Laser Bees at work changing an asteroid's orbit. 
Illustration courtesy of Univ. of Strathclyde.

The University of Strathclyde in Glasgow posted a news release Sunday about a presentation on using swarms of small spacecraft to alter asteroid orbits through solar-powered laser ablation. The presentation was made recently to The Planetary Society, which provides funding [see Mirror (Laser) Bees]. Besides planetary defense, this work also applies to accessing the wealth of NEO resources. Illustration courtesy of U. Strathclyde.


Contents  on 28 March '12

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed 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.

Traffic Report  on 28 March '12

Eight objects reported inside ten LD

Eight asteroids are reported flying inside ten lunar distances (LD) of our planet today. Within Earth's Hill sphere, intruder 2012 FS35 is heading away from 1.10 to 1.88 LD and 2012 FT35 exits the sphere, moving from 3.67 to 4.55 LD. More distantly, intruder 2012 FP35 is outbound from 5.56 to 8.71 LD, 2012 FX35 from 6.37 to 7.47 LD, and 2012 FM35 from 6.85 to 7.47 LD, and 2012 FU23 departs from inside ten LD, traveling from 9.19 to 13.14 LD, while intruder 2012 EG5 (risk-listed radar target) is inbound from 8.30 to 6.43 LD and 2012 FV23 from 7.32 to 6.84 LD.

Approaching next, 2012 FW35 and newly announced, risk-listed 2012 FA57 arrive inside ten LD on March 30th, new discovery 2012 FS52 on April 1st, and 2007 HV4 on April 14th.

This report was updated at 0049 March 29th UTC with newly discovered 2012 FA57 (MPEC), and earlier with discovery of 2012 FS52 (MPEC) and follow-up in today's DOU MPEC for 2012 FX35, 2012 FM35, and 2012 EG5. Previous postings were at 1625 and 1815 UTC.


Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. Object distances are interpreted by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 28 March '12

The MPC's NEO Confirmation Page has 11 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eleven objects listed. Of these, eight were "one nighters." The Tracking News counted a total of 27 listings on the NEOCP on this day.

New MPECs  on 28 March '12

Minor Planet Electronic Circulars

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


MPEC 2012-F104 - "23:04 UT" - 2012 FB57


MPEC 2012-F103 - "22:05 UT" - 2012 FA57


MPEC 2012-F102 - "21:32 UT" - 2011 GB55


MPEC 2012-F101 - "16:20 UT" - 2012 FS52


MPEC 2012-F100 - "16:19 UT" - 2012 FR52


MPEC 2012-F99 - "16:17 UT" - 2012 FQ52


MPEC 2012-F98 - "16:15 UT" - 2012 FP52


MPEC 2012-F97 - "16:13 UT" - 2012 FO52


MPEC 2012-F96 - "16:11 UT" - 2012 FN52


<< DOU on 28 Mar. '12 >>  MPEC 2012-F95 - "06:03 UT" - Daily Orbit Update

Observers  on 28 March '12

A total of 53 observers appeared in this day's MPECs.

CodeObserver / observatory
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2012-F98 -- 2012 FP52
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2012-F95 & 2012-F97 -- 2012 FZ23, 2012 FW23, 2012 FO52, 2012 FO35, 2012 FD1, 2012 EL5, 2012 DX75, 2011 XO3, 2011 SR69, 2008 AV28
A74Bergen-Enkheim Obs. in Germany, 1 in MPEC 2012-F98 -- 2012 FP52
B88Bigmuskie Obs. in Italy, 2 in MPEC 2012-F95 -- 2012 FR35, 267221
300Bisei Spaceguard Center in Japan, 4 in MPECs 2012-F97, 2012-F98, 2012-F99 & 2012-F104 -- 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FB57
G51Byrne Obs. in southern California, 1 in MPEC 2012-F95 -- 2012 FH38
160Castelmartini Obs. in Italy, 2 in MPEC 2012-F95 -- 2010 SV3, 306595
703Catalina Sky Survey (CSS) in Arizona, 18 in MPECs 2012-F95, 2012-F96, 2012-F97, 2012-F98, 2012-F99 & 2012-F104 -- 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FN52, 2012 FB57, 2012 DX75, 2009 QE8, 2004 FG11, 2001 HA8, 1998 KN3, 1994 NK, 32906, 320378, 154144, 143947, 136618, 9400, 3352
693Catalina Station in Arizona, 1 in MPEC 2012-F98 -- 2012 FP52
970Chelmsford Obs. in England, 1 in MPEC 2012-F98 -- 2012 FP52
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2012-F95 -- 2012 DX75
822Cordoba Obs. in Argentina, 1 in MPEC 2012-F98 -- 2012 FP52
448Desert Moon Obs. in New Mexico, 2 in MPEC 2012-F95 -- 2010 CN1, 2000 JB6
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPECs 2012-F95, 2012-F97 & 2012-F98 -- 2012 FP52, 2012 FO52, 2011 XO3
113Drebach Obs. in Germany, 4 in MPECs 2012-F96, 2012-F98, 2012-F101 & 2012-F104 -- 2012 FS52, 2012 FP52, 2012 FN52, 2012 FB57
639Dresden Obs. in Germany, 3 in MPEC 2012-F95 -- 2012 FZ23, 2012 FQ35, 2012 AA11
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 1 in MPEC 2012-F100 -- 2012 FR52
203GiaGa Obs. in Italy, 4 in MPECs 2012-F97, 2012-F98, 2012-F99 & 2012-F104 -- 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FB57
J95Great Shefford Obs. in England, 9 in MPECs 2012-F95, 2012-F96, 2012-F97, 2012-F98, 2012-F99, 2012-F101, 2012-F102 & 2012-F104 -- 2012 FZ44, 2012 FW23, 2012 FS52, 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FN52, 2012 FB57, 2011 GB55
379Hamamatsu-Yuto Obs. in Japan, 3 in MPEC 2012-F95 -- 2012 DX75, 2012 AA11, 2011 YV15
H15ISON-NM Obs. in New Mexico, 1 in MPEC 2012-F95 -- 2001 HA8
B15Inastars Obs. in Germany, 1 in MPEC 2012-F95 -- 2012 EG5
046Klet Obs. in the Czech Republic, 8 in MPEC 2012-F95 -- 2012 ES14, 2012 EL5, 2012 DX75, 2012 DK61, 2012 CA55, 2012 BJ134, 2012 AA11, 267221
704LINEAR in New Mexico, 2 in MPEC 2012-F95 -- 2012 AA11, 141018
J38La Vara Obs. in Spain, 1 in MPEC 2012-F95 -- 2012 EG5
A14Les Engarouines Obs. in France, 1 in MPEC 2012-F95 -- 2011 YV15
C01Lohrmann Obs. in Germany, 11 in MPEC 2012-F95 -- 2012 DX75, 2012 BC20, 2012 AA11, 2011 YV15, 2011 SL102, 2004 QJ7, 267221, 163243, 162038, 152667, 136618
560Madonna di Dossobuono Obs. in Italy, 6 in MPEC 2012-F95 -- 2012 FQ35, 2012 EG5, 2012 CA55, 2012 AA11, 2011 SL102, 2004 QJ7
H01Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2012-F96, 2012-F97, 2012-F98, 2012-F99, 2012-F100, 2012-F101, 2012-F103 & 2012-F104 -- 2012 FS52, 2012 FR52, 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FN52, 2012 FB57, 2012 FA57
B90Malina River Obs. in Italy, 2 in MPECs 2012-F96 & 2012-F98 -- 2012 FP52, 2012 FN52
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-F104 -- 2012 FB57
C91Montevenere Obs., 2 in MPEC 2012-F95 -- 2012 EG5, 32906
900Moriyama Obs. in Japan, 1 in MPEC 2012-F98 -- 2012 FP52
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2012-F95, 2012-F101 & 2012-F103 -- 2012 FS52, 2012 FA57, 96631, 318450, 276392, 275558, 137805
A24New Millennium Obs. in Italy, 15 in MPECs 2012-F95, 2012-F97, 2012-F98, 2012-F99, 2012-F103 & 2012-F104 -- 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FB57, 2012 FA57, 2012 DH4, 2012 BC20, 2011 YV15, 1994 NK, 68267, 36183, 302830, 263976, 184990, 9400
0892program code 2 via Nikolaev Obs. in the Ukraine, 6 in MPEC 2012-F95 -- 2012 FQ35, 2012 DX75, 2012 DO, 2012 AA11, 317643, 141018
J69North Obs. in England, 1 in MPEC 2012-F95 -- 2012 FM35
F51Pan-STARRS 1 (PS1) in Hawaii, 16 in MPECs 2012-F95 & 2012-F100 -- 2012 FR52, 2012 FD1, 2012 DO, 89830, 318050, 312473, 241370, 238063, 21088, 16912, 143947, 138013, 136618, 100926, 9400, 3102
H23Pear Tree Obs. in Florida, 2 in MPEC 2012-F95 -- 2012 EG5, 2012 DX75
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2012-F95 -- 2012 DX75, 2012 AA11, 5587
D03Rantiga Obs., 1 in MPEC 2012-F96 -- 2012 FN52
461SZTE Asteroid Program in Hungary, 2 in MPECs 2012-F96 & 2012-F104 -- 2012 FN52, 2012 FB57
854Sabino Canyon Obs. in Arizona, 5 in MPECs 2012-F96, 2012-F97, 2012-F98, 2012-F99 & 2012-F101 -- 2012 FS52, 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FN52
B04Saint-Barthelemy Obs. in Italy, 3 in MPECs 2012-F97, 2012-F98 & 2012-F99 -- 2012 FQ52, 2012 FP52, 2012 FO52
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2012-F95, 2012-F97, 2012-F98 & 2012-F99 -- 2012 FQ52, 2012 FP52, 2012 FO52, 2012 EG5
204Schiaparelli Obs. in Italy, 5 in MPECs 2012-F96, 2012-F97, 2012-F98, 2012-F99 & 2012-F104 -- 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FN52, 2012 FB57
J84South Obs. in England, 3 in MPECs 2012-F95 & 2012-F98 -- 2012 FX35, 2012 FP52, 2012 DX75
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2012-F95 -- 320378, 219527, 186822, 18109
291Spacewatch 1.8m telescope in Arizona, 21 in MPECs 2012-F95 & 2012-F96 -- 2012 FZ23, 2012 FZ13, 2012 FQ1, 2012 FN52, 2012 EY11, 2012 EW14, 2012 EU14, 2012 EC, 2012 DT60, 2012 DL31, 2012 DK4, 2012 DJ61, 2012 DG61, 2012 DG4, 2012 CQ36, 2011 WS2, 2011 WB39, 2010 SO16, 2006 WU, 2005 QQ30, 2004 HH33
I93St. Pardon de Conques Obs. in France, 6 in MPECs 2012-F96, 2012-F97, 2012-F98, 2012-F99, 2012-F103 & 2012-F104 -- 2012 FQ52, 2012 FP52, 2012 FO52, 2012 FN52, 2012 FB57, 2012 FA57
A48Verona Obs. in Italy, 2 in MPEC 2012-F95 -- 2012 FQ35, 2012 AA11
C44Volta Obs. in Italy, 2 in MPECs 2012-F96 & 2012-F104 -- 2012 FN52, 2012 FB57
718Wiggins Obs. in Utah, 1 in MPEC 2012-F95 -- 2012 EG5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 March '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2359 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON2 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
2012 FA57JPL Sentry23592019-2103298.6e-06-5.17-5.580JPL: "Analysis based on 18 observations spanning .69082 days (2012-Mar-28.18963 to 2012-Mar-28.88045)." Diameter approximately 0.021 km. from mean, weighted H=26.0.
2012 EG5JPL Sentry1619210726.1e-07-6.25-6.420JPL: "Analysis based on 214 observations spanning 14.654 days (2012-Mar-13.30201 to 2012-Mar-27.95606)." Diameter approximately 0.047 km. from mean, weighted H=24.3.
2012 ECJPL Sentry16192090-209926.8e-07-5.89-6.100JPL: "Analysis based on 93 observations spanning 25.999 days (2012-Mar-01.3419 to 2012-Mar-27.34088)." Diameter approximately 0.068 km. from mean, weighted H=23.5.
NEODyS16192090-209013.76e-07-6.12-6.120NEODyS: "Based on 93 optical observations (of which 0 are rejected as outliers) from 2012-03-01.343 to 2012-03-27.342."

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.

Chronology  on 28 March '12

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

0049 3/29Updated Traffic Report
2359Noted that JPL Sentry has posted 2012 FA57 as an impact risk - see above
2320Grabbed MPEC 2012-F104 - 2012 FB57 - see above
2231Grabbed MPEC 2012-F102 - 2011 GB55 - see above
Grabbed MPEC 2012-F103 - 2012 FA57 - see above
1733Grabbed MPEC 2012-F100 - 2012 FR52 - see above
Grabbed MPEC 2012-F101 - 2012 FS52 - see above
1619Noted that JPL Sentry has updated its 2012 EC risk assessment - see above
Noted that NEODyS has updated its 2012 EC risk assessment - see above
Noted that JPL Sentry has updated its 2012 EG5 risk assessment - see above
Grabbed MPEC 2012-F95 - Daily Orbit Update - see above
Grabbed MPEC 2012-F96 - 2012 FN52 - see above
Grabbed MPEC 2012-F97 - 2012 FO52 - see above
Grabbed MPEC 2012-F98 - 2012 FP52 - see above
Grabbed MPEC 2012-F99 - 2012 FQ52 - see above