Contents  on 12 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 12 May '19

Fourteen objects reported inside ten LD

Fourteen minor planets are reported inside ten lunar distances (LD) of Earth today. Closest is risk-listed 2019 JJ3, which heads away from 3.38 to 5.31 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
1.25 LD May 8 2019 JV5 9 m  8.71 to 11.23 LD May 4 - 12 NEW, exits ten LD - MPEC
2.0   LD May 10* 2019 JJ3 11 m  3.4 to 5.3 LD May 6 - 15 EPU +/- 8 mins.*, risk
2.34 LD tomorrow 2019 JW5 12 m  3.41 from 5.57 LD May 10 - 17 NEW - MPEC
3.1   LD tomorrow* 2019 JK3 16 m  3.8 from 5.6 LD May 9 - 17 EPU +/- 9 mins.*
3.64 LD today 2019 JO2 25 m  3.64 LD May 8 - 16 Earth closest at 0952 UTC - DOU
3.92 LD May 9 2019 JM 14 m  5.73 to 7.06 LD May 4 - 14 NHATS target
4.14 LD May 17 2012 KT12 19 m  5.85 from 6.52 LD May 7 - 27 NHATS target
4.42 LD May 16 2019 JN5 26 m  9.85 from 12.54 LD today - May 19 NEW, enters ten LD - MPEC
4.69 LD April 27 2019 GF1 10 m  7.49 to 7.80 LD April 7 - May 19 NHATS target
5.56 LD May 17 2019 JG1 15 m  9.26 from 10.78 LD today - May 21 NHATS target, enters ten LD - DOU
6.09 LD May 17 2019 GT1 34 m  7.51 from 8.05 LD May 8 - 26 NHATS target
6.16 LD today 2018 VX8 112 m  6.16 LD May 10 - 14 Earth closest at 0854 UTC
6.43 LD May 10 2019 JN3 13 m  7.10 to 7.85 LD May 4 - 15 NHATS target
7.04 LD May 15 2019 JN2 25 m  7.72 from 8.46 LD May 10 - 19 NHATS target - DOU
* EPU = Earth passage uncertainty

This report was generated at 2303 UTC with six discoveries. See the above active traffic table for details on three of these, while the other three have already departed. 2019 JX5 (MPEC) went by at roughly 4.3 LD* on May 6th. 2019 JU5 (MPEC) came to 9.40 LD on May 2nd. And 2019 JH5 (MPEC) passed us at about 4.9 LD* on May 3rd. Today's DOU MPEC has follow-up for four objects active in the traffic tables here and for seven departed objects: 2019 HP and six that are risk-listed -- 2019 JZ2, 2019 JR2, 2019 GK21, 2019 GS19, and including intruders 2019 JY2 and 2019 JK. The DOU also posts the recovery of distant 2017 DC36 and observations of distant objects 2012 QG42, 357439 2004 BL86, and 68216 2001 CV26.

Approaching
2.5   LD May 20* 2019 JL3 35 m  14.6 from 16.5 LD May 15 - 25 EPU +/- 2.07 hours* - DOU



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 objects that have approached Earth within ten LD since A/CC began these traffic reports twelve years ago but are not presently coming so close. Object temporal distances are derived by A/CC from JPL Horizons data. "LD*" indicates some uncertainty in an object's Earth passage time and distance. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 12 May '19

The MPC's NEO Confirmation Page has 87 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 87 objects listed. Of these, 37 were "one nighters." So far The Tracking News has counted a total of 150 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 12 May '19

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 30 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2019-J122 - "23:11 UT" - Comet C/2019 J1 (Lemmon)


MPEC 2019-J121 - "19:05 UT" - 2017 WJ30


MPEC 2019-J120 - "19:00 UT" - 2019 JX5


MPEC 2019-J119 - "18:55 UT" - 2019 JW5


MPEC 2019-J118 - "18:50 UT" - 2019 JV5


MPEC 2019-J117 - "18:45 UT" - 2019 JU5


MPEC 2019-J116 - "18:40 UT" - 2019 JT5


MPEC 2019-J115 - "18:35 UT" - 2019 JS5


MPEC 2019-J114 - "18:30 UT" - 2019 JR5


MPEC 2019-J113 - "18:25 UT" - 2019 JQ5


MPEC 2019-J112 - "18:20 UT" - 2019 JP5


MPEC 2019-J111 - "18:15 UT" - 2019 JO5


MPEC 2019-J110 - "18:10 UT" - 2019 JN5


MPEC 2019-J109 - "18:05 UT" - 2019 JM5


MPEC 2019-J108 - "18:00 UT" - 2019 JL5


MPEC 2019-J107 - "17:55 UT" - 2019 JK5


MPEC 2019-J106 - "17:50 UT" - 2019 JJ5


MPEC 2019-J105 - "17:45 UT" - 2019 JH5


MPEC 2019-J104 - "17:40 UT" - 2019 JG5


MPEC 2019-J103 - "17:35 UT" - 2019 JF5


MPEC 2019-J102 - "17:31 UT" - 2019 JE5


MPEC 2019-J101 - "17:26 UT" - 2019 JD5


MPEC 2019-J100 - "17:21 UT" - 2019 JC5


MPEC 2019-J99 - "17:16 UT" - 2019 JB5


MPEC 2019-J98 - "17:11 UT" - 2019 JA5


MPEC 2019-J97 - "17:07 UT" - 2019 JZ4


MPEC 2019-J96 - "17:02 UT" - 2019 JY4


MPEC 2019-J95 - "16:57 UT" - 2019 JX4


MPEC 2019-J94 - "16:46 UT" - 2012 JR4


<< DOU on 12 May '19 >>  MPEC 2019-J93 - "12:05 UT" - Daily Orbit Update

Observers  on 12 May '19

A total of 56 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 13 in MPECs 2019-J93, 2019-J104, 2019-J105, 2019-J106, 2019-J108, 2019-J109, 2019-J112 & 2019-J116 -- 2019 JT5, 2019 JP5, 2019 JM5, 2019 JL5, 2019 JJ5, 2019 JH5, 2019 JG5, 2019 HO2, 2019 GT3, 2015 TT351, 2014 DJ112, 523600, 144861
T05ATLAS Haleakala in Hawaii, 34 in MPECs 2019-J93 & 2019-J117 -- 2019 JU5, 2015 JD1, 2012 QG42, 2002 RT112, 96631, 90367, 85236, 52381, 495615, 453778, 376775, 297300, 21088, 185716, 163696, 163051, 162181, 144898, 141593, 141525, 140928, 138095, 12538, 112221, 6178, 5332, 5189, 4581, 3199, 3103, 1943, 1685, 1620, 1036
T08ATLAS Mauna Loa in Hawaii, 44 in MPEC 2019-J93 -- 2019 HC, 2015 JD1, 2014 LJ21, 2012 QG42, 2008 WX32, 2002 JW15, 90367, 88263, 86039, 85774, 85236, 522684, 495615, 453778, 396593, 381906, 355256, 35107, 326777, 297300, 244670, 242450, 21088, 18736, 185716, 168378, 163696, 162181, 153814, 144898, 143947, 141593, 137170, 112221, 6178, 5693, 5587, 5332, 3199, 3122, 3103, 1980, 1866, 1036
I47Auger Obs. in Argentina, 1 in MPEC 2019-J122 -- C/2019 J1
069Baldone Obs. in Latvia, 2 in MPEC 2019-J93 -- 2014 LJ21, 6178
C77Bernezzo Obs. in Italy, 1 in MPEC 2019-J117 -- 2019 JU5
U63Burnt Tree Hill Obs., 1 in MPEC 2019-J117 -- 2019 JU5
X74Campo dos Amarais Obs., 3 in MPECs 2019-J93 & 2019-J122 -- C/2019 J1, 250697, 4953
703Catalina Sky Survey (CSS) in Arizona, 44 in MPECs 2019-J93, 2019-J114 & 2019-J121 -- 2019 JR5, 2019 JB1, 2019 HC, 2019 GD3, 2019 CH, 2017 WJ30, 2016 RR33, 2015 JD1, 2014 QX266, 2011 HP, 2009 DL1, 2002 JW15, 2002 GA, 96631, 90367, 89958, 85774, 68216, 522684, 458198, 396593, 381906, 376775, 355256, 326777, 26166, 257838, 257744, 18736, 163696, 163051, 163000, 162181, 153814, 144898, 141593, 5879, 5693, 3103, 3102, 1943, 1620, 1036, 433
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 4 in MPECs 2019-J98, 2019-J99, 2019-J103 & 2019-J115 -- 2019 JS5, 2019 JF5, 2019 JB5, 2019 JA5
309&Marco Micheli via Cerro Paranal in Chile, 1 in MPEC 2019-J93 -- 2018 XB4
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 33 in MPECs 2019-J93, 2019-J94, 2019-J95, 2019-J96, 2019-J97, 2019-J99, 2019-J100, 2019-J101, 2019-J103, 2019-J104, 2019-J105, 2019-J106, 2019-J107, 2019-J112, 2019-J114, 2019-J115, 2019-J116 & 2019-J119 -- 2019 JZ4, 2019 JY4, 2019 JX4, 2019 JW5, 2019 JT5, 2019 JS5, 2019 JR5, 2019 JR2, 2019 JP5, 2019 JK5, 2019 JJ5, 2019 JH5, 2019 JG5, 2019 JF5, 2019 JD5, 2019 JC5, 2019 JB5, 2019 HF3, 2019 GY3, 2019 GS20, 2019 GS19, 2019 GO3, 2019 GN3, 2019 GM, 2019 GL5, 2019 GG5, 2019 EQ, 2019 CW2, 2019 CS, 2019 AV2, 2018 YJ, 2018 TV2, 2012 JR4
N55Corona Borealis Obs. in Tibet, 1 in MPEC 2019-J122 -- C/2019 J1
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2019-J117 -- 2019 JU5
L05Dridri Obs. in Italy, 1 in MPEC 2019-J93 -- 2018 XG5
I19El Gato Gris Obs. in Argentina, 2 in MPECs 2019-J114 & 2019-J119 -- 2019 JW5, 2019 JR5
006Fabra Obs. in Spain, 1 in MPEC 2019-J93 -- 137170
734Farpoint Obs. in Kansas, 1 in MPEC 2019-J104 -- 2019 JG5
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2019-J114 & 2019-J117 -- 2019 JU5, 2019 JR5
X31Galilei Obs., 2 in MPECs 2019-J114 & 2019-J119 -- 2019 JW5, 2019 JR5
E89Geyserland Obs. in New Zealand, 3 in MPEC 2019-J93 -- 162181, 142040, 141593
203GiaGa Obs. in Italy, 1 in MPEC 2019-J117 -- 2019 JU5
K88GINOP-KHK in Hungary, 5 in MPECs 2019-J102, 2019-J114, 2019-J117, 2019-J118 & 2019-J119 -- 2019 JW5, 2019 JV5, 2019 JU5, 2019 JR5, 2019 JE5
J95Great Shefford Obs. in England, 2 in MPECs 2019-J117 & 2019-J118 -- 2019 JV5, 2019 JU5
H06%Ernesto Guido in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2019-J122 -- C/2019 J1
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2019-J122 -- C/2019 J1
Q622Marian Urbanik in Slovakia via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2019-J122 -- C/2019 J1
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 2 in MPECs 2019-J110 & 2019-J117 -- 2019 JU5, 2019 JN5
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2019-J93 -- 2019 GJ
K38M57 Obs. in Italy, 1 in MPEC 2019-J117 -- 2019 JU5
Z22MASTER IAC Obs. in the Canary Islands, 3 in MPEC 2019-J93 -- 376775, 326777, 153814
118Modra Obs. in Slovakia, 1 in MPEC 2019-J117 -- 2019 JU5
474Mt. John Obs. in New Zealand, 12 in MPECs 2019-J93, 2019-J112 & 2019-J114 -- 2019 JR5, 2019 JQ2, 2019 JP5, 2019 HW3, 2019 HP, 2019 HO, 2019 GU2, 2019 GR2, 2019 FV2, 2017 QP17, 2017 FE128, 2017 DC36
G96Mt. Lemmon Survey (MLS) in Arizona, 33 in MPECs 2019-J93, 2019-J98, 2019-J110, 2019-J111, 2019-J112, 2019-J113, 2019-J115, 2019-J121 & 2019-J122 -- 2019 JS5, 2019 JQ5, 2019 JP5, 2019 JO5, 2019 JN5, 2019 JA5, C/2019 J1, 2019 GN21, 2019 GF20, 2018 YA3, 2018 VM3, 2017 WJ30, 2016 JE, 2015 KN120, 2015 KJ122, 485882, 483563, 424532, 410778, 387733, 385580, 366733, 366470, 31210, 310737, 163696, 154035, 139289, 138325, 10302, 7480, 6178, 5189
J69North Obs. in England, 1 in MPEC 2019-J93 -- 2018 XG5
Z80Northolt Branch Obs. in England, 1 in MPEC 2019-J117 -- 2019 JU5
F51Pan-STARRS 1 (PS1) in Hawaii, 80 in MPECs 2019-J93, 2019-J94, 2019-J95, 2019-J96, 2019-J97, 2019-J98, 2019-J99, 2019-J100, 2019-J101, 2019-J102, 2019-J103, 2019-J104, 2019-J105, 2019-J106, 2019-J107, 2019-J108, 2019-J109, 2019-J112, 2019-J113, 2019-J114, 2019-J116, 2019-J117, 2019-J119, 2019-J120 & 2019-J121 -- 2019 JZ4, 2019 JY4, 2019 JX5, 2019 JX4, 2019 JW5, 2019 JU5, 2019 JT5, 2019 JR5, 2019 JQ5, 2019 JP5, 2019 JM5, 2019 JL5, 2019 JK5, 2019 JJ5, 2019 JH5, 2019 JH1, 2019 JG5, 2019 JF5, 2019 JE5, 2019 JD5, 2019 JC5, 2019 JB5, 2019 JA5, 2019 GZ6, 2019 GZ19, 2019 GX19, 2019 GJ20, 2018 YB1, 2018 XQ4, 2018 TD4, 2017 WJ30, 2017 QQ32, 2017 GB8, 2016 RR33, 2016 PN8, 2016 NV, 2016 LU10, 2016 FF15, 2015 RQ150, 2012 SB22, 2012 JR4, 2011 PP16, 2006 FE, 2002 UN, 96631, 85236, 68348, 523656, 496861, 486739, 450203, 435138, 410195, 409934, 401925, 376775, 365246, 357439, 275975, 267729, 257838, 230549, 226219, 209924, 189008, 185716, 164201, 163014, 162687, 159923, 159504, 159467, 141765, 100926, 9162, 8567, 5693, 5332, 4179, 3551
K63Pascoli Obs. in Italy, 2 in MPECs 2019-J114 & 2019-J117 -- 2019 JU5, 2019 JR5
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2019-J107 -- 2019 JK5
D29Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2019-J93 -- 138095, 3103
104San Marcello Pistoiese Obs. in Italy, 5 in MPECs 2019-J102, 2019-J114, 2019-J117, 2019-J118 & 2019-J120 -- 2019 JX5, 2019 JV5, 2019 JU5, 2019 JR5, 2019 JE5
H36Sandlot Obs. in Kansas, 4 in MPECs 2019-J93, 2019-J94, 2019-J110 & 2019-J113 -- 2019 JQ5, 2019 JN5, 2019 JL3, 2012 JR4
C95SATINO-1 in France, 5 in MPECs 2019-J93, 2019-J117 & 2019-J122 -- 2019 JU5, C/2019 J1, 2012 CP2, 2011 UA131, 2008 HS3
204Schiaparelli Obs. in Italy, 1 in MPEC 2019-J117 -- 2019 JU5
Q11Shinshiro Obs., 1 in MPEC 2019-J122 -- C/2019 J1
645Sloan Digital Sky Survey in New Mexico, 1 in MPEC 2019-J121 -- 2017 WJ30
G40'W.F. Cashwell in Nevada via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-J117 -- 2019 JU5
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-J122 -- C/2019 J1
W881Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2019-J122 -- C/2019 J1
691Spacewatch 0.9m telescope in Arizona, 14 in MPECs 2019-J93 & 2019-J103 -- 2019 JX2, 2019 JR1, 2019 JQ2, 2019 JP3, 2019 JP2, 2019 JK1, 2019 JH3, 2019 JG3, 2019 JG1, 2019 JF5, 2019 JF1, 2019 JB1, 2019 HR, 3551
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2019-J93, 2019-J108 & 2019-J109 -- 2019 JM5, 2019 JL5, 2019 GD1
I93St. Pardon de Conques Obs. in France, 4 in MPECs 2019-J110, 2019-J114, 2019-J117 & 2019-J119 -- 2019 JW5, 2019 JU5, 2019 JR5, 2019 JN5
I52Steward Obs. Mt. Lemmon Station in Arizona, 17 in MPECs 2019-J93, 2019-J96, 2019-J98, 2019-J105, 2019-J107, 2019-J110, 2019-J111, 2019-J112, 2019-J113, 2019-J114, 2019-J115 & 2019-J122 -- 2019 JY4, 2019 JS5, 2019 JR5, 2019 JR1, 2019 JQ5, 2019 JP5, 2019 JO5, 2019 JO2, 2019 JN5, 2019 JN2, 2019 JM3, 2019 JK5, 2019 JH5, 2019 JA5, C/2019 J1, 2012 QG42, 3551
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 7 in MPEC 2019-J93 -- 2019 JZ2, 2019 JY2, 2019 JM1, 2019 JK, 2019 JG, 2019 GK21, 2019 GD1
L01Visnjan Obs., 9 in MPECs 2019-J94, 2019-J102, 2019-J107, 2019-J109, 2019-J113, 2019-J114, 2019-J117, 2019-J118 & 2019-J122 -- 2019 JV5, 2019 JU5, 2019 JR5, 2019 JQ5, 2019 JM5, 2019 JK5, 2019 JE5, C/2019 J1, 2012 JR4
718Wiggins Obs. in Utah, 1 in MPEC 2019-J93 -- 2018 XG5
C42Xingming Obs. in China, 1 in MPEC 2019-J122 -- C/2019 J1
I41Zwicky Transient Facility in southern California, 1 in MPEC 2019-J118 -- 2019 JV5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 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 JO5JPL Sentry20002021-2075738.04203e-08-5.19-5.660JPL: Computed at 12:38 today Pacific time based on 11 observations spanning 2.0342 days (2019-May-09.2901 to 2019-May-11.32429). Diameter approximately 0.060 km. from weighted mean H=23.74.
2019 JZ2JPL Sentry17302041-204111.116e-05-5.17-5.170JPL: Computed at 09:47 today Pacific time based on 23 observations spanning 3.1439 days (2019-May-06.40102 to 2019-May-09.54488). Diameter approximately 0.015 km. from weighted mean H=26.70.
NEODyS1730204139.09e-06-5.27-5.270NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2019-05-06.402 to 2019-05-09.546."
2019 JY2JPL Sentry17302059-2119268.136166e-06-7.60-8.340JPL: Computed at 09:54 today Pacific time based on 44 observations spanning 3.1446 days (2019-May-06.394814 to 2019-May-09.539397). Diameter approximately 0.004 km. from weighted mean H=29.60.
NEODyS17302053-2118871.67e-05-7.28-8.020NEODyS: "Based on 44 optical observations (of which 0 are rejected as outliers) from 2019-05-06.396 to 2019-05-09.540."
2019 JR2JPL Sentry17302079-2118131.6151649e-05-5.98-6.120JPL: Computed at 09:50 today Pacific time based on 27 observations spanning 5.8123 days (2019-May-04.31798 to 2019-May-10.13025). Diameter approximately 0.013 km. from weighted mean H=27.02.
NEODyS17302079-2118302.44e-05-5.79-6.050NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2019-05-04.319 to 2019-05-10.131."
2019 JM1JPL Sentry17302078-207816.633e-06-4.40-4.400JPL: Computed at 09:40 today Pacific time based on 46 observations spanning 7.2240 days (2019-May-02.25501 to 2019-May-09.478967). Diameter approximately 0.056 km. from weighted mean H=23.93.
NEODyS17302078-209836.56e-06-4.43-4.430NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2019-05-02.256 to 2019-05-09.480."
2019 JKJPL Sentry17302053-205311.914e-07-7.78-7.780JPL: Computed at 09:44 today Pacific time based on 43 observations spanning 6.1087 days (2019-May-01.39563 to 2019-May-07.504337). Diameter approximately 0.009 km. from weighted mean H=27.95.
NEODyS1730205322.81e-07-7.64-7.770NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2019-05-01.396 to 2019-05-07.505."
2019 GK21JPL Sentry17302099-210321.1899e-06-6.52-6.600JPL: Computed at 09:19 today Pacific time based on 71 observations spanning 23.111 days (2019-Apr-14.15324 to 2019-May-07.264472). Diameter approximately 0.025 km. from weighted mean H=25.64.
NEODyS17302099-210741.89e-06-6.34-6.510NEODyS: "Based on 72 optical observations (of which 1 are rejected as outliers) from 2019-04-14.154 to 2019-05-07.265."
2019 GS19JPL Sentry17302102-210211.701e-07-7.24-7.240JPL: Computed at 09:04 today Pacific time based on 61 observations spanning 19.910 days (2019-Apr-11.38728 to 2019-May-01.29753). Diameter approximately 0.025 km. from weighted mean H=25.65.
NEODyS17302089-210233.11e-07-6.96-6.960NEODyS: "Based on 63 optical observations (of which 5 are rejected as outliers) from 2019-04-11.388 to 2019-05-01.298."
2019 GD1JPL Sentry1730R E M O V E DJPL: Risk listing removed at 1611 UTC today
NEODyS1730R E M O V E D-
2018 XB4JPL Sentry17302092-210922.44669e-06-5.44-5.440JPL: Computed at 08:24 today Pacific time based on 70 observations spanning 148.05 days (2018-Dec-13.34358 to 2019-May-10.398286). Diameter approximately 0.054 km. from weighted mean H=24.00.
NEODyS17302092-211562.05e-05-4.53-4.530NEODyS: "Based on 70 optical observations (of which 1 are rejected as outliers) from 2018-12-13.344 to 2019-05-10.399."

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 12 May '19

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

2358Grabbed MPEC 2019-J122 - Comet C/2019 J1 (Lemmon) - see above
2303Generated Traffic Report
2000Noted that JPL Sentry has posted 2019 JO5 as an impact risk - see above
1930Grabbed MPEC 2019-J121 - 2017 WJ30 - see above
1902Grabbed MPEC 2019-J114 - 2019 JR5 - see above
Grabbed MPEC 2019-J115 - 2019 JS5 - see above
Grabbed MPEC 2019-J116 - 2019 JT5 - see above
Grabbed MPEC 2019-J117 - 2019 JU5 - see above
Grabbed MPEC 2019-J118 - 2019 JV5 - see above
Grabbed MPEC 2019-J119 - 2019 JW5 - see above
Grabbed MPEC 2019-J120 - 2019 JX5 - see above
1830Grabbed MPEC 2019-J102 - 2019 JE5 - see above
Grabbed MPEC 2019-J103 - 2019 JF5 - see above
Grabbed MPEC 2019-J104 - 2019 JG5 - see above
Grabbed MPEC 2019-J105 - 2019 JH5 - see above
Grabbed MPEC 2019-J106 - 2019 JJ5 - see above
Grabbed MPEC 2019-J107 - 2019 JK5 - see above
Grabbed MPEC 2019-J108 - 2019 JL5 - see above
Grabbed MPEC 2019-J109 - 2019 JM5 - see above
Grabbed MPEC 2019-J110 - 2019 JN5 - see above
Grabbed MPEC 2019-J111 - 2019 JO5 - see above
Grabbed MPEC 2019-J112 - 2019 JP5 - see above
Grabbed MPEC 2019-J113 - 2019 JQ5 - see above
1730Noted that JPL Sentry has updated its 2018 XB4 risk assessment - see above
Noted that NEODyS has updated its 2018 XB4 risk assessment - see above
Noted that JPL Sentry has removed 2019 GD1 as an impact risk - see above
Noted that NEODyS has removed 2019 GD1 as an impact risk - see above
Noted that JPL Sentry has updated its 2019 GK21 risk assessment - see above
Noted that NEODyS has updated its 2019 GK21 risk assessment - see above
Noted that JPL Sentry has updated its 2019 GS19 risk assessment - see above
Noted that NEODyS has updated its 2019 GS19 risk assessment - see above
Noted that JPL Sentry has updated its 2019 JK risk assessment - see above
Noted that NEODyS has updated its 2019 JK risk assessment - see above
Noted that JPL Sentry has updated its 2019 JM1 risk assessment - see above
Noted that NEODyS has updated its 2019 JM1 risk assessment - see above
Noted that JPL Sentry has updated its 2019 JR2 risk assessment - see above
Noted that NEODyS has updated its 2019 JR2 risk assessment - see above
Noted that JPL Sentry has updated its 2019 JY2 risk assessment - see above
Noted that NEODyS has updated its 2019 JY2 risk assessment - see above
Noted that JPL Sentry has updated its 2019 JZ2 risk assessment - see above
Noted that NEODyS has updated its 2019 JZ2 risk assessment - see above
Grabbed MPEC 2019-J93 - Daily Orbit Update - see above
Grabbed MPEC 2019-J94 - 2012 JR4 - see above
Grabbed MPEC 2019-J95 - 2019 JX4 - see above
Grabbed MPEC 2019-J96 - 2019 JY4 - see above
Grabbed MPEC 2019-J97 - 2019 JZ4 - see above
Grabbed MPEC 2019-J98 - 2019 JA5 - see above
Grabbed MPEC 2019-J99 - 2019 JB5 - see above
Grabbed MPEC 2019-J100 - 2019 JC5 - see above
Grabbed MPEC 2019-J101 - 2019 JD5 - see above