Contents  on 10 May '19

Asteroid/Comet Connection (A/CC) Resources:

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

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-J89 - "20:49 UT" - 2015 TL145


<< DOU on 10 May '19 >>  MPEC 2019-J88 - "12:05 UT" - Daily Orbit Update


MPEC 2019-J87 - "04:29 UT" - 2019 JP3


MPEC 2019-J86 - "04:24 UT" - 2019 JO3


MPEC 2019-J85 - "04:19 UT" - 2019 JN3


MPEC 2019-J84 - "04:15 UT" - 2019 JM3


MPEC 2019-J83 - "04:10 UT" - 2019 JL3


MPEC 2019-J82 - "04:05 UT" - 2019 JK3


MPEC 2019-J81 - "04:01 UT" - 2019 JJ3


MPEC 2019-J80 - "03:56 UT" - 2019 JH3


MPEC 2019-J79 - "03:51 UT" - 2019 JG3

Observers  on 10 May '19

Seventeen observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical 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
203GiaGa Obs. in Italy, 2 in MPECs 2019-J84 & 2019-J85 -- 2019 JN3, 2019 JM3
J95Great Shefford Obs. in England, 2 in MPECs 2019-J84 & 2019-J86 -- 2019 JO3, 2019 JM3
G96Mt. 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
Z80Northolt Branch Obs. in England, 1 in MPEC 2019-J88 -- 2018 XG5
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2019-J79, 2019-J80, 2019-J87 & 2019-J89 -- 2019 JP3, 2019 JH3, 2019 JG3, 2015 TL145
K63Pascoli Obs. in Italy, 2 in MPECs 2019-J82 & 2019-J83 -- 2019 JL3, 2019 JK3
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2019-J83 -- 2019 JL3
033Schwarzschild Obs. in Germany, 2 in MPECs 2019-J79 & 2019-J80 -- 2019 JH3, 2019 JG3
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2019-J83 -- 2019 JL3
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2019-J87 -- 2019 JP3
I52Steward 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
K41Vegaquattro Obs. in Italy, 1 in MPEC 2019-J79 -- 2019 JG3
L01Visnjan Obs., 5 in MPECs 2019-J79, 2019-J84, 2019-J85, 2019-J86 & 2019-J87 -- 2019 JP3, 2019 JO3, 2019 JN3, 2019 JM3, 2019 JG3
C51WISE in Earth polar orbit, 2 in MPEC 2019-J88 -- 88263, 163000
I41Zwicky 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

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL and NEODyS listings is 100 years, and both post impact solutions beyond that for some special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2019 JJ3NEODyS16302043-205433.83e-08-8.40-8.510NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2019-05-08.221 to 2019-05-09.292."

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.

Chronology  on 10 May '19

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

2133Grabbed MPEC 2019-J89 - 2015 TL145 - see above
1850Generated Traffic Report
1630Noted that NEODyS has posted 2019 JJ3 as an impact risk - see above
Grabbed MPEC 2019-J88 - Daily Orbit Update - see above
0444Grabbed 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