Contents  on 10 May '18

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 '18

Nine objects reported inside ten LD

Nine Solar-System small bodies are reported inside ten lunar distances (LD) of our planet today. Nearest is 2018 JP, which exits Earth's sphere of gravitational influence as it moves away from 2.21 to 3.18 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
2.08 LD yesterday 2018 JP 11 m  2.21 to 3.18 LD May 3 - 15 NHATS target, exits Earth SOI - DOU
2.16 LD May 13 2016 HP6 27 m  3.35 from 4.39 LD May 5 - 20 NHATS target - DOU
3.49 LD May 6 2018 JD 16 m  7.29 to 8.92 LD May 1 - 11 risk - DOU
4.33 LD tomorrow 2018 JZ 13 m  4.47 from 5.96 LD May 8 - 14
4.43 LD May 13 2018 JA1 27 m  5.64 from 6.53 LD May 6 - 20 DOU
5.20 LD May 6 2018 JB 22 m  7.68 to 9.14 LD May 2 - 11
6.2   LD May 8* 2016 JQ5 8 m  7.6 to 9.1 LD May 4 - 11 EPU +/- 14.00 hours*
6.48 LD yesterday 388945 2008 TZ3 282 m  6.58 to 7.22 LD May 5 - 13
7.44 LD May 14 2018 JL1 15 m  8.48 from 9.16 LD May 8 - 19 NEW, risk - MPEC

This report was generated at 2314 UTC with the unexpected recovery of approaching risk-listed intruder 2010 WC9 (MPEC, DOU), and with the discoveries of two risk-listed objects -- approaching 2018 JG1 (MPEC) and inbound 2018 JL1 (MPEC), and of two other objects that have already departed. 2018 JR1 (MPEC) passed us at 6.76 LD on May 3rd and 2018 JH1 (MPEC) went by at 7.90 LD on May 1st. Today's DOU MPEC has first follow-up for approaching 2018 JX and outbound 2018 JP, and additional observation of approaching 2018 JY and inbound 2018 JA1, along with continuing follow-up for approaching objects 2018 EJ4 and 2015 DP155, inbound 2016 HP6, outbound risk-listed 2018 JD, departed objects 2018 JM, 2018 HL1, 1999 FN19, and risk-listed 2018 JN, and distant 2002 JR100, plus astrometry from March for 2018 FP5.
        Today's DOU also reports astrometry for 27 objects, most of them risk listed, that were close passers in the years 2015 to 2017. The data is from those years and is nearly all from Pan-STARRS 1. A few of these were intruders, including 2016 EF195, which had its observing arc expanded from 1.88 to 16.99 days. It whizzed by Earth at 0.082 LD on 11 March 2016.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
0.53 LD May 15 2010 WC9 68 m  14.04 from 16.89 LD May 12 - 19 NEW, intruder, risk - MPEC, DOU
8.78 LD May 14 2018 JY 50 m  12.41 from 14.21 LD May 12 - 16 DOU
3.88 LD May 16 2018 JX 73 m  15.97 from 18.83 LD May 13 - 19 DOU
5.3   LD May 20* 2018 JG1 42 m  17.5 from 19.2 LD May 15 - 24 NEW, EPU +/- 6 mins.*, risk - MPEC
9.50 LD May 29 68347 2001 KB67 371 m  56.23 from 59.38 LD May 28 - 30 radar target
5.56 LD June 10 2018 EJ4 186 m  42.15 from 43.43 LD June 4 - 16 radar/NHATS target - DOU
8.96 LD June 11 2015 DP155 162 m  30.47 from 31.27 LD June 6 - 15 NHATS target - DOU
* EPU = Earth passage uncertainty



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

NEOCP Activity  on 10 May '18

The MPC's NEO Confirmation Page has 26 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 26 objects listed. Of these, eight were "one nighters." The Tracking News counted a total of 51 listings on the NEOCP on this day.

New MPECs  on 10 May '18

Minor Planet Electronic Circulars

There were seventeen MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-J51 - "20:09 UT" - 2018 JM1


MPEC 2018-J50 - "20:06 UT" - 2018 JR1


MPEC 2018-J49 - "20:03 UT" - 2018 JQ1


MPEC 2018-J48 - "20:00 UT" - 2018 JP1


MPEC 2018-J47 - "19:56 UT" - 2018 JO1


MPEC 2018-J46 - "19:53 UT" - 2018 JN1


MPEC 2018-J45 - "19:50 UT" - 2018 JL1


MPEC 2018-J44 - "19:47 UT" - 2018 JK1


MPEC 2018-J43 - "19:43 UT" - 2018 JJ1


MPEC 2018-J42 - "19:40 UT" - 2018 JH1


MPEC 2018-J41 - "19:37 UT" - 2018 JG1


MPEC 2018-J40 - "19:33 UT" - 2018 JF1


MPEC 2018-J39 - "19:29 UT" - 2018 JE1


<< DOU on 10 May '18 >>  MPEC 2018-J38 - "12:05 UT" - Daily Orbit Update


MPEC 2018-J37 - "10:28 UT" - 2015 MB54


MPEC 2018-J36 - "01:29 UT" - 2015 BP519


MPEC 2018-J35 - "01:25 UT" - 2010 WC9

Observers  on 10 May '18

A total of 40 observers appeared in this day's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 3 in MPECs 2018-J47, 2018-J49 & 2018-J51 -- 2018 JQ1, 2018 JO1, 2018 JM1
H21Astronomical Research Obs. Westfield in Illinois, 14 in MPECs 2018-J38 & 2018-J50 -- 2018 JR1, 2018 HO1, 2018 GT3, 2018 FP5, 2018 FO5, 2018 FF1, 2018 FC1, 2018 EA4, 2015 GZ45, 2009 RM, 2009 BM2, 2006 EE1, 2000 YG29, 363298
T05ATLAS Haleakala in Hawaii, 9 in MPECs 2018-J35 & 2018-J38 -- 2018 HV2, 2010 WC9, 2002 JR100, 450648, 37655, 24761, 15745, 154268, 1627
T08ATLAS Mauna Loa in Hawaii, 5 in MPEC 2018-J38 -- 2018 JY, 2018 FQ5, 242643, 5604, 1685
R58Beverly-Begg Obs., 1 in MPEC 2018-J38 -- 2018 JA1
703Catalina Sky Survey (CSS) in Arizona, 23 in MPECs 2018-J37, 2018-J38, 2018-J39, 2018-J47, 2018-J49 & 2018-J51 -- 2018 JX, 2018 JQ1, 2018 JO1, 2018 JM1, 2018 JK, 2018 JE1, 2018 JA, 2018 GT1, 2018 GL1, 2017 WH14, 2015 MB54, 2015 DP155, 2010 WC9, 53110, 513182, 474574, 337228, 220839, 174050, 164201, 152931, 6455, 1866
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 10 in MPECs 2018-J39, 2018-J42, 2018-J43, 2018-J44, 2018-J45, 2018-J46, 2018-J47, 2018-J49, 2018-J50 & 2018-J51 -- 2018 JR1, 2018 JQ1, 2018 JO1, 2018 JN1, 2018 JM1, 2018 JL1, 2018 JK1, 2018 JJ1, 2018 JH1, 2018 JE1
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2018-J35 & 2018-J39 -- 2018 JE1, 2010 WC9
W847David Gerdes in Michigan via DECam in Chile, 1 in MPEC 2018-J36 -- 2015 BP519
K87Dettelbach Vineyard Obs. in Germany, 3 in MPECs 2018-J35, 2018-J38 & 2018-J39 -- 2018 JE1, 2018 JE, 2010 WC9
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 7 in MPECs 2018-J35, 2018-J38, 2018-J40, 2018-J41 & 2018-J45 -- 2018 JN, 2018 JL1, 2018 JG1, 2018 JF1, 2018 JA1, 2018 HJ2, 2010 WC9
006Fabra Obs. in Spain, 1 in MPEC 2018-J38 -- 138847
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2018-J35, 2018-J47 & 2018-J49 -- 2018 JQ1, 2018 JO1, 2010 WC9
K88GINOP-KHK in Hungary, 5 in MPECs 2018-J35, 2018-J38, 2018-J47, 2018-J49 & 2018-J51 -- 2018 JQ1, 2018 JO1, 2018 JM1, 2010 WC9, 2005 JD46
J95Great Shefford Obs. in England, 9 in MPECs 2018-J35, 2018-J39, 2018-J40, 2018-J41, 2018-J45, 2018-J46, 2018-J47, 2018-J50 & 2018-J51 -- 2018 JR1, 2018 JO1, 2018 JN1, 2018 JM1, 2018 JL1, 2018 JG1, 2018 JF1, 2018 JE1, 2010 WC9
G48Harlingten Research Obs. in New Mexico, 1 in MPEC 2018-J49 -- 2018 JQ1
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-J38 -- 2010 WC9
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 2 in MPECs 2018-J49 & 2018-J51 -- 2018 JQ1, 2018 JM1
Z43Landehen Obs., 2 in MPEC 2018-J38 -- 2018 BY2, 138847
H01Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2018-J38, 2018-J40, 2018-J41, 2018-J43, 2018-J44, 2018-J48 & 2018-J50 -- 2018 JR1, 2018 JP1, 2018 JN, 2018 JK1, 2018 JJ1, 2018 JG1, 2018 JF1, 2018 HJ2
932McCarthy Obs. in Connecticut, 2 in MPECs 2018-J47 & 2018-J51 -- 2018 JO1, 2018 JM1
711McDonald Obs. in Texas, 14 in MPECs 2018-J35, 2018-J38, 2018-J39, 2018-J40, 2018-J41, 2018-J44, 2018-J46, 2018-J47, 2018-J48, 2018-J49, 2018-J50 & 2018-J51 -- 2018 JR1, 2018 JQ1, 2018 JP1, 2018 JO1, 2018 JN1, 2018 JM1, 2018 JK1, 2018 JK, 2018 JG1, 2018 JF1, 2018 JE1, 2018 GW4, 2018 GM4, 2010 WC9
474Mt. John Obs. in New Zealand, 9 in MPECs 2018-J38, 2018-J47, 2018-J49 & 2018-J51 -- 2018 JQ1, 2018 JP, 2018 JO1, 2018 JM1, 2018 HQ, 2018 HL1, 2018 GO2, 2018 GJ4, 2018 DX3
G96Mt. Lemmon Survey (MLS) in Arizona, 27 in MPECs 2018-J35, 2018-J38, 2018-J39, 2018-J40, 2018-J41, 2018-J42, 2018-J43, 2018-J44, 2018-J45, 2018-J46, 2018-J48 & 2018-J50 -- 2018 JR1, 2018 JP1, 2018 JN1, 2018 JL1, 2018 JK1, 2018 JJ1, 2018 JH1, 2018 JG1, 2018 JF1, 2018 JE1, 2018 JE, 2018 DB2, 2016 HP6, 2010 WC9, 2008 JP14, 2002 JR100, 2001 SC170, 516457, 505667, 411201, 38091, 36284, 337084, 162011, 8567, 8566, 8037
Z80Northolt Branch Obs. in England, 2 in MPECs 2018-J35 & 2018-J38 -- 2010 WC9, 1627
F51Pan-STARRS 1 (PS1) in Hawaii, 28 in MPEC 2018-J38 -- 2017 TU1, 2017 TA6, 2017 RP16, 2017 BG92, 2017 BE30, 2016 WG, 2016 UQ36, 2016 TC57, 2016 JA, 2016 HF3, 2016 FE15, 2016 FA14, 2016 EV84, 2016 EF195, 2016 DK2, 2016 DK1, 2016 CK137, 2015 XO129, 2015 UR67, 2015 TL21, 2015 PL57, 2015 HE183, 2015 GB1, 2015 EG, 2015 DD54, 2015 BY3, 2015 BW516, 2014 YN
D29Purple Mtn. Obs. Xuyi Station in China, 12 in MPECs 2018-J38 & 2018-J49 -- 2018 JQ1, 2016 CX264, 85490, 516976, 497117, 36183, 242643, 162635, 152770, 139359, 100004, 5626
K61Rokycany Obs. in the Czech Republic, 2 in MPECs 2018-J38 & 2018-J39 -- 2018 JE1, 2018 JA
033Schwarzschild Obs. in Germany, 13 in MPECs 2018-J37, 2018-J39, 2018-J40, 2018-J41, 2018-J42, 2018-J43, 2018-J44, 2018-J45, 2018-J46, 2018-J47, 2018-J48, 2018-J49 & 2018-J50 -- 2018 JR1, 2018 JQ1, 2018 JP1, 2018 JO1, 2018 JN1, 2018 JL1, 2018 JK1, 2018 JJ1, 2018 JH1, 2018 JG1, 2018 JF1, 2018 JE1, 2015 MB54
G40!M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-J38 -- 1999 FN19
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPECs 2018-J38 & 2018-J49 -- 2018 JQ1, 2010 WC9
Y00SONEAR in Brazil, 2 in MPEC 2018-J38 -- 444193, 1916
691Spacewatch 0.9m telescope in Arizona, 8 in MPEC 2018-J38 -- 2018 GZ3, 2018 CZ13, 2016 CX264, 2015 SF20, 2015 FP118, 2008 QD1, 2001 SC170, 516641
291Spacewatch 1.8m telescope in Arizona, 14 in MPEC 2018-J38 -- 2018 JN, 2018 HO1, 2018 HJ2, 2018 HB, 2018 HA1, 2018 GR4, 2018 CA, 2018 BA7, 2017 VO15, 2017 SV20, 2016 CB194, 2010 WC9, 2002 JS2, 2001 EC
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2018-J49 & 2018-J51 -- 2018 JQ1, 2018 JM1
I52Steward Obs. Mt. Lemmon Station in Arizona, 52 in MPECs 2018-J35, 2018-J37, 2018-J38, 2018-J39, 2018-J40, 2018-J41, 2018-J42, 2018-J43, 2018-J44, 2018-J45, 2018-J46, 2018-J47, 2018-J48, 2018-J49, 2018-J50 & 2018-J51 -- 2018 JR1, 2018 JQ1, 2018 JP1, 2018 JO1, 2018 JO, 2018 JN1, 2018 JN, 2018 JM1, 2018 JM, 2018 JL1, 2018 JL, 2018 JK1, 2018 JK, 2018 JJ1, 2018 JH1, 2018 JG1, 2018 JF1, 2018 JF, 2018 JE1, 2018 JE, 2018 JC, 2018 HV2, 2018 HU1, 2018 HS3, 2018 HL2, 2018 HJ2, 2018 GW4, 2018 GT1, 2018 GQ5, 2018 GL1, 2018 GL, 2018 GG2, 2018 GF4, 2018 GA5, 2018 FV4, 2018 EQ4, 2018 EJ4, 2018 DB2, 2018 BY2, 2017 XH62, 2017 WH14, 2017 VL15, 2017 SE19, 2017 GT5, 2016 JP, 2016 GH135, 2015 MB54, 2015 JP, 2015 FR117, 2014 OA2, 2014 JC31, 2010 WC9
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 4 in MPECs 2018-J39, 2018-J41, 2018-J42 & 2018-J49 -- 2018 JQ1, 2018 JH1, 2018 JG1, 2018 JE1
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPEC 2018-J38 -- 2018 JD, 2017 VU14, 2016 TB57
L01Visnjan Obs., 4 in MPECs 2018-J35, 2018-J38, 2018-J39 & 2018-J49 -- 2018 JQ1, 2018 JN, 2018 JE1, 2010 WC9
198Wildberg Obs. in Germany, 1 in MPEC 2018-J49 -- 2018 JQ1
E08Wobblesock Obs. in New South Wales, 5 in MPECs 2018-J38, 2018-J47, 2018-J49 & 2018-J51 -- 2018 JY, 2018 JQ1, 2018 JO1, 2018 JM1, 2018 JA1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 May '18

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 is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few 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
2018 JL1JPL Sentry21402112-211544.0303e-08-8.67-8.810JPL: Computed at 14:04 today Pacific time based on 29 observations spanning 1.9882 days (2018-May-08.26382 to 2018-May-10.25203). Diameter approximately 0.015 km. from weighted mean H=26.72.
2018 JG1JPL Sentry21042103-210311.964e-07-6.82-6.820JPL: Computed at 13:58 today Pacific time based on 43 observations spanning 2.0132 days (2018-May-08.17968 to 2018-May-10.19287). Diameter approximately 0.042 km. from weighted mean H=24.55.
2018 JF1JPL Sentry21042105-210933.1387e-09-7.33-7.510JPL: Computed at 14:01 today Pacific time based on 32 observations spanning 1.9762 days (2018-May-08.17968 to 2018-May-10.15583). Diameter approximately 0.100 km. from weighted mean H=22.62.
2018 JNJPL Sentry15302100-210421.9861e-06-6.03-6.090JPL: Computed at 08:07 today Pacific time based on 97 observations spanning 4.9701 days (2018-May-05.42349 to 2018-May-10.39357). Diameter approximately 0.035 km. from weighted mean H=24.95.
2018 JDJPL Sentry15302061-209670.00024665389-4.53-4.530JPL: Computed at 08:03 today Pacific time based on 33 observations spanning 4.2144 days (2018-May-04.40029 to 2018-May-08.614703). Diameter approximately 0.016 km. from weighted mean H=26.69.
2018 HJ2JPL Sentry15302085-208514.889e-04-3.21-3.210JPL: Computed at 07:54 today Pacific time based on 85 observations spanning 16.976 days (2018-Apr-23.41101 to 2018-May-10.38694). Diameter approximately 0.046 km. from weighted mean H=24.32.
NEODyS1530208511.64e-05-4.65-4.650NEODyS: "Based on 67 optical observations (of which 0 are rejected as outliers) from 2018-04-23.412 to 2018-05-08.464."
2018 GR4JPL Sentry16062048-2111410.00025047682-4.78-5.050JPL: Computed at 09:01 today Pacific time based on 61 observations spanning 27.981 days (2018-Apr-12.31705 to 2018-May-10.29767). Diameter approximately 0.013 km. from weighted mean H=27.05.
NEODyS15302048-21162482.64e-04-4.76-5.030NEODyS: "Based on 59 optical observations (of which 1 are rejected as outliers) from 2018-04-12.318 to 2018-05-07.297."
2017 TA6JPL Sentry16062049-2117420.00014938715-5.12-5.430JPL: Computed at 08:42 today Pacific time based on 37 observations spanning 19.017 days (2017-Sep-30.49167 to 2017-Oct-19.50912). Diameter approximately 0.015 km. from weighted mean H=26.71.
2017 TU1JPL Sentry15302076-211681.629928e-06-6.58-6.990JPL: Computed at 08:07 today Pacific time based on 43 observations spanning 2.5792 days (2017-Oct-10.32694 to 2017-Oct-12.90617). Diameter approximately 0.020 km. from weighted mean H=26.15.
2017 RP16JPL Sentry15302065-2112103.502092e-06-6.71-7.090JPL: Computed at 07:52 today Pacific time based on 20 observations spanning 8.0112 days (2017-Sep-15.41118 to 2017-Sep-23.42238). Diameter approximately 0.012 km. from weighted mean H=27.23.
2017 BG92JPL Sentry15302045-2105161.13471023e-05-6.96-7.460JPL: Computed at 07:47 today Pacific time based on 13 observations spanning 7.1652 days (2017-Jan-28.39899 to 2017-Feb-04.56418). Diameter approximately 0.006 km. from weighted mean H=28.65.
2017 BE30JPL Sentry15302100-210014.830e-08-7.99-7.990JPL: Computed at 08:22 today Pacific time based on 30 observations spanning 7.0135 days (2017-Jan-27.53064 to 2017-Feb-03.5441). Diameter approximately 0.019 km. from weighted mean H=26.27.
2016 WGJPL Sentry15302076-2115245.803673e-06-4.24-4.940JPL: Computed at 08:13 today Pacific time based on 132 observations spanning 20.840 days (2016-Nov-04.59001 to 2016-Nov-25.43035). Diameter approximately 0.075 km. from weighted mean H=23.28.
2016 TC57JPL Sentry15302112-211211.228e-06-7.27-7.270JPL: Computed at 08:05 today Pacific time based on 38 observations spanning 23.120 days (2016-Oct-13.43124 to 2016-Nov-05.551384). Diameter approximately 0.013 km. from weighted mean H=27.06.
2016 JAJPL Sentry16062064-2117149.740563e-07-7.46-7.940JPL: Computed at 08:41 today Pacific time based on 50 observations spanning 10.057 days (2016-May-01.32646 to 2016-May-11.383784). Diameter approximately 0.011 km. from weighted mean H=27.51.
2016 HF3JPL Sentry16062078-207812.161e-06-5.75-5.750JPL: Computed at 08:43 today Pacific time based on 298 observations spanning 42.026 days (2016-Apr-27.30971 to 2016-Jun-08.33587). Diameter approximately 0.038 km. from weighted mean H=24.76.
2016 FE15JPL Sentry15302068-211636.11513e-07-8.02-8.040JPL: Computed at 07:46 today Pacific time based on 32 observations spanning 9.9900 days (2016-Mar-31.42378 to 2016-Apr-10.413817). Diameter approximately 0.006 km. from weighted mean H=28.77.
2016 FA14JPL Sentry15302072-207212.303e-08-8.68-8.680JPL: Computed at 07:47 today Pacific time based on 29 observations spanning 5.1571 days (2016-Mar-31.40005 to 2016-Apr-05.55716). Diameter approximately 0.012 km. from weighted mean H=27.31.
2016 EV84JPL Sentry16062056-209641.86004e-06-6.78-6.880JPL: Computed at 09:01 today Pacific time based on 103 observations spanning 5.9596 days (2016-Mar-10.37417 to 2016-Mar-16.33377). Diameter approximately 0.015 km. from weighted mean H=26.76.
2016 DK2JPL Sentry15302069-206911.512e-06-7.58-7.580JPL: Computed at 08:13 today Pacific time based on 28 observations spanning 3.1356 days (2016-Feb-27.20826 to 2016-Mar-01.34384). Diameter approximately 0.005 km. from weighted mean H=29.01.
2016 DK1JPL Sentry15342043-2118420.00026671872-4.77-5.220JPL: Computed at 08:33 today Pacific time based on 63 observations spanning 18.326 days (2016-Feb-27.16982 to 2016-Mar-16.495854). Diameter approximately 0.011 km. from weighted mean H=27.36.
2016 CK137JPL Sentry15302040-2118775.14628701e-05-5.56-5.970JPL: Computed at 08:22 today Pacific time based on 28 observations spanning 8.0051 days (2016-Feb-05.29335 to 2016-Feb-13.298416). Diameter approximately 0.012 km. from weighted mean H=27.34.
2015 UR67JPL Sentry15302091-209113.222e-06-6.29-6.290JPL: Computed at 08:07 today Pacific time based on 100 observations spanning 19.922 days (2015-Oct-31.3432 to 2015-Nov-20.26488). Diameter approximately 0.019 km. from weighted mean H=26.30.
2015 TL21JPL Sentry15302061-209563.41422e-06-6.12-6.570JPL: Computed at 07:42 today Pacific time based on 88 observations spanning 11.040 days (2015-Oct-08.23237 to 2015-Oct-19.272403). Diameter approximately 0.018 km. from weighted mean H=26.42.
2015 HE183JPL Sentry15302090-210533.156122e-06-7.13-7.140JPL: Computed at 07:25 today Pacific time based on 8 observations spanning 2.0408 days (2015-Apr-24.49532 to 2015-Apr-26.536079). Diameter approximately 0.008 km. from weighted mean H=28.18.
2015 GB1JPL Sentry15302031-209049.18299e-07-6.78-7.180JPL: Computed at 07:24 today Pacific time based on 35 observations spanning 20.002 days (2015-Mar-24.48324 to 2015-Apr-13.48511). Diameter approximately 0.016 km. from weighted mean H=26.57.
2015 EGJPL Sentry15302115-211511.040e-07-7.66-7.660JPL: Computed at 07:35 today Pacific time based on 85 observations spanning 5.9997 days (2015-Mar-09.3314 to 2015-Mar-15.33115). Diameter approximately 0.025 km. from weighted mean H=25.66.
2015 DD54JPL Sentry1530R E M O V E DJPL: Risk listing removed at 1419 UTC today
2015 BW516JPL Sentry15302046-207373.8639533e-05-5.53-5.590JPL: Computed at 07:18 today Pacific time based on 16 observations spanning 8.4369 days (2015-Jan-20.33292 to 2015-Jan-28.76983). Diameter approximately 0.010 km. from weighted mean H=27.65.
2015 BY3JPL Sentry15302033-2085101.023943e-06-6.90-7.390JPL: Computed at 07:22 today Pacific time based on 25 observations spanning 6.2083 days (2015-Jan-17.26337 to 2015-Jan-23.47166). Diameter approximately 0.011 km. from weighted mean H=27.50.
2014 YNJPL Sentry15302095-2116235.04182e-05-5.12-5.690JPL: Computed at 07:29 today Pacific time based on 80 observations spanning 37.860 days (2014-Dec-16.4088 to 2015-Jan-23.26902). Diameter approximately 0.024 km. from weighted mean H=25.72.
2010 WC9JPL Sentry0332R E M O V E DJPL: Risk listing removed at 0244 UTC today

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 '18

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

2314Generated Traffic Report
2140Noted that JPL Sentry has posted 2018 JL1 as an impact risk - see above
2104Noted that JPL Sentry has posted 2018 JF1 as an impact risk - see above
Noted that JPL Sentry has posted 2018 JG1 as an impact risk - see above
2038Grabbed MPEC 2018-J43 - 2018 JJ1 - see above
Grabbed MPEC 2018-J44 - 2018 JK1 - see above
Grabbed MPEC 2018-J45 - 2018 JL1 - see above
Grabbed MPEC 2018-J46 - 2018 JN1 - see above
Grabbed MPEC 2018-J47 - 2018 JO1 - see above
Grabbed MPEC 2018-J48 - 2018 JP1 - see above
Grabbed MPEC 2018-J49 - 2018 JQ1 - see above
Grabbed MPEC 2018-J50 - 2018 JR1 - see above
Grabbed MPEC 2018-J51 - 2018 JM1 - see above
1943Grabbed MPEC 2018-J39 - 2018 JE1 - see above
Grabbed MPEC 2018-J40 - 2018 JF1 - see above
Grabbed MPEC 2018-J41 - 2018 JG1 - see above
Grabbed MPEC 2018-J42 - 2018 JH1 - see above
1606Noted that JPL Sentry has updated its 2016 EV84 risk assessment - see above
Noted that JPL Sentry has updated its 2016 HF3 risk assessment - see above
Noted that JPL Sentry has updated its 2016 JA risk assessment - see above
Noted that JPL Sentry has updated its 2017 TA6 risk assessment - see above
Noted that JPL Sentry has updated its 2018 GR4 risk assessment - see above
1534Noted that JPL Sentry has updated its 2016 DK1 risk assessment - see above
1530Noted that JPL Sentry has updated its 2014 YN risk assessment - see above
Noted that JPL Sentry has updated its 2015 BW516 risk assessment - see above
Noted that JPL Sentry has updated its 2015 BY3 risk assessment - see above
Noted that JPL Sentry has removed 2015 DD54 as an impact risk - see above
Noted that JPL Sentry has updated its 2015 EG risk assessment - see above
Noted that JPL Sentry has updated its 2015 GB1 risk assessment - see above
Noted that JPL Sentry has updated its 2015 HE183 risk assessment - see above
Noted that JPL Sentry has updated its 2015 TL21 risk assessment - see above
Noted that JPL Sentry has updated its 2015 UR67 risk assessment - see above
Noted that JPL Sentry has updated its 2016 CK137 risk assessment - see above
Noted that JPL Sentry has updated its 2016 DK2 risk assessment - see above
Noted that JPL Sentry has updated its 2016 FA14 risk assessment - see above
Noted that JPL Sentry has updated its 2016 FE15 risk assessment - see above
Noted that JPL Sentry has updated its 2016 TC57 risk assessment - see above
Noted that JPL Sentry has updated its 2016 WG risk assessment - see above
Noted that JPL Sentry has updated its 2017 BE30 risk assessment - see above
Noted that JPL Sentry has updated its 2017 BG92 risk assessment - see above
Noted that JPL Sentry has updated its 2017 RP16 risk assessment - see above
Noted that JPL Sentry has updated its 2017 TU1 risk assessment - see above
Noted that NEODyS has updated its 2018 GR4 risk assessment - see above
Noted that JPL Sentry has updated its 2018 HJ2 risk assessment - see above
Noted that NEODyS has updated its 2018 HJ2 risk assessment - see above
Noted that JPL Sentry has updated its 2018 JD risk assessment - see above
Noted that JPL Sentry has updated its 2018 JN risk assessment - see above
Grabbed MPEC 2018-J37 - 2015 MB54 - see above
Grabbed MPEC 2018-J38 - Daily Orbit Update - see above
0332Noted that JPL Sentry has removed 2010 WC9 as an impact risk - see above
Grabbed MPEC 2018-J35 - 2010 WC9 - see above
Grabbed MPEC 2018-J36 - 2015 BP519 - see above