On this day five years ago the Stardust spacecraft made a distant flyby of asteroid 5535 Annefrank, seen here in the two closest images which were made six seconds apart and serve as a good stereo pair. Relax your eyes and let them find focus behind the screen to bring the two dots and two images together into one. Credit: NASA/JPL with A/CC processing of unpublished imagery found archived in the NASA Planetary Data System.
Contents on 2 November '07
- IAU Minor Planet Center
- NEOCP Activity -- 27 listings: 17 new, 10 updated
- New MPECs -- five MPECs
- Observers -- 21 observing facilities
- Impact Risk Monitoring -- seven objects reported
- Chronology
Resources:
- Consolidated Risk Tables - CRT page
- Old & new CRT Archive
- Ephemerides for risk-rated objects
- Old News Archive & Small Objects Archive
Note: Due to travel, this Web site and its news pages will update less frequently and at sometimes irregular intervals during the rest of October and early November.
The latest news: framed access (best), 
RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup 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 this year 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 2 November '07
The MPC's NEO Confirmation Page has 27 listings: 17 new, 10 updated
When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seventeen new and ten updated listings. Of these, 24 were "one nighters." So far The Tracking News has counted a total of 32 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 2 November '07
Minor Planet Electronic Circulars
As of last check at 2354 UTC, there have been five MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-V05 time-stamped "06:11 UT" - Daily Orbit Update - see below
- MPEC 2007-V06 time-stamped "17:46 UT" - 2007 US65 - see below
- MPEC 2007-V07 time-stamped "17:50 UT" - 2007 UT65 - see below
- MPEC 2007-V08 time-stamped "17:53 UT" - 2007 VG - see below
- MPEC 2007-V09 time-stamped "17:56 UT" - 1999 UQ
MPEC 2007-V09 - "17:56 UT" - 1999 UQ
- J99U00Q 1999 UQ (borderline-small, H=21.8 ~148m) from LONEOS (Nov. 1.21-24p4), KLENOT (Nov. 1.82-83p5), Great Shefford Obs. (Nov. 1.91p2), Astronomical Research Obs. (ARO) (Nov. 2.07-08p3), and Jim Young via Table Mtn. Obs. (Nov. 2.16-18p4)
MPEC 2007-V08 - "17:53 UT" - 2007 VG
- K07V00G 2007 VG (risk-listed, i=49.3°, H=20.8 ~234m) was discovered at 0450 UT on 1 Nov. by the Mt. Lemmon Survey (MLS), which observed it at Nov. 1.20-22p4 and 1.30p4. The discovery was confirmed by Grasslands Obs. (Nov. 1.26p3), KLENOT (Nov. 1.83-84p9), Great Shefford Obs. (Nov. 1.86-87p3), Farra d'Isonzo Obs. (Nov. 1.93-95p2), Montcabre Obs. (Nov. 2.02p1), and Young/Table Mtn. (Nov. 2.18-20p4).
MPEC 2007-V07 - "17:50 UT" - 2007 UT65
- K07U65T 2007 UT65 (small asteroid, H=24.2 ~49m) was discovered at 0705 UT on 31 Oct. by the MLS, which observed it at Oct. 31.24-30p8, 31.36p3, Nov. 2.30-33p4, and 2.40-41p4. The discovery was confirmed by Great Shefford Obs. (Oct. 31.85-89p2).
MPEC 2007-V06 - "17:46 UT" - 2007 US65
- K07U65S 2007 US65 (Q=4.016 AU, H=20.0 ~339m) was discovered at 1119 UT on 30 Oct. by the MLS, which observed it at Oct. 30.36-40p4 at V=22.1, 30.47-48p4, and Nov. 2.30-33p4. The discovery was confirmed by Great Shefford Obs. (Oct. 30.91p1, 30.96p1 & Nov. 2.05-08p2), the Spacewatch 1.8m telescope (Nov. 1.22-23p3 & 2.45p2), ARO (Nov. 1.23-25p3), and KLENOT (Nov. 1.87p3).
<< DOU on 2 Nov. '07 >> MPEC 2007-V05 - "06:11 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K07U51S 2007 US51 (small asteroid, arc=1 day, H=27.2 ~12m) from Great Shefford Obs. (Oct. 31.91p2)
- K07U51R 2007 UR51 (arc=1 day, H=21.4 ~178m) from ARO (Nov. 1.19-20p3)
- K07U12N 2007 UN12 (small asteroid, arc=11 days, H=28.7 ~6m) from Spacewatch 1.8m (Nov. 1.27-28p3)
- K07U12L 2007 UL12 (q=0.385 AU, arc=7 days, H=20.6 ~257m) from Young/Table Mtn. (Nov. 1.46-48p4)
- K07U01Y 2007 UY1 (small asteroid, arc=15 days, H=22.8 ~93m) from Spacewatch 1.8m (Nov. 2.12-13p3)
- K07T24U 2007 TU24 (arc=22 days, H=20.1 ~323m) from Spacewatch 1.8m (Nov. 1.18-19p3 & 2.15p3)
- Observations of recently (no longer) risk-listed objects
- K07U00H 2007 UH (small asteroid, arc=21 days, H=22.1 ~129m) from Spacewatch 1.8m (Nov. 1.32-33p3)
- K07T66E 2007 TE66 (arc=20 days, H=21.3 ~186m) from Hibiscus Obs. (Nov. 1.50p1 & 1.55p1)
- K07T25A 2007 TA25 (arc=19 days, H=19.9 ~355m) from ARO (Oct. 30.07-09p3)
- K07T23B 2007 TB23 (i=38.3°, arc=22 days, H=18.6 ~645m) from MLS (Nov. 1.25-26p4) and Eschenberg Obs. (Nov. 1.84-85p7)
- K07T19H 2007 TH19 (arc=24 days, H=17.8 ~933m) from Spacewatch 1.8m (Nov. 1.44-45p3)
- Observations of small asteroids (H>22.0)
- K07U40K 2007 UK40 (arc=2 days, H=23.3 ~74m) from GiaGa Obs. (Oct. 31.92-98p3), Young/Table Mtn. (Nov. 1.32-33p4), Eschenberg Obs. (Nov. 1.79-80p7), and KLENOT (Nov. 1.88p5)
- K07U02C 2007 UC2 (arc=15 days, H=23.0 ~85m) from KLENOT (Nov. 1.90-91p5)
- K07U00R 2007 UR (Q=4.507 AU, arc=17 days, H=24.2 ~49m) from Spacewatch 1.8m (Nov. 1.35-36p3 & 2.17-18p2)
- K07S01S 2007 SS1 (arc=43 days, H=23.6 ~65m) from the Spacewatch 0.9m telescope (Nov. 1.32-35p3)
- K07R17R 2007 RR17 (arc=49 days, H=23.6 ~65m) from Spacewatch 0.9m (Nov. 1.16-20p3)
- K07R01E 2007 RE1 (Q=4.269 AU, arc=57 days, H=22.1 ~129m) from ARO (Oct. 29.38-40p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K07U12S 2007 US12 (arc=3 days, H=21.9 ~141m) from MLS (Nov. 1.22-24p4) and KLENOT (Nov. 1.90p4)
- K07T24Q 2007 TQ24 (q=0.365 AU, arc=22 days, H=22.0 ~135m) from Spacewatch 1.8m (Nov. 1.19-20p3 & 2.14p2)
- Observations of other objects
- K07U06S 2007 US6 (arc=18 days, H=18.3 ~741m) from GiaGa Obs. (Nov. 1.00p1 & 1.05p1), LINEAR (Nov. 1.38-42p4), and Eschenberg Obs. (Nov. 1.80-81p7)
- K07U03R 2007 UR3 (arc=23 days, H=21.2 ~195m) from Spacewatch 1.8m (Nov. 1.34p3)
- K07U02A 2007 UA2 (arc=25 days, H=21.0 ~214m) from Spacewatch 0.9m (Nov. 1.08-13p3) and MLS (Nov. 1.20-22p4)
- K07T74O 2007 TO74 (arc=17 days, H=19.7 ~389m) from ARO (Nov. 1.26-28p3)
- K07T68S 2007 TS68 (arc=18 days, H=19.5 ~426m) from ARO (Oct. 30.21-22p3)
- K07T15K 2007 TK15 (arc=24 days, H=21.2 ~195m) from Spacewatch 1.8m (Nov. 1.43-44p3)
- K07T15G 2007 TG15 (arc=24 days, H=19.6 ~407m) from the Catalina Sky Survey (CSS) (Nov. 1.21-23p4) and Petit Jean Mtn. South Obs. (PJMSO) (Nov. 1.27p1)
- K07RE7T 2007 RT147 (arc=51 days, H=18.1 ~812m) from LONEOS (Nov. 1.15-19p4)
- K07R19X 2007 RX19 (i=40.4°, arc=46 days, H=18.5 ~676m) from ARO (Oct. 30.00-01p3)
- K07R17U 2007 RU17 (q=0.356 AU, arc=49 days, H=18.2 ~776m) from KLENOT (Nov. 1.77p5)
- K07R01D 2007 RD1 (arc=60 days, H=21.6 ~162m) from ARO (Nov. 1.23-24p3)
- K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Dresden Obs. (Oct. 31.94-95p4) and PJMSO (Nov. 1.26-27p6)
- K07M20T 2007 MT20 (arc=130 days, H=18.7 ~616m) from Spacewatch 1.8m (Nov. 1.48-49p3)
- K07L19Q 2007 LQ19 (Q=4.247 AU, arc=139 days, H=17.5 ~1.07 km) from ARO (Oct. 30.29-30p3)
- K06UL6S 2006 US216 (IEO, q=0.278 AU, Q=0.995 AU, arc=2 opp, H=19.9 ~355m) from Spacewatch 1.8m (Nov. 1.47-48p3)
- K06S78Q 2006 SQ78 (i=36.1°, arc=2 opp, H=18.8 ~589m) from Spacewatch 1.8m (Nov. 1.09p2 & 2.07-08p3)
- K05U00B 2005 UB (arc=3 opp, H=16.6 ~1.62 km) from Spacewatch 1.8m (Nov. 1.51-52p2)
- K01U16Y 2001 UY16 (arc=3 opp, H=19.1 ~513m) from LONEOS (Nov. 1.14-18p4)
- J97G28H 1997 GH28 (arc=5 opp, H=17.9 ~891m) from MLS (Nov. 1.07-09p4)
- J97E30T 1997 ET30 (arc=8 opp, H=16.9 ~1.41 km) from Spacewatch 0.9m (Nov. 1.21-24p3)
- G4120 164120 2003 YK from Spacewatch 0.9m (Nov. 1.49p1)
- G2273 162273 1999 VL12 from Spacewatch 0.9m (Nov. 1.21-24p3) and Naef Obs. (Nov. 1.94-96p2)
- F3591 153591 2001 SN263 from Naef Obs. (Nov. 1.88-90p2)
- 18736 18736 1998 NU from LINEAR (Nov. 1.44-49p3)
- 08566 8566 1996 EN from Montana Blanca Obs. (Nov. 1.80p1)
- 02212 2212 Hephaistos (1978 SB) from MLS (Nov. 1.22-24p3) and LINEAR (Nov. 1.39-42p4)
- 01036 1036 Ganymed (1924 TD) from Atlante Obs. (Nov. 1.08p3)
- 00433 433 Eros (1898 DQ) from LINEAR (Nov. 1.08-13p6)
Observers on 2 November '07
A total of 21 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H55 | Astronomical Research Obs. (ARO) in Illinois, 10 in MPECs 2007-V05, 2007-V06 & 2007-V09 -- 2007 US65, 2007 UR51, 2007 TS68, 2007 TO74, 2007 TA25, 2007 RX19, 2007 RE1, 2007 RD1, 2007 LQ19, 1999 UQ |
| J51 | Atlante Obs. in the Canary Islands, 1 in MPEC 2007-V05 -- 1036 |
| 703 | Catalina Sky Survey in Arizona, 1 in MPEC 2007-V05 -- 2007 TG15 |
| 639 | Dresden Obs. in Germany, 1 in MPEC 2007-V05 -- 2007 PU11 |
| 151 | Eschenberg Obs. in Switzerland, 3 in MPEC 2007-V05 -- 2007 US6, 2007 UK40, 2007 TB23 |
| 595 | Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-V08 -- 2007 VG |
| 203 | GiaGa Obs. in Italy, 2 in MPEC 2007-V05 -- 2007 US6, 2007 UK40 |
| 651 | Grasslands Obs. in Arizona, 1 in MPEC 2007-V08 -- 2007 VG |
| J95 | Great Shefford Obs. in England, 5 in MPECs 2007-V05, 2007-V06, 2007-V07, 2007-V08 & 2007-V09 -- 2007 VG, 2007 UT65, 2007 US65, 2007 US51, 1999 UQ |
| F84 | Hibiscus Obs. in Tahiti, 1 in MPEC 2007-V05 -- 2007 TE66 |
| 246 | KLENOT in the Czech Republic, 7 in MPECs 2007-V05, 2007-V06, 2007-V08 & 2007-V09 -- 2007 VG, 2007 US65, 2007 US12, 2007 UK40, 2007 UC2, 2007 RU17, 1999 UQ |
| 704 | LINEAR in New Mexico, 4 in MPEC 2007-V05 -- 2007 US6, 18736, 2212, 433 |
| 699 | LONEOS in Arizona, 3 in MPECs 2007-V05 & 2007-V09 -- 2007 RT147, 2001 UY16, 1999 UQ |
| J46 | Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2007-V05 -- 8566 |
| 213 | Montcabre Obs. in Spain, 1 in MPEC 2007-V08 -- 2007 VG |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2007-V05, 2007-V06, 2007-V07 & 2007-V08 -- 2007 VG, 2007 UT65, 2007 US65, 2007 US12, 2007 UA2, 2007 TB23, 1997 GH28, 2212 |
| A13 | Naef Obs. in Switzerland, 2 in MPEC 2007-V05 -- 162273, 153591 |
| H45 | Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2007-V05 -- 2007 TG15, 2007 PU11 |
| 691 | Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2007-V05 -- 2007 UA2, 2007 SS1, 2007 RR17, 1997 ET30, 164120, 162273 |
| 291 | Spacewatch 1.8m telescope in Arizona, 14 in MPECs 2007-V05 & 2007-V06 -- 2007 UY1, 2007 US65, 2007 UR3, 2007 UR, 2007 UN12, 2007 UH, 2007 TU24, 2007 TQ24, 2007 TK15, 2007 TH19, 2007 MT20, 2006 US216, 2006 SQ78, 2005 UB |
| 6735 | Jim Young via Table Mtn. Obs. in southern California, 4 in MPECs 2007-V05, 2007-V08 & 2007-V09 -- 2007 VG, 2007 UL12, 2007 UK40, 1999 UQ |
Impact Risk Monitoring on 2 November '07
| 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 |
| 2007 VG | JPL Sentry | 2354 | 2010-2105 | 60 | 4.3e-08 | -4.18 | -4.48 | 0 | JPL: "Analysis based on 30 observations spanning .99564 days (2007-Nov-01.20193 to 2007-Nov-02.19757)." Diameter approximately 0.240 km. from mean, weighted H=20.7. |
| 2007 US51 | JPL Sentry | 1412 | 2082-2103 | 5 | 4.6e-06 | -6.53 | -6.85 | 0 | JPL: "Analysis based on 21 observations spanning 1.0238 days (2007-Oct-31.38411 to 2007-Nov-01.40792)." Diameter approximately 0.012 km. from mean, weighted H=27.2. |
| NEODyS | 1309 | 2079-2082 | 4 | 1.99e-06 | -6.84 | -6.89 | 0 | NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2007/10/31.385 to 2007/11/01.409." | |
| 2007 UR51 | JPL Sentry | 1309 | 2070-2106 | 17 | 1.0e-08 | -6.07 | -6.60 | 0 | JPL: "Analysis based on 21 observations spanning 1.0361 days (2007-Oct-31.19738 to 2007-Nov-01.23351)." Diameter approximately 0.185 km. from mean, weighted H=21.3. |
| NEODyS | 1309 | 2076-2088 | 3 | 1.07e-09 | -6.97 | -7.12 | 0 | NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2007/10/31.198 to 2007/11/01.234." | |
| 2007 UN12 | NEODyS | 1607 | 2069-2090 | 25 | 6.31e-05 | -6.42 | -7.17 | 0 | NEODyS: "Based on 78 optical observations (of which 0 are rejected as outliers) from 2007/10/21.373 to 2007/11/01.277." |
| JPL Sentry | 1309 | 2075-2107 | 26 | 2.1e-04 | -5.98 | -6.86 | 0 | JPL: "Analysis based on 78 observations spanning 10.904 days (2007-Oct-21.37247 to 2007-Nov-01.27627)." Diameter approximately 0.006 km. from mean, weighted H=28.8. | |
| 2007 UL12 | JPL Sentry | 1309 | R E M O V E D | JPL: Risk listing removed at 1012 UTC. | |||||
| 2007 UY1 | JPL Sentry | 1309 | 2097-2100 | 2 | 1.3e-07 | -6.28 | -6.49 | 0 | JPL: "Analysis based on 49 observations spanning 14.985 days (2007-Oct-18.14415 to 2007-Nov-02.12913)." Diameter approximately 0.093 km. from mean, weighted H=22.8. |
| 2007 TU24 | JPL Sentry | 1412 | 2098-2104 | 2 | 3.4e-07 | -4.51 | -4.51 | 0 | JPL: "Analysis based on 74 observations spanning 21.886 days (2007-Oct-11.26838 to 2007-Nov-02.15405)." Diameter approximately 0.320 km. from mean, weighted H=20.1. |
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 2 November '07
Times are UTC for when the items were noted or added by The Tracking News.
| 2354 | Noted that JPL Sentry has posted 2007 VG as an impact risk - see above |
| 1807 | Grabbed MPEC 2007-V08 - 2007 VG - see above |
| 1806 | Grabbed MPEC 2007-V06 - 2007 US65 - see above Grabbed MPEC 2007-V07 - 2007 UT65 - see above Grabbed MPEC 2007-V09 - 1999 UQ - see above |
| 1607 | Noted that NEODyS has updated its 2007 UN12 risk assessment - see above |
| 1412 | Noted that JPL Sentry has updated its 2007 TU24 risk assessment - see above Noted that JPL Sentry has updated its 2007 US51 risk assessment - see above |
| 1309 | Noted that JPL Sentry has removed 2007 UL12 as an impact risk - see above Noted that JPL Sentry has updated its 2007 UN12 risk assessment - see above Noted that JPL Sentry has updated its 2007 UR51 risk assessment - see above Noted that NEODyS has posted 2007 UR51 as an impact risk - see above Noted that NEODyS has posted 2007 US51 as an impact risk - see above Noted that JPL Sentry has updated its 2007 UY1 risk assessment - see above Grabbed MPEC 2007-V05 - Daily Orbit Update - see above |
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