Contents on 16 June '09
- IAU Minor Planet Center
- NEOCP Activity -- none
- New MPECs -- six MPECs
- Observers -- 23 observing facilities
- Impact Risk Monitoring -- five 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 16 June '09
The MPC's NEO Confirmation Page is currently empty
The NEOCP is currently empty. There were eight listings noted earlier today.
New MPECs on 16 June '09
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2009-M01 time-stamped "06:06 UT" - Daily Orbit Update - see below
- MPEC 2009-M02 time-stamped "15:35 UT" - 2009 LU2 - see below
- MPEC 2009-M03 time-stamped "15:40 UT" - 2009 LV2 - see below
- MPEC 2009-M04 time-stamped "15:46 UT" - 2009 LW2 - see below
- MPEC 2009-M05 time-stamped "19:16 UT" - Comet P/2009 L2 (Yang-Gao) - see below
- MPEC 2009-M06 time-stamped "22:24 UT" - 2009 MA
MPEC 2009-M06 - "22:24 UT" - 2009 MA
- K09M00A 2009 MA (H=21.0 ~214m) was discovered at 0729 UT on 16 June by the Mt. Lemmon Survey (MLS), which observed it at June 16.31-34p3 and 16.38-39p3. The discovery was confirmed by the Catalina Sky Survey (CSS) (June 16.34-35p3 & 16.39-40p4), Ernesto Guido via RAS Obs. Mayhill (June 16.39-40p2), Guidestar Obs. (June 16.89-90p3), and Great Shefford Obs. (June 16.91-92p3).
MPEC 2009-M05 - "19:16 UT" - Comet P/2009 L2 (Yang-Gao)
- PK09L020 P/2009 L2 (Yang-Gao) (q=1.289 AU, Q=5.773 AU, TP=2009 May 19.898 TT) from Xingming Obs. (June 15.81-85p3 & 16.68-72p6), RAS Obs. Mayhill (June 16.45-46p3), Tzec Maun Obs. Mayhill (June 16.45-46p4), Grove Creek Obs. (June 16.46-49p5), RAS Obs. Moorook (June 16.52-53p2 & 16.64-68p11), JiangNanTianChi Obs. (June 16.56-57p3), Bisei Spaceguard Center (June 16.58-59p7), and Moriyama Obs. (June 16.61-63p4 & 16.69-70p2)
MPEC 2009-M04 - "15:46 UT" - 2009 LW2
- K09L02W 2009 LW2 (risk-listed, H=19.9 ~355m) was discovered at 1034 UT on 15 June by the Spacewatch 0.9m telescope, which observed it at June 15.44-48p3. The discovery was confirmed by the Spacewatch 1.8m telescope (June 16.33-34p2 & 16.38-40p2).
MPEC 2009-M03 - "15:40 UT" - 2009 LV2
- K09L02V 2009 LV2 (small asteroid, H=22.4 ~112m) was discovered at 0730 UT on 15 June by MLS, which observed it at June 15.31-34p4 and 15.39p3. The discovery was confirmed by Great Shefford Obs. (June 15.98-00p3) and Spacewatch 1.8m (June 16.22-23p3).
MPEC 2009-M02 - "15:35 UT" - 2009 LU2
- K09L02U 2009 LU2 (small asteroid, Earth MOID=5.9 LD, H=23.4 ~71m) was discovered at 0455 UT on 14 June by MLS, which observed it at June 14.20-27p8 and 16.16p3. The discovery was confirmed by Spacewatch 1.8m (June 16.15-16p3).
<< DOU on 16 June '09 >> MPEC 2009-M01 - "06:06 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K09L00X 2009 LX (Q=4.564 AU, arc=4 days, H=19.5 ~426m) from the Siding Spring Survey (SSS) (June 15.54p1 & 15.77p1)
- K09L00S 2009 LS (i=45.2°, arc=4 days, H=17.9 ~891m) from Doc Greiner Research Obs. (DGRO) (June 14.15-16p5), McCarthy Obs. (June 15.19-20p2), Marco Micheli via Faulkes Telescope North (June 15.32-33p4), Spacewatch 1.8m (June 15.39-40p3), Castelmartini Obs. (June 15.93p2), and Great Shefford Obs. (June 16.01-02p4)
- K09K04N 2009 KN4 (arc=23 days, H=18.2 ~776m) from SSS (June 15.60p2)
- Observations of recently (no longer) risk-listed objects
- K09K03E 2009 KE3 (Q=4.561 AU, arc=23 days, H=18.2 ~776m) from SSS (June 15.76p3)
- Observations of small asteroids (H>22.0)
- K09K21V 2009 KV21 (arc=16 days, H=24.6 ~41m) from SSS (June 15.75p2)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K09L00Q 2009 LQ (arc=4 days, H=21.9 ~141m) from CSS (June 15.28-29p4)
- Observations of other objects
- K09K07M 2009 KM7 (arc=20 days, H=18.0 ~851m) from Spacewatch 1.8m (June 15.42-43p3)
- K09K02V 2009 KV2 (arc=26 days, H=19.8 ~371m) from CSS (June 15.26-27p4)
- K09E02Q 2009 EQ2 (arc=100 days, H=20.8 ~234m) from Spacewatch 0.9m (June 15.25-28p3)
- K09A00V 2009 AV (i=45.9°, arc=164 days, H=18.0 ~851m) from Spacewatch 1.8m (June 15.44-45p3)
- K08O09S 2008 OS9 (arc=2 opp, H=19.4 ~446m) from Moletai Obs. (2008 Aug. 1.95-98p12 & 2008 Aug. 7.98-99p4)
- K02L00V 2002 LV (arc=3 opp, H=16.5 ~1.70 km) from Castelmartini Obs. (June 15.91-92p4)
- L6115 216115 2006 SU19 from CSS (June 15.38-40p4)
- L5442 215442 2002 MQ3 from Malina River Obs. (June 13.89-90p3)
- G2181 162181 1999 LF6 from CSS (June 15.33-35p4) and Castelmartini Obs. (June 15.87-88p5)
- A8519 108519 2001 LF from SSS (May 27.44-45p2 & 27.51-52p2)
- 85989 85989 1999 JD6 from CSS (June 15.30-32p4) and Castelmartini Obs. (June 15.90p4)
- 24761 24761 Ahau (1993 BW2) from CSS (June 15.41-42p4)
- 16960 16960 1998 QS52 from CSS (June 15.41-42p4)
- 15745 15745 1991 PM5 from San Benedetto Po Obs. (June 12.90-91p4)
- 09162 9162 Kwiila (1987 OA) from CSS (June 15.41-42p4)
- 05620 5620 Jasonwheeler (1990 OA) from GiaGa Obs. (June 11.97-99p2)
- 04015 4015 Wilson-Harrington (1979 VA) from Grove Creek Obs. (June 15.50p2)
- 03988 3988 1986 LA from CSS (June 15.18-20p4)
Observers on 16 June '09
A total of 23 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| 300 | Bisei Spaceguard Center in Japan, 1 in MPEC 2009-M05 -- P/2009 L2 |
| 160 | Castelmartini Obs. in Italy, 4 in MPEC 2009-M01 -- 2009 LS, 2002 LV, 85989, 162181 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2009-M01 & 2009-M06 -- 2009 MA, 2009 LQ, 2009 KV2, 85989, 24761, 216115, 16960, 162181, 9162, 3988 |
| H26 | Doc Greiner Research Obs. in Wisconsin, 1 in MPEC 2009-M01 -- 2009 LS |
| F659 | Marco Micheli in Hawaii via Faulkes Telescope North in Hawaii, 1 in MPEC 2009-M01 -- 2009 LS |
| 203 | GiaGa Obs. in Italy, 1 in MPEC 2009-M01 -- 5620 |
| J95 | Great Shefford Obs. in England, 3 in MPECs 2009-M01, 2009-M03 & 2009-M06 -- 2009 MA, 2009 LV2, 2009 LS |
| E16 | Grove Creek Obs. in New South Wales, 2 in MPECs 2009-M01 & 2009-M05 -- P/2009 L2, 4015 |
| A17 | Guidestar Obs. in Germany, 1 in MPEC 2009-M06 -- 2009 MA |
| D32 | JiangNanTianChi Obs. in China, 1 in MPEC 2009-M05 -- P/2009 L2 |
| B90 | Malina River Obs. in Italy, 1 in MPEC 2009-M01 -- 215442 |
| 932 | McCarthy Obs. in Connecticut, 1 in MPEC 2009-M01 -- 2009 LS |
| 152 | Moletai Obs. in Lithuania, 1 in MPEC 2009-M01 -- 2008 OS9 |
| 900 | Moriyama Obs. in Japan, 1 in MPEC 2009-M05 -- P/2009 L2 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2009-M02, 2009-M03 & 2009-M06 -- 2009 MA, 2009 LV2, 2009 LU2 |
| H06 | RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-M05 -- P/2009 L2 |
| H06% | Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-M06 -- 2009 MA |
| D90 | RAS Obs. Moorook in South Australia, 1 in MPEC 2009-M05 -- P/2009 L2 |
| 434 | San Benedetto Po Obs. in Italy, 1 in MPEC 2009-M01 -- 15745 |
| E12 | Siding Spring Survey (SSS) in New South Wales, 5 in MPEC 2009-M01 -- 2009 LX, 2009 KV21, 2009 KN4, 2009 KE3, 108519 |
| 691 | Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2009-M01 & 2009-M04 -- 2009 LW2, 2009 EQ2 |
| 291 | Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2009-M01, 2009-M02, 2009-M03 & 2009-M04 -- 2009 LW2, 2009 LV2, 2009 LU2, 2009 LS, 2009 KM7, 2009 AV |
| H10 | Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2009-M05 -- P/2009 L2 |
| C42 | Xingming Obs. in China, 1 in MPEC 2009-M05 -- P/2009 L2 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 16 June '09
| 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 |
| 2009 LW2 | JPL Sentry | 1832 | 2020-2109 | 36 | 3.4e-08 | -4.60 | -5.20 | 0 | JPL: "Analysis based on 7 observations spanning .96404 days (2009-Jun-15.44034 to 2009-Jun-16.40438)." Diameter approximately 0.350 km. from mean, weighted H=19.9. |
| 2009 LQ1 | NEODyS | 1330 | 2016-2067 | 13 | 1.92e-06 | -4.36 | -4.90 | 0 | NEODyS: "Based on 16 optical observations (of which 1 are rejected as outliers) from 2009/06/14.202 to 2009/06/15.242." |
| 2009 LX | JPL Sentry | 1330 | 2075-2080 | 2 | 2.1e-09 | -6.15 | -6.21 | 0 | JPL: "Analysis based on 13 observations spanning 4.0819 days (2009-Jun-11.69171 to 2009-Jun-15.77362)." Diameter approximately 0.430 km. from mean, weighted H=19.5. |
| NEODyS | 1330 | 2075 | 2 | 2.82e-09 | -6.22 | -6.26 | 0 | NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2009/06/11.692 to 2009/06/15.774." | |
| 2009 LS | NEODyS | 1330 | R E M O V E D | - | |||||
| JPL Sentry | 1330 | R E M O V E D | JPL: Risk listing removed at 0851 UTC. | ||||||
| 2009 KN4 | NEODyS | 1330 | R E M O V E D | - | |||||
| JPL Sentry | 1330 | R E M O V E D | JPL: Risk listing removed at 0850 UTC. | ||||||
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 '09
Times are UTC for when items were noted or added by The Tracking News.
| 2358 | Grabbed MPEC 2009-M06 - 2009 MA - see above |
| 2237 | Noted that the NEOCP has become empty |
| 2218 | Grabbed MPEC 2009-M05 - Comet P/2009 L2 (Yang-Gao) - see above |
| 1832 | Noted that JPL Sentry has posted 2009 LW2 as an impact risk - see above |
| 1604 | Grabbed MPEC 2009-M02 - 2009 LU2 - see above Grabbed MPEC 2009-M03 - 2009 LV2 - see above Grabbed MPEC 2009-M04 - 2009 LW2 - see above |
| 1330 | Noted that JPL Sentry has removed 2009 KN4 as an impact risk - see above Noted that NEODyS has removed 2009 KN4 as an impact risk - see above Noted that NEODyS has posted 2009 LQ1 as an impact risk - see above Noted that JPL Sentry has removed 2009 LS as an impact risk - see above Noted that NEODyS has removed 2009 LS as an impact risk - see above Noted that JPL Sentry has updated its 2009 LX risk assessment - see above Noted that NEODyS has updated its 2009 LX risk assessment - see above Grabbed MPEC 2009-M01 - Daily Orbit Update - see above |
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