARO (June 19.10p3)
- K08H66E 2008 HE66 (arc=50 days, H=21.7 ~155m) from ARO (June 19.24-25p3)
- K08H04V 2008 HV4 (arc=50 days, H=19.4 ~446m) from ARO (June 19.11-14p3)
- K07M04C 2007 MC4 (arc=2 opp, H=21.1 ~204m) from ARO (June 19.28-30p3)
- K05T45U 2005 TU45 (arc=3 opp, H=17.1 ~1.29 km) from PJMSO (June 19.25-26p5), Atlante Obs. (June 19.98-99p3), and El Guijo Obs. (June 20.06-08p3)
- K04X14O 2004 XO14 (Q=4.154 AU, arc=4 opp, H=16.1 ~2.04 km, q=1.190 AU) from ARO (June 19.26-27p3)
- K00Q07W 2000 QW7 (arc=2 opp, H=19.8 ~371m) from the Spacewatch 0.9m telescope (June 12.20-25p3)
- K00AK5D 2000 AD205 (arc=2 opp, H=18.6 ~645m) from PJMSO (June 19.23p6) and Verona Obs. (June 19.88-89p4)
- 86878 86878 2000 HD24 from Spacewatch 0.9m (June 13.29-33p2)
- 35107 35107 1991 VH from El Guijo Obs. (June 19.98-99p3)
- 11398 11398 1998 YP11 from Atlante Obs. (June 19.00-01p3)
- 08567 8567 1996 HW1 from Atlante Obs. (June 20.09-10p3)
- 04179 4179 Toutatis (1989 AC) from ARO (June 19.31-32p3)
- 01980 1980 Tezcatlipoca (1950 LA) from program code 2 via U.S. Naval Obs. Flagstaff Station (USNO Flagstaff) (2001 April 1.29p1, 2001 April 14.24p1, 2001 April 16.24p1, 2001 April 17.23p1, 2001 April 23.21p1, 2001 April 26.20p1, 2001 April 28.20p1, 2001 April 29.19p1, 2004 Dec. 13.48p1, 2006 June 4.47p1, 2006 June 5.47p1, 2006 June 6.47p1, 2006 July 11.41p1, 2006 July 13.41p1 & 2006 July 24.39p1)
- 01917 1917 Cuyo (1968 AA) from Atlante Obs. (June 20.11-12p3)
- 01866 1866 Sisyphus (1972 XA) from Ametlla del Valles Obs. (June 18.93p3)
- 01036 1036 Ganymed (1924 TD) from USNO Flagstaff/code 2 (2001 Jan. 5.53p1, 2001 Jan. 26.47p1, 2001 Feb. 1.45p1, 2001 Feb. 3.45p1, 2001 Feb. 9.43p1, 2001 Feb. 10.43p1, 2001 March 22.30p1, 2001 March 30.27p1, 2001 March 31.27p1, 2001 April 2.26p1, 2001 April 14.23p1, 2001 April 15.22p1, 2001 April 17.22p1, 2001 April 29.18p1, 2001 May 1.17p1, 2001 May 2.17p1, 2001 May 8.15p1, 2004 Dec. 20.54p1, 2004 Dec. 25.53p1, 2005 Jan. 29.43p1, 2005 March 10.30p1, 2005 March 22.26p1, 2005 April 12.20p1, 2006 Jan. 29.54p1, 2006 Feb. 2.53p1, 2006 Feb. 3.53p1, 2006 Feb. 15.50p1, 2006 April 10.34p1, 2006 April 12.33p1, 2006 April 24.29p1, 2006 April 25.29p1, 2006 April 26.28p1, 2006 April 30.27p1, 2007 Nov. 1.52p1, 2007 Nov. 7.50p1 & 2007 Dec. 6.42p1)
Observers on 20 June '08
Twelve observing facilities appear in today's MPEC.
| Code | Observer / observatory |
|---|---|
| B37 | Ametlla del Valles Obs. in Spain, 1 in MPEC 2008-M21 -- 1866 |
| H55 | Astronomical Research Obs. (ARO) in Illinois, 16 in MPEC 2008-M21 -- 2008 LW8, 2008 LW16, 2008 LV16, 2008 LQ16, 2008 LH2, 2008 LA, 2008 KZ5, 2008 KW2, 2008 KN11, 2008 JR26, 2008 JF, 2008 HV4, 2008 HE66, 2007 MC4, 2004 XO14, 4179 |
| J51 | Atlante Obs. in the Canary Islands, 5 in MPEC 2008-M21 -- 2008 JT35, 2005 TU45, 11398, 8567, 1917 |
| A81 | Balzaretto Obs. in Italy, 1 in MPEC 2008-M21 -- 2008 KN11 |
| J27 | El Guijo Obs. in Spain, 2 in MPEC 2008-M21 -- 2005 TU45, 35107 |
| J95 | Great Shefford Obs. in England, 2 in MPEC 2008-M21 -- 2008 LA, 2008 KN11 |
| H01 | Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2008-M21 -- 2008 LW16 |
| H45 | Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2008-M21 -- 2008 JT35, 2005 TU45, 2000 AD205 |
| 691 | Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-M21 -- 2000 QW7, 86878 |
| 6735 | Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-M21 -- 2008 LQ16 |
| 6892 | program code 2 via U.S. Naval Obs. Flagstaff Station (USNO Flagstaff) in Arizona, 2 in MPEC 2008-M21 -- 1980, 1036 |
| A48 | Verona Obs. in Italy, 2 in MPEC 2008-M21 -- 2008 JT35, 2000 AD205 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 20 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 LW16 | JPL Sentry | 1444 | 2070 | 1 | 8.7e-10 | -6.44 | -6.44 | 0 | JPL: "Analysis based on 34 observations spanning 3.9969 days (2008-Jun-15.38141 to 2008-Jun-19.37831)." Diameter approximately 0.400 km. from mean, weighted H=19.6. |
| NEODyS | 1444 | R E M O V E D | - | ||||||
| 2008 LV16 | NEODyS | 1446 | 2015-2089 | 24 | 7.62e-07 | -3.41 | -4.15 | 0 | NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2008/06/15.381 to 2008/06/19.256." |
| JPL Sentry | 1444 | 2021-2081 | 17 | 6.4e-07 | -3.44 | -4.04 | 0 | JPL: "Analysis based on 34 observations spanning 3.8757 days (2008-Jun-15.3798 to 2008-Jun-19.255496)." Diameter approximately 0.339 km. from mean, weighted H=20.0. | |
| 2008 LA | NEODyS | 1446 | 2058-2079 | 7 | 3.61e-05 | -3.62 | -3.63 | 0 | NEODyS: "Based on 66 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/20.009." |
| JPL Sentry | 1444 | 2058-2107 | 7 | 3.7e-05 | -3.61 | -3.62 | 0 | JPL: "Analysis based on 66 observations spanning 18.839 days (2008-Jun-01.16922 to 2008-Jun-20.00863)." Diameter approximately 0.078 km. from mean, weighted H=23.2. | |
| 2008 KN11 | NEODyS | 1446 | 2046 | 1 | 2.6e-07 | -5.57 | -5.57 | 0 | NEODyS: "Based on 129 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/19.985." |
| JPL Sentry | 1444 | 2046 | 1 | 3.5e-07 | -5.44 | -5.44 | 0 | JPL: "Analysis based on 129 observations spanning 20.650 days (2008-May-30.33435 to 2008-Jun-19.98442)." Diameter approximately 0.075 km. from mean, weighted H=23.3. | |
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 20 June '08
Times are UTC for when items were noted or added by The Tracking News.
| 1446 | Noted that NEODyS has updated its 2008 KN11 risk assessment - see above Noted that NEODyS has updated its 2008 LA risk assessment - see above Noted that NEODyS has updated its 2008 LV16 risk assessment - see above |
| 1444 | Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above Noted that JPL Sentry has updated its 2008 LA risk assessment - see above Noted that JPL Sentry has updated its 2008 LV16 risk assessment - see above Noted that JPL Sentry has updated its 2008 LW16 risk assessment - see above Noted that NEODyS has removed 2008 LW16 as an impact risk - see above Grabbed MPEC 2008-M21 - Daily Orbit Update - see above |
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