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Contents  on 28 April '08

• IAU Minor Planet Center
  • NEOCP Activity -- four listings: 1 new, 3 updated
  • New MPECs -- fourteen MPECs
• Observers -- 24 observing facilities
• Impact Risk Monitoring -- one object
• 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

NOTE: The Tracking News and this Web site will be updating less often, and at sometimes irregular intervals, for the rest of April.

The latest A/CC news is available via framed access,  RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

NEOCP Activity  on 28 April '08

The MPC's NEO Confirmation Page has 4 listings: 1 new, 3 updated

When last checked at 2355 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and three updated listings. All of these were "one nighters." The Tracking News counted a total of fifteen objects listed on the NEOCP at some point on this day.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

New MPECs  on 28 April '08

Minor Planet Electronic Circulars

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

• MPEC 2008-H34 time-stamped "06:06 UT" - Daily Orbit Update - see below
• MPEC 2008-H35 time-stamped "18:44 UT" - 2008 HW1 - see below
• MPEC 2008-H36 time-stamped "18:51 UT" - 2008 HX1 - see below
• MPEC 2008-H37 time-stamped "18:54 UT" - 2008 HY1 - see below
• MPEC 2008-H38 time-stamped "18:57 UT" - 2008 HZ1 - see below
• MPEC 2008-H39 time-stamped "19:02 UT" - 2008 HA2 - see below
• MPEC 2008-H40 time-stamped "19:05 UT" - 2008 HB2 - see below
• MPEC 2008-H41 time-stamped "19:08 UT" - 2008 HC2 - see below
• MPEC 2008-H42 time-stamped "19:11 UT" - 2008 HD2 - see below
• MPEC 2008-H43 time-stamped "19:14 UT" - 2008 HD2 - see below
• MPEC 2008-H44 time-stamped "19:17 UT" - 2008 HE2 - see below
• MPEC 2008-H45 time-stamped "19:21 UT" - 2008 HF2 - see below
• MPEC 2008-H46 time-stamped "23:49 UT" - 2008 GE128 - see below
• MPEC 2008-H47 time-stamped "23:54 UT" - 2008 HD3

MPEC 2008-H47 - "23:54 UT" - 2008 HD3

• K08H03D   2008 HD3 (i=64.5°, H=19.6 ~407m) was discovered at 0620 UT on 28 April by the Spacewatch 0.9m telescope, which observed it at April 28.26-30p3. The discovery was confirmed by the Spacewatch 1.8m telescope (April 28.36-37p2 & 28.46-47p3), Sabino Canyon Obs. (April 28.37-38p3), and Magdalena Ridge Obs. (MRO) (April 28.39p3).

MPEC 2008-H46 - "23:49 UT" - 2008 GE128

• K08GC8E   2008 GE128 (small asteroid, Earth MOID=1.6 LD, H=25.8 ~23m) was discovered at 1104 UT on 14 April by the Mt. Lemmon Survey (MLS), which observed it at April 14.46-48p4, 15.47-48p4, and 16.37-38p4.

MPEC 2008-H45 - "19:21 UT" - 2008 HF2

• K08H02F   2008 HF2 (H=19.7 ~389m) was discovered at 0900 UT on 27 April by Spacewatch 0.9m, which observed it at April 27.38-41p3. The discovery was confirmed by Spacewatch 1.8m (April 27.46-47p3, 28.28p3 & 28.45p3), Farpoint Obs. (April 28.30-31p3), MRO (April 28.40-41p4), and Sabino Canyon Obs. (April 28.41p2).

MPEC 2008-H44 - "19:17 UT" - 2008 HE2

• K08H02E   2008 HE2 (small asteroid, H=23.5 ~68m) was discovered at 0723 UT on 27 April by MLS, which observed it at April 27.31-38p8 and 28.29-31p4. The discovery was confirmed by Sabino Canyon Obs. (April 27.36-37p3), Astronomical Research Obs. (ARO) (April 27.37-39p3), Alter Satzberg Obs. (April 27.84-87p3), and Farra d'Isonzo Obs. (April 27.86-90p2).

MPEC 2008-H43 - "19:14 UT" - 2008 HD2

• K08H02D   2008 HD2 (small asteroid, Earth MOID=2.6 LD, H=25.0 ~34m) was discovered at 0642 UT on 27 April by MLS, which observed it at April 27.28-34p8 and 28.22-24p4. This object will be coming within ten lunar distances (LD) of Earth, reaching 6.8 LD on 9 May.

MPEC 2008-H42 - "19:11 UT" - 2008 HD2

• K08H02D   2008 HD2 (small asteroid, Earth MOID=2.6 LD, H=25.0 ~34m) was discovered at 0642 UT on 27 April by MLS, which observed it at April 27.28-34p8 and 28.22-24p4. This object will be coming within ten lunar distances (LD) of Earth, reaching 6.8 LD on 9 May.

MPEC 2008-H41 - "19:08 UT" - 2008 HC2

• K08H02C   2008 HC2 (H=20.8 ~234m) was discovered at 0641 UT on 27 April by MLS, which observed it at April 27.28-33p8 and 28.22-23p2. The discovery was confirmed by Farpoint Obs. (April 28.27-28p3).

MPEC 2008-H40 - "19:05 UT" - 2008 HB2

• K08H02B   2008 HB2 (small asteroid, H=25.5 ~27m) was discovered at 0444 UT on 27 April by MLS, which observed it at April 27.20-21p4, 27.27-28p3, and 28.21-22p4. The discovery was confirmed by Farpoint Obs. (April 28.24-25p5).

MPEC 2008-H39 - "19:02 UT" - 2008 HA2

• K08H02A   2008 HA2 (small asteroid, H=24.4 ~45m) was discovered at 0818 UT on 26 April by MLS, which observed it at April 26.35-38p11, 27.26-32p7, and 28.29-31p4. The discovery was confirmed by MRO (April 28.29-32p4).

MPEC 2008-H38 - "18:57 UT" - 2008 HZ1

• K08H01Z   2008 HZ1 (H=19.9 ~355m) was discovered at 0812 UT on 26 April by MLS, which observed it at April 26.34-36p4 and 26.41p4. The discovery was confirmed by Gaisberg Obs. (April 26.88-89p5), ARO (April 27.18-20p3), Spacewatch 1.8m (April 27.22p2 & 28.23-24p3), and Kanab Obs. (April 27.33-35p2).

MPEC 2008-H37 - "18:54 UT" - 2008 HY1

• K08H01Y   2008 HY1 (small asteroid, H=23.7 ~62m) was discovered at 0712 UT on 26 April by MLS, which observed it at April 26.30-38p10 at V=20.3-22.2 and 27.25-27p4 at V=20.8-21.2. The discovery was confirmed by Spacewatch 1.8m (April 28.22-23p2).

MPEC 2008-H36 - "18:51 UT" - 2008 HX1

• K08H01X   2008 HX1 (small asteroid, Earth MOID=4.9 LD, H=23.7 ~62m) was discovered at 0515 UT on 26 April by MLS, which observed it at April 26.22-27p8 at V=20.8-22.1, 27.19p4 at V=20.2-20.9, and 28.16-17p4 at V=20.9-21.3. The discovery was confirmed by Farpoint Obs. (April 28.18-20p3).

MPEC 2008-H35 - "18:44 UT" - 2008 HW1

• K08H01W   2008 HW1 (q=0.102 AU, Q=5.068 AU, H=17.4 ~1.12 km) was discovered at 0825 UT on 25 April by LINEAR, which observed it at April 25.35-39p5. The discovery was confirmed by the Catalina Sky Survey (CSS) (March 30.47-49p4 & April 14.43-44p3), Wildberg Obs. (April 26.97-98p4), Eschenberg Obs. (April 27.00-02p10), Farra d'Isonzo Obs. (April 27.01-02p2), Modra Obs. (April 27.07-08p5), Alter Satzberg Obs. (April 27.08-10p5), ARO (April 27.22-25p6), Sabino Canyon Obs. (April 27.26-27p3), Cristovao Jacques via RAS Obs. Mayhill (April 27.26-27p3), Rolando Ligustri via RAS Obs. Mayhill (April 27.27-29p2), MLS (April 27.41-43p4), Tiki Obs. (April 27.49-53p3), Remanzacco Obs. (April 27.98-00p2), Farpoint Obs. (April 28.34-35p3), and Moriyama Obs. (April 28.69p1).

<< DOU on 28 Apr. '08 >>  MPEC 2008-H34 - "06:06 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K08H00J   2008 HJ (small asteroid, arc=3 days, H=25.7 ~25m) from ARO (April 27.21p3) and MLS (April 27.34-36p3)
• Observations of recently (no longer) risk-listed objects
• K08H00H   2008 HH (almost small, arc=3 days, H=22.0 ~135m) from ARO (April 27.20-22p3) and Spacewatch 1.8m (April 27.28-29p3)
• K08H00G   2008 HG (small asteroid, arc=4 days, H=23.6 ~65m) from Tiki Obs. (April 27.44-49p3) and Capannoli Obs. (April 27.96-97p3)
• K08GB0A   2008 GA110 (almost small, Q=4.485 AU, arc=13 days, H=22.0 ~135m) from MLS (April 27.34-36p8)
• K08G21B   2008 GB21 (small asteroid, arc=15 days, H=25.9 ~22m) from Spacewatch 1.8m (April 27.23-24p3)
• K08G20O   2008 GO20 (small asteroid, arc=18 days, H=22.3 ~117m) from MLS (April 27.22-25p4)
• K08F06W   2008 FW6 (arc=28 days, H=21.0 ~214m) from Spacewatch 1.8m (April 27.35-36p3)
• K08F05W   2008 FW5 (almost small, arc=30 days, H=21.8 ~148m) from Spacewatch 1.8m (April 27.33p3)
• Observations of small asteroids (H>22.0)
• K08H00K   2008 HK (arc=2 days, H=22.2 ~123m) from MLS (April 27.19-21p4) and Tiki Obs. (April 27.35-38p2)
• K08GB0C   2008 GC110 (arc=13 days, H=22.3 ~117m) from Spacewatch 1.8m (April 27.26-27p3)
• K08G03U   2008 GU3 (arc=20 days, H=22.4 ~112m) from Spacewatch 1.8m (April 27.40-41p2)
• Observations of other objects
• K08G04A   2008 GA4 (arc=19 days, H=19.3 ~467m) from Spacewatch 1.8m (April 27.19-20p3)
• K08G03V   2008 GV3 (i=72.9°, arc=21 days, H=18.5 ~676m) from Capannoli Obs. (April 27.92-93p2)
• K08F06N   2008 FN6 (arc=28 days, H=21.3 ~186m) from Redshed Obs. (April 26.94-96p3) and MLS (April 27.34-36p4)
• K08C23P   2008 CP23 (arc=86 days, H=19.5 ~426m) from LINEAR (April 26.19-24p4)
• K07V07Y   2007 VY7 (arc=3 opp, H=19.5 ~426m) from Spacewatch 0.9m (April 27.20-24p3)
• K07V04Q   2007 VQ4 (arc=3 opp, H=15.9 ~2.24 km, q=1.271 AU) from Madonna di Dossobuono Obs. (April 27.87p3)
• K07P25H   2007 PH25 (i=53.2°, Q=4.604 AU, arc=2 opp, H=16.6 ~1.62 km) from Spacewatch 1.8m (April 27.41-43p3)
• K07P06P   2007 PP6 (q=0.361 AU, arc=2 opp, H=17.2 ~1.23 km) from Spacewatch 1.8m (April 27.38-39p3)
• K07M00R   2007 MR (arc=2 opp, H=21.7 ~155m) from Spacewatch 1.8m (April 27.27-28p3)
• K05S25M   2005 SM25 (arc=2 opp, H=19.5 ~426m) from Spacewatch 1.8m (April 27.30-31p2)
• K05J00B   2005 JB (i=36.7°, arc=3 opp, H=18.9 ~562m) from Spacewatch 1.8m (April 27.45p2)
• K04F32N   2004 FN32 (arc=4 opp, H=19.0 ~537m) from Capannoli Obs. (April 27.90-91p2)
• K04C02R   2004 CR2 (arc=2 opp, H=19.2 ~490m) from Madonna di Dossobuono Obs. (April 5.89p3 & 27.83-84p3)
• K03G00W   2003 GW (i=49.4°, arc=3 opp, H=16.7 ~1.55 km) from Madonna di Dossobuono Obs. (April 27.82p3)
• J94A01W   1994 AW1 (arc=3 opp, H=17.6 ~1.02 km) from Boambee Obs. (April 26.37-40p3 & 27.35-37p3)
• H0891   170891 2004 TY16 from CSS (April 27.19-22p4)
• G2173   162173 1999 JU3 from CSS (April 27.16-19p4)
• E4922   144922 2005 CK38 from LINEAR (April 26.14-19p5)
• E3678   143678 2003 SA224 from LINEAR (April 26.14-18p5)
• 86667   86667 2000 FO10 from MLS (April 27.23-25p4)
• 54686   54686 2001 DU8 from LINEAR (April 26.16-19p4)
• 18736   18736 1998 NU from MLS (April 27.14-16p4)
• 09856   9856 1991 EE from CSS (April 27.44-45p4)
• 07889   7889 1994 LX from LINEAR (April 26.40-44p3)
• 05660   5660 1974 MA from Boambee Obs. (April 26.37-40p3 & 27.35-38p3)
• 04503   4503 Cleobulus (1989 WM) from MLS (April 27.30-32p4)
• 03691   3691 Bede (1982 FT) from Boambee Obs. (April 26.37-44p3 & 27.35-36p2)
• 03554   3554 Amun (1986 EB) from LINEAR (April 26.14-18p5)

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Observers  on 28 April '08

A total of 24 observing facilities appeared in this day's MPECs.

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Impact Risk Monitoring  on 28 April '08

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.

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Chronology  on 28 April '08

Times are UTC for when items were noted or added by The Tracking News.