Contents on 17 September '07
- IAU Minor Planet Center
- NEOCP Activity -- 13 listings: 12 new, 1 updated
- New MPECs -- ten MPECs
- Observers -- 27 observing facilities
- Impact Risk Monitoring -- five objects reported
- Chronology
Resources:
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NEOCP Activity on 17 September '07
The MPC's NEO Confirmation Page has 13 listings: 12 new, 1 updated
When last checked at 2331 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had twelve new and one updated listings. All of these were "one nighters." So far Tracking News has counted a total of 35 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 17 September '07
Minor Planet Electronic Circulars
As of last check at 2331 UTC, there have been ten MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-S02 time-stamped "02:46 UT" - Comet P/2007 R3 (Gibbs) - see below
- MPEC 2007-S03 time-stamped "06:10 UT" - Daily Orbit Update - see below
- MPEC 2007-S04 time-stamped "17:19 UT" - Comet P/2007 R4 (Garradd) - see below
- MPEC 2007-S05 time-stamped "17:42 UT" - 2004 ET21 - see below
- MPEC 2007-S06 time-stamped "17:58 UT" - 2007 RL133 - see below
- MPEC 2007-S07 time-stamped "18:01 UT" - 2007 RM133 - see below
- MPEC 2007-S08 time-stamped "18:05 UT" - 2007 RN133 - see below
- MPEC 2007-S09 time-stamped "18:08 UT" - 2007 RO133 - see below
- MPEC 2007-S10 time-stamped "18:10 UT" - 2007 RP133 - see below
- MPEC 2007-S11 time-stamped "18:14 UT" - 2007 RQ133
MPEC 2007-S11 - "18:14 UT" - 2007 RQ133
- K07RD3Q 2007 RQ133 (risk-listed, H=18.4 ~708m) was discovered at 1123 UT 15 Sept. by the Mt. Lemmon Survey (MLS), which observed it at Sept. 15.48-51p7. The discovery was confirmed by Great Shefford Obs. (Sept. 16.12-13p3) and Modra Obs. (Sept. 17.12-13p2).
MPEC 2007-S10 - "18:10 UT" - 2007 RP133
- K07RD3P 2007 RP133 (Q=4.083 AU, H=20.6 ~257m) was discovered at 0939 UT 15 Sept. by LONEOS, which observed it at Sept. 15.40-47p4. The discovery was confirmed by Guidestar Obs. (Sept. 15.83-85p3), Farra d'Isonzo Obs. (Sept. 15.89-92p4), Great Shefford Obs. (Sept. 15.91p3), Eschenberg Obs. (Sept. 15.95p6), Remanzacco Obs. (Sept. 15.95-96p2), Naef Obs. (Sept. 15.95-97p2), Frasso Sabino Obs. (Sept. 15.99-00p2), Modra Obs. (Sept. 16.11p2), Astronomical Research Obs. (ARO) (Sept. 16.17-18p3), and Inastars Obs. (Sept. 16.90-91p3).
MPEC 2007-S09 - "18:08 UT" - 2007 RO133
- K07RD3O 2007 RO133 (small asteroid, Earth MOID=7.3 LD, H=24.9 ~35m) was discovered at 0715 UT 15 Sept. by LINEAR, which observed it at Sept. 15.30-35p5. The discovery was confirmed by Great Shefford Obs. (Sept. 16.08-09p5).
MPEC 2007-S08 - "18:05 UT" - 2007 RN133
- K07RD3N 2007 RN133 (small asteroid, H=25.1 ~32m) was discovered at 0635 UT 15 Sept. by MLS, which observed it at Sept. 15.27-29p4 and 15.38-39p4. The discovery was confirmed by Great Shefford Obs. (Sept. 15.89p3 & 16.99-01p5) and Jim Young via Table Mtn. Obs. (Sept. 17.15-17p4).
MPEC 2007-S07 - "18:01 UT" - 2007 RM133
- K07RD3M 2007 RM133 (H=18.2 ~776m) was discovered at 1124 UT 14 Sept. by the Catalina Sky Survey (CSS), which observed it at Sept. 14.44-49p8. The discovery was confirmed by ARO (Sept. 15.28-30p3), MLS (Sept. 15.31-33p4), and Mt. John Obs. (Sept. 16.52-53p3 & 17.65p1).
MPEC 2007-S06 - "17:58 UT" - 2007 RL133
- K07RD3L 2007 RL133 (H=20.2 ~309m) was discovered at 0957 UT 14 Sept. by CSS, which observed it at Sept. 14.42-43p3 and 14.48-49p4. The discovery was confirmed by ARO (Sept. 15.26-28p4), MLS (Sept. 15.31-32p4), Great Shefford Obs. (Sept. 16.10-11p3), and Mt. John Obs. (Sept. 16.62-63p2 & 17.55p3).
MPEC 2007-S05 - "17:42 UT" - 2004 ET21
- K04E21T 2004 ET21 (i=41.6°, H=20.7 ~245m) from LINEAR (Sept. 16.23-28p5), Silver Spring Obs. (Sept. 17.12-15p3), and Mt. John Obs. (Sept. 17.41p3)
MPEC 2007-S04 - "17:19 UT" - Comet P/2007 R4 (Garradd)
- PK07R040 P/2007 R4 (q=1.923 AU, Q=9.869 AU, TP=2007 Sept. 26.904 TT) from the Siding Spring Survey (SSS) (Aug. 12.70-76p4, Sept. 14.61-66p4, 14.77-78p2, 15.66-70p3 & 17.62p1), CEAMIG-REA (Sept. 16.23-25p3), and Mt. John Obs. (Sept. 16.50p1, 16.54-56p2 & 17.50-51p2)
<< DOU on 17 Sept. '07 >> MPEC 2007-S03 - "06:10 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K07R19Y 2007 RY19 (small asteroid, arc=3 days, H=22.2 ~123m) from Guidestar Obs. (Sept. 16.90-93p4)
- K07R09V 2007 RV9 (arc=5 days, H=20.1 ~323m) from the Spacewatch 0.9m telescope (Sept. 15.16-20p3)
- K07R09U 2007 RU9 (arc=6 days, H=20.8 ~234m) from LONEOS (Sept. 15.21-28p4)
- K07R09T 2007 RT9 (arc=6 days, H=18.9 ~562m) from ARO (Sept. 16.15-19p3 at V=22.2-3)
- Observations of recently (no longer) risk-listed objects
- K07R09R 2007 RR9 (Q=4.650 AU, arc=7 days, H=20.3 ~295m) from Herrenberg Obs. (Sept. 16.92-94p5)
- K07R09A 2007 RA9 (arc=7 days, H=20.0 ~339m) from Mt. John Obs. (Sept. 16.60-61p3)
- Observations of small asteroids (H>22.0)
- K07R17R 2007 RR17 (arc=3 days, H=23.6 ~65m) from LINEAR (Sept. 16.30-35p5)
- K07R17Q 2007 RQ17 (arc=2 days, H=22.7 ~98m) from LONEOS (Sept. 15.21-28p4)
- K07R15P 2007 RP15 (arc=3 days, H=22.7 ~98m) from Frasso Sabino Obs. (Sept. 15.91-92p2) and LINEAR (Sept. 16.18-28p17)
- K07R09P 2007 RP9 (arc=6 days, H=23.2 ~78m) from Great Shefford Obs. (Sept. 15.83-86p3)
- Observations of other objects
- K07R19V 2007 RV19 (Q=5.413 AU, arc=2 days, H=18.7 ~616m) from Frasso Sabino Obs. (Sept. 15.83-84p2) and LINEAR (Sept. 16.12-17p4)
- K07R12R 2007 RR12 (arc=4 days, H=19.8 ~371m) from Frasso Sabino Obs. (Sept. 15.98p2)
- K07R01D 2007 RD1 (arc=14 days, H=21.6 ~162m) from Herrenberg Obs. (Sept. 16.82-83p3)
- K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Celbridge Obs. (Sept. 16.88-90p3)
- K07P08E 2007 PE8 (arc=125 days, H=19.4 ~446m) from Frasso Sabino Obs. (Sept. 15.88-89p3), Homburg-Erbach Obs. (Sept. 15.90-93p3), and Eschenberg Obs. (Sept. 16.78p3)
- K07O00V 2007 OV (arc=62 days, H=19.2 ~490m) from LONEOS (Sept. 14.40-48p4) and LINEAR (Sept. 16.24-29p5)
- K07M06L 2007 ML6 (arc=85 days, H=18.6 ~645m) from SSS (Sept. 14.61-67p4)
- K07L32R 2007 LR32 (arc=111 days, H=17.2 ~1.23 km) from Drebach Obs. (Sept. 13.78-79p3)
- K07DA3T 2007 DT103 (arc=2 opp, H=19.2 ~490m) from CSS (Sept. 14.29-31p4)
- K05O01U 2005 OU1 (arc=3 opp, H=20.1 ~323m) from Herrenberg Obs. (Sept. 16.81-84p4)
- K04R09N 2004 RN9 (arc=3 opp, H=20.8 ~234m) from LINEAR (Sept. 16.35-40p4)
- K04O11T 2004 OT11 (arc=3 opp, H=17.3 ~1.17 km) from Herrenberg Obs. (Sept. 16.78-80p6)
- K02U31A 2002 UA31 (arc=4 opp, H=18.8 ~589m) from Frasso Sabino Obs. (Sept. 15.95p1)
- K02RC9T 2002 RT129 (arc=2 opp, H=19.5 ~426m) from MLS (Sept. 14.35p4)
- K02RC9N 2002 RN129 (arc=4 opp, H=18.9 ~562m) from Herrenberg Obs. (Sept. 16.89-90p3)
- K02N04N 2002 NN4 (arc=4 opp, H=20.0 ~339m) from Drebach Obs. (Sept. 16.78p4)
- K01SR0A 2001 SA270 (i=38.5°, q=0.345 AU, arc=4 opp, H=18.0 ~851m) from Frasso Sabino Obs. (Sept. 15.93p2)
- K01Q34C 2001 QC34 (arc=2 opp, H=20.0 ~339m) from Drebach Obs. (Sept. 15.84-86p2)
- J99J03U 1999 JU3 (arc=4 opp, H=19.2 ~490m) from Drebach Obs. (Sept. 15.82p5), Inastars Obs. (Sept. 16.81-84p5), and Celbridge Obs. (Sept. 16.85-89p3)
- J98S15D 1998 SD15 (arc=4 opp, H=19.2 ~490m) from Eschenberg Obs. (Sept. 16.77p7)
- J98Q28B 1998 QB28 (arc=2 opp, H=20.3 ~295m) from MLS (Sept. 14.26-28p4)
- F2787 152787 1999 TB10 from MLS (Sept. 14.37-39p4) and LONEOS (Sept. 15.42-48p4)
- A0756 100756 1998 FM5 from LINEAR (Sept. 16.24-28p4)
- 21277 21277 1996 TO5 from LINEAR (Sept. 16.17-22p5)
- 17182 17182 1999 VU from LONEOS (Sept. 15.41-48p4)
- 16816 16816 1997 UF9 from CSS (Sept. 14.41-44p4)
- 16636 16636 1993 QP from Hennef Obs. (Sept. 15.89-90p3)
- 07092 7092 Cadmus (1992 LC) from LINEAR (Sept. 16.35-39p4)
- 06489 6489 Golevka (1991 JX) from MLS (Sept. 14.41-42p4 & 14.50-51p4)
- 05786 5786 Talos (1991 RC) from CSS (Sept. 14.32-34p4)
- 05143 5143 Heracles (1991 VL) from LINEAR (Sept. 16.23-27p5)
- 04954 4954 Eric (1990 SQ) from LONEOS (Sept. 15.22-29p4)
- 04183 4183 Cuno (1959 LM) from LINEAR (Sept. 16.23-27p5)
- 02212 2212 Hephaistos (1978 SB) from LINEAR (Sept. 16.35-40p5)
- 01865 1865 Cerberus (1971 UA) from LINEAR (Sept. 16.36-41p5)
- 01221 1221 Amor (1932 EA1) from Hennef Obs. (Sept. 15.94p1)
MPEC 2007-S02 - "02:46 UT" - Comet P/2007 R3 (Gibbs)
- PK07R030 P/2007 R3 (q=2.201 AU, Q=7.323 AU, TP=2007 June 6.477 TT) from MLS (Sept. 14.29-37p12, 15.24-27p4 & 15.35-36p4), ARO (Sept. 15.21-22p3 & 16.15-17p3), Sandlot Obs. (Sept. 15.30-32p3 & 16.40-43p3), Spacewatch 0.9m (Sept. 15.34-37p3), McDonald Obs. (Sept. 15.35-36p3), Guidestar Obs. (Sept. 15.92-98p3), Remanzacco Obs. (Sept. 15.94p1 & 16.02-03p3), Naef Obs. (Sept. 15.94-98p2), Great Shefford Obs. (Sept. 15.00-01p2), and Frasso Sabino Obs. (Sept. 16.01p1)
Observers on 17 September '07
A total of 27 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H55 | Astronomical Research Obs. in Illinois, 5 in MPECs 2007-S02, 2007-S03, 2007-S06, 2007-S07 & 2007-S10 -- 2007 RT9, 2007 RP133, 2007 RM133, 2007 RL133, 2007 R3 |
| I77 | CEAMIG-REA in Brazil, 1 in MPEC 2007-S04 -- 2007 R4 |
| 703 | Catalina Sky Survey in Arizona, 5 in MPECs 2007-S03, 2007-S06 & 2007-S07 -- 2007 RM133, 2007 RL133, 2007 DT103, 16816, 5786 |
| J65 | Celbridge Obs. in Ireland, 2 in MPEC 2007-S03 -- 2007 PU11, 1999 JU3 |
| 113 | Drebach Obs. in Germany, 4 in MPEC 2007-S03 -- 2007 LR32, 2002 NN4, 2001 QC34, 1999 JU3 |
| 151 | Eschenberg Obs. in Switzerland, 3 in MPECs 2007-S03 & 2007-S10 -- 2007 RP133, 2007 PE8, 1998 SD15 |
| 595 | Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-S10 -- 2007 RP133 |
| 157 | Frasso Sabino Obs. in Italy, 8 in MPECs 2007-S02, 2007-S03 & 2007-S10 -- 2007 RV19, 2007 RR12, 2007 RP15, 2007 RP133, 2007 R3, 2007 PE8, 2002 UA31, 2001 SA270 |
| J95 | Great Shefford Obs. in England, 7 in MPECs 2007-S02, 2007-S03, 2007-S06, 2007-S08, 2007-S09, 2007-S10 & 2007-S11 -- 2007 RQ133, 2007 RP9, 2007 RP133, 2007 RO133, 2007 RN133, 2007 RL133, 2007 R3 |
| A17 | Guidestar Obs. in Germany, 3 in MPECs 2007-S02, 2007-S03 & 2007-S10 -- 2007 RY19, 2007 RP133, 2007 R3 |
| B43 | Hennef Obs., 2 in MPEC 2007-S03 -- 16636, 1221 |
| 240 | Herrenberg Obs. in Germany, 5 in MPEC 2007-S03 -- 2007 RR9, 2007 RD1, 2005 OU1, 2004 OT11, 2002 RN129 |
| 196 | Homburg-Erbach Obs. in Germany, 1 in MPEC 2007-S03 -- 2007 PE8 |
| B15 | Inastars Obs. in Germany, 2 in MPECs 2007-S03 & 2007-S10 -- 2007 RP133, 1999 JU3 |
| 704 | LINEAR in New Mexico, 14 in MPECs 2007-S03, 2007-S05 & 2007-S09 -- 2007 RV19, 2007 RR17, 2007 RP15, 2007 RO133, 2007 OV, 2004 RN9, 2004 ET21, 21277, 100756, 7092, 5143, 4183, 2212, 1865 |
| 699 | LONEOS in Arizona, 7 in MPECs 2007-S03 & 2007-S10 -- 2007 RU9, 2007 RQ17, 2007 RP133, 2007 OV, 17182, 152787, 4954 |
| 711 | McDonald Obs. in Texas, 1 in MPEC 2007-S02 -- 2007 R3 |
| 118 | Modra Obs. in Slovakia, 2 in MPECs 2007-S10 & 2007-S11 -- 2007 RQ133, 2007 RP133 |
| 474 | Mt. John Obs. in New Zealand, 5 in MPECs 2007-S03, 2007-S04, 2007-S05, 2007-S06 & 2007-S07 -- 2007 RM133, 2007 RL133, 2007 RA9, 2007 R4, 2004 ET21 |
| G96 | Mt. Lemmon Survey in Arizona, 9 in MPECs 2007-S02, 2007-S03, 2007-S06, 2007-S07, 2007-S08 & 2007-S11 -- 2007 RQ133, 2007 RN133, 2007 RM133, 2007 RL133, 2007 R3, 2002 RT129, 1998 QB28, 152787, 6489 |
| A13 | Naef Obs. in Switzerland, 2 in MPECs 2007-S02 & 2007-S10 -- 2007 RP133, 2007 R3 |
| 473 | Remanzacco Obs. in Italy, 2 in MPECs 2007-S02 & 2007-S10 -- 2007 RP133, 2007 R3 |
| H36 | Sandlot Obs. in Kansas, 1 in MPEC 2007-S02 -- 2007 R3 |
| E12 | Siding Spring Survey in New South Wales, 2 in MPECs 2007-S03 & 2007-S04 -- 2007 R4, 2007 ML6 |
| H85 | Silver Spring Obs. in Maryland, 1 in MPEC 2007-S05 -- 2004 ET21 |
| 691 | Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2007-S02 & 2007-S03 -- 2007 RV9, 2007 R3 |
| 6735 | Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2007-S08 -- 2007 RN133 |
Impact Risk Monitoring on 17 September '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 RY19 | JPL | 1337 | 2016-2107 | 284 | 5.6e-05 | -2.65 | -2.79 | 0 | JPL: "Analysis based on 19 observations spanning 2.5807 days (2007-Sep-14.35284 to 2007-Sep-16.93356)." Diameter approximately 0.130 km. from mean, weighted H=22.1. |
| NEODyS | 1337 | 2016-2090 | 149 | 3.15e-05 | -2.67 | -2.74 | 0 | NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2007/09/14.354 to 2007/09/16.934." | |
| 2007 RV9 | JPL | 1337 | 2030-2042 | 2 | 3.7e-09 | -5.61 | -5.91 | 0 | JPL: "Analysis based on 45 observations spanning 5.1125 days (2007-Sep-10.28811 to 2007-Sep-15.40065)." Diameter approximately 0.364 km. from mean, weighted H=19.8. |
| NEODyS | 1337 | 2030-2042 | 3 | 3.72e-09 | -5.59 | -5.88 | 0 | NEODyS: "Based on 46 optical observations (of which 1 are rejected as outliers) from 2007/09/10.289 to 2007/09/15.401." | |
| 2007 RU9 | JPL | 1337 | 2018-2069 | 7 | 1.9e-06 | -3.04 | -3.20 | 0 | JPL: "Analysis based on 61 observations spanning 5.6475 days (2007-Sep-10.28596 to 2007-Sep-15.93348)." Diameter approximately 0.225 km. from mean, weighted H=20.9. |
| NEODyS | 1337 | 2018-2030 | 4 | 1.93e-06 | -3.02 | -3.19 | 0 | NEODyS: "Based on 63 optical observations (of which 2 are rejected as outliers) from 2007/09/10.287 to 2007/09/15.934." | |
| 2007 RT9 | JPL | 1337 | 2028-2088 | 4 | 3.2e-09 | -5.91 | -6.23 | 0 | JPL: "Analysis based on 38 observations spanning 5.9019 days (2007-Sep-10.28434 to 2007-Sep-16.186248)." Diameter approximately 0.390 km. from mean, weighted H=19.7. |
| NEODyS | 1336 | R E M O V E D | |||||||
| 2007 RQ133 | JPL | 2156 | 2023-2095 | 4 | 1.2e-09 | -5.26 | -5.66 | 0 | JPL: "Analysis based on 12 observations spanning 1.6556 days (2007-Sep-15.475 to 2007-Sep-17.13061)." Diameter approximately 0.876 km. from mean, weighted H=17.9. |
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 an 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 September '07
Times are UTC for when the items were noted or added by Tracking News.
| 2156 | Noted that JPL has posted 2007 RQ133 as an impact risk - see above |
| 1837 | Grabbed MPEC 2007-S04 - Comet P/2007 R4 (Garradd) - see above Grabbed MPEC 2007-S05 - 2004 ET21 - see above Grabbed MPEC 2007-S06 - 2007 RL133 - see above Grabbed MPEC 2007-S07 - 2007 RM133 - see above Grabbed MPEC 2007-S08 - 2007 RN133 - see above Grabbed MPEC 2007-S09 - 2007 RO133 - see above Grabbed MPEC 2007-S10 - 2007 RP133 - see above Grabbed MPEC 2007-S11 - 2007 RQ133 - see above |
| 1338 | Grabbed MPEC 2007-S03 - Daily Orbit Update - see above |
| 1337 | Noted that JPL has updated its 2007 RT9 risk assessment - see above Noted that JPL has updated its 2007 RU9 risk assessment - see above Noted that NEODyS has updated its 2007 RU9 risk assessment - see above Noted that JPL has updated its 2007 RV9 risk assessment - see above Noted that NEODyS has updated its 2007 RV9 risk assessment - see above Noted that JPL has updated its 2007 RY19 risk assessment - see above Noted that NEODyS has updated its 2007 RY19 risk assessment - see above |
| 1336 | Noted that NEODyS has removed 2007 RT9 as an impact risk - see above |
| 0335 | Grabbed MPEC 2007-S02 - Comet P/2007 R3 (Gibbs) - see above |
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