Contents on 5 June '08
- IAU Minor Planet Center
- NEOCP Activity -- two listings: 2 new
- New MPECs -- ten MPECs
- Observers -- 20 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
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NEOCP Activity on 5 June '08
The MPC's NEO Confirmation Page has 2 listings: 2 new
When last checked at 2046 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new listings. Both of these were "one nighters." The Tracking News counted a total of four objects listed on the NEOCP at some point on this day.
New MPECs on 5 June '08
Minor Planet Electronic Circulars
There were ten MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2008-L18 time-stamped "03:04 UT" - Comets C/2008 C6, 2008 C7, 2008 C8, 2000 C9 (SOHO) - see below
- MPEC 2008-L19 time-stamped "03:31 UT" - Comets C/2008 D5, 2008 D6, 2008 D7 (SOHO) - see below
- MPEC 2008-L20 time-stamped "06:08 UT" - Daily Orbit Update - see below
- MPEC 2008-L21 time-stamped "11:23 UT" - 2008 JF - see below
- MPEC 2008-L22 time-stamped "11:45 UT" - 2008 LH2 - see below
- MPEC 2008-L23 time-stamped "18:03 UT" - Comet P/2008 J3 (McNaught) - see below
- MPEC 2008-L24 time-stamped "18:07 UT" - Comet C/2008 J5 (Garradd) - see below
- MPEC 2008-L25 time-stamped "18:10 UT" - Comet C/2008 J6 (Hill) - see below
- MPEC 2008-L26 time-stamped "21:52 UT" - Comets C/2008 D8, 2008 D9, 2008 E7 (SOHO) - see below
- MPEC 2008-L27 time-stamped "22:20 UT" - Comets C/2008 E8, 2008 E9, 2008 G3, 2008 G4 (SOHO)
MPEC 2008-L27 - "22:20 UT" - Comets C/2008 E8, 2008 E9, 2008 G3, 2008 G4 (SOHO)
- CK08G040 C/2008 G4 from the LASCO Coronagraph 2 aboard the Solar & Heliospheric Obs. (SOHO) (April 9.49-64p20)
- CK08G030 C/2008 G3 from SOHO C2 (April 1.98-02p8 & 2.06-09p6)
- CK08E090 C/2008 E9 from the HI1-A instrument (4) aboard STEREO-A (March 11.41-49p8 & 11.54-63p8), the LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. (SOHO) (March 12.03p2 & 12.07-28p22), and SOHO C2 (March 12.35-40p6)
- CK08E080 C/2008 E8 from STEREO-A/HI1-A (4) (March 6.27-29p4, 6.43-68p20 & 6.74-85p10) and SOHO C3 (March 7.07-35p26 & 7.39-45p8)
MPEC 2008-L26 - "21:52 UT" - Comets C/2008 D8, 2008 D9, 2008 E7 (SOHO)
- CK08E070 C/2008 E7 from SOHO C3 (March 4.64-93p28, 4.97-03p8, 5.07-28p22, 5.32-78p44, 5.82-93p12, 5.97-03p8 & 6.07-18p12) and SOHO C2 (March 6.40-79p54)
- CK08D090 C/2008 D9 from STEREO-A/HI1-A (4) (Feb. 28.49-57p8, 28.63-68p6, 28.74p2 & 28.79-32p40), SOHO C3 (Feb. 29.24-28p6, 29.35-40p8, 29.45-78p34 & 29.82-85p4), and SOHO C2 (Feb. 29.91-92p4)
- CK08D080 C/2008 D8 from STEREO-A/HI1-A (4) (Feb. 24.02-04p4, 24.10-21p10 & 24.27p2) and SOHO C3 (Feb. 24.55-68p14)
MPEC 2008-L25 - "18:10 UT" - Comet C/2008 J6 (Hill)
- CK08J060 C/2008 J6 (Hill) (i=45.0°, q=2.003 AU, TP=2008 Apr. 10.884 TT) from Yatsuka Obs. (May 31.74-75p3), Nazaret Obs. (June 1.09-10p3), Skalnate Pleso Obs. (June 1.96-98p3), and RAS Obs. Mayhill (June 3.37-41p2)
MPEC 2008-L24 - "18:07 UT" - Comet C/2008 J5 (Garradd)
- CK08J050 C/2008 J5 (Garradd) (i=93.3°, q=1.964 AU, Q=144.346 AU, TP=2008 Apr. 1.127 TT) from North Ryde Obs. (May 29.62-64p2, 30.60-63p2 & 31.62-66p2), Farm Cove Obs. (June 4.53p3), and Kambah Obs. (June 5.62p2)
MPEC 2008-L23 - "18:03 UT" - Comet P/2008 J3 (McNaught)
- PK08J030 P/2008 J3 (McNaught) (q=2.292 AU, Q=5.508 AU, TP=2009 Mar. 10.323 TT) from North Ryde Obs. (May 30.67-70p2) and Kambah Obs. (June 5.63-66p2)
MPEC 2008-L22 - "11:45 UT" - 2008 LH2
- K08L02H 2008 LH2 (small asteroid, Earth MOID=1.3 LD, H=24.3 ~47m) was discovered at 0736 UT on 4 June by LINEAR, which observed it at June 4.32-36p5. The discovery was confirmed by Great Shefford Obs. (June 5.03p3) and Sabino Canyon Obs. (June 5.31p3). This object was within ten lunar distances (LD) of Earth, reaching 8.9 LD on 3 June.
MPEC 2008-L21 - "11:23 UT" - 2008 JF
- K08J00F 2008 JF (H=17.9 ~891m) from LINEAR (June 4.22-26p5), Great Shefford Obs. (June 4.92-93p3), Jim Young via Table Mtn. Obs. (June 5.18-23p4), and Sabino Canyon Obs. (June 5.27-28p3)
<< DOU on 5 June '08 >> MPEC 2008-L20 - "06:08 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08L00D 2008 LD (small asteroid, arc=2 days, H=29.0 ~5m) from the Spacewatch 1.8m telescope (June 4.22-23p3)
- K08L00B 2008 LB (small asteroid, Q=4.065 AU, arc=3 days, H=25.8 ~23m) from Spacewatch 1.8m (June 4.16-17p3)
- K08K11N 2008 KN11 (small asteroid, arc=5 days, H=23.1 ~81m) from Spacewatch 1.8m (June 4.21p3)
- Observations of recently (no longer) risk-listed objects
- K08K06D 2008 KD6 (arc=6 days, H=19.5 ~426m) from Spacewatch 1.8m (June 4.36p2)
- Observations of small asteroids (H>22.0)
- K08L00C 2008 LC (arc=3 days, H=24.4 ~45m) from the Spacewatch 0.9m telescope (June 4.29-32p3)
- K08GB0A 2008 GA110 (Q=4.497 AU, arc=51 days, H=22.1 ~129m) from Spacewatch 0.9m (June 4.40-44p4)
- Observations of other objects
- K08J26R 2008 JR26 (arc=22 days, H=19.9 ~355m) from LINEAR (June 4.26-30p5)
- K08J00O 2008 JO (arc=33 days, H=18.3 ~741m) from Desert Moon Obs. (June 4.14-17p3)
- K08J00G 2008 JG (arc=34 days, H=20.8 ~234m) from Desert Moon Obs. (June 4.26-31p3)
- K08H04V 2008 HV4 (arc=35 days, H=19.5 ~426m) from Spacewatch 0.9m (June 4.16-20p3)
- K08E06L 2008 EL6 (arc=91 days, H=21.1 ~204m) from Spacewatch 1.8m (June 4.37-38p2)
- K07VI3R 2007 VR183 (Q=4.353 AU, arc=264 days, H=17.5 ~1.07 km) from Petit Jean Mtn. South Obs. (PJMSO) (June 4.16-17p5)
- K07V04Q 2007 VQ4 (arc=3 opp, H=16.1 ~2.04 km, q=1.271 AU) from PJMSO (June 4.15-16p5)
- K07M13K 2007 MK13 (arc=2 opp, H=20.0 ~339m) from Desert Moon Obs. (June 4.21-23p3)
- K05TH4J 2005 TJ174 (arc=5 opp, H=16.5 ~1.70 km) from Las Campanas Obs. (June 4.30-32p5)
- K00WA7M 2000 WM107 (Q=4.085 AU, arc=3 opp, H=18.8 ~589m) from the Mt. Lemmon Survey (MLS) (June 4.27-28p3)
- F4453 154453 2003 CJ11 from Spacewatch 0.9m (June 4.18-22p3)
- A2873 102873 1999 WK11 from MLS (June 4.18-19p4)
- 54789 54789 2001 MZ7 from LINEAR (June 4.32-35p4)
- 01917 1917 Cuyo (1968 AA) from Malaga Obs. (June 5.10-11p4)
MPEC 2008-L19 - "03:31 UT" - Comets C/2008 D5, 2008 D6, 2008 D7 (SOHO)
- CK08D070 C/2008 D7 from STEREO-A/HI1-A (4) (Feb. 24.54p2, 24.66-77p10, 24.85-88p4, 24.96-02p6, 25.10-16p6, 25.21-27p6 & 25.32-43p10) and SOHO C3 (Feb. 25.55-78p24 & 25.82-93p12)
- CK08D060 C/2008 D6 from SOHO C2 (Feb. 19.17-31p22)
- CK08D050 C/2008 D5 from SOHO C3 (Feb. 19.03-26p22)
MPEC 2008-L18 - "03:04 UT" - Comets C/2008 C6, 2008 C7, 2008 C8, 2000 C9 (SOHO)
- CK08C090 C/2008 C9 from SOHO C2 (Feb. 15.06-17p16)
- CK08C080 C/2008 C8 from SOHO C3 (Feb. 14.82-89p8, 15.07-24p16 & 15.40-53p14) and SOHO C2 (Feb. 15.90-94p6)
- CK08C070 C/2008 C7 from STEREO-A/HI1-A (4) (Feb. 8.82-85p4, 8.91-99p8, 9.04-07p4 & 9.13-18p6) and SOHO C3 (Feb. 9.20-28p10 & 9.32-53p22)
- CK08C060 C/2008 C6 from STEREO-A/HI1-A (4) (Feb. 7.29p2 & 7.35-49p12) and SOHO C3 (Feb. 7.70-80p12)
Observers on 5 June '08
A total of 20 observing facilities appeared in this day's MPECs.
| Code | Observer / observatory |
|---|---|
| 448 | Desert Moon Obs. in New Mexico, 3 in MPEC 2008-L20 -- 2008 JO, 2008 JG, 2007 MK13 |
| E85 | Farm Cove Obs. in New Zealand, 1 in MPEC 2008-L24 -- C/2008 J5 |
| J95 | Great Shefford Obs. in England, 2 in MPECs 2008-L21 & 2008-L22 -- 2008 LH2, 2008 JF |
| 415 | Kambah Obs. in the Australian Capital Territory, 2 in MPECs 2008-L23 & 2008-L24 -- C/2008 J5, P/2008 J3 |
| 704 | LINEAR in New Mexico, 4 in MPECs 2008-L20, 2008-L21 & 2008-L22 -- 2008 LH2, 2008 JR26, 2008 JF, 54789 |
| 304 | Las Campanas Obs. in Chile, 1 in MPEC 2008-L20 -- 2005 TJ174 |
| J40 | Malaga Obs. in Spain, 1 in MPEC 2008-L20 -- 1917 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2008-L20 -- 2000 WM107, 102873 |
| J47 | Nazaret Obs. in Spain, 1 in MPEC 2008-L25 -- C/2008 J6 |
| 423 | North Ryde Obs. in New South Wales, 2 in MPECs 2008-L23 & 2008-L24 -- C/2008 J5, P/2008 J3 |
| H45 | Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 2 in MPEC 2008-L20 -- 2007 VR183, 2007 VQ4 |
| H06 | RAS Obs. Mayhill in New Mexico, 1 in MPEC 2008-L25 -- C/2008 J6 |
| C494 | HI1-A instrument (4) aboard STEREO-A in heliocentric orbit leading Earth, 7 in MPECs 2008-L18, 2008-L19, 2008-L26 & 2008-L27 -- C/2008 E9, C/2008 E8, C/2008 D9, C/2008 D8, C/2008 D7, C/2008 C7, C/2008 C6 |
| 854 | Sabino Canyon Obs. in Arizona, 2 in MPECs 2008-L21 & 2008-L22 -- 2008 LH2, 2008 JF |
| 056 | Skalnate Pleso Obs. in Slovakia, 1 in MPEC 2008-L25 -- C/2008 J6 |
| 2492 | LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 8 in MPECs 2008-L18, 2008-L19, 2008-L26 & 2008-L27 -- C/2008 G4, C/2008 G3, C/2008 E9, C/2008 E7, C/2008 D9, C/2008 D6, C/2008 C9, C/2008 C8 |
| 2493 | LASCO Coronagraph 3 (SOHO C3) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 10 in MPECs 2008-L18, 2008-L19, 2008-L26 & 2008-L27 -- C/2008 E9, C/2008 E8, C/2008 E7, C/2008 D9, C/2008 D8, C/2008 D7, C/2008 D5, C/2008 C8, C/2008 C7, C/2008 C6 |
| 691 | Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2008-L20 -- 2008 LC, 2008 HV4, 2008 GA110, 154453 |
| 291 | Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2008-L20 -- 2008 LD, 2008 LB, 2008 KN11, 2008 KD6, 2008 EL6 |
| 6735 | Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2008-L21 -- 2008 JF |
| 367 | Yatsuka Obs., 1 in MPEC 2008-L25 -- C/2008 J6 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 5 June '08
| 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 |
| 2008 LG2 | NEODyS | 1434 | 2027-2087 | 21 | 2.91e-06 | -5.47 | -5.71 | 0 | NEODyS: "Based on 8 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/04.351." |
| JPL Sentry | 0316 | 2015-2106 | 218 | 1.1e-05 | -5.10 | -5.78 | 0 | JPL: "Analysis based on 8 observations spanning 1.0325 days (2008-Jun-03.31737 to 2008-Jun-04.34991)." Diameter approximately 0.033 km. from mean, weighted H=25.1. | |
| 2008 LD | NEODyS | 1434 | 2049-2090 | 35 | 3.15e-05 | -6.67 | -6.91 | 0 | NEODyS: "Based on 22 optical observations (of which 1 are rejected as outliers) from 2008/06/02.292 to 2008/06/04.227." |
| JPL Sentry | 1433 | 2049-2108 | 53 | 5.0e-05 | -6.55 | -6.99 | 0 | JPL: "Analysis based on 21 observations spanning 1.9348 days (2008-Jun-02.29145 to 2008-Jun-04.22626)." Diameter approximately 0.005 km. from mean, weighted H=29.0. | |
| 2008 LB | JPL Sentry | 1433 | R E M O V E D | JPL: Risk listing removed at 0850 UTC. | |||||
| NEODyS | 1433 | R E M O V E D | - | ||||||
| 2008 KN11 | NEODyS | 1434 | 2030-2046 | 6 | 6.68e-07 | -5.05 | -5.31 | 0 | NEODyS: "Based on 53 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/04.214." |
| JPL Sentry | 1433 | 2037-2046 | 5 | 6.8e-07 | -5.05 | -5.32 | 0 | JPL: "Analysis based on 53 observations spanning 4.8790 days (2008-May-30.33435 to 2008-Jun-04.21336)." Diameter approximately 0.080 km. from mean, weighted H=23.2. | |
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" to learn more.
Chronology on 5 June '08
Times are UTC for when items were noted or added by The Tracking News.
| 0201 6/6 | Grabbed MPEC 2008-L26 - Comets C/2008 D8, 2008 D9, 2008 E7 (SOHO) - see above Grabbed MPEC 2008-L27 - Comets C/2008 E8, 2008 E9, 2008 G3, 2008 G4 (SOHO) - see above |
| 2046 | Grabbed MPEC 2008-L23 - Comet P/2008 J3 (McNaught) - see above Grabbed MPEC 2008-L24 - Comet C/2008 J5 (Garradd) - see above Grabbed MPEC 2008-L25 - Comet C/2008 J6 (Hill) - see above |
| 1434 | Noted that NEODyS has updated its 2008 KN11 risk assessment - see above Noted that NEODyS has updated its 2008 LD risk assessment - see above Grabbed MPEC 2008-L19 - Comets C/2008 D5, 2008 D6, 2008 D7 (SOHO) - see above Grabbed MPEC 2008-L20 - Daily Orbit Update - see above Grabbed MPEC 2008-L21 - 2008 JF - see above Grabbed MPEC 2008-L22 - 2008 LH2 - see above |
| 1433 | Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above Noted that JPL Sentry has removed 2008 LB as an impact risk - see above Noted that NEODyS has removed 2008 LB as an impact risk - see above Noted that JPL Sentry has updated its 2008 LD risk assessment - see above Noted that NEODyS has posted 2008 LG2 as an impact risk - see above |
| 0316 | Noted that JPL Sentry has posted 2008 LG2 as an impact risk - see above Grabbed MPEC 2008-L18 - Comets C/2008 C6, 2008 C7, 2008 C8, 2000 C9 (SOHO) - see above |
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