16 May '07 Major News

Contents on 16 May '07

Minor-Object News -- one item
Minor-Object Science -- none today
IAU Minor Planet Center
- NEOCP Activity -- eight listings: 4 new, 4 updated
- New MPECs -- one MPEC
- Observers -- sixteen observing facilities
Impact Risk Monitoring -- four objects 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 16 May '07

"Gusts of 120kmh rattle South Island," Stuff.co.nz 17 May - Quote: "Mount John Observatory ... superintendent Alan Gilmore said the wind arrived about 2am, gusting up to 120kmh [yesterday]. On Monday, observatory staff recorded a gust of 156kmh."

Minor-Object Science on 16 May '07

No science papers were available or prepared today.

NEOCP Activity on 16 May '07

The MPC's NEO Confirmation Page has 8 listings: 4 new, 4 updated

When last checked at 2351 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and four updated listings. Of these, four were "one nighters."

New MPECs on 16 May '07

Minor Planet Electronic Circulars

There was one MPEC issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 16 May '07 >> MPEC 2007-K01 - "06:08 UT" - Daily Orbit Update

Observations of risk-listed objects
K07J20Z 2007 JZ20 (i=42.6°, arc=4 days, H=18.2 ~776m) from Petit Jean Mtn. South Obs. (PJMSO) (May 15.36-38p8)
K07J02Y 2007 JY2 (almost small, arc=7 days, H=21.8 ~148m) from the Spacewatch 1.8m telescope (May 15.28-31p3) and Farpoint Obs. (May 16.21-22p4)
Observations of small asteroids (H>22.0)
K07H44H 2007 HH44 (arc=15 days, H=25.0 ~34m) from Andrea Boattini via La Silla (April 27.27-28p4)
K07H15D 2007 HD15 (arc=23 days, H=24.0 ~54m) from Astronomical Research Obs. (ARO) (May 15.18-21p3 at V=22.6-8)
K07F01J 2007 FJ1 (arc=59 days, H=23.8 ~59m) from ARO (May 15.15-17p3)
Observations of other objects
K07J35J 2007 JJ35 (i=54.1°, arc=1 day, H=18.4 ~708m) from Jim Young via Table Mtn. Obs. (May 15.27-29p4) and the Siding Spring Survey (SSS) (May 15.37-38p2)
K07J22H 2007 JH22 (arc=3 days, H=21.5 ~170m) from the Catalina Sky Survey (CSS) (May 15.29-34p7)
K07J22F 2007 JF22 from LINEAR (May 14.14-18p4)
K07H44G 2007 HG44 (Q=4.232 AU, arc=21 days, H=19.2 ~490m) from ARO (May 15.09-10p2)
K07H44F 2007 HF44 (arc=6 days, H=19.2 ~490m) from Boattini (April 27.27p4)
K07H00B 2007 HB (arc=29 days, H=19.7 ~389m) from PJMSO (May 15.34-35p5)
K07F42V 2007 FV42 (arc=56 days, H=17.7 ~977m) from Hamamatsu-Yuto Obs. (May 15.62-65p6)
K07E88P 2007 EP88 (q=0.096 AU, arc=61 days, H=18.5 ~676m) from Spacewatch 1.8m (May 15.17-18p2)
K07E00Z 2007 EZ (arc=66 days, H=19.8 ~371m) from ARO (May 15.11-12p5)
K06V02W 2006 VW2 (arc=2 opp, H=21.2 ~195m) from Spacewatch 1.8m (May 15.45-46p3)
K06K89E 2006 KE89 (i=45.1°, q=0.211 AU, arc=3 opp, H=16.5 ~1.70 km) from CSS (May 15.31-33p4)
K05L08G 2005 LG8 (q=0.303 AU, arc=3 opp, H=16.9 ~1.41 km) from the Spacewatch 0.9m telescope (May 13.18-21p3)
K05L03R 2005 LR3 (arc=3 opp, H=17.2 ~1.23 km) from PJMSO (May 15.32p6)
K03R07X 2003 RX7 (arc=3 opp, H=18.4 ~708m) from Spacewatch 1.8m (May 15.46-47p3 at V=22.2)
K03E50B 2003 EB50 (arc=5 opp, H=16.6 ~1.62 km) from the Mt. Lemmon Survey (MLS) (May 15.19-21p4)
K02K04F 2002 KF4 (i=37.2°, Q=4.571 AU, arc=3 opp, H=17.3 ~1.17 km) from PJMSO (May 15.35-36p4)
K00W67O 2000 WO67 (arc=4 opp, H=16.4 ~1.78 km) from ARO (May 15.13-14p5)
K00D08J 2000 DJ8 (i=37.7°, arc=4 opp, H=17.9 ~891m) from Bergen-Enkheim Obs. (May 15.91-95p6)
J98U01L 1998 UL1 (i=42.0°, arc=5 opp, H=16.6 ~1.62 km) from Hamamatsu-Yuto Obs. (May 15.49-50p3)
J93G00D 1993 GD (arc=4 opp, H=20.8 ~234m) from MLS (May 15.34-36p4)
E5656 145656 4788 P-L from Mill Creek Obs. (May 14.20-21p7) and PJMSO (May 15.27-28p5)
D6874 136874 1998 FH74 from Piszkesteto Sta. (May 14.95p3) and MLS (May 15.37-39p4)
89958 89958 2002 LY45 from Spacewatch 0.9m (May 12.17-18p2)
86829 86829 2000 GR146 from Modra Obs. (May 12.94-95p4 & 14.87p3), PJMSO (May 15.30-31p5), and Hamamatsu-Yuto Obs. (May 15.51-54p5)
54660 54660 2000 UJ1 from MLS (May 15.31-32p4) and PJMSO (May 15.33p4)
39796 39796 1997 TD from PJMSO (May 15.31-32p5)

Observers on 16 May '07

Sixteen observing facilities appeared in this day's MPECs.

`H55`	Astronomical Research Obs. in Illinois, 5 in MPEC 2007-K01 -- 2007 HD15, 2007 FJ1, 2007 HG44, 2007 EZ, 2000 WO67
`A74`	Bergen-Enkheim Obs. in Germany, 1 in MPEC 2007-K01 -- 2000 DJ8
`703`	Catalina Sky Survey in Arizona, 2 in MPEC 2007-K01 -- 2007 JH22, 2006 KE89
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2007-K01 -- 2007 JY2
`379`	Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2007-K01 -- 2007 FV42, 1998 UL1, 86829
`704`	LINEAR in New Mexico, 1 in MPEC 2007-K01 -- 2007 JF22
`8099`	Andrea Boattini via La Silla in Chile, 2 in MPEC 2007-K01 -- 2007 HH44, 2007 HF44
`G63`	Mill Creek Obs. in Oregon, 1 in MPEC 2007-K01 -- 145656
`118`	Modra Obs. in Slovakia, 1 in MPEC 2007-K01 -- 86829
`G96`	Mt. Lemmon Survey in Arizona, 4 in MPEC 2007-K01 -- 2003 EB50, 1993 GD, 136874, 54660
`H45`	Petit Jean Mtn. South Obs. in Arkansas, 8 in MPEC 2007-K01 -- 2007 JZ20, 2007 HB, 2005 LR3, 2002 KF4, 145656, 86829, 54660, 39796
`561`	Piszkesteto Sta. in Hungary, 1 in MPEC 2007-K01 -- 136874
`E12`	Siding Spring Survey in New South Wales, 1 in MPEC 2007-K01 -- 2007 JJ35
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2007-K01 -- 2005 LG8, 89958
`291`	Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2007-K01 -- 2007 JY2, 2007 EP88, 2006 VW2, 2003 RX7
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2007-K01 -- 2007 JJ35

Impact Risk Monitoring on 16 May '07

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2351 UTC)
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2080.
For the latest official risk assessments, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
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 JZ20	JPL	2216	2030-2104	39	4.1e-07	-2.58	-3.06	0	JPL: "Analysis based on 47 observations spanning 4.0913 days (2007-May-11.28648 to 2007-May-15.37777)." Diameter approximately 0.851 km. from mean, weighted H=18.0.
2007 JZ20	NEODyS	1400	2030-2080	28	1.69e-07	-2.94	-3.43	0	NEODyS: "Based on 47 optical observations (of which 1 are rejected as outliers) from 2007/05/11.287 to 2007/05/15.379."

2007 JY2	JPL	2003	R E M O V E D						JPL: Risk listing removed at 1948 UTC.

2007 JF16	JPL	1924	2014-2101	37	7.0e-08	-4.96	-5.63	0	JPL: "Analysis based on 14 observations spanning 1.9520 days (2007-May-10.3675 to 2007-May-12.31954)." Diameter approximately 0.232 km. from mean, weighted H=20.8.

2007 HE15	JPL	2216	2102	1	1.8e-09	-6.57	-6.57	0	JPL: "Analysis based on 24 observations spanning 19.985 days (2007-Apr-22.51299 to 2007-May-12.49826)." Diameter approximately 0.380 km. from mean, weighted H=19.7.

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 16 May '07

Times are UTC for when the items were noted by Major News.

2216	Noted that JPL has updated its 2007 HE15 risk assessment - see above Noted that JPL has posted 2007 JZ20 as an impact risk
2003	Noted that JPL has removed 2007 JY2 as an impact risk - see above
1924	Noted that JPL has posted 2007 JF16 as an impact risk - see above
1922	Added link to news story, "Gusts of 120kmh rattle South Island"
1400	Noted that NEODyS has updated its 2007 JZ20 risk assessment - see above Grabbed MPEC 2007-K01 - Daily Orbit Update - see above

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