Workers at Cape Canaveral Air Force Station Launch Pad 17-B attach a crane to a cannister carrying the Dawn spacecraft, mated to its third-stage booster, in preparation for stacking atop the Delta II rocket and launch next Saturday. Credit: NASA/Troy Cryder.
Contents on 1 July '07
- Minor-Object News -- one item
- Minor-Object Science -- one paper
- IAU Minor Planet Center
- NEOCP Activity
- New MPECs -- one MPEC
- Observers -- seven observing facilities
- Impact Risk Monitoring -- one object reported
- Chronology
Resources:
- Consolidated Risk Tables - CRT page
- Ephemerides for risk-rated objects
- Ephemerides for small asteroids
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 this year with a calendar interface. And use the all-up news archive to access news anytime since A/CC began in early 2002. To watch for what's new each day, watch the Chronology section.
Minor-Object News on 1 July '07
- "Technical societies call for increase to NASA budget," AIAA at EurekAlert 28 June - Quote: "[We] know first-hand that our colleagues continue their work despite the interrelated and disturbing trends of reduced federal research funding, a shrinking workforce in the science and engineering disciplines, and a calamitous decrease in the number of students choosing to carry on this commitment in the future." - Note: The June 28th letters advocating restoration of NASA funding can be found as 165Kb PDFs for the House and Senate.
Minor-Object Science on 1 July '07
- "Very high presolar grain abundances in the CR chondrite QUE 99177" by Floss, C. with F.J. Stadermann, abstract & PDF from Frank J. Stadermann 18 May - Quote: "CR chondrites represent one of the most primitive chondrite groups and have often been compared with IDPs because both types of materials contain abundant H and N isotopic anomalies. However, whereas IDPs contain abundant presolar silicates, such grains are very rare in CR chondrites measured to date. In order to explore whether aqueous alteration accounts for the lack of presolar silicates in these meteorites, we are investigating the presolar grain abundances in the CR chondrite QUE 99177, which is less altered than most members of this group."
NEOCP Activity on 1 July '07
The MPC's NEO Confirmation Page is currently empty
The NEOCP is currently empty and hasn't been noted by Major News as active yet today (last checked at 1801 UTC).
New MPECs on 1 July '07
Minor Planet Electronic Circulars
As of last check at 1801 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
<< DOU on 1 July '07 >> MPEC 2007-N01 - "06:07 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K07M24B 2007 MB24 from Great Shefford Obs. (June 29.93-94p4)
- Observations of small asteroids (H>22.0)
- K07M04B 2007 MB4 (arc=16 days, H=22.6 ~102m) from Santa Mama Obs. (June 29.87-88p4), Wildberg Obs. (June 30.86-87p5), and Pla D'Arguines Obs. (June 30.96p5)
- Observations of other objects
- K07L15A 2007 LA15 (arc=18 days, H=19.4 ~446m) from Pla D'Arguines Obs. (June 30.95p4)
- K07L00F 2007 LF (arc=24 days, H=20.5 ~269m) from Wildberg Obs. (June 30.90p5)
- K07D40Z 2007 DZ40 (Q=4.841 AU, arc=129 days, H=18.5 ~676m) from Pla D'Arguines Obs. (June 30.97-98p5)
- K06V13D 2006 VD13 (arc=2 opp, H=19.0 ~537m) from New Millennium Obs. (March 13.86-97p8)
- K05N44W 2005 NW44 from Santa Mama Obs. (June 29.83-86p4)
- K02E09Q 2002 EQ9 from New Millennium Obs. (March 13.08-16p6)
- E5656 145656 4788 P-L from Cima Rest Obs. (June 22.84p3)
- 86039 86039 1999 NC43 from New Millennium Obs. (March 13.86-96p9)
- 68216 68216 2001 CV26 from New Millennium Obs. (March 13.02-18p13)
- 24443 24443 2000 OG from La Canada Obs. (June 29.88-90p3)
- 05751 5751 Zao (1992 AC) from New Millennium Obs. (March 13.82-89p7)
- 04257 4257 Ubasti (1987 QA) from New Millennium Obs. (March 13.02-18p13)
- 03554 3554 Amun (1986 EB) from New Millennium Obs. (March 13.82-90p6)
- 01943 1943 Anteros (1973 EC) from New Millennium Obs. (March 13.84-93p8)
- 01866 1866 Sisyphus (1972 XA) from New Millennium Obs. (March 13.86-02p14)
- 01627 1627 Ivar (1929 SH) from New Millennium Obs. (March 13.87-01p13)
Observers on 1 July '07
Seven observing facilities appear in today's MPECs.
| B11 | Cima Rest Obs. in Italy, 1 in MPEC 2007-N01 -- 145656 |
| J95 | Great Shefford Obs. in England, 1 in MPEC 2007-N01 -- 2007 MB24 |
| J87 | La Canada Obs. in Spain, 1 in MPEC 2007-N01 -- 24443 |
| A24 | New Millennium Obs. in Italy, 10 in MPEC 2007-N01 -- 2006 VD13, 2002 EQ9, 86039, 68216, 5751, 4257, 3554, 1943, 1866, 1627 |
| 941 | Pla D'Arguines Obs. in Spain, 3 in MPEC 2007-N01 -- 2007 MB4, 2007 LA15, 2007 DZ40 |
| B38 | Santa Mama Obs. in Italy, 2 in MPEC 2007-N01 -- 2007 MB4, 2005 NW44 |
| 198 | Wildberg Obs. in Germany, 2 in MPEC 2007-N01 -- 2007 MB4, 2007 LF |
Impact Risk Monitoring on 1 July '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 MB24 | JPL | 1329 | R E M O V E D | JPL: Risk listing removed at 1008 UTC. | |||||
| NEODyS | 1329 | 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
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 this.
Chronology on 1 July '07
Times are UTC for when the items were noted by Major News.
| 1614 | Added MOS paper, "Very high presolar grain abundances in the CR chondrite QUE 99177" - see above Added link to news story, "Technical societies call for increase to NASA budget" |
| 1329 | Noted that JPL has removed 2007 MB24 as an impact risk - see above Noted that NEODyS has removed 2007 MB24 as an impact risk - see above Grabbed MPEC 2007-N01 - Daily Orbit Update - see above |
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