In this excerpt from an animation, the Dawn spacecraft's huge spread of solar panels reflects the Florida coastline from space. Courtesy NASA Dawn mission.
Contents on 6 June '07
- Minor-Object News -- one item
- Minor-Object Science -- two papers
- IAU Minor Planet Center
- Impact Risk Monitoring -- nothing to report
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 6 June '07
- "June 2nd Dawn Journal," NASA Dawn mission 5 June - Quote: "While some team members have been preparing the spacecraft, others have been working with equal diligence to be ready to operate it during its mission. Many tests have been conducted both with the spacecraft and with simulators to verify that all systems onboard and on the ground are ready."
Minor-Object Science on 6 June '07
- "The Spitzer c2d Survey of Weak-line T Tauri Stars II: New Constraints on the Timescale for Planet Building" by Cieza, Lucas with Deborah L. Padgett, Karl R. Stapelfeldt & 17 others, abstract & PDF at arXiv.org 6 June - Quote: "One of the central goals of the Spitzer Legacy Project 'From Molecular Cores to Planet-forming Disks' (c2d) is to determine the frequency of remnant circumstellar disks around weak-line T Tauri stars (wTTs) and to study the properties and evolutionary status of these disks. Here we present a census of disks for a sample of over 230 spectroscopically identified wTTs located in the c2d IRAC (3.6, 4.5, 4.8, and 8.0 um) and MIPS (24 um) maps of the Ophiuchus, Lupus, and Perseus Molecular Clouds."
- "Terrestrial Zone Debris Disk Candidates in h & chi Persei" by Currie, Thayne with Scott J. Kenyon, George Rieke & 2 others, abstract & PDF at arXiv.org 6 June - Quote: "While many debris disk surveys ... have discovered evidence for Kuiper-belt analogues from 24-70 um excess emission around early A stars, there have been fewer searches for terrestrial zone debris disks around ~1-2 [Solar mass] stars."
NEOCP Activity on 6 June '07
The MPC's NEO Confirmation Page has 1 listing: 1 new
When last checked at 0005 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new listing. This was a "one nighter."
New MPECs on 6 June '07
Minor Planet Electronic Circulars
There was one MPEC issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- Observations of small asteroids (H>22.0)
- K07K02W 2007 KW2 (arc=15 days, H=22.3 ~117m) from Astronomical Research Obs. (ARO) (June 5.23-24p6)
- K07K02V 2007 KV2 (arc=15 days, H=24.6 ~41m) from ARO (June 5.14-16p3 at V=22.3-5)
- K07K02D 2007 KD2 (Q=4.430 AU, arc=18 days, H=23.3 ~74m) from ARO (June 5.12-13p4) and the Spacewatch 1.8m telescope (June 5.35-36p3)
- K07K00K 2007 KK (arc=20 days, H=23.4 ~71m) from ARO (June 5.25p2)
- K07J16G 2007 JG16 (arc=25 days, H=23.8 ~59m) from ARO (June 5.27-28p2)
- K07A02S 2007 AS2 (Q=4.204 AU, arc=47 days, H=22.1 ~129m) from New Millennium Obs. (Jan. 19.91-95p3 & 20.01p1)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K07A02C 2007 AC2 (Q=4.211 AU, arc=27 days, H=21.8 ~148m) from New Millennium Obs. (Jan. 19.93p3 & 20.02p3)
- K06U17Q 2006 UQ17 (arc=162 days, H=21.9 ~141m) from New Millennium Obs. (Jan. 19.94-99p6 & 29.97-98p2)
- K06A04M 2006 AM4 (q=0.344 AU, arc=2 opp, H=21.8 ~148m) from New Millennium Obs. (Jan. 28.08p2)
- Observations of other objects
- K07J22H 2007 JH22 (arc=24 days, H=21.7 ~155m) from Spacewatch 1.8m (June 5.43-44p3)
- K07J02X 2007 JX2 (arc=27 days, H=19.4 ~446m) from Spacewatch 1.8m (June 5.22-23p3)
- K07H03W 2007 HW3 (Q=4.273 AU, arc=47 days, H=20.5 ~269m) from ARO (June 4.10-11p3)
- K07H00B 2007 HB (arc=50 days, H=19.7 ~389m) from Spacewatch 1.8m (June 5.28-32p3)
- K07G03S 2007 GS3 (arc=55 days, H=19.3 ~467m) from Sandlot Obs. (June 5.36-40p3)
- K07D40Z 2007 DZ40 (Q=4.841 AU, arc=103 days, H=18.4 ~708m) from ARO (June 5.26-27p6)
- K07B07D 2007 BD7 (arc=15 days, H=21.1 ~204m) from New Millennium Obs. (Jan. 26.80p3, 26.85p3, 26.89p3 & 28.79-80p2)
- K07A02T 2007 AT2 (arc=91 days, H=19.6 ~407m) from New Millennium Obs. (Jan. 12.89p2, 27.79-81p2 & 28.76-81p8)
- K07A02B 2007 AB2 (arc=58 days, H=20.3 ~295m) from New Millennium Obs. (Jan. 12.91p1)
- K06Y02Y 2006 YY2 (arc=131 days, H=17.9 ~891m) from New Millennium Obs. (Jan. 27.88-91p2)
- K06Y00N 2006 YN (arc=69 days, H=19.7 ~389m) from New Millennium Obs. (Jan. 12.93p1 & 19.93p1)
- K06W01X 2006 WX1 (arc=93 days, H=19.6 ~407m) from New Millennium Obs. (Jan. 12.91p1 & 19.99p3)
- K06UL6N 2006 UN216 (Q=5.188 AU, arc=164 days, H=18.9 ~562m) from New Millennium Obs. (Jan. 26.80-86p6, 27.97-99p2 & 28.78-82p3)
- K06SD4J 2006 SJ134 (arc=2 opp, H=18.0 ~851m) from New Millennium Obs. (Jan. 26.82-83p2, 26.88p2, 28.85-87p2 & 29.95-96p3)
- K06S07H 2006 SH7 (arc=2 opp, H=19.8 ~371m) from New Millennium Obs. (Jan. 12.92p1)
- K06P01A 2006 PA1 (arc=2 opp, H=19.7 ~389m) from New Millennium Obs. (Jan. 12.93p1 & 19.94-98p5)
- K06O05A 2006 OA5 (arc=2 opp, H=19.7 ~389m) from New Millennium Obs. (Jan. 27.05-06p2 & 29.96p1)
- K06G00B 2006 GB (arc=2 opp, H=20.3 ~295m) from ARO (June 5.18p5)
- K05A13D 2005 AD13 (arc=2 opp, H=17.9 ~891m) from the Catalina Sky Survey (CSS) (June 5.37-38p3)
- K04F31X 2004 FX31 (arc=4 opp, H=17.5 ~1.07 km) from ARO (June 5.21-23p4)
- K01A50A 2001 AA50 (i=43.9°, arc=3 opp, H=18.4 ~708m) from New Millennium Obs. (Jan. 27.05-06p2)
- F3951 153951 2002 AC3 from New Millennium Obs. (Jan. 27.98-00p2 & 28.79-82p4)
- F3219 153219 2000 YM29 from New Millennium Obs. (Jan. 19.94p2, 26.85p1 & 28.78p2)
- E3381 143381 2003 BC21 from New Millennium Obs. (Jan. 26.82-85p4 & 28.86-87p2)
- E1018 141018 2001 WC47 from New Millennium Obs. (Jan. 19.91p3, 20.00-01p3 & 27.81-86p5)
- D7170 137170 1999 HF1 from CSS (June 5.15-16p4)
- 53435 53435 1999 VM40 from New Millennium Obs. (Jan. 27.06-07p2, 28.87-88p2 & 29.96-98p3)
- 31221 31221 1998 BP26 from New Millennium Obs. (Jan. 26.96p1, 28.88-89p3 & 29.97-98p2)
- 05693 5693 1993 EA from New Millennium Obs. (Jan. 26.95p1, 27.05-07p2, 28.85p1 & 29.96-97p2)
- 05646 5646 1990 TR from New Millennium Obs. (Jan. 26.80-84p7 & 26.89p1)
- 05626 5626 1991 FE from New Millennium Obs. (Jan. 26.95p1, 28.93p1 & 29.96-97p2)
- 04544 4544 Xanthus (1989 FB) from New Millennium Obs. (Jan. 27.07-08p2)
- 03199 3199 Nefertiti (1982 RA) from New Millennium Obs. (Jan. 27.07p1)
- 03103 3103 Eger (1982 BB) from New Millennium Obs. (Jan. 29.97-98p2)
- 02212 2212 Hephaistos (1978 SB) from New Millennium Obs. (Jan. 19.91-97p6, 26.84p1 & 28.77-78p2)
- 01866 1866 Sisyphus (1972 XA) from New Millennium Obs. (Jan. 26.80-85p5, 27.82p1, 27.97-99p2 & 28.78-81p3)
- 01627 1627 Ivar (1929 SH) from New Millennium Obs. (Jan. 12.93p1, 19.93p1, 26.85p1, 27.97-00p2 & 28.79-81p6)
Observers on 6 June '07
Five observing facilities appeared in this day's MPECs.
|H55||Astronomical Research Obs. in Illinois, 9 in MPEC 2007-L17 -- 2007 KW2, 2007 KV2, 2007 KD2, 2007 KK, 2007 JG16, 2007 HW3, 2007 DZ40, 2006 GB, 2004 FX31|
|703||Catalina Sky Survey in Arizona, 2 in MPEC 2007-L17 -- 2005 AD13, 137170|
|A24||New Millennium Obs. in Italy, 31 in MPEC 2007-L17 -- 2007 AS2, 2007 AC2, 2006 UQ17, 2006 AM4, 2007 BD7, 2007 AT2, 2007 AB2, 2006 YY2, 2006 YN, 2006 WX1, 2006 UN216, 2006 SJ134, 2006 SH7, 2006 PA1, 2006 OA5, 2001 AA50, 153951, 153219, 143381, 141018, 53435, 31221, 5693, 5646, 5626, 4544, 3199, 3103, 2212, 1866, 1627|
|H36||Sandlot Obs. in Kansas, 1 in MPEC 2007-L17 -- 2007 GS3|
|291||Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2007-L17 -- 2007 KD2, 2007 JH22, 2007 JX2, 2007 HB|
Chronology on 6 June '07
Times are UTC for when the items were noted by Major News.
|1522||The NEOCP has become active|
|1427||Grabbed MPEC 2007-L17 - Daily Orbit Update - see above|
|0621||Added MOS paper, "Terrestrial Zone Debris Disk Candidates in h & chi Persei" - see above|
Added MOS paper, "The Spitzer c2d Survey of Weak-line T Tauri Stars II: New Constraints on the Timescale for Planet Building" - see above
Added link to news story, "June 2nd Dawn Journal"