Contents on 21 August '18
- Traffic Report -- five objects
- Radar Astrometry -- one object
- IAU Minor Planet Center
- Observers -- thirteen observers
- Impact Risk Monitoring -- nothing to report
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page
Of 952 risk-listed objects, 21 have had news in the last 31 days. Updated at 1430 UTC on 21 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 21 August '18
Five objects reported inside ten LD
There are five minor planets reported inside ten lunar distances (LD) of our planet today. The closest of these is risk-listed 2018 QE, which is outbound from 2.93 to 3.36 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 yesterday||2018 QE||9 m||2.93 to 3.36 LD||Aug. 10 - 29||NHATS target, risk|
|6.21 LD Aug. 9||2018 PN22||11 m||8.91 to 9.31 LD||July 25 - Aug. 23||NHATS target|
|7.80 LD Aug. 23||2018 PU23||8 m||7.82 from 7.86 LD||Aug. 7 - Sept. 13||NHATS target, risk|
|7.88 LD Aug. 18||2018 PK20||23 m||8.92 to 9.92 LD||Aug. 15 - 22||NHATS target|
|9.36 LD Aug. 27||2018 LQ2||37 m||9.57 from 9.64 LD||Aug. 17 - Sept. 6||NHATS target - DOU|
|4.22 LD Aug. 29||1998 SD9||49 m||18.09 from 20.45 LD||Aug. 25 - Sept. 2||radar target|
This report was generated at 1720 UTC with follow-up in today's DOU MPEC for inbound 2018 LQ2.
<< Reading: If you live around Glendale, Arizona, the American Meteor Society urges you to check your yard for meteorites from the poorly observed July 27th fireball. One has already been found "in a dense residential neighborhood."
The Seismological Society of America (SSA) has a news item at Phys.org about the January 17th bolide over Michigan that was caught "by infrasonic microphones and seismometers, offering a rare chance to compare these data with satellite and ground camera images," and notes that the data suggests "researchers should be able to detect about 15 events of this size or larger each year in eastern North America."
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.
Radar Astrometry on 21 August '18
Radar observation of one object
Data update noted at 1700 UTC when the database was dated 21 Aug.
- 2018 NE1 from Arecibo (July 21.32 velocity)
NEOCP Activity on 21 August '18
The MPC's NEO Confirmation Page has 53 listings
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 53 objects listed. Of these, 25 were "one nighters." So far The Tracking News has counted a total of 57 listings on the NEOCP today.
New MPECs on 21 August '18
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- Observations of close-passing objects
- K18L02Q 2018 LQ2 (arc=75 days, H=24.8 ~37m, NHATS target) from Astronomical Research Obs. Westfield (July 3.24-27p4)
- Observations of small asteroids (H>22.0)
- K18P10L 2018 PL10 (arc=12 days, H=22.1 ~129m) from Castelmartini Obs. (Aug. 19.13p4)
- K18P07W 2018 PW7 (arc=14 days, H=24.3 ~47m) from Landehen Obs. (Aug. 16.94-95p3)
- K18L15U 2018 LU15 (arc=53 days, H=23.5 ~68m) from McDonald Obs. (Aug. 7.42-43p3)
- Observations of other objects
- K18P20T 2018 PT20 (arc=11 days, H=21.7 ~155m) from Pan-STARRS 1 (PS1) (Aug. 19.52-56p4)
- K18P10J 2018 PJ10 (i=63.7°, Q=4.130 AU, arc=14 days, H=21.3 ~186m) from Landehen Obs. (Aug. 16.95-98p4) and Castelmartini Obs. (Aug. 19.02p4)
- K18N03U 2018 NU3 (Q=4.311 AU, arc=39 days, H=20.9 ~224m) from SONEAR (Aug. 20.20-22p3)
- K18N00B 2018 NB (arc=2 opp, H=19.3 ~467m) from Castelmartini Obs. (Aug. 19.13-14p3)
- K18M08M 2018 MM8 (Q=4.197 AU, arc=57 days, H=19.1 ~513m) from Castelmartini Obs. (Aug. 19.11p3) and ATLAS Haleakala (Aug. 20.58-62p4)
- K18K03E 2018 KE3 (arc=87 days, H=19.2 ~490m) from ATLAS Haleakala (Aug. 20.50-54p3)
- K15A16X 2015 AX16 (arc=4 opp, H=18.0 ~851m) from Castelmartini Obs. (Aug. 19.12p3)
- K13E41P 2013 EP41 (arc=4 opp, H=19.2 ~490m) from Castelmartini Obs. (Aug. 19.03-04p3)
- K01SH0C 2001 SC170 (arc=2 opp, H=20.3 ~295m) from Castelmartini Obs. (Aug. 19.01p3)
- J99V11Q 1999 VQ11 (Q=4.483 AU, arc=5 opp, H=17.5 ~1.07 km) from Castelmartini Obs. (Aug. 19.15p2)
- J99R32B 1999 RB32 (arc=2 opp, H=20.2 ~309m) from Castelmartini Obs. (Aug. 19.07-08p3), ATLAS Haleakala (Aug. 20.56-59p4), and MASTER-II Kislovodsk (Aug. 20.94p3)
- h9313 439313 2012 VE82 from WISE (Aug. 18.56p1, 18.62p1, 18.69p1, 18.82p1 & 18.95p1)
- h8429 438429 2006 WN1 from ATLAS Haleakala (Aug. 20.42-45p4) and El Guijo Obs. (Aug. 20.93-94p3)
- f8929 418929 2009 DM1 from Castelmartini Obs. (Aug. 19.02-03p3)
- b6788 376788 2000 RV37 from ATLAS Haleakala (Aug. 20.51-54p4)
- P3062 253062 2002 TC70 from ATLAS Haleakala (Aug. 20.59-62p4)
- G2168 162168 1999 GT6 from Castelmartini Obs. (Aug. 19.08p3) and ATLAS Haleakala (Aug. 20.54-59p8)
- E4332 144332 2004 DV24 from Terskol Obs. (Aug. 19.91-01p37)
- E0039 140039 2001 SO73 from Castelmartini Obs. (Aug. 19.06p3) and ATLAS Haleakala (Aug. 20.54-58p8)
- D6849 136849 1998 CS1 from ATLAS Haleakala (Aug. 20.58-62p6)
- 88263 88263 2001 KQ1 from WISE (Aug. 19.52p1, 19.66p1, 19.92p1, 20.05p1, 20.18p1, 20.31p1, 20.37p1 & 20.44p2)
- 87311 87311 2000 QJ1 from Castelmartini Obs. (Aug. 18.97-98p3)
- 65996 65996 1998 MX5 from SATINO-1 (July 5.95-96p4)
- 31345 31345 1998 PG from ATLAS Haleakala (Aug. 20.46-49p4)
- 21277 21277 1996 TO5 from ATLAS Haleakala (Aug. 20.46-49p5)
- 18109 18109 2000 NG11 from ATLAS Haleakala (Aug. 20.53-56p4)
- 17511 17511 1992 QN from ATLAS Haleakala (Aug. 20.57-60p4)
- 17274 17274 2000 LC16 from ATLAS Haleakala (Aug. 20.43-46p4)
- 17182 17182 1999 VU from ATLAS Haleakala (Aug. 20.51-54p4)
- 06456 6456 Golombek (1992 OM) from ATLAS Haleakala (Aug. 20.52-55p5)
- 05786 5786 Talos (1991 RC) from ATLAS Haleakala (Aug. 20.54-57p4)
- 04183 4183 Cuno (1959 LM) from ATLAS Haleakala (Aug. 20.49-52p4)
- 03552 3552 Don Quixote (1983 SA) from Castelmartini Obs. (Aug. 19.15-16p3)
- 00719 719 Albert (1911 MT) from WISE (Aug. 12.89p1, 13.02p2, 13.22p1, 13.28p1, 13.35p1, 13.42p1 & 13.48p1)
Observers on 21 August '18
Thirteen observers appear in today's MPEC.
|Code||Observer / observatory|
|251||Arecibo in Puerto Rico, 1 in radar -- 2018 NE1|
|H21||Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2018-Q40 -- 2018 LQ2|
|T05||ATLAS Haleakala in Hawaii, 18 in MPEC 2018-Q40 -- 2018 MM8, 2018 KE3, 1999 RB32, 438429, 376788, 31345, 253062, 21277, 18109, 17511, 17274, 17182, 162168, 140039, 136849, 6456, 5786, 4183|
|160||Castelmartini Obs. in Italy, 14 in MPEC 2018-Q40 -- 2018 PL10, 2018 PJ10, 2018 NB, 2018 MM8, 2015 AX16, 2013 EP41, 2001 SC170, 1999 VQ11, 1999 RB32, 87311, 418929, 162168, 140039, 3552|
|J27||El Guijo Obs. in Spain, 1 in MPEC 2018-Q40 -- 438429|
|Z43||Landehen Obs., 2 in MPEC 2018-Q40 -- 2018 PW7, 2018 PJ10|
|C41||MASTER-II Kislovodsk in Russia, 1 in MPEC 2018-Q40 -- 1999 RB32|
|711||McDonald Obs. in Texas, 1 in MPEC 2018-Q40 -- 2018 LU15|
|F51||Pan-STARRS 1 in Hawaii, 1 in MPEC 2018-Q40 -- 2018 PT20|
|C95||SATINO-1 in France, 1 in MPEC 2018-Q40 -- 65996|
|Y00||SONEAR in Brazil, 1 in MPEC 2018-Q40 -- 2018 NU3|
|B18||Terskol Obs. in Russia, 1 in MPEC 2018-Q40 -- 144332|
|C51||WISE in Earth polar orbit, 3 in MPEC 2018-Q40 -- 88263, 439313, 719|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 21 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.