Contents on 18 January '09
- IAU Minor Planet Center
- NEOCP Activity -- 18 listings: 4 new, 14 updated
- New MPECs -- seven MPECs
- Observers -- 24 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 18 January '09
The MPC's NEO Confirmation Page has 18 listings: 4 new, 14 updated
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four new and fourteen updated listings. Of these, seven were "one nighters." So far The Tracking News has counted a total of 27 objects listed on the NEOCP at some point today.
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 18 January '09
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been seven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2009-B12 time-stamped "01:45 UT" - 2009 BB - see below
- MPEC 2009-B13 time-stamped "01:48 UT" - 2009 BC - see below
- MPEC 2009-B14 time-stamped "01:51 UT" - 2009 BD - see below
- MPEC 2009-B15 time-stamped "01:54 UT" - 2009 BE - see below
- MPEC 2009-B16 time-stamped "01:57 UT" - 2009 BF - see below
- MPEC 2009-B17 time-stamped "02:00 UT" - 2009 BG - see below
- MPEC 2009-B18 time-stamped "07:05 UT" - Daily Orbit Update
<< DOU on 18 Jan. '09 >> MPEC 2009-B18 - "07:05 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K09B00E 2009 BE (small asteroid, arc=2 days, H=26.0 ~21m) from LINEAR (Jan. 17.28-33p4)
- K09B00D 2009 BD (small asteroid, arc=2 days, H=28.8 ~6m) from LINEAR (Jan. 17.27-32p5), Calar Alto Obs. (Jan. 18.01p3), and Saint-Barthelemy Obs. (Jan. 18.03-05p4)
- K08Y03C 2008 YC3 (small asteroid, arc=27 days, H=25.4 ~28m) from Magdalena Ridge Obs. (MRO) (Jan. 18.10-11p2 at R=22.0-22.5)
- Observations of recently (no longer) risk-listed objects
- K08Y29E 2008 YE29 (Q=4.540 AU, arc=18 days, H=20.2 ~309m) from Walnut Creek Obs. (Jan. 17.18-19p3)
- K08Y03J 2008 YJ3 (arc=26 days, H=20.2 ~309m) from the Spacewatch 1.8m telescope (Jan. 17.27-28p2)
- Observations of small asteroids (H>22.0)
- K09B00G 2009 BG (arc=2 days, H=25.5 ~27m) from LINEAR (Jan. 17.33-45p9)
- Observations of other objects
- K09B00B 2009 BB (q=0.372 AU, Q=4.446 AU, arc=2 days, H=18.1 ~812m) from LINEAR (Jan. 17.08-13p5), Sandlot Obs. (Jan. 18.06-08p2), and Desert Moon Obs. (Jan. 18.17-19p3)
- K09A16H 2009 AH16 (arc=2 days, H=17.7 ~977m) from Ernesto Guido via RAS Obs. Mayhill (Jan. 17.43-46p2), LINEAR (Jan. 17.46-51p5), and Desert Moon Obs. (Jan. 17.53-55p4)
- K09A16G 2009 AG16 (arc=2 days, H=21.2 ~195m) from Desert Moon Obs. (Jan. 17.44-47p3)
- K09A16F 2009 AF16 (arc=2 days, H=21.0 ~214m) from LINEAR (Jan. 17.20-26p5) and Desert Moon Obs. (Jan. 17.36-37p5)
- K09A16E 2009 AE16 (i=46.3°, arc=2 days, H=18.5 ~676m) from LINEAR (Jan. 17.46-51p5) and Hamamatsu-Yuto Obs. (Jan. 17.71p1 & 17.78-81p4)
- K09A16D 2009 AD16 (Q=4.212 AU, arc=3 days, H=20.4 ~282m) from LINEAR (Jan. 17.27-32p5), Hamamatsu-Yuto Obs. (Jan. 17.54-58p10), and Paus Obs. (Jan. 17.87-88p3)
- K09A15L 2009 AL15 (arc=10 days, H=21.3 ~186m) from Spacewatch 1.8m (Jan. 17.47-50p3)
- K09A00M 2009 AM (Q=4.766 AU, arc=16 days, H=21.4 ~178m) from LINEAR (Jan. 17.27-33p5)
- K08X03E 2008 XE3 (Q=4.045 AU, arc=2 opp, H=16.3 ~1.86 km) from Walnut Creek Obs. (Jan. 17.25-26p2)
- K08V04U 2008 VU4 (Q=4.210 AU, arc=71 days, H=17.6 ~1.02 km) from Desert Moon Obs. (Jan. 17.24-33p3)
- K08U00C 2008 UC (arc=90 days, H=18.9 ~562m) from LINEAR (Jan. 17.14-19p4) and the Catalina Sky Survey (CSS) (Jan. 17.20-23p3)
- K08SO5X 2008 SX245 (arc=2 opp, H=17.8 ~933m) from Desert Moon Obs. (Jan. 17.16-19p3)
- K08S01Q 2008 SQ1 (Q=4.682 AU, arc=2 opp, H=18.5 ~676m) from LINEAR (Jan. 17.21-26p5)
- K08R26T 2008 RT26 (arc=131 days, H=19.4 ~446m) from Astronomical Research Obs. (ARO) (Jan. 16.28-29p4)
- K08Q03T 2008 QT3 (arc=146 days, H=18.8 ~589m) from Hamamatsu-Yuto Obs. (Jan. 16.39-47p9 & 17.50-54p8)
- K08M05B 2008 MB5 (arc=201 days, H=19.2 ~490m) from LINEAR (Jan. 17.33-38p4)
- K08M01N 2008 MN1 (i=37.2°, arc=201 days, H=20.1 ~323m) from ARO (Jan. 17.10-11p3)
- K08E32A 2008 EA32 (IEO, Q=0.804 AU, arc=2 opp, H=16.4 ~1.78 km) from Petit Jean Mtn. South Obs. (PJMSO) (Jan. 17.06-07p6)
- K08E05V 2008 EV5 (arc=2 opp, H=20.0 ~339m) from Hamamatsu-Yuto Obs. (Jan. 15.48-53p5, 16.50-54p13 & 17.59p2)
- K06F51D 2006 FD51 (arc=2 opp, H=18.6 ~645m) from Spacewatch 1.8m (Jan. 17.51-52p3 at V=22.1-4)
- K06A02S 2006 AS2 (arc=4 opp, H=20.3 ~295m) from LINEAR (Jan. 17.28-33p5)
- K05Y00S 2005 YS (q=0.320 AU, arc=2 opp, H=19.7 ~389m) from CSS (Jan. 17.14-16p4)
- K05W55S 2005 WS55 (arc=4 opp, H=16.0 ~2.14 km, q=1.108 AU) from LINEAR (Jan. 17.08-13p5)
- K05T51Z 2005 TZ51 (arc=3 opp, H=17.9 ~891m) from LINEAR (Jan. 17.15-19p4)
- K04K00T 2004 KT (i=43.7°, arc=2 opp, H=18.0 ~851m) from Desert Moon Obs. (Jan. 17.08-13p3)
- K02V94Y 2002 VY94 (Q=5.375 AU, arc=2 opp, H=16.8 ~1.48 km) from LINEAR (Jan. 17.14-19p5)
- K00A06E 2000 AE6 (Q=4.220 AU, arc=3 opp, H=17.5 ~1.07 km) from LINEAR (Jan. 17.34-39p5)
- J99A10Q 1999 AQ10 (arc=4 opp, H=20.3 ~295m) from ARO (Jan. 16.42-43p4) and LINEAR (Jan. 17.38-43p5)
- K0840 200840 2001 XN254 from LINEAR (Jan. 17.15-20p3)
- K0754 200754 2001 WA25 from LINEAR (Jan. 17.22-25p3)
- J8752 198752 2005 EA60 from the Spacewatch 0.9m telescope (Jan. 17.45-49p3)
- G2361 162361 2000 AF6 from LINEAR (Jan. 17.20-25p5)
- E2348 142348 2002 RX211 from Ragdon Obs. (Jan. 2.00-04p3)
- E1765 141765 2002 MP3 from Sierra Stars Obs. (Jan. 18.07p1)
- E1052 141052 2001 XR1 from LINEAR (Jan. 17.27-32p5) and Mirasteilas Obs. (Jan. 18.03-05p3)
- D7925 137925 2000 BJ19 from LINEAR (Jan. 17.34-39p5)
- 52768 52768 1998 OR2 from LINEAR (Jan. 17.33-38p5)
- 36236 36236 1999 VV from LINEAR (Jan. 17.08-13p5)
- 04179 4179 Toutatis (1989 AC) from LINEAR (Jan. 17.28-33p5)
- 02368 2368 Beltrovata (1977 RA) from LINEAR (Jan. 17.26-31p5)
MPEC 2009-B17 - "02:00 UT" - 2009 BG
- K09B00G 2009 BG (small asteroid, Earth MOID=3.2 LD, H=25.6 ~26m) was discovered at 0934 UT on 16 Jan. by LINEAR, which observed it at Jan. 16.40-44p4. The discovery was confirmed by Sandlot Obs. (Jan. 17.40p4), MRO (Jan. 17.45-49p6), and Calar Alto Obs. (Jan. 17.94p3). This object is now within ten lunar distances (LD) of Earth, reaching 5.1 LD on 15 Jan.
MPEC 2009-B16 - "01:57 UT" - 2009 BF
- K09B00F 2009 BF (i=52.5°, H=18.5 ~676m) was discovered at 0840 UT on 16 Jan. by the Mt. Lemmon Survey (MLS), which observed it at Jan. 16.36-42p7 and 17.34p4. The discovery was confirmed by Calar Alto Obs. (Jan. 17.07p2 & 17.97p2) and MRO (Jan. 17.31-34p5).
MPEC 2009-B15 - "01:54 UT" - 2009 BE
- K09B00E 2009 BE (risk-listed, Earth MOID=0.2 LD, H=26.0 ~21m) was discovered at 0839 UT on 16 Jan. by MLS, which observed it at Jan. 16.36-39p8 and 17.34p4. The discovery was confirmed by Calar Alto Obs. (Jan. 16.95-96p3 & 18.00-01p3), MRO (Jan. 17.36-38p5), and Saint-Barthelemy Obs. (Jan. 17.93-95p5). This object will be coming within ten lunar distances (LD) of Earth, reaching 2.2 LD on 23 Jan.
MPEC 2009-B14 - "01:51 UT" - 2009 BD
- K09B00D 2009 BD (risk-listed, Earth MOID=0.8 LD, H=28.8 ~6m) was discovered at 0638 UT on 16 Jan. by MLS, which observed it at Jan. 16.28-30p4, 16.39p4, and 17.32p4. The discovery was confirmed by ARO (Jan. 16.34p6), Sabino Canyon Obs. (Jan. 16.36p3), the Siding Spring Survey (SSS) (Jan. 16.65p3), Calar Alto Obs. (Jan. 16.92p3), Farra d'Isonzo Obs. (Jan. 16.92-94p3), MRO (Jan. 17.15-21p5 & 17.42-43p4), and Schiaparelli Obs. (Jan. 17.87-88p5). This object is now within ten lunar distances (LD) of Earth, reaching 1.8 LD on 24 Jan.
MPEC 2009-B13 - "01:48 UT" - 2009 BC
- K09B00C 2009 BC (small asteroid, H=22.8 ~93m) was discovered at 0547 UT on 16 Jan. by MLS, which observed it at Jan. 16.24-26p4, 16.39p4, and 17.31-34p6. The discovery was confirmed by Calar Alto Obs. (Jan. 16.96-97p3 & 18.01-02p3), ARO (Jan. 17.14-16p3), and MRO (Jan. 17.27-29p4).
MPEC 2009-B12 - "01:45 UT" - 2009 BB
- K09B00B 2009 BB (q=0.376 AU, Q=4.420 AU, H=18.1 ~812m) was discovered at 0150 UT on 16 Jan. by LINEAR, which observed it at Jan. 16.08-13p4. The discovery was confirmed by Calar Alto Obs. (Jan. 17.02p3 & 17.93p3), Alter Satzberg Obs. (Jan. 17.03-04p2), ARO (Jan. 17.06-07p4), Walnut Creek Obs. (Jan. 17.16-17p4), and Schiaparelli Obs. (Jan. 17.83-84p3).
Observers on 18 January '09
A total of 24 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| B03 | Alter Satzberg Obs. in Austria, 1 in MPEC 2009-B12 -- 2009 BB |
| H55 | Astronomical Research Obs. (ARO) in Illinois, 6 in MPECs 2009-B12, 2009-B13, 2009-B14 & 2009-B18 -- 2009 BD, 2009 BC, 2009 BB, 2008 RT26, 2008 MN1, 1999 AQ10 |
| 493 | Calar Alto Obs. in Spain, 6 in MPECs 2009-B12, 2009-B13, 2009-B14, 2009-B15, 2009-B16, 2009-B17 & 2009-B18 -- 2009 BG, 2009 BF, 2009 BE, 2009 BD, 2009 BC, 2009 BB |
| 703 | Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2009-B18 -- 2008 UC, 2005 YS |
| 448 | Desert Moon Obs. in New Mexico, 7 in MPEC 2009-B18 -- 2009 BB, 2009 AH16, 2009 AG16, 2009 AF16, 2008 VU4, 2008 SX245, 2004 KT |
| 595 | Farra d'Isonzo Obs. in Italy, 1 in MPEC 2009-B14 -- 2009 BD |
| 379 | Hamamatsu-Yuto Obs. in Japan, 4 in MPEC 2009-B18 -- 2009 AE16, 2009 AD16, 2008 QT3, 2008 EV5 |
| 704 | LINEAR in New Mexico, 27 in MPECs 2009-B12, 2009-B17 & 2009-B18 -- 2009 BG, 2009 BE, 2009 BD, 2009 BB, 2009 AM, 2009 AH16, 2009 AF16, 2009 AE16, 2009 AD16, 2008 UC, 2008 SQ1, 2008 MB5, 2006 AS2, 2005 WS55, 2005 TZ51, 2002 VY94, 2000 AE6, 1999 AQ10, 52768, 36236, 200840, 200754, 162361, 141052, 137925, 4179, 2368 |
| H01 | Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2009-B13, 2009-B14, 2009-B15, 2009-B16, 2009-B17 & 2009-B18 -- 2009 BG, 2009 BF, 2009 BE, 2009 BD, 2009 BC, 2008 YC3 |
| B67 | Mirasteilas Obs. in Switzerland, 1 in MPEC 2009-B18 -- 141052 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2009-B13, 2009-B14, 2009-B15 & 2009-B16 -- 2009 BF, 2009 BE, 2009 BD, 2009 BC |
| B49 | Paus Obs. in Spain, 1 in MPEC 2009-B18 -- 2009 AD16 |
| H45 | Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2009-B18 -- 2008 EA32 |
| H06% | Ernesto Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2009-B18 -- 2009 AH16 |
| J17 | Ragdon Obs. in England, 1 in MPEC 2009-B18 -- 142348 |
| 854 | Sabino Canyon Obs. in Arizona, 1 in MPEC 2009-B14 -- 2009 BD |
| B04 | Saint-Barthelemy Obs. in Italy, 2 in MPECs 2009-B15 & 2009-B18 -- 2009 BE, 2009 BD |
| H36 | Sandlot Obs. in Kansas, 2 in MPECs 2009-B17 & 2009-B18 -- 2009 BG, 2009 BB |
| 204 | Schiaparelli Obs. in Italy, 2 in MPECs 2009-B12 & 2009-B14 -- 2009 BD, 2009 BB |
| E12 | Siding Spring Survey in New South Wales, 1 in MPEC 2009-B14 -- 2009 BD |
| G68 | Sierra Stars Obs. in northern California, 1 in MPEC 2009-B18 -- 141765 |
| 691 | Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2009-B18 -- 198752 |
| 291 | Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2009-B18 -- 2009 AL15, 2008 YJ3, 2006 FD51 |
| G56 | Walnut Creek Obs. in northern California, 3 in MPECs 2009-B12 & 2009-B18 -- 2009 BB, 2008 YE29, 2008 XE3 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 18 January '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 BE | JPL Sentry | 1557 | 2048-2107 | 26 | 1.8e-04 | -4.38 | -4.66 | 0 | JPL #2 for the day: "Analysis based on 32 observations spanning 1.6458 days (2009-Jan-16.36105 to 2009-Jan-18.00684)." Diameter approximately 0.022 km. from mean, weighted H=26.0. |
| NEODyS | 1557 | 2047-2086 | 18 | 1.63e-04 | -4.43 | -4.69 | 0 | NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2009/01/16.362 to 2009/01/18.008." | |
| 2009 BD | JPL Sentry | 1557 | 2023-2070 | 22 | 2.6e-04 | -5.65 | -6.08 | 0 | JPL #2 for the day: "Analysis based on 56 observations spanning 1.7703 days (2009-Jan-16.27641 to 2009-Jan-18.04668)." Diameter approximately 0.006 km. from mean, weighted H=28.7. |
| NEODyS | 1557 | 2053-2090 | 67 | 3.97e-04 | -5.50 | -6.09 | 0 | NEODyS: "Based on 56 optical observations (of which 0 are rejected as outliers) from 2009/01/16.277 to 2009/01/18.047." | |
| 2008 YC3 | JPL Sentry | 1557 | 2088-2106 | 8 | 8.4e-07 | -6.67 | -6.85 | 0 | JPL: "Analysis based on 32 observations spanning 26.862 days (2008-Dec-22.25277 to 2009-Jan-18.11446)." Diameter approximately 0.028 km. from mean, weighted H=25.4. |
| NEODyS | 1557 | R E M O V E D | - | ||||||
| 2008 TS10 | NEODyS | 1733 | 2068-2089 | 6 | 9.12e-06 | -7.22 | -7.64 | 0 | NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2008/10/08.362 to 2008/10/22.499." |
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 18 January '09
Times are UTC for when items were noted or added by The Tracking News.
| 1733 | Noted that NEODyS has updated its 2008 TS10 risk assessment - see above |
| 1557 | Noted that JPL Sentry has updated its 2008 YC3 risk assessment - see above Noted that NEODyS has removed 2008 YC3 as an impact risk - see above Noted that JPL Sentry has updated its 2009 BD risk assessment - see above Noted that NEODyS has posted 2009 BD as an impact risk - see above Noted that JPL Sentry has updated its 2009 BE risk assessment - see above Noted that NEODyS has posted 2009 BE as an impact risk - see above Grabbed MPEC 2009-B18 - Daily Orbit Update - see above |
| 0428 | Noted that JPL Sentry has posted 2009 BD as an impact risk - see above |
| 0358 | Noted that JPL Sentry has posted 2009 BE as an impact risk - see above |
| 0228 | Grabbed MPEC 2009-B17 - 2009 BG - see above |
| 0159 | Grabbed MPEC 2009-B12 - 2009 BB - see above Grabbed MPEC 2009-B13 - 2009 BC - see above Grabbed MPEC 2009-B14 - 2009 BD - see above Grabbed MPEC 2009-B15 - 2009 BE - see above Grabbed MPEC 2009-B16 - 2009 BF - see above |
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