Contents on 17 October '07
- IAU Minor Planet Center
- NEOCP Activity -- 13 listings: 2 new, 11 updated
- New MPECs -- four MPECs
- Observers -- 21 observing facilities
- Impact Risk Monitoring -- seven objects reported
- Chronology
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NEOCP Activity on 17 October '07
The MPC's NEO Confirmation Page has 13 listings: 2 new, 11 updated
When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and eleven updated listings. Of these, ten were "one nighters." The Tracking News counted a total of fifteen objects listed on the NEOCP at some point on this day.
New MPECs on 17 October '07
Minor Planet Electronic Circulars
There were four MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-U15 time-stamped "01:21 UT" - Comets C/2007 M4, 2007 M5, 2007 M6 (SOHO) - see below
- MPEC 2007-U16 time-stamped "01:32 UT" - Comets C/2007 M7, 2007 M8, 2007 M9, 2007 M10 (SOHO) - see below
- MPEC 2007-U17 time-stamped "06:09 UT" - Daily Orbit Update - see below
- MPEC 2007-U18 time-stamped "15:23 UT" - 2007 TE106
MPEC 2007-U18 - "15:23 UT" - 2007 TE106
- K07TA6E 2007 TE106 (Q=4.741 AU, H=19.9 ~355m) was discovered at 1034 UT on 15 Oct. by the Spacewatch 0.9m telescope, which observed it at Oct. 15.44-48p3. The discovery was confirmed by KLENOT (Oct. 16.04p3), the Spacewatch 1.8m telescope (Oct. 16.29-30p3), and the Mt. Lemmon Survey (MLS) (Oct. 17.42-43p3).
<< DOU on 17 Oct. '07 >> MPEC 2007-U17 - "06:09 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K07T72H 2007 TH72 (small asteroid, arc=1 day, H=24.3 ~47m) from MLS (Oct. 16.26-27p4)
- K07T23C 2007 TC23 (Q=4.359 AU, arc=6 days, H=20.6 ~257m) from Guidestar Obs. (Oct. 16.12-15p3) and Spacewatch 1.8m (Oct. 16.35-36p3)
- K07T23B 2007 TB23 (i=38.0°, arc=6 days, H=18.7 ~616m) from Spacewatch 1.8m (Oct. 16.28p3) and the Catalina Sky Survey (CSS) (Oct. 16.43-46p4)
- K07T19H 2007 TH19 (arc=8 days, H=17.8 ~933m) from Spacewatch 0.9m (Oct. 12.38-41p3), Spacewatch 1.8m (Oct. 16.26-27p3), and MLS (Oct. 16.36-38p3)
- K07T16L 2007 TL16 (small asteroid, arc=7 days, H=26.2 ~19m) from MLS (Oct. 16.32-34p3)
- K07T14C 2007 TC14 (small asteroid, arc=8 days, H=22.1 ~129m) from MLS (Oct. 16.14p4 & 16.23p4) and Verona Obs. (Oct. 16.87p5)
- Observations of recently (no longer) risk-listed objects
- K07T68U 2007 TU68 (small asteroid, arc=3 days, H=25.7 ~25m) from MLS (Oct. 16.36-39p4)
- K07T15M 2007 TM15 (i=61.5°, arc=8 days, H=21.3 ~186m) from Modra Obs. (Oct. 16.04p2)
- K07T01H 2007 TH1 (almost small, arc=11 days, H=21.9 ~141m) from Drebach Obs. (Oct. 16.75-76p4) and Eschenberg Obs. (Oct. 16.77-78p3)
- K07S11R 2007 SR11 (almost small, Q=4.435 AU, arc=16 days, H=21.9 ~141m) from Spacewatch 0.9m (Oct. 12.32-36p3)
- K07S00J 2007 SJ (arc=29 days, H=16.4 ~1.78 km) from Desert Moon Obs. (Oct. 16.25-28p3)
- Observations of small asteroids (H>22.0)
- K07U00J 2007 UJ (arc=1 day, H=25.2 ~31m) from Farra d'Isonzo Obs. (Oct. 16.96-97p3)
- K07T03H 2007 TH3 (arc=11 days, H=24.7 ~39m) from KLENOT (Oct. 16.76p4) and Madonna di Dossobuono Obs. (Oct. 16.88-90p3)
- Observations of other objects
- K07T68W 2007 TW68 (arc=3 days, H=19.2 ~490m) from Spacewatch 1.8m (Oct. 16.20-21p3)
- K07T65R 2007 TR65 (i=43.3°, arc=4 days, H=19.0 ~537m) from Verona Obs. (Oct. 15.93p3)
- K07T24V 2007 TV24 (arc=5 days, H=17.8 ~933m) from KLENOT (Oct. 16.05p6) and Desert Moon Obs. (Oct. 16.43-45p3)
- K07T24R 2007 TR24 (arc=6 days, H=20.3 ~295m) from Eschenberg Obs. (Oct. 16.85-86p3)
- K07T19S 2007 TS19 (arc=7 days, H=20.8 ~234m) from Dresden Obs. (Oct. 15.87-89p5), Atlante Obs. (Oct. 15.87-89p3), Eschenberg Obs. (Oct. 16.79-80p15), and Verona Obs. (Oct. 16.89-90p5)
- K07T19A 2007 TA19 (arc=7 days, H=19.6 ~407m) from the Siding Spring Survey (SSS) (Oct. 16.39p1)
- K07T15K 2007 TK15 (arc=8 days, H=21.1 ~204m) from Spacewatch 0.9m (Oct. 12.38-41p3)
- K07T15G 2007 TG15 (arc=8 days, H=19.8 ~371m) from Drebach Obs. (Oct. 16.74-75p3)
- K07T08K 2007 TK8 (arc=9 days, H=21.3 ~186m) from LINEAR (Oct. 15.20-25p5) and Desert Moon Obs. (Oct. 16.32-33p3)
- K07T08G 2007 TG8 (Q=4.307 AU, arc=34 days, H=18.9 ~562m) from Drebach Obs. (Oct. 16.91-92p6)
- K07S11V 2007 SV11 (arc=19 days, H=18.0 ~851m) from Desert Moon Obs. (Oct. 16.08-10p3)
- K07S06P 2007 SP6 (arc=25 days, H=18.0 ~851m) from Guidestar Obs. (Oct. 16.09-10p3)
- K07S02V 2007 SV2 (arc=26 days, H=21.1 ~204m) from Desert Moon Obs. (Oct. 16.14-21p3)
- K07R05F 2007 RF5 (arc=41 days, H=18.4 ~708m) from San Benedetto Po Obs. (Oct. 15.81-82p2) and Drebach Obs. (Oct. 16.88-89p5)
- K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Spacewatch 0.9m (Oct. 16.32-36p3), Spacewatch 1.8m (Oct. 16.41-46p6), Hamamatsu-Yuto Obs. (Oct. 16.57-59p8), and Modra Obs. (Oct. 16.83-84p4)
- K07L32R 2007 LR32 (arc=144 days, H=17.2 ~1.23 km) from San Benedetto Po Obs. (Oct. 15.82p4) and Drebach Obs. (Oct. 16.89-90p6)
- K07D41L 2007 DL41 (arc=2 opp, H=20.6 ~257m) from CSS (Oct. 16.44-46p4)
- K05X80L 2005 XL80 (arc=2 opp, H=18.1 ~812m) from Spacewatch 0.9m (Oct. 12.44-46p2 & 16.44-48p3)
- K05S00G 2005 SG (arc=4 opp, H=19.0 ~537m) from CSS (Oct. 16.39-42p4)
- K04RP2D 2004 RD252 (arc=2 opp, H=19.1 ~513m) from CSS (Oct. 16.31-33p4)
- K02U31A 2002 UA31 (arc=4 opp, H=19.0 ~537m) from Dresden Obs. (Oct. 15.82-83p3) and Eschenberg Obs. (Oct. 16.76p11)
- K02RB8C 2002 RC118 (Q=4.624 AU, arc=2 opp, H=16.7 ~1.55 km) from Hamamatsu-Yuto Obs. (Oct. 16.62-63p3)
- G3051 163051 2001 YJ4 from MLS (Oct. 16.35-39p4)
- 52768 52768 1998 OR2 from Spacewatch 0.9m (Oct. 12.27-30p3)
- 19764 19764 2000 NF5 from MLS (Oct. 16.42-44p4)
- 04954 4954 Eric (1990 SQ) from Malaga Obs. (Oct. 10.95p3)
- 04503 4503 Cleobulus (1989 WM) from Spacewatch 0.9m (Oct. 16.49-52p3)
- 04486 4486 Mithra (1987 SB) from Spacewatch 0.9m (Oct. 16.37-41p3)
- 03757 3757 1982 XB from Spacewatch 0.9m (Oct. 16.49-51p3)
- 02212 2212 Hephaistos (1978 SB) from Spacewatch 0.9m (Oct. 16.26-29p3)
MPEC 2007-U16 - "01:32 UT" - Comets C/2007 M7, 2007 M8, 2007 M9, 2007 M10 (SOHO)
- CK07M100 C/2007 M10 from the LASCO Coronagraph 3 on the Solar & Heliospheric Obs. (SOHO) (June 29.85-93p10, 29.97-03p6, 30.07-11p6, 30.18p2 & 30.22-26p6) and the LASCO Coronagraph 2 on the Solar & Heliospheric Obs. (SOHO) (June 30.23-35p16)
- CK07M090 C/2007 M9 from SOHO C2 (June 27.60-75p24)
- CK07M080 C/2007 M8 from SOHO C2 (June 25.56-69p20)
- CK07M070 C/2007 M7 from SOHO C2 (June 25.41-54p20)
MPEC 2007-U15 - "01:21 UT" - Comets C/2007 M4, 2007 M5, 2007 M6 (SOHO)
- CK07M060 C/2007 M6 from SOHO C3 (June 25.35-49p16 & 25.53p2) and SOHO C2 (June 25.60-67p12)
- CK07M050 C/2007 M5 from SOHO C2 (June 25.23-42p28)
- CK07M040 C/2007 M4 from SOHO C3 (June 24.70-93p22, 24.97-28p30, 25.32-53p20, 25.57-70p14, 25.83-93p10 & 25.97-07p10) and SOHO C2 (June 26.06-29p30)
Observers on 17 October '07
A total of 21 observing facilities appeared in this day's MPECs.
| Code | Observer / observatory |
|---|---|
| J51 | Atlante Obs. in the Canary Islands, 1 in MPEC 2007-U17 -- 2007 TS19 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2007-U17 -- 2007 TB23, 2007 DL41, 2005 SG, 2004 RD252 |
| 448 | Desert Moon Obs. in New Mexico, 5 in MPEC 2007-U17 -- 2007 TV24, 2007 TK8, 2007 SV2, 2007 SV11, 2007 SJ |
| 113 | Drebach Obs. in Germany, 5 in MPEC 2007-U17 -- 2007 TH1, 2007 TG8, 2007 TG15, 2007 RF5, 2007 LR32 |
| 639 | Dresden Obs. in Germany, 2 in MPEC 2007-U17 -- 2007 TS19, 2002 UA31 |
| 151 | Eschenberg Obs. in Switzerland, 4 in MPEC 2007-U17 -- 2007 TS19, 2007 TR24, 2007 TH1, 2002 UA31 |
| 595 | Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-U17 -- 2007 UJ |
| A17 | Guidestar Obs. in Germany, 2 in MPEC 2007-U17 -- 2007 TC23, 2007 SP6 |
| 379 | Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2007-U17 -- 2007 PU11, 2002 RC118 |
| 246 | KLENOT in the Czech Republic, 3 in MPECs 2007-U17 & 2007-U18 -- 2007 TV24, 2007 TH3, 2007 TE106 |
| 704 | LINEAR in New Mexico, 1 in MPEC 2007-U17 -- 2007 TK8 |
| 560 | Madonna di Dossobuono Obs. in Italy, 1 in MPEC 2007-U17 -- 2007 TH3 |
| J40 | Malaga Obs. in Spain, 1 in MPEC 2007-U17 -- 4954 |
| 118 | Modra Obs. in Slovakia, 2 in MPEC 2007-U17 -- 2007 TM15, 2007 PU11 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2007-U17 & 2007-U18 -- 2007 TU68, 2007 TL16, 2007 TH72, 2007 TH19, 2007 TE106, 2007 TC14, 19764, 163051 |
| 434 | San Benedetto Po Obs. in Italy, 2 in MPEC 2007-U17 -- 2007 RF5, 2007 LR32 |
| E12 | Siding Spring Survey in New South Wales, 1 in MPEC 2007-U17 -- 2007 TA19 |
| 2492 | LASCO Coronagraph 2 (SOHO C2) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 7 in MPECs 2007-U15 & 2007-U16 -- C/2007 M9, C/2007 M8, C/2007 M7, C/2007 M6, C/2007 M5, C/2007 M4, C/2007 M10 |
| 2493 | LASCO Coronagraph 3 (SOHO C3) via the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 3 in MPECs 2007-U15 & 2007-U16 -- C/2007 M6, C/2007 M4, C/2007 M10 |
| 691 | Spacewatch 0.9m telescope in Arizona, 11 in MPECs 2007-U17 & 2007-U18 -- 2007 TK15, 2007 TH19, 2007 TE106, 2007 SR11, 2007 PU11, 2005 XL80, 52768, 4503, 4486, 3757, 2212 |
| 291 | Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2007-U17 & 2007-U18 -- 2007 TW68, 2007 TH19, 2007 TE106, 2007 TC23, 2007 TB23, 2007 PU11 |
| A48 | Verona Obs. in Italy, 3 in MPEC 2007-U17 -- 2007 TS19, 2007 TR65, 2007 TC14 |
Impact Risk Monitoring on 17 October '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 UH | NEODyS | 1406 | 2013-2023 | 3 | 9.68e-08 | -4.94 | -5.32 | 0 | NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2007/10/16.323 to 2007/10/16.859." |
| JPL Sentry | 0310 | 2018-2106 | 70 | 9.2e-08 | -5.32 | -5.66 | 0 | JPL: "Analysis based on 15 observations spanning .53580 days (2007-Oct-16.32204 to 2007-Oct-16.85784)." Diameter approximately 0.130 km. from mean, weighted H=22.0. | |
| 2007 TH72 | NEODyS | 1246 | 2038-2082 | 14 | 4.24e-08 | -6.96 | -7.47 | 0 | NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2007/10/15.204 to 2007/10/16.272." |
| JPL Sentry | 1245 | 2035-2105 | 37 | 4.4e-07 | -6.02 | -6.35 | 0 | JPL: "Analysis based on 16 observations spanning 1.0684 days (2007-Oct-15.20289 to 2007-Oct-16.27125)." Diameter approximately 0.046 km. from mean, weighted H=24.3. | |
| 2007 TC23 | NEODyS | 1405 | R E M O V E D | ||||||
| JPL Sentry | 1334 | R E M O V E D | JPL: Risk listing removed at 1314 UTC. | ||||||
| 2007 TB23 | JPL Sentry | 1334 | 2042-2107 | 7 | 6.2e-07 | -3.19 | -3.23 | 0 | JPL: "Analysis based on 40 observations spanning 6.0700 days (2007-Oct-10.38885 to 2007-Oct-16.45887)." Diameter approximately 0.610 km. from mean, weighted H=18.7. |
| NEODyS | 1246 | 2042 | 1 | 2.98e-11 | -7.10 | -7.10 | 0 | NEODyS: "Based on 40 optical observations (of which 0 are rejected as outliers) from 2007/10/10.390 to 2007/10/16.460." | |
| 2007 TH19 | JPL Sentry | 1245 | 2012 | 1 | 1.3e-10 | -5.26 | -5.26 | 0 | JPL: "Analysis based on 35 observations spanning 7.9534 days (2007-Oct-08.42597 to 2007-Oct-16.37936)." Diameter approximately 1.200 km. from mean, weighted H=17.2. |
| NEODyS | 1405 | R E M O V E D | |||||||
| 2007 TL16 | NEODyS | 1246 | 2073-2090 | 17 | 5.8e-06 | -6.03 | -6.20 | 0 | NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2007/10/09.288 to 2007/10/16.343." |
| JPL Sentry | 1245 | 2074-2095 | 13 | 6.0e-06 | -5.96 | -6.12 | 0 | JPL: "Analysis based on 35 observations spanning 7.0546 days (2007-Oct-09.28741 to 2007-Oct-16.34199)." Diameter approximately 0.021 km. from mean, weighted H=26.1. | |
| 2007 TC14 | NEODyS | 1406 | 2082 | 1 | 1.47e-07 | -5.27 | -5.27 | 0 | NEODyS: "Based on 129 optical observations (of which 0 are rejected as outliers) from 2007/10/08.391 to 2007/10/16.872." |
| JPL Sentry | 1245 | 2082 | 1 | 1.4e-07 | -5.28 | -5.28 | 0 | JPL: "Analysis based on 129 observations spanning 8.4810 days (2007-Oct-08.39044 to 2007-Oct-16.87145)." Diameter approximately 0.130 km. from mean, weighted H=22.2. | |
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" for more about this.
Chronology on 17 October '07
Times are UTC for when the items were noted or added by The Tracking News.
| 1558 | Grabbed MPEC 2007-U18 - 2007 TE106 - see above |
| 1406 | Noted that NEODyS has updated its 2007 TC14 risk assessment - see above |
| 1405 | Noted that NEODyS has removed 2007 TC23 as an impact risk - see above Noted that NEODyS has removed 2007 TH19 as an impact risk - see above Noted that NEODyS has posted 2007 UH as an impact risk - see above |
| 1334 | Noted that JPL Sentry has updated its 2007 TB23 risk assessment - see above Noted that JPL Sentry has removed 2007 TC23 as an impact risk - see above |
| 1246 | Noted that NEODyS has updated its 2007 TB23 risk assessment - see above Noted that NEODyS has updated its 2007 TH72 risk assessment - see above Noted that NEODyS has updated its 2007 TL16 risk assessment - see above Grabbed MPEC 2007-U17 - Daily Orbit Update - see above |
| 1245 | Noted that JPL Sentry has updated its 2007 TC14 risk assessment - see above Noted that JPL Sentry has updated its 2007 TH19 risk assessment - see above Noted that JPL Sentry has updated its 2007 TH72 risk assessment - see above Noted that JPL Sentry has updated its 2007 TL16 risk assessment - see above |
| 0310 | Noted that JPL Sentry has posted 2007 UH as an impact risk - see above |
| 0201 | Grabbed MPEC 2007-U15 - Comets C/2007 M4, 2007 M5, 2007 M6 (SOHO) - see above Grabbed MPEC 2007-U16 - Comets C/2007 M7, 2007 M8, 2007 M9, 2007 M10 (SOHO) - see above |
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