Contents on 10 May '19
- Traffic Report -- twelve objects
- IAU Minor Planet Center
- Observers -- seventeen observers
- Impact Risk Monitoring -- one object
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page
Of 1051 risk-listed objects, 96 have had news in the last 31 days. Updated at 1631 UTC on 10 May.
- 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 10 May '19
Twelve objects reported inside ten LD
There are twelve minor objects reported within ten lunar distances (LD) of our home world today. The nearest is within Earth's sphere of gravitational influence. Newly announced risk-listed 2019 JJ3 passes the Moon at 1.05 LD and misses us by 1.96 LD.
|Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries|
|0.38 LD May 5||2019 JY2||4 m||7.49 to 9.24 LD||April 29 - tomorrow||intruder, NHATS target, risk|
|1.96 LD today*||2019 JJ3||11 m||1.96 LD||May 6 - 15|| NEW, EPU +/- 8 mins.*, Moon closest 1.05 LD at 1354 |
UTC, Earth closest at 1737 UTC, risk - MPEC
|2.47 LD May 5||2019 JE||20 m||7.22 to 8.75 LD||April 29 - tomorrow|
|3.1 LD May 13*||2019 JK3||16 m||7.7 from 9.9 LD||yesterday - May 17||NEW, EPU +/- 9 mins.* - MPEC|
|3.64 LD May 12||2019 JO2||25 m||5.00 from 6.90 LD||May 8 - 16|
|3.92 LD yesterday||2019 JM||14 m||4.00 to 4.64 LD||May 4 - 14||NHATS target|
|4.14 LD May 17||2012 KT12||19 m||7.24 from 8.00 LD||May 7 - 27||NHATS target|
|4.69 LD April 27||2019 GF1||10 m||6.88 to 7.18 LD||April 7 - May 19||NHATS target|
|6.09 LD May 17||2019 GT1||34 m||8.65 from 9.28 LD||May 8 - 26||NHATS target|
|6.16 LD May 12||2018 VX8||112 m||7.79 from 10.28 LD||today - May 14||enters ten LD|
|6.43 LD today||2019 JN3||13 m||6.43 LD||May 4 - 15||NEW, NHATS target, Earth closest at 0022 UTC - MPEC|
|7.04 LD May 15||2019 JN2||25 m||9.39 from 10.47 LD||today - May 19||NHATS target, enters ten LD|
|* EPU = Earth passage uncertainty|
This report was generated at 1850 UTC with four new discoveries, all in the active traffic tables immediately above/below, and with follow-up reported in today's DOU MPEC for departed objects 2019 JV1 and 2019 JJ and for distant 2011 LT17.
|Approaching - sorted by 10-LD bubble entry date|
|5.57 LD May 17||2019 JG1||15 m||12.39 from 14.05 LD||May 12 - 21||NHATS target|
|2.5 LD May 20*||2019 JL3||35 m||18.5 from 20.5 LD||May 15 - 25||NEW, EPU +/- 2.98 hours* - MPEC|
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. "Distant" is used here to describe an object that has come within ten LD since A/CC began this traffic reporting (2007) but is not now so close. 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 10 May '19
The MPC's NEO Confirmation Page has 132 listings
When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 132 objects listed. Of these, 59 were "one nighters." So far The Tracking News has counted a total of 151 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 10 May '19
Minor Planet Electronic Circulars
As of last check at 2358 UTC, there have been eleven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2019-J79 time-stamped "03:51 UT" - 2019 JG3 - see below
- MPEC 2019-J80 time-stamped "03:56 UT" - 2019 JH3 - see below
- MPEC 2019-J81 time-stamped "04:01 UT" - 2019 JJ3 - see below
- MPEC 2019-J82 time-stamped "04:05 UT" - 2019 JK3 - see below
- MPEC 2019-J83 time-stamped "04:10 UT" - 2019 JL3 - see below
- MPEC 2019-J84 time-stamped "04:15 UT" - 2019 JM3 - see below
- MPEC 2019-J85 time-stamped "04:19 UT" - 2019 JN3 - see below
- MPEC 2019-J86 time-stamped "04:24 UT" - 2019 JO3 - see below
- MPEC 2019-J87 time-stamped "04:29 UT" - 2019 JP3 - see below
- MPEC 2019-J88 time-stamped "12:05 UT" - Daily Orbit Update - see below
- MPEC 2019-J89 time-stamped "20:49 UT" - 2015 TL145
MPEC 2019-J89 - "20:49 UT" - 2015 TL145
- K15TE5L 2015 TL145 (Q=4.124 AU, H=19.3 ~467m) from Pan-STARRS 1 (PS1) (May 7.40-44p4 at w=22.1-5) and Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (May 10.15-16p3)
- Observations of recently (no longer) risk-listed objects
- K19J01L 2019 JL1 (small asteroid, arc=7 days, H=22.4 ~112m) from Holmes/CTIO (May 9.02-03p3)
- K19H02O 2019 HO2 (small asteroid, arc=13 days, H=24.4 ~45m) from Astronomical Research Obs. Westfield (May 7.16-17p3 at V=22.1-4)
- Observations of close-passing objects
- K19J01V 2019 JV1 (arc=7 days, H=22.9 ~89m) from Holmes/CTIO (May 9.13p3)
- K19J00J 2019 JJ (arc=7 days, H=28.0 ~9m, NHATS target) from ARO Westfield (May 7.18-20p3 at V=22.1-4)
- K11L17T 2011 LT17 (arc=4 opp, H=21.6 ~162m) from ARO Westfield (May 7.13-15p3 at V=22.1-5)
- Observation campaigns (NHATS targets, radar support)
- K19J01F 2019 JF1 (arc=8 days, H=23.6 ~65m, NHATS) from Holmes/CTIO (May 9.29-30p3)
-- NHATS target table
- Observations of small asteroids (H>22.0)
- K19J01N 2019 JN1 (arc=7 days, H=23.9 ~56m) from Holmes/CTIO (May 9.13-15p3)
- K19H00O 2019 HO (arc=16 days, H=23.9 ~56m) from Holmes/CTIO (May 9.14-15p3)
- K19G19Q 2019 GQ19 (arc=27 days, H=24.4 ~45m) from ARO Westfield (May 7.22-23p3 at V=22.0-22.3)
- K19G01R 2019 GR1 (arc=36 days, H=23.8 ~59m) from Holmes/CTIO (May 9.17-19p3 at V=22.0-22.1)
- K19A05D 2019 AD5 (Q=4.300 AU, arc=35 days, H=22.9 ~89m) from ARO Westfield (Jan. 6.15-16p5)
- Observations of other objects
- K19J01K 2019 JK1 (arc=7 days, H=20.0 ~339m) from Holmes/CTIO (May 9.00-01p3)
- K19J01B 2019 JB1 (arc=8 days, H=20.9 ~224m) from Steward Obs. Mt. Lemmon Station (May 9.43-45p4)
- K19C00E 2019 CE (arc=97 days, H=21.0 ~214m) from the Zwicky Transient Facility (ZTF) (May 9.41-44p4)
- K18X05G 2018 XG5 (arc=147 days, H=20.1 ~323m) from Northolt Branch Obs. (May 8.95-99p10)
- K15TZ1T 2015 TT351 (arc=2 opp, H=20.7 ~245m) from ARO Westfield (May 7.13-14p3 at V=22.2-5)
- K14L21J 2014 LJ21 (q=0.302 AU, Q=5.478 AU, arc=5 opp, H=16.1 ~2.04 km) from ZTF (May 9.18-20p4)
- j5736 455736 2005 HC3 from ZTF (May 9.40p1 & 9.44-46p3)
- i1825 441825 2009 SK1 from ZTF (May 9.39-47p13)
- Y8776 348776 2006 KZ37 from ZTF (May 9.22-24p4)
- H3561 173561 2000 YV137 from ZTF (May 9.40-47p5)
- G3081 163081 2002 AG29 from ZTF (May 9.47-49p4)
- G3000 163000 2001 SW169 from WISE (May 4.88p2, 5.47p1, 5.73p1, 5.80p2, 5.86p1, 5.99p1 & 6.26p2)
- D7170 137170 1999 HF1 from ZTF (May 9.18-20p4)
- 88263 88263 2001 KQ1 from WISE (May 5.40p1, 5.53p1, 5.59p1, 5.66p1, 5.72p1, 5.79p1, 6.38p2, 6.64p1 & 6.77p1)
- 05879 5879 Almeria (1992 CH1) from ZTF (May 9.30p1 & 9.42-46p3)
MPEC 2019-J87 - "04:29 UT" - 2019 JP3
- K19J03P 2019 JP3 (small asteroid, H=24.4 ~45m) was picked up at 1302 UT on 8 May by PS1, observing it at May 8.54-59p3. This detection was confirmed by the Spacewatch 1.8m telescope (May 9.24p3) and Visnjan Obs. (May 10.02p3).
MPEC 2019-J86 - "04:24 UT" - 2019 JO3
- K19J03O 2019 JO3 (small asteroid, H=24.5 ~43m) was picked up at 1019 UT on 8 May by the Mt. Lemmon Survey (MLS), observing it at May 8.43-48p8 and 9.42-44p3. This detection was confirmed by Steward Mt. Lemmon Sta. (May 9.40p4), Visnjan Obs. (May 10.04-05p4), and Great Shefford Obs. (May 10.06p2).
MPEC 2019-J85 - "04:19 UT" - 2019 JN3
- K19J03N 2019 JN3 (Earth MOID=6.4 LD, H=27.1 ~13m, NHATS target) was picked up at 0821 UT on 8 May by MLS, observing it at May 8.35-36p4. This detection was confirmed by Steward Mt. Lemmon Sta. (May 8.43-46p7 & 9.36p3), GiaGa Obs. (May 9.94-97p3), and Visnjan Obs. (May 9.94p5).
MPEC 2019-J84 - "04:15 UT" - 2019 JM3
- K19J03M 2019 JM3 (small asteroid, Earth MOID=9.2 LD, H=25.1 ~32m) was picked up at 0821 UT on 8 May by MLS, observing it at May 8.35-36p3 and 9.33-35p3. This detection was confirmed by Steward Mt. Lemmon Sta. (May 8.43-45p7 & 9.35-36p4), GiaGa Obs. (May 9.87-91p3), Visnjan Obs. (May 9.93p4), and Great Shefford Obs. (May 10.00p3).
MPEC 2019-J83 - "04:10 UT" - 2019 JL3
- K19J03L 2019 JL3 (Earth MOID=1.2 LD, H=25.0 ~34m) was picked up at 0746 UT on 8 May by MLS, observing it at May 8.32-34p4. This detection was confirmed by Steward Mt. Lemmon Sta. (May 8.41-45p7 & 9.35-36p4), the Spacewatch 0.9m telescope (May 9.33-34p3), Dave Balam via Plaskett 1.8m Telescope (May 9.33-34p5), and Pascoli Obs. (May 9.89-92p5).
MPEC 2019-J82 - "04:05 UT" - 2019 JK3
- K19J03K 2019 JK3 (Earth MOID=3.1 LD, H=26.6 ~16m) was picked up at 0645 UT on 8 May by MLS, observing it at May 8.28-30p4. This detection was confirmed by Steward Mt. Lemmon Sta. (May 8.36-40p7 & 9.41-43p4), Holmes/CTIO (May 9.07-09p3), and Pascoli Obs. (May 9.85-86p3).
MPEC 2019-J81 - "04:01 UT" - 2019 JJ3
- K19J03J 2019 JJ3 (risk listed, Earth MOID=0.2 LD, H=27.5 ~11m, close passer) was picked up at 0517 UT on 8 May by MLS, observing it at May 8.22-24p3. This detection was confirmed by Steward Mt. Lemmon Sta. (May 8.28-33p7 & 9.29p3).
MPEC 2019-J80 - "03:56 UT" - 2019 JH3
- K19J03H 2019 JH3 (small asteroid, H=25.3 ~29m) was picked up at 0934 UT on 7 May by PS1, observing it at May 7.40-43p3 and 9.34-37p3. This detection was confirmed by Schwarzschild Obs. (May 7.95-96p8), ARO Westfield (May 8.19-20p3), and Steward Mt. Lemmon Sta. (May 8.27-28p3).
MPEC 2019-J79 - "03:51 UT" - 2019 JG3
- K19J03G 2019 JG3 (borderline-small, H=21.8 ~148m) was picked up at 0848 UT on 7 May by PS1, observing it at May 7.37-39p3 and 9.50-53p4. This detection was confirmed by Schwarzschild Obs. (May 7.90-91p4), Visnjan Obs. (May 7.97p3), Steward Mt. Lemmon Sta. (May 8.23-24p4), ARO Westfield (May 8.24-25p3), and Vegaquattro Obs. (May 9.84-86p3).
Observers on 10 May '19
Seventeen observers appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2019-J79, 2019-J80 & 2019-J88 -- 2019 JJ, 2019 JH3, 2019 JG3, 2019 HO2, 2019 GQ19, 2019 AD5, 2015 TT351, 2011 LT17|
|807|||Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPECs 2019-J82, 2019-J88 & 2019-J89 -- 2019 JV1, 2019 JN1, 2019 JL1, 2019 JK3, 2019 JK1, 2019 JF1, 2019 HO, 2019 GR1, 2015 TL145|
|203||GiaGa Obs. in Italy, 2 in MPECs 2019-J84 & 2019-J85 -- 2019 JN3, 2019 JM3|
|J95||Great Shefford Obs. in England, 2 in MPECs 2019-J84 & 2019-J86 -- 2019 JO3, 2019 JM3|
|G96||Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2019-J81, 2019-J82, 2019-J83, 2019-J84, 2019-J85 & 2019-J86 -- 2019 JO3, 2019 JN3, 2019 JM3, 2019 JL3, 2019 JK3, 2019 JJ3|
|Z80||Northolt Branch Obs. in England, 1 in MPEC 2019-J88 -- 2018 XG5|
|F51||Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2019-J79, 2019-J80, 2019-J87 & 2019-J89 -- 2019 JP3, 2019 JH3, 2019 JG3, 2015 TL145|
|K63||Pascoli Obs. in Italy, 2 in MPECs 2019-J82 & 2019-J83 -- 2019 JL3, 2019 JK3|
|6581||Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2019-J83 -- 2019 JL3|
|033||Schwarzschild Obs. in Germany, 2 in MPECs 2019-J79 & 2019-J80 -- 2019 JH3, 2019 JG3|
|691||Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2019-J83 -- 2019 JL3|
|291||Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2019-J87 -- 2019 JP3|
|I52||Steward Obs. Mt. Lemmon Station in Arizona, 9 in MPECs 2019-J79, 2019-J80, 2019-J81, 2019-J82, 2019-J83, 2019-J84, 2019-J85, 2019-J86 & 2019-J88 -- 2019 JO3, 2019 JN3, 2019 JM3, 2019 JL3, 2019 JK3, 2019 JJ3, 2019 JH3, 2019 JG3, 2019 JB1|
|K41||Vegaquattro Obs. in Italy, 1 in MPEC 2019-J79 -- 2019 JG3|
|L01||Visnjan Obs., 5 in MPECs 2019-J79, 2019-J84, 2019-J85, 2019-J86 & 2019-J87 -- 2019 JP3, 2019 JO3, 2019 JN3, 2019 JM3, 2019 JG3|
|C51||WISE in Earth polar orbit, 2 in MPEC 2019-J88 -- 88263, 163000|
|I41||Zwicky Transient Facility (ZTF) in southern California, 9 in MPEC 2019-J88 -- 2019 CE, 2014 LJ21, 455736, 441825, 348776, 173561, 163081, 137170, 5879|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 10 May '19
Notes for Today's Latest Risk Assessments
|2019 JJ3||NEODyS||1630||2043-2054||3||3.83e-08||-8.40||-8.51||0||NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2019-05-08.221 to 2019-05-09.292."|
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 10 May '19
Times are UTC for when items were noted or added by The Tracking News.
|2133||Grabbed MPEC 2019-J89 - 2015 TL145 - see above|
|1850||Generated Traffic Report|
|1630||Noted that NEODyS has posted 2019 JJ3 as an impact risk - see above|
Grabbed MPEC 2019-J88 - Daily Orbit Update - see above
|0444||Grabbed MPEC 2019-J79 - 2019 JG3 - see above|
Grabbed MPEC 2019-J80 - 2019 JH3 - see above
Grabbed MPEC 2019-J81 - 2019 JJ3 - see above
Grabbed MPEC 2019-J82 - 2019 JK3 - see above
Grabbed MPEC 2019-J83 - 2019 JL3 - see above
Grabbed MPEC 2019-J84 - 2019 JM3 - see above
Grabbed MPEC 2019-J85 - 2019 JN3 - see above
Grabbed MPEC 2019-J86 - 2019 JO3 - see above
Grabbed MPEC 2019-J87 - 2019 JP3 - see above