Contents on 27 August '18
- Traffic Report -- four objects
- IAU Minor Planet Center
- Observers -- fourteen observers
- Impact Risk Monitoring -- nothing to report
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page
Of 953 risk-listed objects, 23 have had news in the last 31 days. Updated at 1432 UTC on 27 Aug.
- Ephemerides for risk-listed objects & close passers
- News archive (old) & news image catalog (discontinued)
- Object Links - mainly for radar targets & close passers (mostly discontinued)
- Observing Campaigns (old)
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. To keep track of what's new each day, watch the Chronology section.
Traffic Report on 27 August '18
Four objects reported inside ten LD
Four transient natural objects are known to be within ten lunar distances (LD) of Earth today. Nearest is inbound radar target 1998 SD9, which moves in from 6.97 to 5.26 LD.
|Neighborhood Traffic - sorted by Earth passage distance, grouped by 5.0 & 10.0 LD boundaries|
|Earth passage||I D||~Size||Distance today||Inside ten LD||Notes|
|2.80 LD Aug. 20||2018 QE||9 m||7.37 to 8.29 LD||Aug. 10 - 29||NHATS target, risk|
|4.22 LD Aug. 29||1998 SD9||49 m||5.26 from 6.97 LD||Aug. 25 - Sept. 2||radar target|
|7.80 LD Aug. 23||2018 PU23||8 m||7.87 to 7.92 LD||Aug. 7 - Sept. 13||NHATS target, risk|
|9.36 LD today||2018 LQ2||37 m||9.36 LD||Aug. 17 - Sept. 6||NHATS target, Earth closest at 2134 UTC - DOU|
|8.50 LD Sept. 20||2017 SL16||23 m||34.89 from 36.28 LD||Sept. 17 - 24||NHATS target|
This report was generated at 1740 UTC with follow-up in today's DOU MPEC for passing 2018 LQ2.
<< Reading: Osaka University has a news item about determining the age of 25143 Itokawa (1998 SF36) from particles gathered by the (first) JAXA Hayabusa mission, "finding that the parent body of Itokawa was formed about 4.6 billion years ago when the solar system was born [but has] a time evolution different from that of the parent body of LL chondrites" despite having mineralogy and geochemistry similar to those meteorites. You can read the related science paper at the journal Nature.
Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center. This puts a focus on some of the most important and very best NEO observation work, representative of the much larger NEO discovery and tracking effort. Object temporal distances are derived 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 27 August '18
The MPC's NEO Confirmation Page has 22 listings
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 22 objects listed. Of these, three were "one nighters." So far The Tracking News has counted a total of 25 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 27 August '18
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been two MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2018-Q73 time-stamped "11:07 UT" - 2003 TO9 - see below
- MPEC 2018-Q74 time-stamped "12:04 UT" - Daily Orbit Update
- Observations of recently (no longer) risk-listed objects
- K18P21K 2018 PK21 (small asteroid, arc=12 days, H=25.9 ~22m, NHATS target) from Astronomical Research Obs. Westfield (Aug. 23.23-25p2)
- Observations of close-passing objects
- K18L02Q 2018 LQ2 (arc=82 days, H=24.8 ~37m, NHATS target) from Pascoli Obs. (Aug. 26.85-86p3)
- Observations of small asteroids (H>22.0)
- K18P10V 2018 PV10 (Q=4.242 AU, arc=14 days, H=23.1 ~81m) from ARO Westfield (Aug. 23.32-34p3)
- K18P10L 2018 PL10 (arc=14 days, H=22.1 ~129m) from Castelmartini Obs. (Aug. 18.09-10p4)
- K18P08L 2018 PL8 (arc=16 days, H=22.8 ~93m) from Castelmartini Obs. (Aug. 15.87-88p3) and ARO Westfield (Aug. 23.11-12p3)
- Observations of other objects
- K18P23S 2018 PS23 (Q=4.018 AU, arc=14 days, H=21.6 ~162m) from ARO Westfield (Aug. 23.36-38p3)
- K18P22J 2018 PJ22 (Q=4.188 AU, arc=10 days, H=19.8 ~371m) from ARO Westfield (Aug. 23.38-40p3)
- K18P09L 2018 PL9 (Q=5.473 AU, arc=19 days, H=19.1 ~513m) from ARO Westfield (Aug. 23.18-19p3) and Pascoli Obs. (Aug. 26.89-90p3)
- K18N04N 2018 NN4 (Q=4.222 AU, arc=42 days, H=18.3 ~741m) from Castelmartini Obs. (Aug. 15.85p3) and ARO Westfield (Aug. 23.13-14p3)
- K18N00N 2018 NN (arc=49 days, H=20.3 ~295m) from ARO Westfield (Aug. 23.20-22p2)
- K18N00B 2018 NB (arc=2 opp, H=19.3 ~467m) from Castelmartini Obs. (Aug. 18.10p3)
- K18M08M 2018 MM8 (Q=4.197 AU, arc=60 days, H=19.1 ~513m) from Castelmartini Obs. (Aug. 18.08p3)
- K18M06S 2018 MS6 (arc=66 days, H=20.7 ~245m) from ARO Westfield (Aug. 23.27-28p2)
- K18K03E 2018 KE3 (arc=90 days, H=19.2 ~490m) from ARO Westfield (Aug. 23.28-31p7)
- K15O00H 2015 OH (arc=2 opp, H=19.9 ~355m) from Castelmartini Obs. (Aug. 15.86p3) and Schiaparelli Obs. (Aug. 26.92-94p3)
- K15D00P 2015 DP (i=59.5°, arc=3 opp, H=18.4 ~708m) from Schiaparelli Obs. (Aug. 26.98-99p2)
- K15A16X 2015 AX16 (arc=4 opp, H=18.0 ~851m) from Castelmartini Obs. (Aug. 18.08-09p3)
- K13E41P 2013 EP41 (arc=4 opp, H=19.2 ~490m) from SATINO-1 (Aug. 17.98p4)
- J99V11Q 1999 VQ11 (Q=4.483 AU, arc=5 opp, H=17.5 ~1.07 km) from Castelmartini Obs. (Aug. 18.11-12p3)
- J99R32B 1999 RB32 (arc=2 opp, H=20.2 ~309m) from Castelmartini Obs. (Aug. 18.05-06p3) and El Guijo Obs. (Aug. 27.08-09p3)
- p8635 518635 2008 HO3 from Squirrel Valley Obs. (Aug. 27.04-07p3)
- G2168 162168 1999 GT6 from Castelmartini Obs. (Aug. 18.06p3)
- D8847 138847 2000 VE62 from the Palomar Transient Factory (PTF) (Aug. 26.21-25p5)
- 86324 86324 1999 WA2 from Kalamazoo Obs. (Aug. 23.12-14p4)
- 68950 68950 2002 QF15 from Rand II Obs. (July 12.16-17p4, Aug. 11.07-08p4, 17.05-06p4, 21.04p4 & 24.04-05p4)
- 65706 65706 1992 NA from Castelmartini Obs. (Aug. 18.14p3)
- 18109 18109 2000 NG11 from Forti Obs. (Aug. 24.88p2)
- 13553 13553 Masaakikoyama (1992 JE) from Forti Obs. (Aug. 24.85-86p2)
- 09856 9856 1991 EE from Castelmartini Obs. (Aug. 18.13p3)
- 03552 3552 Don Quixote (1983 SA) from Castelmartini Obs. (Aug. 18.12p3)
- 00433 433 Eros (1898 DQ) from MASTER IAC Obs. (Aug. 25.21-22p5)
MPEC 2018-Q73 - "11:07 UT" - 2003 TO9
Observers on 27 August '18
Fourteen observers appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 10 in MPEC 2018-Q74 -- 2018 PV10, 2018 PS23, 2018 PL9, 2018 PL8, 2018 PK21, 2018 PJ22, 2018 NN4, 2018 NN, 2018 MS6, 2018 KE3|
|160||Castelmartini Obs. in Italy, 13 in MPEC 2018-Q74 -- 2018 PL8, 2018 PL10, 2018 NN4, 2018 NB, 2018 MM8, 2015 OH, 2015 AX16, 1999 VQ11, 1999 RB32, 65706, 162168, 9856, 3552|
|J27||El Guijo Obs. in Spain, 1 in MPEC 2018-Q74 -- 1999 RB32|
|K83||Forti Obs., 2 in MPEC 2018-Q74 -- 18109, 13553|
|W19||Kalamazoo Obs. in Michigan, 1 in MPEC 2018-Q74 -- 86324|
|Z22||MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2018-Q74 -- 433|
|I41||Palomar Transient Factory in southern California, 1 in MPEC 2018-Q74 -- 138847|
|K63||Pascoli Obs. in Italy, 2 in MPEC 2018-Q74 -- 2018 PL9, 2018 LQ2|
|W71||Rand II Obs. in New York, 1 in MPEC 2018-Q74 -- 68950|
|C95||SATINO-1 in France, 1 in MPEC 2018-Q74 -- 2013 EP41|
|204||Schiaparelli Obs. in Italy, 2 in MPEC 2018-Q74 -- 2015 OH, 2015 DP|
|W34||Squirrel Valley Obs. in North Carolina, 1 in MPEC 2018-Q74 -- 518635|
|T12||UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-Q73 -- 2003 TO9|
|T14||UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2018-Q73 -- 2003 TO9|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 27 August '18
At last check (NEODyS at 2358 UTC) there was no risk monitoring news to report yet today. Visit the CRT to view activity in the last four weeks and our ephemerides page for a complete list of risk-rated objects under current observation or having recent news.