Contents on 18 June '19
- Traffic Report -- four objects
- IAU Minor Planet Center
- Observers -- eighteen observers
- Impact Risk Monitoring -- two objects
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page
Of 1053 risk-listed objects, 20 have had news in the last 31 days. Updated at 1703 UTC on 18 June.
- 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 18 June '19
Four objects reported inside ten LD
Four visitors are reported inside ten lunar distances (LD) of our planet today. The nearest is within Earth's SOI. 2019 LU4 comes its closest to Earth this time around, reaching 1.97 LD.
|Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries|
|Earth passage||I D||~Size||Distance today||Inside ten LD||Notes|
|1.97 LD today||2019 LU4||17 m||1.97 LD||June 12 - 23||NHATS target, Earth closest at 0528 UTC|
|4.14 LD June 16||2019 LU||32 m||4.94 to 6.11 LD||June 11 - 21|
|5.59 LD June 14||2019 LL1||15 m||8.91 to 10.53 LD||June 10 - 18||exits ten LD|
|6.43 LD June 20||2019 LB2||14 m||6.48 from 6.61 LD||June 9 - 30||NHATS target|
|Approaching - sorted by 10-LD bubble entry date|
|9.7 LD June 23*||2019 LM1||24 m||12.6 from 13.9 LD||June 21 - 24||EPU +/- 15 mins.*|
|7.63 LD June 24||441987 2010 NY65||170 m||17.98 from 20.62 LD||June 22 - 26||radar target|
|5.2 LD June 29*||2019 LV1||25 m||16.0 from 17.3 LD||June 23 - July 6||EPU +/- 2.58 hours*, NHATS target|
|* EPU = Earth passage uncertainty|
This report was generated at 1740 UTC with follow-up in today's DOU MPEC for departed objects 2019 KA4 and risk-listed 2019 LA2.
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 18 June '19
The MPC's NEO Confirmation Page has 75 listings
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 75 objects listed. Of these, eleven were "one nighters." So far The Tracking News has counted a total of 85 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 18 June '19
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been nine MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2019-M21 time-stamped "01:26 UT" - Retraction of Orbit for 2019 KV6 - see below
- MPEC 2019-M22 time-stamped "11:54 UT" - Daily Orbit Update - see below
- MPEC 2019-M23 time-stamped "15:57 UT" - 2019 LD5 - see below
- MPEC 2019-M24 time-stamped "16:16 UT" - 2019 LE5 - see below
- MPEC 2019-M25 time-stamped "16:17 UT" - 2019 LF5 - see below
- MPEC 2019-M26 time-stamped "16:17 UT" - 2019 LG5 - see below
- MPEC 2019-M27 time-stamped "18:13 UT" - 2019 LH5 - see below
- MPEC 2019-M28 time-stamped "19:08 UT" - 2019 LJ5 - see below
- MPEC 2019-M29 time-stamped "20:56 UT" - 2019 LK5
MPEC 2019-M29 - "20:56 UT" - 2019 LK5
- K19L05K 2019 LK5 (H=19.0 ~537m) was picked up at 1025 UT on 6 June by the Mt. Lemmon Survey (MLS), observing it at June 6.43-47p8 and 9.42-43p3. This detection was confirmed by ESA Optical Ground Station (ESA OGS) (June 7.13-16p3) and Steward Obs. Mt. Lemmon Station (June 7.40p4 at G=21.4, 8.40-41p3 at G=21.2-4, 11.40-41p3 at G=20.6-9, 12.39-40p3 at G=21.0-22.3, 13.42-43p4 at G=20.3-9, 14.43-44p3 at G=19.7-20.7 & 15.42-43p3 at G=20.1-21.2).
MPEC 2019-M28 - "19:08 UT" - 2019 LJ5
- K19L05J 2019 LJ5 (small asteroid, H=24.4 ~45m) was picked up at 1033 UT on 9 June by Pan-STARRS 1 (PS1), observing it at May 30.36-38p3, June 2.40-43p3, and 9.44-48p4. This detection was confirmed by Pan-STARRS 2 (PS2) (June 1.37-40p4 & 8.42p1), Visnjan Obs. (June 10.00-01p4), and Astronomical Research Obs. Westfield (June 10.15-17p3).
MPEC 2019-M27 - "18:13 UT" - 2019 LH5
- K19L05H 2019 LH5 (Earth MOID=4.2 LD, H=20.5 ~269m) was picked up at 1028 UT on 6 June by MLS, observing it at June 6.44-45p4. This detection was confirmed by Steward Mt. Lemmon Sta. (June 6.46-47p3, 7.41p4, 8.39p4, 9.39p4, 11.42p3, 12.41-42p3, 13.44p4 & 15.44-45p4) and ESA OGS (June 7.18-19p3).
MPEC 2019-M26 - "16:17 UT" - 2019 LG5
- K19L05G 2019 LG5 (H=20.3 ~295m) was picked up at 1013 UT on 7 June by PS1, observing it at June 7.43-47p8 and 11.49-52p4. This detection was confirmed by PS2 (June 2.45-47p3), Steward Mt. Lemmon Sta. (June 8.26-27p4, 9.28-29p4, 12.34-36p3 & 13.29p2), Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (June 8.30-31p3), and ARO Westfield (June 11.20-22p3).
MPEC 2019-M25 - "16:17 UT" - 2019 LF5
- K19L05F 2019 LF5 (small asteroid, H=23.4 ~71m) was picked up at 1047 UT on 2 June by PS1, observing it at June 2.45-48p3 at w=21.7-9, 7.44-46p3 at w=21.5-23.1, and 11.49-52p3 at G=20.96-21.32. This detection was confirmed by Holmes/CTIO (June 8.24-25p3), the Spacewatch 0.9m telescope (June 8.38-42p3), the Spacewatch 1.8m telescope (June 9.40-41p3 at R=21.0-22.3 & 11.42p2 at R=21.2), and Steward Mt. Lemmon Sta. (June 13.24-25p3).
MPEC 2019-M24 - "16:16 UT" - 2019 LE5
- K19L05E 2019 LE5 (H=20.1 ~323m) was picked up at 1402 UT on 3 June by PS1, observing it at June 3.59-60p3. This detection was confirmed by ESA OGS (June 5.12-14p2 & 6.16-18p3), Holmes/CTIO (June 6.33-35p3), McDonald Obs. (June 6.39p3), Steward Mt. Lemmon Sta. (June 6.39-40p3 at G=21.2-9 & 15.41-42p4 at G=21.9-23.1), and Spacewatch via Kitt Peak Natl. Obs. (KPNO) (June 14.35-36p2).
MPEC 2019-M23 - "15:57 UT" - 2019 LD5
- K19L05D 2019 LD5 (small asteroid, H=23.2 ~78m) was picked up at 1139 UT on 10 June by PS2, observing it at June 10.49-52p4 and 11.56-57p2. This detection was confirmed by PS1 (May 30.56-60p4 at G=21.9-23.0, June 3.52-54p2 at G=21.6-7 & 11.53-55p3 at w=21.6-7) and ARO Westfield (June 11.30p2).
- Observations of risk-listed objects
- K19L02A 2019 LA2 (small asteroid, arc=8 days, H=26.7 ~15m, close passer) from UH/Tholen NEO Follow-Up 2.24m Telescope (June 11.34p2 at G=22.75-23.04)
- K16J38T 2016 JT38 (Q=4.174 AU, arc=9 days, H=20.2 ~309m) from program code "%" (14) via DECam (2016 April 26.23p1)
- Observations of close-passing objects
- K19K04A 2019 KA4 (arc=11 days, H=26.1 ~20m) from MLS (June 9.40-42p2)
- Observations of small asteroids (H>22.0)
- K19L00N 2019 LN (arc=6 days, H=22.7 ~98m) from Dettelbach Vineyard Obs. (June 6.02p3) and Steward Mt. Lemmon Sta. (June 6.37p3 & 7.29p3)
- K19E01C 2019 EC1 (arc=13 days, H=23.5 ~68m) from SATINO-1 (March 12.02-03p2)
- K11H00P 2011 HP (arc=2 opp, H=22.1 ~129m) from Northolt Branch Obs. (May 31.99p1)
- Observations of other objects
- K19J07X 2019 JX7 (arc=33 days, H=21.5 ~170m) from MLS (June 13.27-29p4)
- K19J02W 2019 JW2 (arc=39 days, H=21.6 ~162m) from MLS (June 9.27-29p4)
- K18X00V 2018 XV (arc=193 days, H=19.9 ~355m) from Steward Mt. Lemmon Sta. (June 15.35-36p3)
- K14Y43V 2014 YV43 (Q=5.170 AU, arc=2 opp, H=18.2 ~776m) from MLS (June 9.36-37p4)
- K14HH8S 2014 HS178 (Q=4.591 AU, arc=2 opp, H=20.1 ~323m) from ARO Westfield (June 11.20-24p3 at V=22.1-4)
- K08L16W 2008 LW16 (arc=2 opp, H=19.9 ~355m) from SATINO-1 (June 16.03-04p3)
- K06K00E 2006 KE (arc=3 opp, H=19.5 ~426m) from MLS (June 13.35-37p4)
- K06F00J 2006 FJ (arc=3 opp, H=20.3 ~295m) from ARO Westfield (June 11.28-30p3 at V=22.0-22.1)
- K05G00K 2005 GK (arc=5 opp, H=20.3 ~295m) from MLS (June 9.16-18p3)
- r3671 533671 2014 LJ21 from MLS (June 14.16-18p4)
- n1567 491567 2012 RG3 from MLS (June 14.21-22p4)
- m3563 483563 2004 BD68 from MLS (June 14.23-25p4)
- m1985 481985 2009 KM7 from MLS (June 13.43-44p4)
- j0293 450293 2004 LV3 from MLS (June 11.42-43p4)
- a6733 366733 2004 BG121 from MLS (June 13.33-35p4)
- W6742 326742 2003 QN47 from WISE (June 15.07p1, 15.33p1, 15.40p1, 15.66p2, 15.73p1, 15.79p1, 15.92p1, 15.99p1, 16.25p1, 16.31p1, 16.45p1, 16.58p1, 16.71p1, 16.77p1, 16.90p1, 16.97p1, 17.03p1, 17.30p1, 17.36p1 & 17.43p1)
- G3696 163696 2003 EB50 from WISE (June 14.05p1)
- G2082 162082 1998 HL1 from MLS (June 9.41-42p3)
- F9609 159609 2002 AQ3 from MLS (June 13.33-35p4)
- F3814 153814 2001 WN5 from WISE (June 16.53p1, 16.66p1, 16.79p1, 17.12p1 & 17.25p1)
- 87025 87025 2000 JT66 from MLS (June 9.25-27p4)
- 26166 26166 1995 QN3 from WISE (June 14.07p1, 14.21p1 & 14.34p1)
- 12538 12538 1998 OH from MLS (June 9.20-22p4)
- 05879 5879 Almeria (1992 CH1) from MLS (June 14.25-27p4)
- 01036 1036 Ganymed (1924 TD) from WISE (June 16.66p1, 16.79p1, 17.05p1, 17.12p1, 17.19p1 & 17.25p1)
- 00887 887 Alinda (1918 DB) from MLS (June 11.38-40p4)
MPEC 2019-M21 - "01:26 UT" - Retraction of Orbit for 2019 KV6
- K19K06V 2019 KV6
Observers on 18 June '19
Eighteen observers appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2019-M22, 2019-M23, 2019-M26 & 2019-M28 -- 2019 LJ5, 2019 LG5, 2019 LD5, 2014 HS178, 2006 FJ|
|807|||Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2019-M24, 2019-M25 & 2019-M26 -- 2019 LG5, 2019 LF5, 2019 LE5|
|W84%||program code "%" (14) via DECam in Chile, 1 in MPEC 2019-M22 -- 2016 JT38|
|K87||Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2019-M22 -- 2019 LN|
|J04||ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPECs 2019-M24, 2019-M27 & 2019-M29 -- 2019 LK5, 2019 LH5, 2019 LE5|
|695^||Spacewatch via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2019-M24 -- 2019 LE5|
|711||McDonald Obs. in Texas, 1 in MPEC 2019-M24 -- 2019 LE5|
|G96||Mt. Lemmon Survey (MLS) in Arizona, 20 in MPECs 2019-M22, 2019-M27 & 2019-M29 -- 2019 LK5, 2019 LH5, 2019 KA4, 2019 JX7, 2019 JW2, 2014 YV43, 2006 KE, 2005 GK, 87025, 533671, 491567, 483563, 481985, 450293, 366733, 162082, 159609, 12538, 5879, 887|
|Z80||Northolt Branch Obs. in England, 1 in MPEC 2019-M22 -- 2011 HP|
|F51||Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2019-M23, 2019-M24, 2019-M25, 2019-M26 & 2019-M28 -- 2019 LJ5, 2019 LG5, 2019 LF5, 2019 LE5, 2019 LD5|
|F52||Pan-STARRS 2 (PS2) in Hawaii, 3 in MPECs 2019-M23, 2019-M26 & 2019-M28 -- 2019 LJ5, 2019 LG5, 2019 LD5|
|C95||SATINO-1 in France, 2 in MPEC 2019-M22 -- 2019 EC1, 2008 LW16|
|691||Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2019-M25 -- 2019 LF5|
|291||Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2019-M25 -- 2019 LF5|
|I52||Steward Obs. Mt. Lemmon Station in Arizona, 7 in MPECs 2019-M22, 2019-M24, 2019-M25, 2019-M26, 2019-M27 & 2019-M29 -- 2019 LN, 2019 LK5, 2019 LH5, 2019 LG5, 2019 LF5, 2019 LE5, 2018 XV|
|T12||UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2019-M22 -- 2019 LA2|
|L01||Visnjan Obs., 1 in MPEC 2019-M28 -- 2019 LJ5|
|C51||WISE in Earth polar orbit, 5 in MPEC 2019-M22 -- 326742, 26166, 163696, 153814, 1036|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 18 June '19
Notes for Today's Latest Risk Assessments
|2019 LA2||JPL Sentry||1703||2094-2116||7||1.364889e-06||-6.83||-7.27||0||JPL #2 for the day: Computed at 09:04 today Pacific time based on 35 observations spanning 8.2217 days (2019-Jun-04.23363 to 2019-Jun-12.45534). Diameter approximately 0.016 km. from weighted mean H=26.61.|
|NEODyS||1530||2094-2117||14||3.47e-06||-6.43||-6.81||0||NEODyS: "Based on 31 optical observations (of which 2 are rejected as outliers) from 2019-06-04.234 to 2019-06-11.345."|
|2016 JT38||JPL Sentry||1530||2101-2103||2||1.8075e-07||-4.51||-4.61||0||JPL: Computed at 05:58 today Pacific time based on 19 observations spanning 9.0741 days (2016-Apr-26.23238 to 2016-May-05.30645). Diameter approximately 0.312 km. from weighted mean H=20.19.|
|NEODyS||1530||2078-2101||3||1.19e-07||-4.60||-5.03||0||NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2016-04-26.233 to 2016-05-05.307."|
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 18 June '19
Times are UTC for when items were noted or added by The Tracking News.
|2243||Grabbed MPEC 2019-M27 - 2019 LH5 - see above|
Grabbed MPEC 2019-M28 - 2019 LJ5 - see above
Grabbed MPEC 2019-M29 - 2019 LK5 - see above
|1740||Generated Traffic Report|
|1703||Noted that JPL Sentry has updated its 2019 LA2 risk assessment - see above|
Grabbed MPEC 2019-M24 - 2019 LE5 - see above
Grabbed MPEC 2019-M25 - 2019 LF5 - see above
Grabbed MPEC 2019-M26 - 2019 LG5 - see above
|1601||Grabbed MPEC 2019-M23 - 2019 LD5 - see above|
|1530||Noted that JPL Sentry has updated its 2016 JT38 risk assessment - see above|
Noted that NEODyS has updated its 2016 JT38 risk assessment - see above
Noted that JPL Sentry has updated its 2019 LA2 risk assessment - see above
Noted that NEODyS has updated its 2019 LA2 risk assessment - see above
Grabbed MPEC 2019-M22 - Daily Orbit Update - see above
|0333||Grabbed MPEC 2019-M21 - Retraction of Orbit for 2019 KV6 - see above|