Contents on 6 July '13
- Traffic Report -- two objects
- IAU Minor Planet Center
- Observers -- thirteen observers
- Impact Risk Monitoring -- two objects
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 506 risk-listed objects, 20 have had news in the last 31 days. Updated at 1400 UTC on 6 July.
- Ephemerides for risk-rated & nearby objects + potential mission destinations
- News image catalog
- News old archive & Small Objects Archive
- Object Links - mainly for radar targets & close passers - updated 20 Feb.
- Observing Campaigns
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 6 July '13
Two objects reported inside ten LD
There are two visitors reported passing within ten lunar distances (LD) of Earth today. 2013 NJ4 is inbound from 4.44 to 4.02 LD and 2013 NH4 comes its closest to Earth this time around, reaching 4.34 LD at 0512 UT.
This report was generated at 1402 UTC.
Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. 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 6 July '13
The MPC's NEO Confirmation Page has 31 listings
When last checked at 2316 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 31 objects listed. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 35 listings on the NEOCP today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.
New MPECs on 6 July '13
Minor Planet Electronic Circulars
As of last check at 2316 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2013-N19 time-stamped "06:02 UT" - Daily Orbit Update - see below
- MPEC 2013-N20 time-stamped "13:10 UT" - 2003 WY25
MPEC 2013-N20 - "13:10 UT" - 2003 WY25
- K03W25Y 2003 WY25 (Q=5.136 AU, Earth MOID=6.0 LD, H=21.1 ~204m) from Pan-STARRS 1 (PS1) (July 4.46-47p2), Marco Micheli on Mauna Kea (July 5.37p5), and Hidetaka Sato via iTelescope Obs. Siding Spring (July 5.72p3)
- Observations of recently (no longer) risk-listed objects
- K13L28Z 2013 LZ28 (small asteroid, arc=22 days, H=22.8 ~93m) from David Tholen's team on Mauna Kea (July 5.29p3)
- K13L16G 2013 LG16 (arc=28 days, H=19.3 ~467m) from Tholen team/Mauna Kea (July 5.28p3 at R=22.0-22.1)
- Observation campaigns (radar support, potential mission destinations)
- S5263 285263 1998 QE2 (radar) from Fabra Obs. (June 28.97-98p3)
- G3249 163249 2002 GT (PMD) from David Asher via Faulkes Telescope North (July 4.54-55p3)
-- Potential mission destinations list & ephemerides + NHATS -- Planetary radar schedules: Arecibo & Goldstone
- Observations of small asteroids (H>22.0)
- K13L07F 2013 LF7 (arc=30 days, H=22.1 ~129m) from Sandlot Obs. (July 6.18-20p2)
- Observations of other asteroidal objects
- K13N00V 2013 NV (arc=4 days, H=20.1 ~323m) from the Siding Spring Survey (SSS) (July 5.35p2)
- K13M06Y 2013 MY6 (i=52.2°, arc=14 days, H=17.9 ~891m) from Astronomical Research Obs. Westfield (July 5.23-24p3)
- K13M06W 2013 MW6 (arc=14 days, H=19.9 ~355m) from SSS (July 5.46p1)
- K13M06R 2013 MR6 (i=36.2°, Q=4.186 AU, arc=16 days, H=18.8 ~589m) from ARO Westfield (July 5.23-24p3)
- K13M05X 2013 MX5 (arc=17 days, H=18.9 ~562m) from Asher/Faulkes North (July 4.55p3) and ARO Westfield (July 5.36-37p3)
- K13L31K 2013 LK31 (arc=22 days, H=19.2 ~490m) from Bernezzo Obs. (July 5.88-90p4)
- K13L25H 2013 LH25 (Q=8.213 AU, arc=28 days, H=17.2 ~1.23 km) from Sandlot Obs. (July 6.15-17p3)
- K13J22R 2013 JR22 (arc=55 days, H=20.9 ~224m) from Tholen team/Mauna Kea (July 4.27-29p3 at R=23.4-8)
- K13G79Z 2013 GZ79 (arc=96 days, H=19.9 ~355m) from Petit Jean Mtn. South Obs. (PJMSO) (July 5.29p6)
- K10T54N 2010 TN54 (arc=3 opp, H=19.2 ~490m) from PJMSO (July 5.39-40p6)
- K07X09Y 2007 XY9 (arc=3 opp, H=21.1 ~204m) from PJMSO (July 5.31-32p8)
- K05M00C 2005 MC (Q=4.167 AU, arc=4 opp, H=16.5 ~1.70 km) from Santa Maria de Montmagastrell Obs. (July 6.07-08p3)
- K03O04B 2003 OB4 (Q=4.518 AU, arc=3 opp, H=19.2 ~490m) from Asher/Faulkes North (July 3.58p2)
- K01K02O 2001 KO2 (Q=4.018 AU, arc=4 opp, H=20.4 ~282m) from ARO Westfield (July 5.34-37p3 at V=22.1-2)
- a3790 363790 2005 JE46 from Fabra Obs. (June 29.99p2) and Asher/Faulkes North (July 4.56p2)
- Z4101 354101 2001 YF1 from Asher/Faulkes North (July 4.56p2)
- G2269 162269 1999 VO6 from Baxter Garden Obs. (July 5.95-96p3)
- 86666 86666 2000 FL10 from Baxter Garden Obs. (July 5.98-01p3)
- 52760 52760 1998 ML14 from Polo Astronomico CMF (July 5.18-23p3)
- 17188 17188 1999 WC2 from Fabra Obs. (June 29.95-96p3)
Observers on 6 July '13
Thirteen observers appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 4 in MPEC 2013-N19 -- 2013 MY6, 2013 MX5, 2013 MR6, 2001 KO2|
|I74||Baxter Garden Obs. in England, 2 in MPEC 2013-N19 -- 86666, 162269|
|C77||Bernezzo Obs. in Italy, 1 in MPEC 2013-N19 -- 2013 LK31|
|006||Fabra Obs. in Spain, 3 in MPEC 2013-N19 -- 363790, 285263, 17188|
|F655||David Asher in Northern Ireland via Faulkes Telescope North in Hawaii, 5 in MPEC 2013-N19 -- 2013 MX5, 2003 OB4, 363790, 354101, 163249|
|5682||David Tholen's team on Mauna Kea in Hawaii, 3 in MPEC 2013-N19 -- 2013 LZ28, 2013 LG16, 2013 JR22|
|568_||Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2013-N20 -- 2003 WY25|
|F51||Pan-STARRS 1 in Hawaii, 1 in MPEC 2013-N20 -- 2003 WY25|
|H45||Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2013-N19 -- 2013 GZ79, 2010 TN54, 2007 XY9|
|X57||Polo Astronomico CMF, 1 in MPEC 2013-N19 -- 52760|
|H36||Sandlot Obs. in Kansas, 2 in MPEC 2013-N19 -- 2013 LH25, 2013 LF7|
|B74||Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2013-N19 -- 2005 MC|
|E12||Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2013-N19 -- 2013 NV, 2013 MW6|
|Q621||Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-N20 -- 2003 WY25|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 6 July '13
Notes for Today's Latest Risk Assessments
|2013 NH6||NEODyS||1400||2058-2065||7||9.97e-06||-3.93||-3.96||0||NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2013-07-03.644 to 2013-07-05.452."|
|2013 NK4||NEODyS||1400||2051-2112||9||1.03e-07||-3.93||-4.45||0||NEODyS: "Based on 37 optical observations (of which 0 are rejected as outliers) from 2013-07-01.788 to 2013-07-04.280."|
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 6 July '13
Times are UTC for when items were noted or added by The Tracking News.
|1402||Generated Traffic Report|
|1400||Noted that NEODyS has posted 2013 NH6 as an impact risk - see above|
Noted that NEODyS has posted 2013 NK4 as an impact risk - see above
Grabbed MPEC 2013-N19 - Daily Orbit Update - see above
Grabbed MPEC 2013-N20 - 2003 WY25 - see above