18 May '07 Major News

Contents on 18 May '07

Minor-Object News -- four items
Minor-Object Science -- none today
IAU Minor Planet Center
- NEOCP Activity -- five listings: 4 new, 1 updated
- New MPECs -- fifteen MPECs
- Observers -- 57 observing facilities
Impact Risk Monitoring -- two 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 18 May '07

Dawn news: The NASA Dawn mission's E-newsletter May edition, created May 10th, is available as a 51K PDF.
"Slicing the Universe with HARP/ACSIS," U.K. Science & Technology Facilities Council 17 May - Quote: "[HARP and ACSIS] have turned the JCMT into a sub-millimetre-wave 3-D camera rather than just a single-point telescope... For the first time, we can make large-scale maps of the warm gas in molecular clouds and so begin to understand in detail the complex and spectacular processes which occur when stars form."
"A Goofball Called Pluto," Bruce Moomaw at Space Daily 18 May - Quote: "So I suspect that in the end the IAU will finally have to beat another embarrassing retreat and fall back on the common-sense dividing line: call everything above a certain average diameter (and/or a certain average mass) a 'planet', and everything below that size a 'nonplanet'."
"Did asteroid wipe out America's first people?" Mongabay.com 17 May - Quote: "New evidence suggests extraterrestrial cause for disappearance of Clovis culture." - Note: The source states that "This article is based on a news release from the University of East Anglia."

Minor-Object Science on 18 May '07

No science papers were available or prepared today.

NEOCP Activity on 18 May '07

The MPC's NEO Confirmation Page has 5 listings: 4 new, 1 updated

When last checked at 2350 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 eight objects listed on the NEOCP at some point on this day.

New MPECs on 18 May '07

Minor Planet Electronic Circulars

There were fifteen MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-K07 time-stamped "06:07 UT" - Daily Orbit Update - see below
MPEC 2007-K08 time-stamped "14:51 UT" - Comet C/2006 OF2 (Broughton) - see below
MPEC 2007-K09 time-stamped "14:57 UT" - Comet C/2007 D1 (LINEAR) - see below
MPEC 2007-K10 time-stamped "15:02 UT" - Comet C/2007 D3 (LINEAR) - see below
MPEC 2007-K11 time-stamped "15:11 UT" - Comet C/2007 E1 (Garradd) - see below
MPEC 2007-K12 time-stamped "15:22 UT" - Comet C/2007 E2 (Lovejoy) - see below
MPEC 2007-K13 time-stamped "15:28 UT" - Comet C/2007 F1 (LONEOS) - see below
MPEC 2007-K14 time-stamped "15:32 UT" - Comet C/2007 G1 (LINEAR) - see below
MPEC 2007-K15 time-stamped "15:38 UT" - Comet C/2007 H2 (Skiff) - see below
MPEC 2007-K16 time-stamped "15:42 UT" - Comet P/2007 H3 (Garradd) - see below
MPEC 2007-K17 time-stamped "15:49 UT" - Comet C/2007 JA21 (LINEAR) - see below
MPEC 2007-K18 time-stamped "15:56 UT" - Observations of Comets - see below
MPEC 2007-K19 time-stamped "16:43 UT" - 2007 JE40 - see below
MPEC 2007-K20 time-stamped "16:46 UT" - 2007 KJ - see below
MPEC 2007-K21 time-stamped "16:49 UT" - 2007 KK

MPEC 2007-K21 - "16:49 UT" - 2007 KK

K07K00K 2007 KK (small asteroid, H=23.5 ~68m) was discovered at 0959 UT 16 May by the Mt. Lemmon Survey (MLS), which observed it at May 16.42-46p8. The discovery was confirmed by the Spacewatch 1.8m telescope (May 17.27-31p5 & 18.46p1), Jim Young via Table Mtn. Obs. (May 17.41-42p4), and Powell Obs. (May 18.19-21p4).

MPEC 2007-K20 - "16:46 UT" - 2007 KJ

K07K00J 2007 KJ (H=19.0 ~537m) was discovered at 0727 UT 16 May by MLS, which observed it at May 16.31-37p8 and 17.34-38p4. The discovery was confirmed by Young/Table Mtn. (May 17.23-25p4), Cordell-Lorenz Obs. (May 18.17-21p2), Spacewatch 1.8m (May 18.28p3), and Mt. John Obs. (May 18.49-50p4).

MPEC 2007-K19 - "16:43 UT" - 2007 JE40

K07J40E 2007 JE40 (H=20.2 ~309m) was discovered at 0806 UT 15 May by MLS, which observed it at May 15.34-42p11, 16.36-38p3, and 17.37-38p3. The discovery was confirmed by Young/Table Mtn. (May 15.39-41p4, 16.28-29p4 & 18.32-34p4), New Millennium Obs. (May 15.97-01p9), Grasslands Obs. (May 16.19-20p3), Farpoint Obs. (May 16.29p4), Remanzacco Obs. (May 16.84-88p5, 16.93p3, 17.01p1 & 17.05p1), Alter Satzberg Obs. (May 17.01-03p5), Cordell-Lorenz Obs. (May 17.31-38p4 & 18.29-36p3), Mt. John Obs. (May 17.64p3 & 18.56-57p3), Guidestar Obs. (May 17.91-93p3), Great Shefford Obs. (May 17.92-93p3), Farra d'Isonzo Obs. (May 17.97-98p3), Irmtraut Obs. (May 17.97-00p5), and Powell Obs. (May 18.12-13p5).

MPEC 2007-K18 - "15:56 UT" - Observations of Comets

PK06H30R P/2006 HR30 (Siding Spring) from Posadas Obs. (May 8.89-90p3 & 15.88-89p3), Four Winds Obs. (May 11.12-14p3), the Siding Spring Survey (SSS) (May 11.41p1), Vega del Thader Obs. (May 11.85-86p3), and Murcia Obs. (May 14.85-86p3)
CK07B020 C/2007 B2 (Skiff) from Vega del Thader Obs. (May 11.91p4), La Murta Obs. (May 11.96p3), and the Catalina Sky Survey (CSS) (May 13.18-20p4)
CK06X01A C/2006 XA1 (LINEAR) from Montcabre Obs. (May 12.87-88p3) and La Mata Obs. (May 15.86p3)
CK06V13Z C/2006 VZ13 (LINEAR) from Ageo Obs. (May 4.74p2 & 11.73p2), Montcabre Obs. (May 13.07-08p3), RAS Obs. Mayhill (May 13.44p2), and Piszkesteto Sta. (May 13.97p6)
CK06V010 C/2006 V1 (Catalina) from Kambah Obs. (May 11.46-47p2 & 12.50p2), Murcia Obs. (May 11.88-89p3), Posadas Obs. (May 11.91-94p3), La Puebla de Vallbona Obs. (Vallbona Obs.) (May 12.90-91p3), and Vicksburg Obs. (May 13.12-13p2)
CK06P010 C/2006 P1 (McNaught) from North Ryde Obs. (May 12.40-41p2 & 14.37-40p2)
CK06K040 C/2006 K4 (NEAT) from Kambah Obs. (May 11.69p2 & 12.65p2) and Ageo Obs. (May 11.77p3)
CK06H51W C/2006 HW51 (Siding Spring) from Cordell-Lorenz Obs. (May 13.37p1 & 17.38-40p3) and Piszkesteto Sta. (May 13.00p3)
CK05S040 C/2005 S4 (McNaught) from Jarnac Obs. (May 11.47-48p3), Ageo Obs. (May 11.70-71p3), and Piszkesteto Sta. (May 14.02-03p3)
CK05L030 C/2005 L3 (McNaught) from AAAA Buenos Aires Obs. (April 29.24-26p3), Ageo Obs. (May 7.68p3), LINEAR (May 10.34-38p5), Kambah Obs. (May 11.66p2), La Murta Obs. (May 11.98p3), Vicksburg Obs. (May 12.30-32p3), Carmelita Obs. (May 13.05-06p3), Piszkesteto Sta. (May 14.05-06p3), and Kiev Comet Station (Kiev) (May 14.99-00p6)
CK05E020 C/2005 E2 (McNaught) from Remanzacco Obs. (May 8.81p2), Vega del Thader Obs. (May 11.89p3), and CSS (May 16.17-19p4)
CK04B010 C/2004 B1 (LINEAR) from New Millennium Obs. (May 10.92-97p5, 12.93-00p8 & 15.93-03p9), Kitami Obs. (May 15.59-60p3), and Calarreona Obs. (May 15.88-89p3)
CK03W42T C/2003 WT42 (LINEAR) from New Millennium Obs. (May 10.85-89p6, 12.87-91p6 & 15.87-91p9), Murcia Obs. (May 11.91-92p3 & 14.91-93p3), Mataro Obs. (May 11.94-95p2), Vega del Thader Obs. (May 11.95p4), La Murta Obs. (May 11.97p3), Vicksburg Obs. (May 12.19-20p2 & 13.15-20p3), Chante-Perdrix Obs. (May 12.90-91p3), and Hamamatsu-Yuto Obs. (May 17.52p3)
CK02V94Q C/2002 VQ94 (LINEAR) from Kitami Obs. (May 8.53-56p3) and Torredembarra Obs. (May 10.94p1)
0186 186P/Garradd from SSS (March 23.63p1), El Leoncito Obs. (May 6.08-10p4), Kambah Obs. (May 11.52-53p2), and North Ryde Obs. (May 14.49-51p2)
0125 125P/Spacewatch from Goodricke-Pigott Obs. (March 12.23-26p3), Torredembarra Obs. (May 10.88-89p2), and CSS (May 11.19-21p4)
0099 99P/Kowal 1 from Tosa Obs. (May 8.49p1), Kambah Obs. (May 11.55-56p2), Torredembarra Obs. (May 12.95p3), Vallbona Obs. (May 12.95-96p3), Vicksburg Obs. (May 13.23-25p2), Ageo Obs. (May 13.65-66p2), LINEAR (May 14.29-32p3), and LONEOS (May 16.17-24p4)
0096 96P/Machholz 1 from Jarnac Obs. (May 11.47-49p4), Mataro Obs. (May 12.06-07p3), Murcia Obs. (May 12.12p3), Montcabre Obs. (May 13.06p3), Cordell-Lorenz Obs. (May 13.34-39p3), LINEAR (May 14.39-40p2), Kiev (May 15.02p2), and Chante-Perdrix Obs. (May 15.08p2)
0087 87P/Bus from New Millennium Obs. (May 10.84-88p5, 12.86-90p6 & 15.86-90p8) and LINEAR (May 13.20-24p4)
0017 17P/Holmes from RAS Mayhill (May 13.45p2 & 14.45-46p2)

MPEC 2007-K17 - "15:49 UT" - Comet C/2007 JA21 (LINEAR)

CK07J21A C/2007 JA21 (LINEAR) (i=89.8°, q=5.388 AU, TP=2006 Nov. 26.248 TT) from Table Mtn. Obs. (May 14.29-36p5), Piszkesteto Sta. (May 14.98p3), Montcabre Obs. (May 16.96-97p3), and CSS (May 18.41-43p4)

MPEC 2007-K16 - "15:42 UT" - Comet P/2007 H3 (Garradd)

PK07H030 P/2007 H3 (Garradd) (q=1.829 AU, Q=5.171 AU, TP=2007 Aug. 15.3444 TT) from Geisei Obs. (May 7.50-52p2), North Ryde Obs. (May 11.46-48p2 & 14.44-47p2), Kambah Obs. (May 11.49-50p2 & 12.52-53p2), and SSS (May 11.55-56p2)

MPEC 2007-K15 - "15:38 UT" - Comet C/2007 H2 (Skiff)

CK07H020 C/2007 H2 (Skiff) (i=52.2°, Q=101.773 AU, TP=2007 Feb. 17.0724 TT) from La Canada Obs. (May 11.89-90p3) and Cordell-Lorenz Obs. (May 18.14-17p2)

MPEC 2007-K14 - "15:32 UT" - Comet C/2007 G1 (LINEAR)

CK07G010 C/2007 G1 (LINEAR) (i=88.4°, q=2.646 AU, TP=2008 Nov. 16.8740 TT) from Vega del Thader Obs. (May 11.97p2), La Murta Obs. (May 11.99p3), San Marcello Pistoiese Obs. (May 12.04-06p4), Vicksburg Obs. (May 12.33-34p2), Frasso Sabino Obs. (May 12.93p2), New Millennium Obs. (May 13.01-08p7), Vallbona Obs. (May 13.02p3), Montcabre Obs. (May 13.04p3 & 16.93-94p3), Piszkesteto Sta. (May 13.94-95p3 & 14.99-00p4), Kiev (May 14.94-98p5), Chante-Perdrix Obs. (May 15.03-05p5), CSS (May 15.29-30p4), Kitami Obs. (May 15.65-66p3), and Carmelita Obs. (May 16.94-95p3)

MPEC 2007-K13 - "15:28 UT" - Comet C/2007 F1 (LONEOS)

CK07F010 C/2007 F1 (LONEOS) (i=116.1°, q=0.403 AU, TP=2007 Oct. 28.8430 TT) from San Marcello Pistoiese Obs. (May 11.85-87p5), Vega del Thader Obs. (May 11.93p3), Montcabre Obs. (May 12.93p2), and Kiev (May 14.90-92p3)

MPEC 2007-K12 - "15:22 UT" - Comet C/2007 E2 (Lovejoy)

CK07E020 C/2007 E2 (Lovejoy) (i=95.9°, q=1.093 AU, TP=2007 Mar. 27.5183 TT) from SSS (March 22.79p1), Mackay Obs. (May 7.14-19p19, 8.18-20p14, 9.96-97p10, 10.09p9, 10.98-99p11, 11.10-11p11, 16.99-01p10 & 17.13-14p5), Hamamatsu-Yuto Obs. (May 8.59-60p5, 11.58-60p5, 13.65-67p8, 14.60-61p3, 15.59-60p4 & 17.68-69p7), Posadas Obs. (May 9.01p3, 12.00-01p3 & 15.94-95p3), Four Winds Obs. (May 11.21-23p4 & 13.18-20p4), RAS Mayhill (May 11.42p2), Geisei Obs. (May 11.68-69p2), San Marcello Pistoiese Obs. (May 11.87-88p4), Montcabre Obs. (May 11.93-94p3, 12.98-99p3 & 16.90p3), Mataro Obs. (May 11.96p4), La Murta Obs. (May 11.99-00p3), Iluro Obs. (May 12.01-02p5), La Mata Obs. (May 12.09p3 & 15.89p3), Murcia Obs. (May 12.12p3, 12.98p3 & 14.94p3), Vicksburg Obs. (May 12.24-25p2), Calarreona Obs. (May 12.87-88p3 & 14.90p3), Frasso Sabino Obs. (May 12.88p8), Chante-Perdrix Obs. (May 12.92p3), Carmelita Obs. (May 12.96p3, 14.88p3 & 16.91p3), Torredembarra Obs. (May 12.96p3), Vallbona Obs. (May 12.96p3), New Millennium Obs. (May 13.01-08p8 & 16.04p2), Stammersdorf Obs. (May 13.02-04p3), Gualba Obs. (May 13.05-06p4), Cordell-Lorenz Obs. (May 13.20-30p5 & 17.27-37p5), Ageo Obs. (May 13.72p3), and Piszkesteto Sta. (May 13.95-96p3 & 15.01-02p6)

MPEC 2007-K11 - "15:11 UT" - Comet C/2007 E1 (Garradd)

CK07E010 C/2007 E1 (Garradd) (i=174.4°, Q=130.340 AU, TP=2007 May 23.8197 TT) from SSS (March 22.75p1 & April 8.49p1), Posadas Obs. (May 8.91-92p3), Four Winds Obs. (May 11.15-16p5 & 13.11-12p2), Geisei Obs. (May 11.46-47p2), Murcia Obs. (May 11.86p3 & 14.86p3), Vega del Thader Obs. (May 11.88-89p9), Mataro Obs. (May 11.90-91p2), Vallbona Obs. (May 12.85p3), Calarreona Obs. (May 12.85p3 & 15.87p3), Stammersdorf Obs. (May 12.85-87p3), Montcabre Obs. (May 12.86p3), Table Mtn. Obs. (May 16.15-16p4), and Mackay Obs. (May 16.89-90p4)

MPEC 2007-K10 - "15:02 UT" - Comet C/2007 D3 (LINEAR)

CK07D030 C/2007 D3 (LINEAR) (i=45.9°, q=5.209 AU, Q=1307.811 AU, TP=2007 May 27.72204 TT) from Kambah Obs. (April 7.47-48p2 & May 12.37-38p2)

MPEC 2007-K09 - "14:57 UT" - Comet C/2007 D1 (LINEAR)

CK07D010 C/2007 D1 (LINEAR) (i=41.4°, q=8.792 AU, TP=2007 June 21.19785 TT) from Kambah Obs. (May 11.45p2 & 12.43-44p2) and Table Mtn. Obs. (May 16.17-18p4)

MPEC 2007-K08 - "14:51 UT" - Comet C/2006 OF2 (Broughton)

CK06O02F C/2006 OF2 (Broughton) (i=30.2°, q=2.432 AU, TP=2008 Sept. 15.69699 TT) from Ageo Obs. (May 11.75p3), RAS Mayhill (May 13.41-43p2), and SSS (May 14.72-75p4)

<< DOU on 18 May '07 >> MPEC 2007-K07 - "06:07 UT" - Daily Orbit Update

Observations of risk-listed objects
K07J20Z 2007 JZ20 (i=40.9°, arc=7 days, H=18.3 ~741m) from Guidestar Obs. (May 17.94-95p3)
K07J16F 2007 JF16 (i=47.8°, arc=7 days, H=18.5 ~676m) from Spacewatch 1.8m (May 17.25p3)
Observations of small asteroids (H>22.0)
K07K00E 2007 KE (arc=2 days, H=22.5 ~107m) from Guidestar Obs. (May 17.88-89p3) and Irmtraut Obs. (May 17.92-94p4)
K07J21B 2007 JB21 (arc=6 days, H=25.4 ~28m) from Great Shefford Obs. (May 18.05-06p3)
Observations of other objects
K07J35J 2007 JJ35 (i=56.3°, arc=3 days, H=18.4 ~708m) from SSS (May 16.42p2, 16.50-51p2 & 16.70p2) and Great Shefford Obs. (May 17.89-90p3)
K07J22F 2007 JF22 (Q=5.652 AU, arc=6 days, H=16.2 ~1.95 km) from Great Shefford Obs. (May 17.91-92p3)
K07G05W 2007 GW5 (arc=33 days, H=21.5 ~170m) from Mt. John Obs. (May 17.45-47p4)
K07F42V 2007 FV42 (arc=58 days, H=17.7 ~977m) from Hamamatsu-Yuto Obs. (May 17.64-68p13)
K07F01K 2007 FK1 (arc=62 days, H=20.2 ~309m) from Hamamatsu-Yuto Obs. (May 17.60-64p15) and North Obs. (May 17.95p3)
K07D08K 2007 DK8 (arc=73 days, H=19.0 ~537m) from New Millennium Obs. (March 12.04-07p2)
K07B50B 2007 BB50 (Q=4.885 AU, arc=85 days, H=18.5 ~676m) from New Millennium Obs. (March 12.03p1)
K07B02T 2007 BT2 (arc=2 opp, H=17.2 ~1.23 km) from North Ryde Obs. (May 14.53-56p2)
K06U00M 2006 UM (arc=210 days, H=18.5 ~676m) from Astronomical Research Obs. (ARO) (May 15.11-12p3)
K06S06C 2006 SC6 (arc=3 opp, H=18.1 ~812m) from Spacewatch 1.8m (May 17.42-43p3)
K06K89E 2006 KE89 (i=45.1°, q=0.211 AU, arc=3 opp, H=16.5 ~1.70 km) from North Obs. (May 17.98p3)
K05L03R 2005 LR3 (arc=3 opp, H=17.2 ~1.23 km) from ARO (May 14.21-22p3 & 15.13-14p5)
K04S09T 2004 ST9 (arc=2 opp, H=18.0 ~851m) from ARO (May 14.26p2)
K04RG4W 2004 RW164 (i=36.8°, arc=3 opp, H=18.6 ~645m) from ARO (May 14.11p3)
K04L11Z 2004 LZ11 (arc=3 opp, H=19.3 ~467m) from the Sloan Digital Sky Survey (SDSS) (2001 Nov. 12.22p2)
K04F04U 2004 FU4 (arc=2 opp, H=18.5 ~676m) from Mt. John Obs. (May 17.71-72p3)
K03Y94Q 2003 YQ94 (Q=4.294 AU, arc=2 opp, H=17.8 ~933m) from Mt. John Obs. (May 17.50-54p6)
K03H00B 2003 HB (arc=2 opp, H=19.7 ~389m) from Spacewatch 1.8m (May 17.40-41p3)
J98U01L 1998 UL1 (i=42.0°, arc=5 opp, H=16.6 ~1.62 km) from Hamamatsu-Yuto Obs. (May 17.49-51p7) and North Obs. (May 17.96p3)
F4807 154807 2004 PP97 from New Millennium Obs. (March 12.14p1)
E5656 145656 4788 P-L from Hamamatsu-Yuto Obs. (May 17.55-57p3)
E1432 141432 2002 CQ11 from Goodricke-Pigott Obs. (March 13.27-29p3)
D8883 138883 2000 YL29 from New Millennium Obs. (March 12.08-10p2)
86829 86829 2000 GR146 from Hamamatsu-Yuto Obs. (May 17.57-60p6)
85953 85953 1999 FK21 from New Millennium Obs. (March 11.84-86p2)
04947 4947 Ninkasi (1988 TJ1) from CSS (May 17.37-39p4)

Observers on 18 May '07

A total of 57 observing facilities appeared in this day's MPECs.

`834`	AAAA Buenos Aires Obs. in Argentina, 1 in MPEC 2007-K18 -- C/2005 L3
`349`	Ageo Obs. in Japan, 7 in MPECs 2007-K08, 2007-K12 & 2007-K18 -- C/2006 VZ13, C/2006 K4, C/2005 S4, C/2005 L3, 99, C/2007 E2, C/2006 OF2
`B03`	Alter Satzberg Obs. in Austria, 1 in MPEC 2007-K19 -- 2007 JE40
`H55`	Astronomical Research Obs. in Illinois, 4 in MPEC 2007-K07 -- 2006 UM, 2005 LR3, 2004 ST9, 2004 RW164
`J79`	Calarreona Obs. in Spain, 3 in MPECs 2007-K11, 2007-K12 & 2007-K18 -- C/2004 B1, C/2007 E2, C/2007 E1
`B20`	Carmelita Obs. in Spain, 3 in MPECs 2007-K12, 2007-K14 & 2007-K18 -- C/2005 L3, C/2007 G1, C/2007 E2
`703`	Catalina Sky Survey in Arizona, 6 in MPECs 2007-K07, 2007-K14, 2007-K17 & 2007-K18 -- C/2007 B2, C/2005 E2, 125, C/2007 JA21, C/2007 G1, 4947
`A77`	Chante-Perdrix Obs. in France, 4 in MPECs 2007-K12, 2007-K14 & 2007-K18 -- C/2003 WT42, 96, C/2007 G1, C/2007 E2
`850`	Cordell-Lorenz Obs. in Tennessee, 6 in MPECs 2007-K12, 2007-K15, 2007-K18, 2007-K19 & 2007-K20 -- 2007 KJ, 2007 JE40, C/2006 HW51, 96, C/2007 H2, C/2007 E2
`808`	El Leoncito Obs. in Argentina, 1 in MPEC 2007-K18 -- 186
`734`	Farpoint Obs. in Kansas, 1 in MPEC 2007-K19 -- 2007 JE40
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-K19 -- 2007 JE40
`762`	Four Winds Obs. in Michigan, 3 in MPECs 2007-K11, 2007-K12 & 2007-K18 -- P/2006 HR30, C/2007 E2, C/2007 E1
`157`	Frasso Sabino Obs. in Italy, 2 in MPECs 2007-K12 & 2007-K14 -- C/2007 G1, C/2007 E2
`372`	Geisei Obs. in Japan, 3 in MPECs 2007-K11, 2007-K12 & 2007-K16 -- P/2007 H3, C/2007 E2, C/2007 E1
`683`	Goodricke-Pigott Obs. in Arizona, 2 in MPECs 2007-K07 & 2007-K18 -- 125, 141432
`651`	Grasslands Obs. in Arizona, 1 in MPEC 2007-K19 -- 2007 JE40
`J95`	Great Shefford Obs. in England, 4 in MPECs 2007-K07 & 2007-K19 -- 2007 JE40, 2007 JB21, 2007 JJ35, 2007 JF22
`442`	Gualba Obs. in Spain, 1 in MPEC 2007-K12 -- C/2007 E2
`A17`	Guidestar Obs. in Germany, 3 in MPECs 2007-K07 & 2007-K19 -- 2007 JE40, 2007 JZ20, 2007 KE
`379`	Hamamatsu-Yuto Obs. in Japan, 7 in MPECs 2007-K07, 2007-K12 & 2007-K18 -- C/2003 WT42, C/2007 E2, 2007 FV42, 2007 FK1, 1998 UL1, 145656, 86829
`B19`	Iluro Obs. in Spain, 1 in MPEC 2007-K12 -- C/2007 E2
`A21`	Irmtraut Obs. in Germany, 2 in MPECs 2007-K07 & 2007-K19 -- 2007 JE40, 2007 KE
`G92`	Jarnac Obs. in Arizona, 2 in MPEC 2007-K18 -- C/2005 S4, 96
`415`	Kambah Obs. in Australia, 8 in MPECs 2007-K09, 2007-K10, 2007-K16 & 2007-K18 -- C/2006 V1, C/2006 K4, C/2005 L3, 186, 99, P/2007 H3, C/2007 D3, C/2007 D1
`585`	Kiev Comet Station in the Ukraine, 4 in MPECs 2007-K13, 2007-K14 & 2007-K18 -- C/2005 L3, 96, C/2007 G1, C/2007 F1
`400`	Kitami Obs. in Japan, 3 in MPECs 2007-K14 & 2007-K18 -- C/2004 B1, C/2002 VQ94, C/2007 G1
`704`	LINEAR in New Mexico, 4 in MPEC 2007-K18 -- C/2005 L3, 99, 96, 87
`699`	LONEOS in Arizona, 1 in MPEC 2007-K18 -- 99
`J87`	La Canada Obs. in Spain, 1 in MPEC 2007-K15 -- C/2007 H2
`J64`	La Mata Obs. in Spain, 2 in MPECs 2007-K12 & 2007-K18 -- C/2006 XA1, C/2007 E2
`J76`	La Murta Obs. in Spain, 5 in MPECs 2007-K12, 2007-K14 & 2007-K18 -- C/2007 B2, C/2005 L3, C/2003 WT42, C/2007 G1, C/2007 E2
`J67`	La Puebla de Vallbona Obs. in Spain, 5 in MPECs 2007-K11, 2007-K12, 2007-K14 & 2007-K18 -- C/2006 V1, 99, C/2007 G1, C/2007 E2, C/2007 E1
`J48`	Mackay Obs. in the Canary Islands, 2 in MPECs 2007-K11 & 2007-K12 -- C/2007 E2, C/2007 E1
`A06`	Mataro Obs. in Spain, 4 in MPECs 2007-K11, 2007-K12 & 2007-K18 -- C/2003 WT42, 96, C/2007 E2, C/2007 E1
`213`	Montcabre Obs. in Spain, 8 in MPECs 2007-K11, 2007-K12, 2007-K13, 2007-K14, 2007-K17 & 2007-K18 -- C/2006 XA1, C/2006 VZ13, 96, C/2007 JA21, C/2007 G1, C/2007 F1, C/2007 E2, C/2007 E1
`474`	Mt. John Obs. in New Zealand, 5 in MPECs 2007-K07, 2007-K19 & 2007-K20 -- 2007 KJ, 2007 JE40, 2007 GW5, 2004 FU4, 2003 YQ94
`G96`	Mt. Lemmon Survey in Arizona, 3 in MPECs 2007-K19, 2007-K20 & 2007-K21 -- 2007 KK, 2007 KJ, 2007 JE40
`J78`	Murcia Obs. in Spain, 6 in MPECs 2007-K11, 2007-K12 & 2007-K18 -- P/2006 HR30, C/2006 V1, C/2003 WT42, 96, C/2007 E2, C/2007 E1
`A24`	New Millennium Obs. in Italy, 11 in MPECs 2007-K07, 2007-K12, 2007-K14, 2007-K18 & 2007-K19 -- 2007 JE40, C/2004 B1, C/2003 WT42, 87, C/2007 G1, C/2007 E2, 2007 DK8, 2007 BB50, 154807, 138883, 85953
`J69`	North Obs. in England, 3 in MPEC 2007-K07 -- 2007 FK1, 2006 KE89, 1998 UL1
`423`	North Ryde Obs. in New South Wales, 4 in MPECs 2007-K07, 2007-K16 & 2007-K18 -- C/2006 P1, 186, P/2007 H3, 2007 BT2
`561`	Piszkesteto Sta. in Hungary, 7 in MPECs 2007-K12, 2007-K14, 2007-K17 & 2007-K18 -- C/2006 VZ13, C/2006 HW51, C/2005 S4, C/2005 L3, C/2007 JA21, C/2007 G1, C/2007 E2
`J53`	Posadas Obs. in Spain, 4 in MPECs 2007-K11, 2007-K12 & 2007-K18 -- P/2006 HR30, C/2006 V1, C/2007 E2, C/2007 E1
`649`	Powell Obs. in Kansas, 2 in MPECs 2007-K19 & 2007-K21 -- 2007 KK, 2007 JE40
`H06`	RAS Obs. Mayhill in New Mexico, 4 in MPECs 2007-K08, 2007-K12 & 2007-K18 -- C/2006 VZ13, 17, C/2007 E2, C/2006 OF2
`473`	Remanzacco Obs. in Italy, 2 in MPECs 2007-K18 & 2007-K19 -- 2007 JE40, C/2005 E2
`104`	San Marcello Pistoiese Obs. in Italy, 3 in MPECs 2007-K12, 2007-K13 & 2007-K14 -- C/2007 G1, C/2007 F1, C/2007 E2
`E12`	Siding Spring Survey in New South Wales, 7 in MPECs 2007-K07, 2007-K08, 2007-K11, 2007-K12, 2007-K16 & 2007-K18 -- P/2006 HR30, 186, P/2007 H3, C/2007 E2, C/2007 E1, C/2006 OF2, 2007 JJ35
`645`	Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2007-K07 -- 2004 LZ11
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2007-K07, 2007-K20 & 2007-K21 -- 2007 KK, 2007 KJ, 2007 JF16, 2006 SC6, 2003 HB
`A97`	Stammersdorf Obs. in Austria, 2 in MPECs 2007-K11 & 2007-K12 -- C/2007 E2, C/2007 E1
`673`	Table Mtn. Obs. in southern California, 3 in MPECs 2007-K09, 2007-K11 & 2007-K17 -- C/2007 JA21, C/2007 E1, C/2007 D1
`6735`	Jim Young via Table Mtn. Obs. in southern California, 3 in MPECs 2007-K19, 2007-K20 & 2007-K21 -- 2007 KK, 2007 KJ, 2007 JE40
`A03`	Torredembarra Obs., 4 in MPECs 2007-K12 & 2007-K18 -- C/2002 VQ94, 125, 99, C/2007 E2
`D70`	Tosa Obs., 1 in MPEC 2007-K18 -- 99
`J70`	Vega del Thader Obs. in Spain, 7 in MPECs 2007-K11, 2007-K13, 2007-K14 & 2007-K18 -- P/2006 HR30, C/2007 B2, C/2005 E2, C/2003 WT42, C/2007 G1, C/2007 F1, C/2007 E1
`H47`	Vicksburg Obs. in Mississippi, 6 in MPECs 2007-K12, 2007-K14 & 2007-K18 -- C/2006 V1, C/2005 L3, C/2003 WT42, 99, C/2007 G1, C/2007 E2

Impact Risk Monitoring on 18 May '07

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2350 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	NEODyS	1327	2045-2078	12	1.28e-08	-4.16	-4.46	0	NEODyS: "Based on 55 optical observations (of which 2 are rejected as outliers) from 2007/05/11.287 to 2007/05/17.955."
2007 JZ20	JPL	1326	2045-2103	13	1.3e-07	-3.23	-3.58	0	JPL: "Analysis based on 55 observations spanning 6.6673 days (2007-May-11.28648 to 2007-May-17.95382)." Diameter approximately 0.830 km. from mean, weighted H=18.0.

2007 JF16	NEODyS	1326	R E M O V E D

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 18 May '07

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

1916	Added news report, "Dawn news"
1909	Added link to news story, "Slicing the Universe with HARP/ACSIS"
1731	Grabbed MPEC 2007-K09 - Comet C/2007 D1 (LINEAR) - see above Grabbed MPEC 2007-K10 - Comet C/2007 D3 (LINEAR) - see above Grabbed MPEC 2007-K11 - Comet C/2007 E1 (Garradd) - see above Grabbed MPEC 2007-K12 - Comet C/2007 E2 (Lovejoy) - see above Grabbed MPEC 2007-K13 - Comet C/2007 F1 (LONEOS) - see above Grabbed MPEC 2007-K14 - Comet C/2007 G1 (LINEAR) - see above Grabbed MPEC 2007-K15 - Comet C/2007 H2 (Skiff) - see above Grabbed MPEC 2007-K16 - Comet P/2007 H3 (Garradd) - see above Grabbed MPEC 2007-K17 - Comet C/2007 JA21 (LINEAR) - see above Grabbed MPEC 2007-K18 - Observations of Comets - see above Grabbed MPEC 2007-K19 - 2007 JE40 - see above Grabbed MPEC 2007-K20 - 2007 KJ - see above Grabbed MPEC 2007-K21 - 2007 KK - see above
1458	Grabbed MPEC 2007-K08 - Comet C/2006 OF2 (Broughton) - see above Added link to news story, "A Goofball Called Pluto"
1446	Added link to news story, "Did asteroid wipe out America's first people?"
1327	Noted that NEODyS has updated its 2007 JZ20 risk assessment - see above Grabbed MPEC 2007-K07 - Daily Orbit Update - see above
1326	Noted that NEODyS has removed 2007 JF16 as an impact risk - see above Noted that JPL has updated its 2007 JZ20 risk assessment - see above

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