Comet 17P/Holmes imaged on November 1st by astrophotographer Alan Dyer in Alberta, Canada. For more about what's been going on with this comet, which exploded on October 23rd and has become naked-eye visible, see ESA's news release and images posted by NASA from Dyer and the Hubble Space Telescope.
Contents on 16 November '07
- IAU Minor Planet Center
- NEOCP Activity -- 16 listings: 7 new, 9 updated
- New MPECs -- ten MPECs
- Observers -- fourteen observing facilities
- Impact Risk Monitoring -- eight objects reported
- Chronology
Resources:
- Consolidated Risk Tables - CRT page
- Earth's Busy Neighborhood Traffic Report
- Old & new CRT Archive
- Ephemerides for risk-rated and nearby objects
- Old News Archive & Small Objects Archive
Editor's note: On November 14th we launched an additional semi-automated news page, the Traffic Report for Earth's Busy Neighborhood. (It is "automated" in that, like with this page and the CRT, all the data is collected and published by program scripts without human intervention, but, to be exact, it is "semi-automated" since these activities don't yet run unattended.)
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 16 November '07
The MPC's NEO Confirmation Page has 16 listings: 7 new, 9 updated
When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had seven new and nine updated listings. Of these, nine were "one nighters." So far The Tracking News has counted a total of 28 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 16 November '07
Minor Planet Electronic Circulars
As of last check at 2354 UTC, there have been ten MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-W01 time-stamped "07:13 UT" - Daily Orbit Update - see below
- MPEC 2007-W02 time-stamped "14:49 UT" - 2007 VB191 - see below
- MPEC 2007-W03 time-stamped "14:54 UT" - 2007 VC191 - see below
- MPEC 2007-W04 time-stamped "14:58 UT" - 2007 VD191 - see below
- MPEC 2007-W05 time-stamped "15:02 UT" - 2007 VE191 - see below
- MPEC 2007-W06 time-stamped "15:06 UT" - 2007 VF191 - see below
- MPEC 2007-W07 time-stamped "15:08 UT" - 2007 WA - see below
- MPEC 2007-W08 time-stamped "15:11 UT" - 2007 WB - see below
- MPEC 2007-W09 time-stamped "15:16 UT" - 2007 WC - see below
- MPEC 2007-W10 time-stamped "23:42 UT" - 2006 JX
MPEC 2007-W10 - "23:42 UT" - 2006 JX
- K06J00X 2006 JX (H=19.9 ~355m) from Astronomical Research Obs. (ARO) (Nov. 10.31-34p3 at V=22.1 & 16.31-33p3)
MPEC 2007-W09 - "15:16 UT" - 2007 WC
- K07W00C 2007 WC (small asteroid, H=25.9 ~22m) was discovered at 0815 UT on 16 Nov. by the Mt. Lemmon Survey (MLS), which observed it at Nov. 16.34-35p4 and 16.41-44p8.
MPEC 2007-W08 - "15:11 UT" - 2007 WB
- K07W00B 2007 WB (H=20.9 ~224m) was discovered at 0724 UT on 16 Nov. by the Catalina Sky Survey (CSS), which observed it at Nov. 16.31-32p3 and 16.40p4. The discovery was confirmed by MLS (Nov. 16.41-44p8).
MPEC 2007-W07 - "15:08 UT" - 2007 WA
- K07W00A 2007 WA (risk-listed, Earth MOID=0.9 LD, H=24.6 ~41m) was discovered at 0723 UT on 16 Nov. by the CSS, which observed it at Nov. 16.31-32p3 and 16.39-43p7. The discovery was confirmed by MLS (Nov. 16.34-35p6 & 16.45p4) and Cordell-Lorenz Obs. (Nov. 16.39-41p6). This object will be coming within ten lunar distances (LD) of Earth, reaching 9.6 LD on 23 Nov.
MPEC 2007-W06 - "15:06 UT" - 2007 VF191
- K07VJ1F 2007 VF191 (small asteroid, H=22.2 ~123m) was discovered at 0702 UT on 15 Nov. by the CSS, which observed it at Nov. 15.29-32p4 and 15.50-51p4. The discovery was confirmed by MLS (Nov. 16.34-35p4).
MPEC 2007-W05 - "15:02 UT" - 2007 VE191
- K07VJ1E 2007 VE191 (risk-listed, Earth MOID=0.4 LD, H=23.6 ~65m) was discovered at 0623 UT on 15 Nov. by the MLS, which observed it at Nov. 15.27-28p4, 15.33-35p4, and 16.15-16p8. The discovery was confirmed by Great Shefford Obs. (Nov. 16.02-03p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 5.3 LD on 29 Nov.
MPEC 2007-W04 - "14:58 UT" - 2007 VD191
- K07VJ1D 2007 VD191 (small asteroid, Earth MOID=7.4 LD, H=24.6 ~41m) was discovered at 0845 UT on 14 Nov. by the MLS, which observed it at Nov. 14.37-38p4, 14.43p4, and 16.44p4 at V=22.2.
MPEC 2007-W03 - "14:54 UT" - 2007 VC191
- K07VJ1C 2007 VC191 (risk-listed, H=20.8 ~234m) was discovered at 0729 UT on 14 Nov. by the MLS, which observed it at Nov. 14.31-36p8 at V=22.2, 15.24-26p4, and 15.33-35p3.
MPEC 2007-W02 - "14:49 UT" - 2007 VB191
- K07VJ1B 2007 VB191 (small asteroid, Earth MOID=3.5 LD, H=25.5 ~27m) was discovered at 0622 UT on 14 Nov. by LINEAR, which observed it at Nov. 14.27-30p4 and 15.26-31p4. The discovery was confirmed by Cordell-Lorenz Obs. (Nov. 16.31-35p3). This object will be coming within ten lunar distances (LD) of Earth, reaching 8.6 LD on 24 Nov.
<< DOU on 16 Nov. '07 >> MPEC 2007-W01 - "07:13 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K07VI4K 2007 VK184 (almost small, arc=4 days, H=22.0 ~135m) from Greiner Research Obs. (Nov. 16.05-06p4)
- K07VI4D 2007 VD184 (small asteroid, arc=4 days, H=23.2 ~78m) from the Spacewatch 1.8m telescope (Nov. 15.08-09p3)
- K07U12N 2007 UN12 (small asteroid, arc=25 days, H=28.7 ~6m) from MLS (Nov. 15.24-26p3 at V=22.5)
- Observations of recently (no longer) risk-listed objects
- K07V12D 2007 VD12 (arc=10 days, H=20.1 ~323m) from Petit Jean Mtn. South Obs. (PJMSO) (Nov. 15.40-41p8)
- Observations of small asteroids (H>22.0)
- K07U40K 2007 UK40 (arc=15 days, H=23.4 ~71m) from MLS (Nov. 15.19-20p4)
- Observations of other objects
- K07V07X 2007 VX7 (arc=12 days, H=19.4 ~446m) from Peschiera del Garda Obs. (Nov. 15.86-88p3)
- K07V06T 2007 VT6 (arc=13 days, H=20.3 ~295m) from Greiner Research Obs. (Nov. 16.07-08p3)
- K07U06S 2007 US6 (arc=32 days, H=18.3 ~741m) from New Millennium Obs. (Nov. 3.00-04p6 & 10.95-98p6), Peschiera del Garda Obs. (Nov. 11.88-90p4), and PJMSO (Nov. 15.28-29p6)
- K07U01X 2007 UX1 (arc=29 days, H=20.5 ~269m) from PJMSO (Nov. 15.39-40p6)
- K07T18X 2007 TX18 (arc=38 days, H=17.3 ~1.17 km) from Great Shefford Obs. (Nov. 16.04-06p3)
- K07T15G 2007 TG15 (arc=38 days, H=19.6 ~407m) from Peschiera del Garda Obs. (Nov. 11.83-86p3) and PJMSO (Nov. 15.27-28p6)
- K07S11E 2007 SE11 (i=48.3°, arc=56 days, H=17.8 ~933m) from New Millennium Obs. (Nov. 11.01-05p6), Peschiera del Garda Obs. (Nov. 11.92-93p6 & 12.95-96p5), PJMSO (Nov. 15.34p7), and Greiner Research Obs. (Nov. 16.06-07p7)
- K07S06P 2007 SP6 (arc=54 days, H=18.1 ~812m) from New Millennium Obs. (Nov. 11.16-20p6)
- K07R20D 2007 RD20 (arc=62 days, H=21.0 ~214m) from PJMSO (Nov. 15.37-38p6)
- K07R12U 2007 RU12 (arc=64 days, H=20.0 ~339m) from New Millennium Obs. (Nov. 10.00-04p6) and PJMSO (Nov. 15.35-36p5)
- K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from PJMSO (Nov. 15.33-34p6)
- K07L32R 2007 LR32 (arc=174 days, H=17.2 ~1.23 km) from New Millennium Obs. (Nov. 10.89p2) and PJMSO (Nov. 15.26-27p6)
- K07G03S 2007 GS3 (arc=2 opp, H=19.4 ~446m) from PJMSO (Nov. 15.42p6)
- K05Y55W 2005 YW55 (arc=4 opp, H=19.4 ~446m) from LINEAR (Nov. 15.32-37p5)
- K04T16Y 2004 TY16 (arc=4 opp, H=17.0 ~1.35 km) from New Millennium Obs. (Nov. 11.15-19p4)
- K03W07M 2003 WM7 (q=0.304 AU, Q=4.668 AU, arc=3 opp, H=17.3 ~1.17 km) from New Millennium Obs. (Nov. 11.00-04p6) and LINEAR (Nov. 15.26-31p5)
- J99A10Q 1999 AQ10 (arc=3 opp, H=20.3 ~295m) from New Millennium Obs. (Nov. 10.97-03p8)
- J93T02Q 1993 TQ2 (arc=2 opp, H=20.0 ~339m) from New Millennium Obs. (Nov. 11.02-06p6) and PJMSO (Nov. 15.36p5)
- G2273 162273 1999 VL12 from LINEAR (Nov. 15.26-31p5)
- F3591 153591 2001 SN263 from PJMSO (Nov. 15.41-42p5)
- F3201 153201 2000 WO107 from LINEAR (Nov. 15.45-50p5)
- E3678 143678 2003 SA224 from New Millennium Obs. (Nov. 4.01-04p6 & 10.94p2)
- D8971 138971 2001 CB21 from CSS (Nov. 15.10-12p4)
- D8852 138852 2000 WN10 from CSS (Nov. 15.29-32p4)
- D7084 137084 1998 XS16 from New Millennium Obs. (Nov. 10.78-85p5)
- 99907 99907 1989 VA from New Millennium Obs. (Nov. 10.90p2)
- 86324 86324 1999 WA2 from New Millennium Obs. (Nov. 10.78-82p7)
- 85804 85804 1998 WQ5 from New Millennium Obs. (Nov. 11.02-06p6) and LINEAR (Nov. 15.26-32p5)
- 68359 68359 2001 OZ13 from New Millennium Obs. (Nov. 11.12-13p2)
- 21374 21374 1997 WS22 from LONEOS (Nov. 15.26-33p4)
- 20826 20826 2000 UV13 from New Millennium Obs. (Nov. 10.92p2)
- 19764 19764 2000 NF5 from Chante-Perdrix Obs. (Nov. 14.94-96p3)
- 18736 18736 1998 NU from New Millennium Obs. (Nov. 11.01-05p6)
- 11500 11500 1989 UR from New Millennium Obs. (Nov. 11.10p2) and Malaga Obs. (Nov. 15.13-14p3)
- 08034 8034 Akka (1992 LR) from LINEAR (Nov. 15.26-31p5)
- 03553 3553 Mera (1985 JA) from New Millennium Obs. (Nov. 4.02-05p6 & 10.96-03p8)
- 03200 3200 Phaethon (1983 TB) from Malaga Obs. (Nov. 15.09-10p3)
- 02212 2212 Hephaistos (1978 SB) from New Millennium Obs. (Nov. 3.95-98p6 & 10.93p2) and LINEAR (Nov. 15.20-25p5)
Observers on 16 November '07
Fourteen observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H55 | Astronomical Research Obs. in Illinois, 1 in MPEC 2007-W10 -- 2006 JX |
| 703 | Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2007-W01, 2007-W06, 2007-W07 & 2007-W08 -- 2007 WB, 2007 WA, 2007 VF191, 138971, 138852 |
| A77 | Chante-Perdrix Obs. in France, 1 in MPEC 2007-W01 -- 19764 |
| 850 | Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2007-W02 & 2007-W07 -- 2007 WA, 2007 VB191 |
| J95 | Great Shefford Obs. in England, 2 in MPECs 2007-W01 & 2007-W05 -- 2007 VE191, 2007 TX18 |
| H51 | Greiner Research Obs. in Wisconsin, 3 in MPEC 2007-W01 -- 2007 VT6, 2007 VK184, 2007 SE11 |
| 704 | LINEAR in New Mexico, 8 in MPECs 2007-W01 & 2007-W02 -- 2007 VB191, 2005 YW55, 2003 WM7, 85804, 162273, 153201, 8034, 2212 |
| 699 | LONEOS in Arizona, 1 in MPEC 2007-W01 -- 21374 |
| J40 | Malaga Obs. in Spain, 2 in MPEC 2007-W01 -- 11500, 3200 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2007-W01, 2007-W03, 2007-W04, 2007-W05, 2007-W06, 2007-W07, 2007-W08 & 2007-W09 -- 2007 WC, 2007 WB, 2007 WA, 2007 VF191, 2007 VE191, 2007 VD191, 2007 VC191, 2007 UN12, 2007 UK40 |
| A24 | New Millennium Obs. in Italy, 20 in MPEC 2007-W01 -- 2007 US6, 2007 SP6, 2007 SE11, 2007 RU12, 2007 LR32, 2004 TY16, 2003 WM7, 1999 AQ10, 1993 TQ2, 99907, 86324, 85804, 68359, 20826, 18736, 143678, 137084, 11500, 3553, 2212 |
| A53 | Peschiera del Garda Obs. in Italy, 4 in MPEC 2007-W01 -- 2007 VX7, 2007 US6, 2007 TG15, 2007 SE11 |
| H45 | Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPEC 2007-W01 -- 2007 VD12, 2007 UX1, 2007 US6, 2007 TG15, 2007 SE11, 2007 RU12, 2007 RD20, 2007 PU11, 2007 LR32, 2007 GS3, 1993 TQ2, 153591 |
| 291 | Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2007-W01 -- 2007 VD184 |
Impact Risk Monitoring on 16 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 WA | JPL Sentry | 2003 | 2036-2106 | 144 | 9.5e-06 | -5.02 | -5.67 | 0 | JPL: "Analysis based on 26 observations spanning .13895 days (2007-Nov-16.30779 to 2007-Nov-16.44674)." Diameter approximately 0.041 km. from mean, weighted H=24.6. |
| 2007 VE191 | JPL Sentry | 1829 | 2011-2066 | 93 | 1.1e-05 | -3.80 | -4.12 | 0 | JPL: "Analysis based on 19 observations spanning .89582 days (2007-Nov-15.26603 to 2007-Nov-16.16185)." Diameter approximately 0.066 km. from mean, weighted H=23.5. |
| 2007 VC191 | JPL Sentry | 2208 | 2012-2100 | 55 | 1.2e-08 | -5.52 | -5.91 | 0 | JPL: "Analysis based on 15 observations spanning 1.0394 days (2007-Nov-14.31191 to 2007-Nov-15.35131)." Diameter approximately 0.210 km. from mean, weighted H=21.1. |
| 2007 VH189 | NEODyS | 1830 | 2011-2090 | 241 | 3.37e-07 | -5.36 | -6.28 | 0 | NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2007/11/14.352 to 2007/11/15.255." |
| 2007 VG189 | NEODyS | 1632 | 2009-2089 | 101 | 1.98e-08 | -4.17 | -4.81 | 0 | NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2007/11/13.425 to 2007/11/15.112." |
| 2007 VK184 | NEODyS | 1749 | 2044-2070 | 28 | 7.36e-05 | -2.55 | -2.83 | 0 | NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2007/11/12.140 to 2007/11/16.061." |
| JPL Sentry | 1418 | 2035-2059 | 22 | 7.6e-05 | -2.54 | -2.82 | 0 | JPL: "Analysis based on 41 observations spanning 3.9208 days (2007-Nov-12.13904 to 2007-Nov-16.05981)." Diameter approximately 0.140 km. from mean, weighted H=22.0. | |
| 2007 VD184 | JPL Sentry | 1418 | R E M O V E D | JPL: Risk listing removed at 1239 UTC. | |||||
| 2007 UN12 | NEODyS | 2003 | 2069-2090 | 27 | 8.33e-05 | -6.30 | -7.10 | 0 | NEODyS: "Based on 120 optical observations (of which 0 are rejected as outliers) from 2007/10/21.373 to 2007/11/15.258." |
| JPL Sentry | 1418 | 2075-2107 | 27 | 2.4e-04 | -5.92 | -6.70 | 0 | JPL: "Analysis based on 120 observations spanning 24.885 days (2007-Oct-21.37247 to 2007-Nov-15.25773)." Diameter approximately 0.006 km. from mean, weighted H=28.7. | |
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 November '07
Times are UTC for when the items were noted or added by The Tracking News.
| 2354 | Grabbed MPEC 2007-W10 - 2006 JX - see above |
| 2208 | Noted that JPL Sentry has posted 2007 VC191 as an impact risk - see above |
| 2003 | Noted that NEODyS has updated its 2007 UN12 risk assessment - see above Noted that JPL Sentry has posted 2007 WA as an impact risk - see above |
| 1829 | Noted that JPL Sentry has posted 2007 VE191 as an impact risk - see above Noted that NEODyS has posted 2007 VH189 as an impact risk - see above |
| 1749 | Noted that NEODyS has updated its 2007 VK184 risk assessment - see above |
| 1631 | Noted that NEODyS has posted 2007 VG189 as an impact risk - see above |
| 1534 | Grabbed MPEC 2007-W05 - 2007 VE191 - see above Grabbed MPEC 2007-W06 - 2007 VF191 - see above Grabbed MPEC 2007-W07 - 2007 WA - see above Grabbed MPEC 2007-W08 - 2007 WB - see above Grabbed MPEC 2007-W09 - 2007 WC - see above |
| 1502 | Grabbed MPEC 2007-W04 - 2007 VD191 - see above |
| 1459 | Grabbed MPEC 2007-W02 - 2007 VB191 - see above Grabbed MPEC 2007-W03 - 2007 VC191 - see above |
| 1419 | Grabbed MPEC 2007-W01 - Daily Orbit Update - see above |
| 1418 | Noted that JPL Sentry has updated its 2007 UN12 risk assessment - see above Noted that JPL Sentry has removed 2007 VD184 as an impact risk - see above Noted that JPL Sentry has updated its 2007 VK184 risk assessment - see above |
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