2018-06-14 Tracking News

Contents on 14 June '18

Traffic Report -- seven objects
IAU Minor Planet Center
- NEOCP Activity -- 67 listings
- New MPECs -- five MPECs
Observers -- 27 observers
Impact Risk Monitoring -- five objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 941 risk-listed objects, 30 have had news in the last 31 days. Updated at 1633 UTC on 14 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)

The latest A/CC news is available via framed access, 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 14 June '18

Seven objects reported inside ten LD

Seven asteroidal objects are reported within ten lunar distances (LD) of our planet today. Intruder 2018 LV3, which is the nearest, enters the Earth-Moon system, coming in from 2.88 to 0.90 LD. Also inside Earth's sphere of gravitational influence, risk-listed 2018 LD1 comes its closest to our planet this time around, reaching 1.56 LD at 1558 UTC.

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
0.86 LD tomorrow	2018 LV3	17 m	0.90 from 2.88 LD	June 11 - 19	intruder today, enters Earth SOI - DOU

1.56 LD today	2018 LD1	18 m	1.56 LD	June 10 - 18	Earth closest at 1558 UTC, Moon closest 1.99 LD at 2135 UTC, risk - DOU

3.64 LD June 11	2018 LW3	21 m	6.19 to 8.00 LD	June 7 - 16	DOU
3.93 LD June 9	2018 LR2	24 m	9.69 to 11.74 LD	June 5 - 14	exits ten LD, risk - DOU

5.56 LD June 10	2018 EJ4	186 m	7.11 to 8.05 LD	June 4 - 16	radar/NHATS target
7.62 LD tomorrow	2018 LK	154 m	7.99 from 9.21 LD	yesterday - June 18	DOU
8.96 LD June 11	2015 DP155	162 m	9.38 to 9.72 LD	June 6 - 15	NHATS target - DOU

Approaching
6.0 LD June 29*	2018 LR3	18 m	13.7 from 14.4 LD	June 20 - July 8	Earth passage uncertainty +/- 6 mins.*, NHATS target, risk - DOU

This report was generated at 1922 UTC with follow-up in today's DOU MPEC for seven objects in the active traffic table here, and for four departed objects: 68347 2001 KB67, 1999 FN19, and risk-listed 2018 LM and 2018 JG1, plus astrometry from March for 450894 2008 BT18.

<< Reading: NEODyS announced to the Minor Planet Mailing List today that it has put up a beta version of its new NEOScan service. It posts impact probabilities for newly discovered near-Earth objects on the NEO Confirmation Page (NEOCP) and complements, and is best used in junction with, NASA/JPL's comparable Scout service for alerting observers to impact risks. Speaking of impactors, a preprint was posted today about the orbital evolution of 2018 LA (links), suggesting a relationship with other known asteroids and bolides.

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 14 June '18

The MPC's NEO Confirmation Page has 67 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 67 objects listed. Of these, 39 were "one nighters." So far The Tracking News has counted a total of 77 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 14 June '18

Minor Planet Electronic Circulars

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

MPEC 2018-L72 time-stamped "11:27 UT" - 2015 BP515 - see below
MPEC 2018-L73 time-stamped "12:03 UT" - Daily Orbit Update - see below
MPEC 2018-L74 time-stamped "14:25 UT" - 2018 LN4 - see below
MPEC 2018-L75 time-stamped "14:37 UT" - 2018 LM4 - see below
MPEC 2018-L76 time-stamped "16:49 UT" - Comet P/2005 R1 = 2018 L3 (NEAT)

MPEC 2018-L76 - "16:49 UT" - Comet P/2005 R1 = 2018 L3 (NEAT)

PK18L030 P/2018 L3 (q=2.068 AU, Q=8.982 AU, TP=2018 Sept. 14.25047 TT) was picked up at 0432 UT on 13 June by ESA Optical Ground Station (ESA OGS), observing it at June 13.19-20p3 and 14.18-19p3.
PK05R010 P/2005 R1 (NEAT) (q=2.047 AU, Q=8.960 AU, TP=2005 Oct. 8.41305 TT)

MPEC 2018-L75 - "14:37 UT" - 2018 LM4

K18L04M 2018 LM4 (risk listed, H=18.5 ~676m) was picked up at 1047 UT on 11 June by the Mt. Lemmon Survey (MLS), observing it at June 11.45-46p4. This detection was confirmed by Visnjan Obs. (June 12.03-04p3), Steward Obs. Mt. Lemmon Station (June 12.41p3, 13.42-43p3 & 14.46p3), and ESA OGS (June 13.12p3).

MPEC 2018-L74 - "14:25 UT" - 2018 LN4

K18L04N 2018 LN4 (small asteroid, H=23.8 ~59m) was picked up at 1034 UT on 12 June by ATLAS Haleakala, observing it at June 12.44-47p4 and 13.46-49p4. This detection was confirmed by SONEAR (June 13.17-18p3), ATLAS Mauna Loa (June 13.45-49p6), Arcadia Obs. (June 13.52-53p3), Moriyama Obs. (June 13.57p2), Wobblesock Obs. (June 14.50-51p3), and Mt. John Obs. (June 14.54-55p4).

<< DOU on 14 June '18 >> MPEC 2018-L73 - "12:03 UT" - Daily Orbit Update

Observations of risk-listed objects
K18L03R 2018 LR3 (small asteroid, arc=4 days, H=26.3 ~19m, close passer, NHATS target) from UH/Tholen NEO Follow-Up 2.24m Telescope (June 13.25-26p2), Steward Mt. Lemmon Sta. (June 14.20p4), and the Spacewatch 1.8m telescope (June 14.25-26p3)
K18L02R 2018 LR2 (small asteroid, arc=5 days, H=25.7 ~25m, close passer) from Tholen 2.24m (June 13.60p2)
K18L01D 2018 LD1 (small asteroid, arc=8 days, H=26.2 ~19m, close passer) from Tholen 2.24m (June 13.39p3)
K18L01B 2018 LB1 (Q=4.582 AU, arc=26 days, H=20.0 ~339m) from LCO Cerro Tololo A (June 13.21-23p3), LCO McDonald Obs. (June 13.21-23p3), Tholen 2.24m (June 13.27p2), and Spacewatch 1.8m (June 14.21-23p3)
K18L00M 2018 LM (small asteroid, arc=9 days, H=25.1 ~32m, close passer, NHATS target) from Tholen 2.24m (June 13.24p2)
K18J01G 2018 JG1 (small asteroid, arc=36 days, H=24.5 ~43m, close passer) from Tholen 2.24m (June 13.61p3 at G=22.28-52)
Observations of close-passing objects
K18L03W 2018 LW3 (arc=2 days, H=26.0 ~21m) from ATLAS Mauna Loa (June 13.43-47p4) and ATLAS Haleakala (June 13.44-48p6)
K18L03V 2018 LV3 (arc=3 days, H=26.5 ~17m) from ESA OGS (June 13.91p3) and Steward Mt. Lemmon Sta. (June 14.18p4)
K18L00K 2018 LK (arc=59 days, H=21.7 ~155m) from MLS (June 13.40-41p4) and Steward Mt. Lemmon Sta. (June 14.37p4)
K15DF5P 2015 DP155 (arc=2 opp, H=21.5 ~170m, NHATS target) from Northolt Branch Obs. (June 12.93-99p19), SONEAR (June 13.18-19p3), and ATLAS Haleakala (June 13.58-60p3)
J99F19N 1999 FN19 (arc=2 opp, H=22.5 ~107m, NHATS target, radar support) from MLS (June 13.40-41p3)
j0894 450894 2008 BT18 from the Catalina Sky Survey (CSS) (March 21.36-38p4)
68347 68347 2001 KB67 (radar support) from Purple Mtn. Obs. Xuyi Station (June 12.59-61p3), CSS (June 13.30-31p4), and Pan-STARRS 2 (PS2) (June 13.44-47p4)
Observation campaigns (NHATS targets, radar support)
K18L03S 2018 LS3 (arc=4 days, H=25.3 ~29m, NHATS) from ESA OGS (June 13.90p2) and Steward Mt. Lemmon Sta. (June 14.31-32p3)
K18L02V 2018 LV2 (arc=6 days, H=25.2 ~31m, NHATS) from Discovery Channel Telescope (DCT) (June 12.36-38p9)
K18L02Q 2018 LQ2 (arc=9 days, H=24.7 ~39m, NHATS) from DCT (June 12.40-42p6), PS2 (June 13.45-47p3), and the Spacewatch 0.9m telescope (June 14.22-23p3)
K18L02M 2018 LM2 (arc=8 days, H=24.3 ~47m, NHATS) from Spacewatch 1.8m (June 14.24-25p2)
K18L01C 2018 LC1 (arc=8 days, H=24.8 ~37m, NHATS) from DCT (June 12.27-29p9)
05604 5604 1992 FE (radar) from ATLAS Haleakala (June 13.34-37p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K18L03U 2018 LU3 (arc=4 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (June 14.27p4)
K18L03T 2018 LT3 (arc=4 days, H=24.8 ~37m) from ESA OGS (June 13.91p2) and Steward Mt. Lemmon Sta. (June 14.22p3)
K18L03Q 2018 LQ3 (i=36.2°, arc=4 days, H=22.2 ~123m) from North Obs. (June 12.91-92p4) and Steward Mt. Lemmon Sta. (June 14.18p4)
K18L01G 2018 LG1 (arc=8 days, H=23.3 ~74m) from CSS (June 13.26-27p4) and Steward Mt. Lemmon Sta. (June 14.22p4)
K18L01F 2018 LF1 (arc=9 days, H=24.5 ~43m) from PS2 (June 13.50-52p3) and Steward Mt. Lemmon Sta. (June 14.26-27p4)
K18L00G 2018 LG (arc=12 days, H=22.6 ~102m) from Steward Mt. Lemmon Sta. (June 14.27p4)
K16EF8E 2016 EE158 (arc=2 opp, H=23.9 ~56m) from Astronomical Research Obs. Westfield (June 5.33-36p3 at V=22.0-22.4)
K15J00P 2015 JP (arc=2 opp, H=22.8 ~93m) from ARO Westfield (June 8.18-22p3 at V=22.0-22.3)
K15A45M 2015 AM45 (arc=3 opp, H=22.1 ~129m) from Pan-STARRS 1 (PS1) (June 13.55-57p3)
J99L01K 1999 LK1 (arc=4 opp, H=22.1 ~129m) from MLS (June 13.26-28p4)
K17Y05H 2017 YH5 (arc=172 days, H=21.8 ~148m) from ESA OGS (June 12.92p1 & 13.92p3)
K15T00K 2015 TK (arc=3 opp, H=21.9 ~141m) from Tholen 2.24m (May 23.58p1 at G=22.60 & June 13.55p1 at G=22.22)
Observations of other objects
K18L03E 2018 LE3 (Q=4.129 AU, arc=6 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (June 14.29p4)
K18L03C 2018 LC3 (i=44.4°, arc=6 days, H=18.7 ~616m) from CSS (June 13.41-42p4)
K18L02P 2018 LP2 (arc=9 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (June 14.33-34p3)
K18L02L 2018 LL2 (Q=4.209 AU, arc=20 days, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (June 14.27-28p4)
K18L00N 2018 LN (arc=10 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (June 14.17p3)
K18K00V 2018 KV (Q=4.391 AU, arc=61 days, H=17.1 ~1.29 km) from Xuyi Sta. (June 13.66-67p2)
K18J03C 2018 JC3 (arc=2 opp, H=20.0 ~339m) from PS2 (June 13.38-41p4)
K18J01E 2018 JE1 (arc=37 days, H=19.9 ~355m) from ATLAS Haleakala (June 13.35-38p4)
K17W14H 2017 WH14 (arc=2 opp, H=18.0 ~851m) from Xuyi Sta. (June 13.64-67p2)
K15X55P 2015 XP55 (i=42.2°, arc=2 opp, H=21.6 ~162m) from ARO Westfield (May 24.25-27p3 at V=22.1-2)
K15FB8P 2015 FP118 (arc=2 opp, H=19.3 ~467m) from Xuyi Sta. (June 13.51-54p3)
K15BV1G 2015 BG311 (Q=4.028 AU, arc=4 opp, H=18.0 ~851m) from MLS (June 13.44-46p4)
K15A16X 2015 AX16 (arc=4 opp, H=18.0 ~851m) from MLS (June 13.44-46p3)
K14U00V 2014 UV (i=36.0°, arc=2 opp, H=20.5 ~269m) from ARO Westfield (June 5.32-36p3 at V=22.1-2)
K14F07D 2014 FD7 (arc=3 opp, H=21.5 ~170m) from WISE (June 11.27p1, 11.47p1, 11.60p2, 11.80p1 & 11.99p1)
K12M04R 2012 MR4 (i=53.1°, arc=4 opp, H=17.6 ~1.02 km) from PS1 (June 13.53-57p4)
K12L11F 2012 LF11 (arc=3 opp, H=20.8 ~234m) from Spacewatch 0.9m (June 13.42-43p3)
K05Y93W 2005 YW93 (Q=4.091 AU, arc=3 opp, H=19.2 ~490m) from PS1 (June 13.41-45p4)
K05E29Z 2005 EZ29 (arc=3 opp, H=20.3 ~295m) from ARO Westfield (May 24.32-36p3 at V=22.0-22.4)
K04L00H 2004 LH (i=39.5°, arc=4 opp, H=18.8 ~589m) from ATLAS Haleakala (June 13.35-38p4)
J99R02V 1999 RV2 (arc=3 opp, H=18.7 ~616m) from PS1 (June 13.55-58p3)
p8426 518426 2002 ON4 from PS1 (June 13.41-45p4)
p6976 516976 2012 HM1 from CSS (June 13.30-31p3)
p6420 516420 2003 FS2 from the Palomar Transient Factory (PTF) (June 11.36p1 & 11.41p1)
o4711 504711 2009 SP171 from CSS (June 13.32-33p4) and ATLAS Haleakala (June 13.49-52p4)
n5829 495829 1995 LG from Xuyi Sta. (June 12.76-80p5)
n5615 495615 2015 PQ291 from ATLAS Haleakala (June 13.32-35p4)
l4574 474574 2004 FG1 from PTF (June 11.28-34p4 & 13.27-34p5)
k3664 463664 2014 JY24 from WISE (June 11.20p1, 11.40p1, 11.46p1, 11.53p1, 11.66p1, 11.79p1, 11.92p1 & 12.18p1)
j5550 455550 2004 JO2 from ATLAS Haleakala (June 13.53-56p3)
j0648 450648 2006 UC63 from CSS (June 13.28-29p4)
h4344 434344 2004 RV10 from CSS (March 21.26-28p4)
f5029 415029 2011 UL21 from CSS (June 13.38-40p4)
e8752 408752 1991 TB2 from ATLAS Haleakala (June 13.31-34p4)
d7237 397237 2006 KZ112 from CSS (June 13.38-40p3)
d5143 395143 2010 CN1 from PS1 (June 13.36-39p4)
Z0988 350988 2003 GW from CSS (June 13.45-46p3)
X8172 338172 2002 RV112 from PS1 (June 13.38-40p3)
X7228 337228 2000 FL1 from Xuyi Sta. (June 13.60-62p3)
U2591 302591 2002 QE7 from ESA OGS (June 12.13-14p2)
R8327 278327 2007 HA59 from ATLAS Mauna Loa (June 13.28-31p4)
R7570 277570 2005 YP180 from Xuyi Sta. (June 12.54-57p4)
Q5196 265196 2004 BW58 from CSS (March 21.31-33p4)
O3298 243298 2008 EN82 from Xuyi Sta. (June 12.63-64p2)
O2643 242643 2005 NZ6 from ATLAS Haleakala (June 13.38-41p4)
J4126 194126 2001 SG276 from CSS (March 21.43-44p4)
I6822 186822 2004 FE31 from Xuyi Sta. (June 13.52-55p3)
I5853 185853 2000 ER70 from CSS (March 21.40-42p4) and Xuyi Sta. (June 13.60-62p3)
G2854 162854 2001 DE47 from Xuyi Sta. (June 12.59-61p3) and PS2 (June 13.45-47p3)
F3957 153957 2002 AB29 from Northolt Branch Obs. (June 12.99-00p9) and CSS (June 13.34-36p4)
E1484 141484 2002 DB4 from ATLAS Haleakala (June 13.27-29p3)
E0039 140039 2001 SO73 from CSS (June 13.43-44p3)
D9359 139359 2001 ME1 from ATLAS Haleakala (June 13.45-48p4) and Xuyi Sta. (June 13.55-58p2)
D9345 139345 2001 KA67 from ATLAS Haleakala (June 13.54-56p5)
D8847 138847 2000 VE62 from ATLAS Mauna Loa (June 13.39-43p8)
96189 96189 Pygmalion (1991 NT3) from ATLAS Haleakala (June 13.58-60p3)
86067 86067 1999 RM28 from PTF (June 13.30-36p4) and PS2 (June 13.51-54p6)
85490 85490 1997 SE5 from ATLAS Haleakala (June 13.38-42p4)
68950 68950 2002 QF15 from ATLAS Haleakala (June 13.59-62p4)
68350 68350 2001 MK3 from ATLAS Haleakala (June 13.52-55p4)
68348 68348 2001 LO7 from ATLAS Haleakala (June 13.34-37p4)
68346 68346 2001 KZ66 from CSS (June 13.43-44p4)
66391 66391 1999 KW4 from WISE (June 12.26p1, 12.32p1, 12.39p1, 12.45p1, 12.52p1 & 12.58p1) and PTF (June 13.22-26p4)
36183 36183 1999 TX16 from ATLAS Haleakala (June 13.39-43p7)
24761 24761 Ahau (1993 BW2) from CSS (June 13.27-29p4)
18882 18882 1999 YN4 from Xuyi Sta. (June 13.77-80p3)
16834 16834 1997 WU22 from CSS (June 13.43-44p4)
15745 15745 Yuliya (1991 PM5) from CSS (June 13.32-34p4), PS2 (June 13.45-48p4), and ATLAS Haleakala (June 13.49-52p4)
13553 13553 Masaakikoyama (1992 JE) from ATLAS Haleakala (June 13.58-60p4)
11066 11066 Sigurd (1992 CC1) from CSS (March 21.11-13p4)
09856 9856 1991 EE from MASTER IAC Obs. (March 20.03-09p6) and ATLAS Mauna Loa (June 13.28-30p4)
05626 5626 1991 FE from Xuyi Sta. (June 13.56-58p3)
03752 3752 Camillo (1985 PA) from ATLAS Mauna Loa (June 13.33-36p4)
01981 1981 Midas (1973 EA) from CSS (March 21.16-17p4)
01866 1866 Sisyphus (1972 XA) from ATLAS Mauna Loa (June 13.29-31p4)
01865 1865 Cerberus (1971 UA) from CSS (June 13.41-42p4)
01864 1864 Daedalus (1971 FA) from CSS (March 21.18-19p4)
01580 1580 Betulia (1950 KA) from ATLAS Mauna Loa (June 13.28-30p4)
01036 1036 Ganymed (1924 TD) from ATLAS Haleakala (June 13.26-30p4)
00719 719 Albert (1911 MT) from MLS (June 13.35-37p4)

MPEC 2018-L72 - "11:27 UT" - 2015 BP515

K15Bp5P 2015 BP515 (H=21.0 ~214m) from ESA OGS (June 12.05-06p3 & 14.03-04p2)

Observers on 14 June '18

A total of 27 observers appear in today's MPECs.

Code	Observer / observatory
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2018-L74 -- 2018 LN4
`H21`	Astronomical Research Obs. Westfield in Illinois, 5 in MPEC 2018-L73 -- 2016 EE158, 2015 XP55, 2015 JP, 2014 UV, 2005 EZ29
`T05`	ATLAS Haleakala in Hawaii, 23 in MPECs 2018-L73 & 2018-L74 -- 2018 LW3, 2018 LN4, 2018 JE1, 2015 DP155, 2004 LH, 96189, 85490, 68950, 68350, 68348, 504711, 495615, 455550, 408752, 36183, 242643, 15745, 141484, 139359, 139345, 13553, 5604, 1036
`T08`	ATLAS Mauna Loa in Hawaii, 8 in MPECs 2018-L73 & 2018-L74 -- 2018 LW3, 2018 LN4, 278327, 138847, 9856, 3752, 1866, 1580
`703`	Catalina Sky Survey (CSS) in Arizona, 24 in MPEC 2018-L73 -- 2018 LG1, 2018 LC3, 68347, 68346, 516976, 504711, 450894, 450648, 434344, 415029, 397237, 350988, 265196, 24761, 194126, 185853, 16834, 15745, 153957, 140039, 11066, 1981, 1865, 1864
`G37`	Discovery Channel Telescope (DCT) in Arizona, 3 in MPEC 2018-L73 -- 2018 LV2, 2018 LQ2, 2018 LC1
`J04`	ESA Optical Ground Station (ESA OGS) in the Canary Islands, 8 in MPECs 2018-L72, 2018-L73, 2018-L75 & 2018-L76 -- 2018 LV3, 2018 LT3, 2018 LS3, 2018 LM4, P/2018 L3, 2017 YH5, 2015 BP515, 302591
`W85`	LCO Cerro Tololo A in Chile, 1 in MPEC 2018-L73 -- 2018 LB1
`V37`	LCO McDonald Obs. in Texas, 1 in MPEC 2018-L73 -- 2018 LB1
`Z22`	MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2018-L73 -- 9856
`900`	Moriyama Obs. in Japan, 1 in MPEC 2018-L74 -- 2018 LN4
`474`	Mt. John Obs. in New Zealand, 1 in MPEC 2018-L74 -- 2018 LN4
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2018-L73 & 2018-L75 -- 2018 LM4, 2018 LK, 2015 BG311, 2015 AX16, 1999 LK1, 1999 FN19, 719
`J69`	North Obs. in England, 1 in MPEC 2018-L73 -- 2018 LQ3
`Z80`	Northolt Branch Obs. in England, 2 in MPEC 2018-L73 -- 2015 DP155, 153957
`I41`	Palomar Transient Factory (PTF) in southern California, 4 in MPEC 2018-L73 -- 86067, 66391, 516420, 474574
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 7 in MPEC 2018-L73 -- 2015 AM45, 2012 MR4, 2005 YW93, 1999 RV2, 518426, 395143, 338172
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 7 in MPEC 2018-L73 -- 2018 LQ2, 2018 LF1, 2018 JC3, 86067, 68347, 162854, 15745
`D29`	Purple Mtn. Obs. Xuyi Station in China, 14 in MPEC 2018-L73 -- 2018 KV, 2017 WH14, 2015 FP118, 68347, 495829, 337228, 277570, 243298, 18882, 186822, 185853, 162854, 139359, 5626
`Y00`	SONEAR in Brazil, 2 in MPECs 2018-L73 & 2018-L74 -- 2018 LN4, 2015 DP155
`691`	Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2018-L73 -- 2018 LQ2, 2012 LF11
`291`	Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2018-L73 -- 2018 LR3, 2018 LM2, 2018 LB1
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 15 in MPECs 2018-L73 & 2018-L75 -- 2018 LV3, 2018 LU3, 2018 LT3, 2018 LS3, 2018 LR3, 2018 LQ3, 2018 LP2, 2018 LN, 2018 LM4, 2018 LL2, 2018 LK, 2018 LG1, 2018 LG, 2018 LF1, 2018 LE3
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 7 in MPEC 2018-L73 -- 2018 LR3, 2018 LR2, 2018 LM, 2018 LD1, 2018 LB1, 2018 JG1, 2015 TK
`L01`	Visnjan Obs., 1 in MPEC 2018-L75 -- 2018 LM4
`C51`	WISE in Earth polar orbit, 3 in MPEC 2018-L73 -- 2014 FD7, 66391, 463664
`E08`	Wobblesock Obs. in New South Wales, 1 in MPEC 2018-L74 -- 2018 LN4

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 14 June '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 LM4	JPL Sentry	1633	2028-2118	38	3.253695e-07	-3.13	-3.95	0	JPL: Computed at 09:08 today Pacific time based on 19 observations spanning 3.0085 days (2018-Jun-11.44999 to 2018-Jun-14.4585). Diameter approximately 0.700 km. from weighted mean H=18.42.

2018 LR3	JPL Sentry	1551	2076-2113	8	7.88573e-06	-6.04	-6.11	0	JPL: Computed at 07:42 today Pacific time based on 26 observations spanning 3.9362 days (2018-Jun-10.32538 to 2018-Jun-14.26157). Diameter approximately 0.019 km. from weighted mean H=26.31.

2018 LB1	JPL Sentry	1551	R E M O V E D						JPL: Risk listing removed at 1414 UTC today

2018 LM	JPL Sentry	1551	2112-2116	2	9.632e-07	-6.59	-6.70	0	JPL: Computed at 07:30 today Pacific time based on 76 observations spanning 8.9893 days (2018-Jun-04.25437 to 2018-Jun-13.243662). Diameter approximately 0.031 km. from weighted mean H=25.17.

2018 JG1	JPL Sentry	1551	R E M O V E D						JPL: Risk listing removed at 1416 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 14 June '18

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

1922	Generated Traffic Report
1708	Grabbed MPEC 2018-L76 - Comet P/2005 R1 = 2018 L3 (NEAT) - see above
1633	Noted that JPL Sentry has posted 2018 LM4 as an impact risk - see above
1551	Noted that JPL Sentry has removed 2018 JG1 as an impact risk - see above Noted that JPL Sentry has removed 2018 LB1 as an impact risk - see above Noted that JPL Sentry has updated its 2018 LM risk assessment - see above Noted that JPL Sentry has updated its 2018 LR3 risk assessment - see above Grabbed MPEC 2018-L72 - 2015 BP515 - see above Grabbed MPEC 2018-L73 - Daily Orbit Update - see above Grabbed MPEC 2018-L74 - 2018 LN4 - see above Grabbed MPEC 2018-L75 - 2018 LM4 - see above

http://www.HohmannTransfer.com/mn/18/18165_0614.htm
Publisher information, privacy statement, and disclaimer.
This page is © Copyright 2018 Columbine of Maine - All Rights Reserved
Any mentioned trademarks are the property of their respective owners.
Various tabular formats and data used on this page are acknowledged as belonging to JPL, MPC, NEODyS, and/or others.
Do NOT copy, mirror, or embed this page, but you are welcome to link to it, and you may embed the RSS news feed. All information here is subject to very frequent change during the day of news compilation. Individuals may make copies for their own private, non-commercial use. Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com>.