Contents on 20 May '07
- Minor-Object News -- one item
- Minor-Object Science -- none today
- IAU Minor Planet Center
- NEOCP Activity -- five listings: 4 new, 1 updated
- New MPECs -- three MPECs
- Observers -- thirteen observing facilities
- Impact Risk Monitoring -- one object reported
- Chronology
WELCOME to A/CC's prototype daily news publication designed to be the viewing end of a planned autonomous 24-hour news service. The new tools and this publication format are working well enough now to share with readers. It is expected that this approach will require less time to maintain than our previous news and small asteroid pages, which were retired on May 14th. There's still more development ahead and there probably will be some glitches along the way, but this is what's needed to keep up with the increasing pace of minor-object news. The CRT page will be maintained separately for a little while longer, until all of this is working smoothly. And the CRT and small-asteroid ephemerides will be kept going.
Minor-Object News on 20 May '07
- "Diamonds tell tale of comet that killed off the cavemen," London Guardian 20 May - Quote: "A group of US scientists ... will report that they have found a layer of microscopic diamonds at 26 different sites in Europe, Canada and America. These are the remains of a giant carbon-rich comet that crashed in pieces on our planet 12,900 years ago [explaining] the sudden disappearance of the first Stone Age people of America, the disappearance of mammoths ... and the sudden cooling of the planet."
NEOCP Activity on 20 May '07
The MPC's NEO Confirmation Page has 5 listings: 4 new, 1 updated
When last checked at 2352 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and one updated listings. Of these, four were "one nighters." Major News counted a total of seven objects listed on the NEOCP at some point on this day.
New MPECs on 20 May '07
Minor Planet Electronic Circulars
There were three MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-K26 time-stamped "02:45 UT" - 2005 JA22 - see below
- MPEC 2007-K27 time-stamped "04:14 UT" - 1999 JR6 = 2007 JW2 - see below
- MPEC 2007-K28 time-stamped "06:08 UT" - Daily Orbit Update
<< DOU on 20 May '07 >> MPEC 2007-K28 - "06:08 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K07H15E 2007 HE15 (arc=26 days, H=19.6 ~407m) from Tiki Obs. (May 18.20-24p2)
- Observations of small asteroids (H>22.0)
- K07K00E 2007 KE (arc=4 days, H=22.5 ~107m) from Powell Obs. (May 19.21p3), Parma Obs. (May 19.96-98p3), and KLENOT (May 19.97p7)
- K07H15D 2007 HD15 (arc=27 days, H=24.0 ~54m) from the Spacewatch 1.8m telescope (May 19.39-40p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K07J02Y 2007 JY2 (arc=11 days, H=21.8 ~148m) from KLENOT (May 19.93p7)
- Observations of other objects
- K07J35J 2007 JJ35 (i=56.1°, arc=5 days, H=18.4 ~708m) from Powell Obs. (May 19.13p4)
- K07J22H 2007 JH22 (arc=8 days, H=21.7 ~155m) from Eschenberg Obs. (May 19.99-01p3)
- K07J20Z 2007 JZ20 (i=40.8°, arc=8 days, H=18.4 ~708m) from Petit Jean Mtn. South Obs. (PJMSO) (May 19.32-34p6)
- K07J02X 2007 JX2 (arc=11 days, H=19.4 ~446m) from KLENOT (May 19.85p6)
- K07G05Z 2007 GZ5 (arc=34 days, H=21.4 ~178m) from Astronomical Research Obs. (ARO) (May 19.10-11p3)
- K07F42V 2007 FV42 (arc=60 days, H=17.8 ~933m) from Greiner Research Obs. (May 19.32-33p7) and Eschenberg Obs. (May 19.89p7)
- K07F01L 2007 FL1 (arc=63 days, H=18.7 ~616m) from Greiner Research Obs. (May 19.34-35p8)
- K07F01K 2007 FK1 (arc=64 days, H=20.2 ~309m) from Greiner Research Obs. (May 19.30-32p10), Eschenberg Obs. (May 19.88p7), and Gelenau Obs. (May 19.94-95p4)
- K07F00A 2007 FA (arc=64 days, H=20.2 ~309m) from Powell Obs. (May 19.30p3)
- K07E88K 2007 EK88 (arc=66 days, H=21.6 ~162m) from ARO (May 19.26-27p4)
- K07D83B 2007 DB83 (arc=3 opp, H=18.3 ~741m) from the Catalina Sky Survey (CSS) (May 19.19-22p4), PJMSO (May 19.23p6), and Eschenberg Obs. (May 19.85p7)
- K06K89E 2006 KE89 (i=45.1°, q=0.211 AU, arc=3 opp, H=16.5 ~1.70 km) from Eschenberg Obs. (May 19.87-88p7) and Gelenau Obs. (May 19.91-92p3)
- K06G00B 2006 GB (arc=2 opp, H=20.4 ~282m) from Eschenberg Obs. (May 19.98-99p7)
- K05L03R 2005 LR3 (arc=3 opp, H=17.2 ~1.23 km) from PJMSO (May 19.31-32p5)
- K05B14G 2005 BG14 (arc=2 opp, H=18.6 ~645m) from ARO (May 19.25-26p3)
- K05A13D 2005 AD13 (arc=2 opp, H=17.9 ~891m) from Crni Vrh Obs. (May 19.01-03p4) and Eschenberg Obs. (May 19.91-92p7)
- K04E09V 2004 EV9 (i=40.9°, q=0.323 AU, arc=4 opp, H=17.8 ~933m) from Bergen-Enkheim Obs. (May 19.02-08p6) and ARO (May 19.36-37p2)
- K03H00B 2003 HB (arc=2 opp, H=19.7 ~389m) from Greiner Research Obs. (May 19.35-37p6) and CSS (May 19.42-44p4)
- K02K04F 2002 KF4 (i=37.2°, Q=4.571 AU, arc=3 opp, H=17.3 ~1.17 km) from Eschenberg Obs. (May 19.86p6) and Gelenau Obs. (May 19.87-88p5)
- K02G01H 2002 GH1 (Q=4.143 AU, arc=4 opp, H=15.6 ~2.57 km, q=1.245 AU) from ARO (May 19.33-35p3)
- K01SR6J 2001 SJ276 (arc=4 opp, H=18.6 ~645m) from ARO (May 19.12-13p3)
- K01J02V 2001 JV2 (i=47.5°, arc=3 opp, H=18.8 ~589m) from ARO (May 19.31-32p3)
- K00R77L 2000 RL77 (arc=4 opp, H=16.8 ~1.48 km) from ARO (May 19.29-32p3 at V=22.8-9)
- K00K00B 2000 KB (i=56.0°, Q=4.205 AU, arc=5 opp, H=16.2 ~1.95 km) from PJMSO (May 19.29-31p5)
- J98U01L 1998 UL1 (i=42.0°, arc=5 opp, H=16.6 ~1.62 km) from PJMSO (May 19.22p6) and Eschenberg Obs. (May 19.84p7)
- F4007 154007 2002 BY from PJMSO (May 19.23-24p4)
- F2895 152895 2000 CQ101 from PJMSO (May 19.27-28p5)
- E5656 145656 4788 P-L from PJMSO (May 19.27p5)
- 86829 86829 2000 GR146 from PJMSO (May 19.28p5)
- 22771 22771 1999 CU3 from CSS (May 19.15-17p4)
- 07977 7977 1977 QQ5 from CSS (May 19.45-47p4)
- 05626 5626 1991 FE from Spacewatch 1.8m (May 19.17-18p3)
- 04055 4055 Magellan (1985 DO2) from CSS (May 19.18-21p4)
- 01917 1917 Cuyo (1968 AA) from CSS (May 19.23-26p4)
MPEC 2007-K27 - "04:14 UT" - 1999 JR6 = 2007 JW2
- K07J02W 2007 JW2 from Parma Obs. (May 19.91-93p4) and KLENOT (May 19.94p5)
- J99J06R 1999 JR6 (H=18.1 ~812m)
MPEC 2007-K26 - "02:45 UT" - 2005 JA22
- K05J22A 2005 JA22 (H=18.3 ~741m) from Spacewatch 1.8m (March 15.50-51p2) and ARO (May 19.26-27p3)
Observers on 20 May '07
Thirteen observing facilities appeared in this day's MPECs.
| H55 | Astronomical Research Obs. in Illinois, 9 in MPECs 2007-K26 & 2007-K28 -- 2007 GZ5, 2007 EK88, 2005 BG14, 2004 EV9, 2002 GH1, 2001 SJ276, 2001 JV2, 2000 RL77, 2005 JA22 |
| A74 | Bergen-Enkheim Obs. in Germany, 1 in MPEC 2007-K28 -- 2004 EV9 |
| 703 | Catalina Sky Survey in Arizona, 6 in MPEC 2007-K28 -- 2007 DB83, 2003 HB, 22771, 7977, 4055, 1917 |
| 106 | Crni Vrh Obs. in Slovenia, 1 in MPEC 2007-K28 -- 2005 AD13 |
| 151 | Eschenberg Obs. in Switzerland, 9 in MPEC 2007-K28 -- 2007 JH22, 2007 FV42, 2007 FK1, 2007 DB83, 2006 KE89, 2006 GB, 2005 AD13, 2002 KF4, 1998 UL1 |
| B32 | Gelenau Obs. in Germany, 3 in MPEC 2007-K28 -- 2007 FK1, 2006 KE89, 2002 KF4 |
| H51 | Greiner Research Obs. in Wisconsin, 4 in MPEC 2007-K28 -- 2007 FV42, 2007 FL1, 2007 FK1, 2003 HB |
| 246 | KLENOT in the Czech Republic, 4 in MPECs 2007-K27 & 2007-K28 -- 2007 KE, 2007 JY2, 2007 JX2, 2007 JW2 |
| A56 | Parma Obs. in Italy, 2 in MPECs 2007-K27 & 2007-K28 -- 2007 KE, 2007 JW2 |
| H45 | Petit Jean Mtn. South Obs. in Arkansas, 9 in MPEC 2007-K28 -- 2007 JZ20, 2007 DB83, 2005 LR3, 2000 KB, 1998 UL1, 154007, 152895, 145656, 86829 |
| 649 | Powell Obs. in Kansas, 3 in MPEC 2007-K28 -- 2007 KE, 2007 JJ35, 2007 FA |
| 291 | Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2007-K26 & 2007-K28 -- 2007 HD15, 5626, 2005 JA22 |
| F85 | Tiki Obs. in Tahiti, 1 in MPEC 2007-K28 -- 2007 HE15 |
Impact Risk Monitoring on 20 May '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 HE15 | JPL | 1416 | R E M O V E D | JPL: Risk listing removed at 1129 UTC. | |||||
Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale
For a list of all risk-rated objects recently in view, see our ephemerides page.
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 all this.
Chronology on 20 May '07
Times are UTC for when the items were noted by Major News.
| 1416 | Noted that JPL has removed 2007 HE15 as an impact risk - see above Grabbed MPEC 2007-K28 - Daily Orbit Update - see above |
| 0421 | Grabbed MPEC 2007-K27 - 1999 JR6 = 2007 JW2 - see above |
| 0415 | Added link to news story, "Diamonds tell tale of comet that killed off the cavemen" |
| 0331 | Grabbed MPEC 2007-K26 - 2005 JA22 - see above |
