Contents on 28 May '09
- IAU Minor Planet Center
- NEOCP Activity -- two listings: 2 updated
- New MPECs -- six MPECs
- Observers -- 23 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 28 May '09
The MPC's NEO Confirmation Page has 2 listings: 2 updated
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter." So far The Tracking News has counted a total of six listings on the NEOCP at some point today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.
New MPECs on 28 May '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-K60 time-stamped "01:32 UT" - 2009 KC7 - see below
- MPEC 2009-K61 time-stamped "06:08 UT" - Daily Orbit Update - see below
- MPEC 2009-K62 time-stamped "14:44 UT" - Comet C/2009 K3 (Beshore) - see below
- MPEC 2009-K63 time-stamped "15:21 UT" - Comet C/2009 K4 (Gibbs) - see below
- MPEC 2009-K64 time-stamped "17:27 UT" - 2009 KM7 - see below
- MPEC 2009-K65 time-stamped "18:33 UT" - Comet 126P/IRAS
MPEC 2009-K65 - "18:33 UT" - Comet 126P/IRAS
- 0126P 126P/IRAS (i=45.8°, q=1.713 AU, Q=9.582 AU, TP=2010 Feb. 22.66842 TT) from Tzec Maun Obs. Pingelly (May 27.59-62p3 & 28.51-57p3)
MPEC 2009-K64 - "17:27 UT" - 2009 KM7
- K09K07M 2009 KM7 (H=17.8 ~933m) was discovered at 1013 UT on 26 May by the Spacewatch 0.9m telescope, which observed it at May 26.43-45p3. The discovery was confirmed by Catalina Station (May 26.48p3), the Spacewatch 1.8m telescope (May 27.45-46p3 & 28.43-44p3), and Magdalena Ridge Obs. (MRO) (May 28.42-45p5).
MPEC 2009-K63 - "15:21 UT" - Comet C/2009 K4 (Gibbs)
- CK09K040 C/2009 K4 (Gibbs) (i=34.8°, q=1.563 AU, TP=2009 June 18.433 TT) from the Catalina Sky Survey (CSS) (May 27.15p4 & 27.20-21p8), Table Mtn. Obs. (May 27.22-23p6 & 28.17-22p7), Alter Satzberg Obs. (May 27.84-88p4), Stixendorf Obs. (May 27.91-93p2), RAS Obs. Mayhill (May 28.16-18p3), Catalina Sta. (May 28.16-17p4), and the Mt. Lemmon Survey (MLS) (May 28.18-19p4)
MPEC 2009-K62 - "14:44 UT" - Comet C/2009 K3 (Beshore)
- CK09K030 C/2009 K3 (Beshore) (i=146.7°, q=3.902 AU, TP=2011 Jan. 9.266 TT) from MLS (May 26.16-19p4, 26.24-27p4, 27.23-24p4 & 28.22-23p4) and MRO (May 28.25-27p4)
<< DOU on 28 May '09 >> MPEC 2009-K61 - "06:08 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K09K05D 2009 KD5 (arc=2 days, H=18.3 ~741m) from Shenton Park Obs. (May 27.79p3) and La Sagra Obs. (May 28.10-15p6)
- K09K00K 2009 KK (arc=9 days, H=20.5 ~269m) from Linz Obs. (May 25.01-02p2)
- Observations of other objects
- K09J02M 2009 JM2 (arc=16 days, H=19.3 ~467m) from Balzaretto Obs. (May 26.87-88p3) and Atlante Obs. (May 27.96-97p3)
- K08C00M 2008 CM (arc=2 opp, H=17.1 ~1.29 km) from Shenton Park Obs. (May 25.77-79p2)
- K06K37Z 2006 KZ37 (arc=3 opp, H=19.1 ~513m) from CSS (May 27.39-42p4)
- K05L19Y 2005 LY19 (arc=3 opp, H=16.4 ~1.78 km) from the Siding Spring Survey (SSS) (May 27.61-63p4)
- K02L38T 2002 LT38 (arc=2 opp, H=20.0 ~339m) from Beta Orionis Obs. (May 28.05-06p3)
- L3869 213869 2003 SG170 from Capannoli Obs. (May 27.93-94p2)
- E3651 143651 2003 QO104 from Balzaretto Obs. (May 26.84p5)
- E2781 142781 2002 UM11 from Spacewatch 0.9m (May 27.27-31p3)
- D6617 136617 1994 CC from Beta Orionis Obs. (May 28.05p2)
- 89355 89355 2001 VS78 from Zonalunar Obs. (May 26.90p1 & 26.96p1)
- 85989 85989 1999 JD6 from CSS (May 27.35-38p4) and Capannoli Obs. (May 27.90-91p2)
- 85867 85867 1999 BY9 from Bigmuskie Obs. (May 27.87-88p2)
- 27346 27346 2000 DN8 from CSS (May 27.43-45p3)
- 07088 7088 Ishtar (1992 AA) from Mirasteilas Obs. (May 27.88-91p3)
MPEC 2009-K60 - "01:32 UT" - 2009 KC7
- K09K07C 2009 KC7 (Q=4.031 AU, H=19.0 ~537m) was discovered at 0932 UT on 27 May by MLS, which observed it at May 27.40-47p12. The discovery was confirmed by Engelhardt Obs. Zelenchukskaya Station (May 28.00-01p4).
Observers on 28 May '09
A total of 23 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| B03 | Alter Satzberg Obs. in Austria, 1 in MPEC 2009-K63 -- C/2009 K4 |
| J51 | Atlante Obs. in the Canary Islands, 1 in MPEC 2009-K61 -- 2009 JM2 |
| A81 | Balzaretto Obs. in Italy, 2 in MPEC 2009-K61 -- 2009 JM2, 143651 |
| I32 | Beta Orionis Obs. in Argentina, 2 in MPEC 2009-K61 -- 2002 LT38, 136617 |
| B88 | Bigmuskie Obs. in Italy, 1 in MPEC 2009-K61 -- 85867 |
| B09 | Capannoli Obs. in Italy, 2 in MPEC 2009-K61 -- 85989, 213869 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 4 in MPECs 2009-K61 & 2009-K63 -- C/2009 K4, 2006 KZ37, 85989, 27346 |
| 693 | Catalina Station in Arizona, 2 in MPECs 2009-K63 & 2009-K64 -- 2009 KM7, C/2009 K4 |
| 114 | Engelhardt Obs. Zelenchukskaya Station in Karachay-Cherkessia, 1 in MPEC 2009-K60 -- 2009 KC7 |
| J75 | La Sagra Obs. in Spain, 1 in MPEC 2009-K61 -- 2009 KD5 |
| 540 | Linz Obs. in Austria, 1 in MPEC 2009-K61 -- 2009 KK |
| H01 | Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2009-K62 & 2009-K64 -- 2009 KM7, C/2009 K3 |
| B67 | Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-K61 -- 7088 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2009-K60, 2009-K62 & 2009-K63 -- 2009 KC7, C/2009 K4, C/2009 K3 |
| H06 | RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-K63 -- C/2009 K4 |
| D21 | Shenton Park Obs. in Western Australia, 2 in MPEC 2009-K61 -- 2009 KD5, 2008 CM |
| E12 | Siding Spring Survey in New South Wales, 1 in MPEC 2009-K61 -- 2005 LY19 |
| 691 | Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2009-K61 & 2009-K64 -- 2009 KM7, 142781 |
| 291 | Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2009-K64 -- 2009 KM7 |
| A71 | Stixendorf Obs. in Austria, 1 in MPEC 2009-K63 -- C/2009 K4 |
| 673 | Table Mtn. Obs. in southern California, 1 in MPEC 2009-K63 -- C/2009 K4 |
| D25 | Tzec Maun Obs. Pingelly in Western Australia, 1 in MPEC 2009-K65 -- 126P |
| J08 | Zonalunar Obs. in Spain, 1 in MPEC 2009-K61 -- 89355 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 28 May '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 KD5 | JPL Sentry | 1319 | R E M O V E D | JPL: Risk listing removed at 0853 UTC. | |||||
| 2009 KK | JPL Sentry | 1912 | 2022-2038 | 4 | 3.8e-05 | -1.56 | -1.56 | 1 | JPL: "Analysis based on 75 observations spanning 8.9603 days (2009-May-17.25987 to 2009-May-26.22015)." Diameter approximately 0.270 km. from mean, weighted H=20.5. |
| NEODyS | 1319 | 2022-2038 | 2 | 3.85e-05 | -1.56 | -1.56 | 1 | NEODyS: "Based on 75 optical observations (of which 0 are rejected as outliers) from 2009/05/17.261 to 2009/05/26.221. NOTE: The Virtual Impactor in 2022/05/29.763 ... is rated as Torino Scale 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 28 May '09
Times are UTC for when items were noted or added by The Tracking News.
| 1912 | Noted that JPL Sentry has updated its 2009 KK risk assessment - see above Grabbed MPEC 2009-K65 - Comet 126P/IRAS - see above |
| 1801 | Grabbed MPEC 2009-K64 - 2009 KM7 - see above |
| 1548 | Grabbed MPEC 2009-K63 - Comet C/2009 K4 (Gibbs) - see above |
| 1519 | Grabbed MPEC 2009-K62 - Comet C/2009 K3 (Beshore) - see above |
| 1319 | Noted that JPL Sentry has removed 2009 KD5 as an impact risk - see above Noted that NEODyS has updated its 2009 KK risk assessment - see above Grabbed MPEC 2009-K61 - Daily Orbit Update - see above |
| 0200 | Grabbed MPEC 2009-K60 - 2009 KC7 - see above |
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