Contents on 14 June '07
- Minor-Object News -- five items
- Minor-Object Science -- two papers
- IAU Minor Planet Center
- Impact Risk Monitoring -- three objects reported
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 14 June '07
- "Dawn Spacecraft Slightly Damaged," NASA Watch 14 June - Quote: "Dawn was slightly damaged Monday by a tech's tool. The damage was to the back side of a solar array."
- "Meteor shower lights up sky," Fort Worth Star-Telegram 14 June - Quote: "What many people saw [Wednesday night] was the beginning of a minor meteor shower."
- "Scientist Sifts Through Meteorites and Bricks," Moscow Times 14 June - Quote: "The meteorite laboratory traces its history back to 1749, when a 700-kilogram piece of iron rock was found near Krasnoyarsk and donated to the Russian Academy of Sciences."
- "The University of Hawaii's Institute for Astronomy and PBS Hawaii Present What's Up in the Universe?," IFA 12 June - Quote: "This film looks at the human need to explore and ponders whether there is life elsewhere in the universe. The film features navigator Nainoa Thompson of the Polynesian Voyaging Society, planetary scientist and artist Dr. William Hartmann, who paints extraterrestrial landscapes, and planetary scientist and ballerina Robin Canup, who further explores the relation between art and science, [as well as others]."
- "Free from the Atmosphere," ESO 13 June - Quote: "[The Laser Guide Star System] can also be applied to solar system objects, such as asteroids... During their science verification, the scientists turned the SINFONI instrument with the LGS to a Trans-Neptunian Object, 2003 EL61. The high image contrast and sensitivity obtained with the use of the LGS mode permit the detection of the two faint satellites known to orbit the TNO. 'From such observations one can study the chemical composition of the surface material of the TNO and its satellites (mainly crystalline water ice), estimate their surface properties and constrain their internal structure,' explains Christophe Dumas."
Minor-Object Science on 14 June '07
- "Near-Infrared Polarimetry of the Eagle Nebula (M16)" by Sugitani, Koji with Makoto Watanabe, Motohide Tamura & 10 others, abstract & PDF at arXiv.org 13 June - Quote: "The polarization intensity map reveals that two YSOs with near-IR reflection nebulae are located at the tips of two famous molecular pillars (Pillars 1 and 2) facing toward the exciting stars of M16. The centrosymmetric polarization pattern are consistent with those around class I objects having circumstellar envelopes, confirming that star formation is now taking place at the two tips of the pillars."
- "The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. IV. Lupus Observed with MIPS" by Chapman, Nicholas L. with Shih-Ping Lai, Lee G. Mundy & 22 others, abstract & PDF at arXiv.org 14 June - Quote: "Finally, based on our color-magnitude diagrams, we selected 12 of our reddest candidate young stellar objects for individual discussion. Five of the 12 appear to be newly-discovered YSOs."
NEOCP Activity on 14 June '07
The MPC's NEO Confirmation Page has 7 listings: 4 new, 3 updated
When last checked at 2339 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had four new and three updated listings. Of these, five were "one nighters." Major News counted a total of twelve objects listed on the NEOCP at some point on this day.
New MPECs on 14 June '07
Minor Planet Electronic Circulars
There were six MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-L51 time-stamped "04:05 UT" - 2007 LA15 - see below
- MPEC 2007-L52 time-stamped "04:14 UT" - 2007 LB15 - see below
- MPEC 2007-L53 time-stamped "06:07 UT" - Daily Orbit Update - see below
- MPEC 2007-L54 time-stamped "10:53 UT" - 2007 LC15 - see below
- MPEC 2007-L55 time-stamped "11:51 UT" - 2001 SS287 - see below
- MPEC 2007-L56 time-stamped "12:00 UT" - 2005 GO22
MPEC 2007-L56 - "12:00 UT" - 2005 GO22
- K05G22O 2005 GO22 (q=0.336 AU, Earth MOID=7.4 LD, H=18.7 ~616m) from the Spacewatch 1.8m telescope (June 13.42-44p3 & 14.41-43p3 at V=22.5)
MPEC 2007-L55 - "11:51 UT" - 2001 SS287
- K01SS7S 2001 SS287 (Q=5.437 AU, H=18.3 ~741m) from Spacewatch 1.8m (June 13.46-47p3 & 14.44-45p3)
MPEC 2007-L54 - "10:53 UT" - 2007 LC15
- K07L15C 2007 LC15 (q=0.343 AU, H=18.8 ~589m) was discovered at 0424 UT 11 June by the Mt. Lemmon Survey (MLS), which observed it at June 11.18-20p4. The discovery was confirmed by Spacewatch 1.8m (June 13.17-18p2 & 14.18-19p3).
- Observations of risk-listed objects
- K07L00S 2007 LS (Q=4.527 AU, arc=5 days, H=17.8 ~933m) from Spacewatch 1.8m (June 13.22-23p3)
- Observations of small asteroids (H>22.0)
- K07L00T 2007 LT (arc=4 days, H=22.4 ~112m) from the Siding Spring Survey (SSS) (June 13.69-73p3)
- K07J16G 2007 JG16 (arc=33 days, H=23.7 ~62m) from Astronomical Research Obs. (ARO) (June 13.28-29p4)
- Observations of other objects
- K07L08V 2007 LV8 (arc=1 day, H=19.9 ~355m) from Jim Young via Table Mtn. Obs. (June 13.27-31p4) and Petit Jean Mtn. South Obs. (PJMSO) (June 13.29-30p8)
- K07L00F 2007 LF (arc=6 days, H=20.5 ~269m) from Greiner Research Obs. (June 13.12p2), PJMSO (June 13.27-29p8), and the Catalina Sky Survey (CSS) (June 13.29-31p4)
- K07L00D 2007 LD (arc=6 days, H=19.0 ~537m) from CSS (June 13.21-24p4) and PJMSO (June 13.24p1)
- K07H82X 2007 HX82 (Q=4.096 AU, arc=48 days, H=20.4 ~282m) from PJMSO (June 13.30-31p6)
- K07G05Z 2007 GZ5 (arc=59 days, H=21.3 ~186m) from ARO (June 13.10-12p3)
- K07F42V 2007 FV42 (arc=85 days, H=17.8 ~933m) from Montana Blanca Obs. (June 11.91p2) and PJMSO (June 13.36-37p7)
- K07D40Z 2007 DZ40 (Q=4.841 AU, arc=111 days, H=18.5 ~676m) from PJMSO (June 13.37-38p6)
- K07B50B 2007 BB50 (Q=4.885 AU, arc=85 days, H=18.5 ~676m) from New Millennium Obs. (Feb. 15.95p1, 15.99p1, 16.97-98p2, 17.04p1 & 18.91p1)
- K06Y13C 2006 YC13 (arc=171 days, H=20.3 ~295m) from Spacewatch 1.8m (June 13.44-45p3 at V=22.2)
- K06V13D 2006 VD13 (arc=2 opp, H=19.0 ~537m) from New Millennium Obs. (Feb. 16.90-93p2, 18.78p1 & 18.82p1)
- K06SD4J 2006 SJ134 (arc=2 opp, H=18.0 ~851m) from New Millennium Obs. (Feb. 17.01-03p2)
- K06K89E 2006 KE89 (i=45.1°, q=0.211 AU, arc=3 opp, H=16.5 ~1.70 km) from PJMSO (June 13.23p5)
- K05N44W 2005 NW44 (arc=2 opp, H=20.5 ~269m) from Young/Table Mtn. (June 12.41-45p4 & 13.41-43p4)
- K04L00G 2004 LG (i=71.0°, q=0.212 AU, arc=2 opp, H=18.1 ~812m) from PJMSO (June 13.35-36p5)
- K03O14R 2003 OR14 (arc=4 opp, H=16.4 ~1.78 km) from ARO (June 13.32-33p5)
- K02T60D 2002 TD60 (arc=2 opp, H=19.3 ~467m) from New Millennium Obs. (Feb. 15.96-99p2, 16.98-05p4 & 18.92p1)
- K02K04F 2002 KF4 (i=37.2°, Q=4.571 AU, arc=3 opp, H=17.2 ~1.23 km) from PJMSO (June 13.25p6)
- K00R11S 2000 RS11 (arc=4 opp, H=19.1 ~513m) from ARO (June 13.30-31p6)
- F5341 155341 2006 SA218 from New Millennium Obs. (Feb. 17.01-04p2 & 18.90p1)
- F2895 152895 2000 CQ101 from New Millennium Obs. (Feb. 15.96-00p3, 16.98-00p2, 17.05p1 & 18.92p1)
- E5656 145656 4788 P-L from Four Winds Obs. (June 12.13-16p4 & 14.14-15p4) and PJMSO (June 13.26p5)
- E3381 143381 2003 BC21 from New Millennium Obs. (Feb. 15.99p1 & 17.03p1)
- D6874 136874 1998 FH74 from PJMSO (June 13.27p5) and Four Winds Obs. (June 14.16p3)
- D6818 136818 1997 MW1 from SSS (June 13.70-74p4)
- 68348 68348 2001 LO7 from the Spacewatch 0.9m telescope (June 13.34-38p3)
- 53435 53435 1999 VM40 from New Millennium Obs. (Feb. 15.99-00p2, 16.97-04p4 & 18.91p1)
- 40267 40267 1999 GJ4 from Four Winds Obs. (June 13.16-17p3 & 14.21-22p3)
- 26166 26166 1995 QN3 from CSS (June 13.41-42p3)
- 07977 7977 1977 QQ5 from CSS (June 13.42-44p4)
- 06050 6050 Miwablock (1992 AE) from Spacewatch 0.9m (June 13.29-39p6)
- 05693 5693 1993 EA from New Millennium Obs. (Feb. 15.94p1, 15.99-00p2 & 16.96-02p4)
- 05626 5626 1991 FE from New Millennium Obs. (Feb. 15.00-01p2)
- 04544 4544 Xanthus (1989 FB) from New Millennium Obs. (Feb. 5.00p1, 15.98p1, 16.99-04p4 & 18.93p1)
- 03352 3352 McAuliffe (1981 CW) from Spacewatch 0.9m (June 13.29-32p3)
- 03199 3199 Nefertiti (1982 RA) from New Millennium Obs. (Feb. 15.97-00p2)
- 03103 3103 Eger (1982 BB) from New Millennium Obs. (Feb. 15.96-99p2, 16.97-04p4 & 18.93p1)
- 02212 2212 Hephaistos (1978 SB) from New Millennium Obs. (Feb. 16.95-96p2 & 18.78-86p7)
- 01943 1943 Anteros (1973 EC) from New Millennium Obs. (Feb. 16.96-97p2 & 18.79-86p7)
- 01866 1866 Sisyphus (1972 XA) from New Millennium Obs. (Feb. 16.96-97p2 & 18.84-88p3)
- 01627 1627 Ivar (1929 SH) from New Millennium Obs. (Feb. 16.91-95p3 & 18.80-88p4)
MPEC 2007-L52 - "04:14 UT" - 2007 LB15
- K07L15B 2007 LB15 (risk-listed, Earth MOID=4.6 LD, H=19.6 ~407m) was discovered at 0819 UT 13 June by CSS, which observed it at June 13.35-41p6. The discovery was confirmed by the SZTE Asteroid Program (SZTE) (June 14.03p3).
MPEC 2007-L51 - "04:05 UT" - 2007 LA15
Observers on 14 June '07
Fifteen observing facilities appeared in this day's MPECs.
|H55||Astronomical Research Obs. in Illinois, 4 in MPEC 2007-L53 -- 2007 JG16, 2007 GZ5, 2003 OR14, 2000 RS11|
|A74||Bergen-Enkheim Obs. in Germany, 1 in MPEC 2007-L51 -- 2007 LA15|
|703||Catalina Sky Survey in Arizona, 6 in MPECs 2007-L51, 2007-L52 & 2007-L53 -- 2007 LF, 2007 LD, 26166, 7977, 2007 LB15, 2007 LA15|
|762||Four Winds Obs. in Michigan, 3 in MPEC 2007-L53 -- 145656, 136874, 40267|
|H51||Greiner Research Obs. in Wisconsin, 1 in MPEC 2007-L53 -- 2007 LF|
|J46||Montana Blanca Obs., 1 in MPEC 2007-L53 -- 2007 FV42|
|G96||Mt. Lemmon Survey in Arizona, 1 in MPEC 2007-L54 -- 2007 LC15|
|A24||New Millennium Obs. in Italy, 17 in MPEC 2007-L53 -- 2007 BB50, 2006 VD13, 2006 SJ134, 2002 TD60, 155341, 152895, 143381, 53435, 5693, 5626, 4544, 3199, 3103, 2212, 1943, 1866, 1627|
|H45||Petit Jean Mtn. South Obs. in Arkansas, 11 in MPEC 2007-L53 -- 2007 LV8, 2007 LF, 2007 LD, 2007 HX82, 2007 FV42, 2007 DZ40, 2006 KE89, 2004 LG, 2002 KF4, 145656, 136874|
|461||SZTE Asteroid Program in Hungary, 1 in MPEC 2007-L52 -- 2007 LB15|
|E12||Siding Spring Survey in New South Wales, 2 in MPEC 2007-L53 -- 2007 LT, 136818|
|691||Spacewatch 0.9m telescope in Arizona, 3 in MPEC 2007-L53 -- 68348, 6050, 3352|
|291||Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2007-L53, 2007-L54, 2007-L55 & 2007-L56 -- 2005 GO22, 2001 SS287, 2007 LC15, 2007 LS, 2006 YC13|
|6735||Jim Young via Table Mtn. Obs. in southern California, 2 in MPEC 2007-L53 -- 2007 LV8, 2005 NW44|
|A55||Vallemare di Borbona Obs. in Italy, 1 in MPEC 2007-L51 -- 2007 LA15|
Impact Risk Monitoring on 14 June '07
Notes for Today's Latest Risk Assessments
|2007 LS||JPL||1155||2064-2103||6||7.2e-09||-5.05||-5.44||0||JPL: "Analysis based on 25 observations spanning 4.9383 days (2007-Jun-08.29124 to 2007-Jun-13.22951)." Diameter approximately 0.822 km. from mean, weighted H=18.1.|
|NEODyS||1155||2064-2078||2||1.31e-09||-5.58||-5.64||0||NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2007/06/08.292 to 2007/06/13.230."|
|2007 LB15||NEODyS||2345||2008-2077||118||1.49e-07||-2.64||-2.86||0||NEODyS: "Based on 9 optical observations (of which 0 are rejected as outliers) from 2007/06/13.347 to 2007/06/14.033."|
|JPL||1335||2008-2106||754||9.7e-07||-2.27||-2.65||0||JPL: "Analysis based on 9 observations spanning .68564 days (2007-Jun-13.3467 to 2007-Jun-14.03234)." Diameter approximately 0.487 km. from mean, weighted H=19.2.|
|2007 LA15||NEODyS||1750||2014-2080||30||8.39e-09||-5.01||-5.36||0||NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2007/06/13.320 to 2007/06/13.945."|
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 14 June '07
Times are UTC for when the items were noted by Major News.
|2345||Noted that NEODyS has posted 2007 LB15 as an impact risk - see above|
|1750||Noted that NEODyS has posted 2007 LA15 as an impact risk - see above|
|1444||Added link to news story, "Dawn Spacecraft Slightly Damaged"|
|1409||Added link to news story, "Meteor shower lights up sky"|
|1334||Noted that JPL has posted 2007 LB15 as an impact risk - see above|
|1330||Added MOS paper, "Near-Infrared Polarimetry of the Eagle Nebula (M16)" - see above|
Added MOS paper, "The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. IV. Lupus Observed with MIPS" - see above
Added link to news story, "Free from the Atmosphere"
Added link to news story, "The University of Hawaii's Institute for Astronomy and PBS Hawaii Present What's Up in the Universe?"
Added link to news story, "Scientist Sifts Through Meteorites and Bricks"
|1214||Grabbed MPEC 2007-L56 - 2005 GO22 - see above|
|1155||Noted that JPL has updated its 2007 LS risk assessment - see above|
Noted that NEODyS has updated its 2007 LS risk assessment - see above
Grabbed MPEC 2007-L51 - 2007 LA15 - see above
Grabbed MPEC 2007-L52 - 2007 LB15 - see above
Grabbed MPEC 2007-L53 - Daily Orbit Update - see above
Grabbed MPEC 2007-L54 - 2007 LC15 - see above
Grabbed MPEC 2007-L55 - 2001 SS287 - see above