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Contents  on 4 June '20

• IAU Minor Planet Center
  • NEOCP Activity -- 35 listings
  • New MPECs -- five MPECs
• Observers -- nineteen observers
• Impact Risk Monitoring -- four objects
• Chronology

Asteroid/Comet Connection (A/CC) Resources:

• Consolidated Risk Tables - the CRT page
    Of 1147 risk-listed objects, 880 have had news in the last 31 days. Updated at 2116 UTC on 4 June.
  
• Earth's Busy Neighborhood traffic page
• 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)

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

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.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

NEOCP Activity  on 4 June '20

The MPC's NEO Confirmation Page has 35 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 35 objects listed. Of these, 25 were "one nighters." So far The Tracking News has counted a total of 39 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.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

New MPECs  on 4 June '20

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been five MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

• MPEC 2020-L19 time-stamped "12:00 UT" - Daily Orbit Update - see below
• MPEC 2020-L20 time-stamped "15:52 UT" - 2016 TP120 - see below
• MPEC 2020-L21 time-stamped "16:09 UT" - 2016 TQ120 - see below
• MPEC 2020-L22 time-stamped "16:35 UT" - 2016 GA277 - see below
• MPEC 2020-L23 time-stamped "17:25 UT" - 2016 GB277

MPEC 2020-L23 - "17:25 UT" - 2016 GB277

• K16GR7B   2016 GB277 (q=39.997 AU, Q=118.972 AU, H=7.2 ~123 km) was picked up at 0706 UT on 10 April 2016 by Scott Sheppard on Mauna Kea, observing it at 2016 April 10.30p1 at r=25.5, 2016 April 10.40p1 at r=25.2, and 2016 April 10.55p1 at r=25.5. This detection was confirmed by program code 5 via Las Campanas Obs. (2016 May 3.12p1, 2016 May 3.23p1, 2017 April 22.22p1 at r=25.4, 2017 April 23.21p1 at r=25.3, 2018 March 11.22-23p2, 2018 March 11.29-30p2, 2018 March 12.21-22p2 at r=25.4 & 2018 March 12.33p1).

MPEC 2020-L22 - "16:35 UT" - 2016 GA277

• K16GR7A   2016 GA277 (q=35.901 AU, Q=280.527 AU, H=7.6 ~102 km) was picked up at 0800 UT on 10 April 2016 by Sheppard/Mauna Kea, observing it at 2016 April 10.33p1 at r=25.3 and 2016 April 10.59p1 at r=25.4. This detection was confirmed by Las Campanas Obs./code 5 (2016 May 3.19p1, 2016 May 3.24p1, 2017 March 1.31p1, 2017 March 1.35p1, 2017 April 26.17p1 at r=25.2, 2017 April 26.22p1 at r=25.1, 2018 March 11.34-38p3 at r=25.2 & 2018 March 12.35-38p2).

MPEC 2020-L21 - "16:09 UT" - 2016 TQ120

• K16TC0Q   2016 TQ120 (i=38.0°, q=42.271 AU, Q=114.370 AU, H=6.6 ~162 km) was picked up at 0906 UT on 6 Oct. 2016 by Scott Sheppard via Cerro Tololo Inter-American Obs. (CTIO), observing it at 2016 Oct. 6.38p1 at r=24.6 and 2016 Oct. 7.38p1 at r=24.7. This detection was confirmed by program code "." (23) via Las Campanas Obs. (2017 Nov. 22.08p1 at r=24.6, 2017 Nov. 23.06p1 at r=24.5, 2017 Dec. 16.13p1 & 2017 Dec. 17.14p1).

MPEC 2020-L20 - "15:52 UT" - 2016 TP120

• K16TC0P   2016 TP120 (q=39.954 AU, Q=302.122 AU, H=7.0 ~135 km) was picked up at 0838 UT on 7 Oct. 2016 by Sheppard/CTIO, observing it at 2016 Oct. 7.36p1 at r=25.0 and 2016 Oct. 8.30p1 at r=24.9. This detection was confirmed by Las Campanas Obs./code "." (23) (2017 Nov. 22.07p1 at r=24.9, 2017 Nov. 23.05p1 at r=24.5, 2017 Dec. 13.13p1 at r=25.1, 2017 Dec. 14.12p1 at r=25.0, 2017 Dec. 15.18p1 at r=25.0, 2019 Dec. 27.09-11p2, 2019 Dec. 27.15p1 & 2019 Dec. 28.10p1).

<< DOU on 4 June '20 >>  MPEC 2020-L19 - "12:00 UT" - Daily Orbit Update

• Observations of recently (no longer) risk-listed objects
• K20K03O   2020 KO3 (arc=16 days, H=20.1 ~323m) from Steward Obs. Mt. Lemmon Station (June 4.40-41p3)
• K20K03N   2020 KN3 (Q=5.232 AU, arc=17 days, H=19.6 ~407m) from Steward Mt. Lemmon Sta. (June 4.41-43p4)
• Observations of close-passing objects
• K20K07B   2020 KB7 (arc=5 days, H=27.5 ~11m, NHATS target) from Steward Mt. Lemmon Sta. (June 4.23p4)
• K20K04E   2020 KE4 (arc=23 days, H=25.3 ~29m) from Astronomical Research Obs. Westfield (June 3.11p5)
• K16F12Y   2016 FY12 (arc=18 days, H=26.0 ~21m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2016 April 13.44p2)
• Observation campaigns (NHATS targets, radar support)
• K20K05R   2020 KR5 (arc=10 days, H=22.3 ~117m, NHATS) from Steward Mt. Lemmon Sta. (June 4.39p4)
• G3693   163693 Atira (2003 CP20) (radar) from the Mt. Lemmon Survey (MLS) (June 3.16-17p4)
• 04179   4179 Toutatis (1989 AC) (radar) from ATLAS Mauna Loa (June 3.48-50p4)
• 02102   2102 Tantalus (1975 YA) (radar) from ATLAS Mauna Loa (June 3.53p3)
  -- NHATS target table   -- Planetary radar schedules: Arecibo & Goldstone
• Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
• K20K07A   2020 KA7 (arc=6 days, H=25.3 ~29m) from Steward Mt. Lemmon Sta. (June 4.32-33p4)
• K20K06S   2020 KS6 (i=49.0°, Q=4.083 AU, arc=6 days, H=22.7 ~98m) from ARO Westfield (June 3.13p3)
• K20K04G   2020 KG4 (Q=4.596 AU, arc=12 days, H=25.0 ~34m) from Steward Mt. Lemmon Sta. (June 4.32p4)
• K20K01Q   2020 KQ1 (arc=19 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (June 4.20-21p3)
• K20J00T   2020 JT (arc=34 days, H=22.3 ~117m) from Steward Mt. Lemmon Sta. (June 4.28-29p3)
• K20H10C   2020 HC10 (arc=36 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (June 4.33p3)
• K20H06H   2020 HH6 (arc=52 days, H=21.9 ~141m) from ARO Westfield (June 3.27-28p3)
• Observations of other objects
• K20K04N   2020 KN4 (arc=11 days, H=21.3 ~186m) from ARO Westfield (June 3.19-20p6), ATLAS Haleakala (June 3.46-50p4), and Steward Mt. Lemmon Sta. (June 4.32p4)
• K20K02D   2020 KD2 (arc=16 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (June 4.22-23p4)
• K20J00D   2020 JD (arc=34 days, H=20.0 ~339m) from Steward Mt. Lemmon Sta. (June 4.23p4)
• K20H10O   2020 HO10 (arc=43 days, H=21.5 ~170m) from Steward Mt. Lemmon Sta. (June 4.31p4)
• K20F03W   2020 FW3 (arc=75 days, H=21.1 ~204m) from Pan-STARRS 1 (PS1) (June 3.50-55p4) and Steward Mt. Lemmon Sta. (June 4.30p3)
• K17M00E   2017 ME (i=41.4°, arc=3 opp, H=17.9 ~891m) from ATLAS Mauna Loa (June 3.37-39p4)
• K16G01B   2016 GB1 (arc=2 opp, H=21.3 ~186m) from Tholen 2.24m (2016 April 13.43-44p2)
• K15FX2P   2015 FP332 (i=36.5°, Q=4.790 AU, arc=5 opp, H=17.3 ~1.17 km) from Steward Mt. Lemmon Sta. (June 4.40-41p4)
• K14L26Q   2014 LQ26 (Q=5.151 AU, arc=2 opp, H=18.2 ~776m) from WISE (May 27.71p1, 27.77p1, 27.84p1, 27.97p1, 28.03p1, 28.10p1, 28.16p2, 28.23p1, 28.36p1, 28.49p1, 28.62p1, 28.75p2, 28.88p1, 29.01p1, 29.28p1, 29.41p1 & 29.54p1)
• K10ED5C   2010 EC135 (arc=3 opp, H=20.3 ~295m) from ARO Westfield (June 3.14-15p5) and Golden Ears Obs. (June 4.24-26p3)
• K08Q11V   2008 QV11 (arc=4 opp, H=21.0 ~214m) from Steward Mt. Lemmon Sta. (June 4.39p4)
• K06U63D   2006 UD63 (arc=4 opp, H=18.9 ~562m) from Castelmartini Obs. (June 1.96-97p3)
• K06H00B   2006 HB (arc=4 opp, H=18.9 ~562m) from ATLAS Mauna Loa (June 3.43-45p4)
• J98M24R   1998 MR24 (arc=5 opp, H=19.3 ~467m) from PS1 (June 3.59-60p4)
• p3170   513170 2004 KH15 from Castelmartini Obs. (June 1.95-96p3) and ATLAS Mauna Loa (June 3.43p3)
• g0302   420302 2011 XZ1 from ATLAS Mauna Loa (June 3.47-48p3)
• c2503   382503 2001 RE8 from ATLAS Mauna Loa (June 3.43-45p3)
• a3617   363617 2004 KK17 from MLS (June 3.44-46p4)
• Y9063   349063 2006 XA from ATLAS Mauna Loa (June 3.49-51p8)
• X1471   331471 1984 QY1 from Bredenkamp Obs. (May 31.99-02p3) and ATLAS Haleakala (June 3.46-50p4)
• O2450   242450 2004 QY2 from LCO Sutherland Aqawan A#1 (June 3.04-08p8)
• N0979   230979 2005 AT42 from PS1 (June 3.59-61p4)
• I4990   184990 2006 KE89 from ARO Westfield (June 3.16-17p5), the Catalina Sky Survey (CSS) (June 3.33-35p4), and PS1 (June 3.46-48p3)
• G9675   169675 2002 JM97 from ATLAS Mauna Loa (June 3.39-41p4)
• G3250   163250 2002 GH1 from Pan-STARRS 2 (PS2) (June 3.57-60p4)
• G3243   163243 2002 FB3 from ATLAS Haleakala (June 3.27-29p4)
• F9929   159929 2005 UK from MLS (June 3.19-21p4)
• F9608   159608 2002 AC2 from ATLAS Haleakala (June 3.58-61p4)
• F4278   154278 2002 TB9 from CSS (June 3.18-20p4)
• F2756   152756 1999 JV3 from Castelmartini Obs. (June 2.00p3)
• E4861   144861 2004 LA12 from MLS (June 3.24-26p4)
• D8911   138911 2001 AE2 from ATLAS Mauna Loa (June 3.40-41p3)
• D8847   138847 2000 VE62 from ATLAS Haleakala (June 3.32-34p4)
• D7199   137199 1999 KX4 from Bredenkamp Obs. (May 31.95-99p3), ATLAS Haleakala (June 3.41-43p4), and program code 1 via Kuban State Univ. Obs. (June 3.75-82p35 & 3.86-93p28)
• D6874   136874 1998 FH74 from ATLAS Haleakala (June 3.41-43p4)
• A8906   108906 2001 PL9 from CSS (June 3.18-20p3)
• A6589   106589 2000 WN107 from CSS (June 3.23-24p4)
• 99935   99935 2002 AV4 from WISE (May 27.74p1) and ATLAS Mauna Loa (June 3.28-30p4)
• 90075   90075 2002 VU94 from ATLAS Haleakala (June 3.27-29p4)
• 86667   86667 2000 FO10 from ATLAS Haleakala (June 3.35-36p3)
• 86666   86666 2000 FL10 from PS2 (June 3.57-60p4)
• 86067   86067 1999 RM28 from MLS (June 3.24-26p4)
• 85989   85989 1999 JD6 from Castelmartini Obs. (June 2.03p2)
• 85713   85713 1998 SS49 from ATLAS Haleakala (June 3.26-28p4)
• 85184   85184 1991 JG1 from MLS (June 3.30-32p4) and CSS (June 3.33p2)
• 68350   68350 2001 MK3 from PS2 (June 3.42-43p2)
• 53430   53430 1999 TY16 from MLS (June 3.45-46p4)
• 20826   20826 2000 UV13 from WISE (May 27.91p1, 28.04p1, 28.17p1, 28.63p1, 28.69p1, 28.76p1, 29.02p1 & 29.15p1)
• 10860   10860 1995 LE from CSS (June 3.46p3)
• 07977   7977 1977 QQ5 from ATLAS Haleakala (June 3.48-49p4)
• 06239   6239 Minos (1989 QF) from SATINO-1 (2019 Dec. 24.92-93p3)
• 06053   6053 1993 BW3 from ATLAS Mauna Loa (June 3.49-51p4)
• 05751   5751 Zao (1992 AC) from ATLAS Mauna Loa (June 3.49-51p4)
• 04257   4257 Ubasti (1987 QA) from MLS (June 3.37-38p4)
• 04055   4055 Magellan (1985 DO2) from ATLAS Haleakala (June 3.58-61p4)
• 01981   1981 Midas (1973 EA) from MLS (June 3.16-17p4)
• 01627   1627 Ivar (1929 SH) from ATLAS Haleakala (June 3.28-30p4)

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Observers  on 4 June '20

Nineteen observers appear in today's MPECs.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

Impact Risk Monitoring  on 4 June '20

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

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.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

Chronology  on 4 June '20

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