Contents  on 17 June '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 17 June '18

Three objects reported inside ten LD

There are three asteroids known to be moving within ten lunar distances (LD) of our home world today. Nearest is risk-listed intruder 2018 LV3, which is outbound from 4.78 to 7.24 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
0.86 LD June 15 2018 LV3 17 m  4.78 to 7.24 LD June 11 - 19 intruder, risk
1.56 LD June 14 2018 LD1 18 m  5.94 to 8.33 LD June 10 - 18 risk
7.62 LD June 15 2018 LK 155 m  8.27 to 9.70 LD June 13 - 18
Approaching (sorted by 10-LD bubble entry date)
6.50 LD June 21 2018 LS5 15 m  10.20 from 11.85 LD tomorrow - June 25 NEW - MPEC
5.22 LD June 21 2018 LX5 29 m  11.20 from 13.60 LD tomorrow - June 24 NEW - MPEC
6.02 LD June 29 2018 LR3 18 m  11.51 from 12.22 LD June 20 - July 8 NHATS target, risk - DOU

This report was generated at 2020 UTC with the discoveries of approaching objects 2018 LX5 (MPEC) and 2018 LS5 (MPEC), and of already departed risk-listed 2018 LT5 (MPEC), which flew by us at 9.25 LD on June 6th. Today's DOU MPEC has follow-up for approaching risk-listed 2018 LR3 and for departed objects 2018 LR2, 2015 DP155, 68347 2001 KB67, and risk-listed 2018 LM, plus astrometry from May for 2018 KN2 and 2016 HP6.



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 17 June '18

The MPC's NEO Confirmation Page has 91 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 91 objects listed. Of these, 39 were "one nighters." So far The Tracking News has counted a total of 130 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 17 June '18

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 25 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-M26 - "18:43 UT" - 2018 LW5


MPEC 2018-M25 - "18:22 UT" - 2018 MA


MPEC 2018-M24 - "18:19 UT" - 2018 LA6


MPEC 2018-M23 - "18:15 UT" - 2018 LZ5


MPEC 2018-M22 - "18:12 UT" - 2018 LY5


MPEC 2018-M21 - "18:08 UT" - 2018 LX5


MPEC 2018-M20 - "18:04 UT" - 2018 LV5


MPEC 2018-M19 - "17:27 UT" - 2018 LU5


MPEC 2018-M18 - "17:25 UT" - 2018 LT5


MPEC 2018-M17 - "17:22 UT" - 2018 LS5


MPEC 2018-M16 - "17:20 UT" - 2018 LR5


MPEC 2018-M15 - "17:17 UT" - 2018 LQ5


MPEC 2018-M14 - "17:15 UT" - 2018 LP5


MPEC 2018-M13 - "17:12 UT" - 2018 LO5


MPEC 2018-M12 - "15:41 UT" - 2018 LN5


MPEC 2018-M11 - "15:37 UT" - 2018 LM5


MPEC 2018-M10 - "15:33 UT" - 2018 LL5


MPEC 2018-M09 - "15:29 UT" - 2018 LK5


MPEC 2018-M08 - "15:26 UT" - 2018 LJ5


MPEC 2018-M07 - "15:22 UT" - 2018 LH5


MPEC 2018-M06 - "15:18 UT" - 2018 LG5


MPEC 2018-M05 - "15:14 UT" - 2018 LF5


MPEC 2018-M04 - "14:08 UT" - 2014 UF176


MPEC 2018-M03 - "14:05 UT" - 1999 RB32


<< DOU on 17 June '18 >>  MPEC 2018-M02 - "12:03 UT" - Daily Orbit Update

Observers  on 17 June '18

A total of 41 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 12 in MPECs 2018-M02, 2018-M05, 2018-M06, 2018-M14, 2018-M19, 2018-M20 & 2018-M22 -- 2018 LY5, 2018 LV5, 2018 LU5, 2018 LP5, 2018 LG5, 2018 LF5, 2018 KH, 2018 GL, 2018 GB4, 2017 SB14, 2005 EZ29, 363626
T05ATLAS Haleakala in Hawaii, 20 in MPEC 2018-M02 -- 2018 KR2, 2018 KE3, 2005 UY5, 96189, 90367, 86324, 67367, 65706, 518469, 511523, 444935, 436775, 405212, 385843, 18882, 17274, 6456, 5646, 4197, 1685
T08ATLAS Mauna Loa in Hawaii, 14 in MPEC 2018-M02 -- 2018 LN4, 2018 KC3, 2013 QH10, 85989, 68350, 68347, 66391, 467309, 455550, 17181, 15745, 154268, 139345, 1627
073Bucharest Obs. in Romania, 1 in MPEC 2018-M02 -- 2015 DP155
X74Campo dos Amarais Obs., 1 in MPEC 2018-M02 -- 4954
160Castelmartini Obs. in Italy, 11 in MPECs 2018-M02 & 2018-M21 -- 2018 LX5, 2015 XK1, 68950, 455550, 415029, 162168, 153957, 139345, 13553, 7889, 719
703Catalina Sky Survey in Arizona, 1 in MPEC 2018-M05 -- 2018 LF5
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 14 in MPECs 2018-M03, 2018-M07, 2018-M08, 2018-M09, 2018-M10, 2018-M11, 2018-M14, 2018-M15, 2018-M17, 2018-M18, 2018-M19, 2018-M23, 2018-M24 & 2018-M25 -- 2018 MA, 2018 LZ5, 2018 LU5, 2018 LT5, 2018 LS5, 2018 LQ5, 2018 LP5, 2018 LM5, 2018 LL5, 2018 LK5, 2018 LJ5, 2018 LH5, 2018 LA6, 1999 RB32
G58Chabot Obs. in northern California, 2 in MPECs 2018-M05 & 2018-M06 -- 2018 LG5, 2018 LF5
I19El Gato Gris Obs. in Argentina, 1 in MPEC 2018-M07 -- 2018 LH5
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPECs 2018-M05 & 2018-M17 -- 2018 LS5, 2018 LF5
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2018-M21 -- 2018 LX5
157Frasso Sabino Obs. in Italy, 2 in MPEC 2018-M02 -- 2018 KT, 2018 GA5
J77Golden Hill Obs. in England, 2 in MPECs 2018-M05 & 2018-M13 -- 2018 LO5, 2018 LF5
J95Great Shefford Obs. in England, 4 in MPECs 2018-M05, 2018-M06, 2018-M13 & 2018-M21 -- 2018 LX5, 2018 LO5, 2018 LG5, 2018 LF5
J81Guirguillano Obs. in Spain, 1 in MPEC 2018-M02 -- 68347
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 4 in MPECs 2018-M05, 2018-M13, 2018-M21 & 2018-M26 -- 2018 LX5, 2018 LW5, 2018 LO5, 2018 LF5
W19Kalamazoo Obs. in Michigan, 1 in MPEC 2018-M02 -- 66391
K38M57 Obs. in Italy, 1 in MPEC 2018-M13 -- 2018 LO5
568^R. Wainscoat on Mauna Kea in Hawaii, 10 in MPECs 2018-M07, 2018-M09, 2018-M12, 2018-M14, 2018-M16, 2018-M17, 2018-M18, 2018-M22, 2018-M23 & 2018-M24 -- 2018 LZ5, 2018 LY5, 2018 LT5, 2018 LS5, 2018 LR5, 2018 LP5, 2018 LN5, 2018 LK5, 2018 LH5, 2018 LA6
Z71MPC code Z71, 1 in MPEC 2018-M02 -- 1627
474Mt. John Obs. in New Zealand, 2 in MPECs 2018-M15 & 2018-M16 -- 2018 LR5, 2018 LQ5
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2018-M20 & 2018-M26 -- 2018 LW5, 2018 LV5
J69North Obs. in England, 1 in MPEC 2018-M13 -- 2018 LO5
G34Oberfrauendorf Obs. in Germany, 2 in MPEC 2018-M02 -- 66391, 719
I41Palomar Transient Factory (PTF) in southern California, 4 in MPECs 2018-M02 & 2018-M05 -- 2018 LF5, 2013 QH10, 68350, 516420
F51Pan-STARRS 1 (PS1) in Hawaii, 40 in MPECs 2018-M02, 2018-M03, 2018-M04, 2018-M05, 2018-M06, 2018-M07, 2018-M08, 2018-M09, 2018-M10, 2018-M11, 2018-M12, 2018-M13, 2018-M14, 2018-M15, 2018-M16, 2018-M17, 2018-M18, 2018-M19, 2018-M21, 2018-M22, 2018-M23, 2018-M24 & 2018-M25 -- 2018 MA, 2018 LZ5, 2018 LY5, 2018 LX5, 2018 LU5, 2018 LU3, 2018 LT5, 2018 LS5, 2018 LR5, 2018 LQ5, 2018 LP5, 2018 LO5, 2018 LN5, 2018 LM5, 2018 LL5, 2018 LK5, 2018 LJ5, 2018 LH5, 2018 LG5, 2018 LF5, 2018 LA6, 2017 VL15, 2015 PM, 2015 MR101, 2014 UF176, 2013 BH18, 2005 EZ29, 1999 RB32, 99799, 518635, 505657, 445267, 395143, 288807, 27346, 253062, 180186, 159635, 7025, 1866
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2018-M02, 2018-M13 & 2018-M21 -- 2018 LX5, 2018 LO5, 302591, 719
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2018-M05, 2018-M13, 2018-M21 & 2018-M26 -- 2018 LX5, 2018 LW5, 2018 LO5, 2018 LF5
H36Sandlot Obs. in Kansas, 4 in MPECs 2018-M05, 2018-M06, 2018-M13 & 2018-M26 -- 2018 LW5, 2018 LO5, 2018 LG5, 2018 LF5
204Schiaparelli Obs. in Italy, 11 in MPECs 2018-M02, 2018-M05, 2018-M06 & 2018-M13 -- 2018 LO5, 2018 LG5, 2018 LF5, 2018 KP2, 2018 KN2, 2018 JV2, 2018 JQ1, 2018 JM1, 2018 JK3, 2018 JC, 2016 HP6
587Sormano Obs. in Italy, 3 in MPECs 2018-M05, 2018-M06 & 2018-M13 -- 2018 LO5, 2018 LG5, 2018 LF5
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2018-M17 -- 2018 LS5
291Spacewatch 1.8m telescope in Arizona, 3 in MPECs 2018-M02, 2018-M15 & 2018-M16 -- 2018 LR5, 2018 LQ5, 2018 LM2
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2018-M02 -- 153957
I52Steward Obs. Mt. Lemmon Station in Arizona, 6 in MPECs 2018-M05, 2018-M06, 2018-M13, 2018-M14, 2018-M20 & 2018-M26 -- 2018 LW5, 2018 LV5, 2018 LP5, 2018 LO5, 2018 LG5, 2018 LF5
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 4 in MPEC 2018-M02 -- 2018 LV2, 2018 LR3, 2018 LR2, 2018 LM
K41Vegaquattro Obs. in Italy, 1 in MPEC 2018-M13 -- 2018 LO5
L01Visnjan Obs., 6 in MPECs 2018-M02, 2018-M05, 2018-M06, 2018-M21, 2018-M23 & 2018-M26 -- 2018 LZ5, 2018 LX5, 2018 LW5, 2018 LN4, 2018 LG5, 2018 LF5
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2018-M02 -- 68347, 467309
E08Wobblesock Obs. in New South Wales, 1 in MPEC 2018-M13 -- 2018 LO5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 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 LT5JPL Sentry19002025-2083161.0347837e-06-5.63-6.030JPL: Computed at 11:30 today Pacific time based on 9 observations spanning 2.7871 days (2018-Jun-14.39564 to 2018-Jun-17.18274). Diameter approximately 0.033 km. from weighted mean H=25.03.
2018 LR3NEODyS19342076-2111135.26e-06-6.29-6.540NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2018-06-10.326 to 2018-06-15.264."
JPL Sentry15022077-211748.5358e-06-6.02-6.120JPL: Computed at 07:24 today Pacific time based on 28 observations spanning 4.9383 days (2018-Jun-10.32538 to 2018-Jun-15.263669). Diameter approximately 0.018 km. from weighted mean H=26.33.
2018 LMNEODyS19342112-211638.54e-07-6.67-6.960NEODyS: "Based on 85 optical observations (of which 0 are rejected as outliers) from 2018-06-04.255 to 2018-06-15.259."
JPL Sentry15022112-211212.597e-07-7.16-7.160JPL: Computed at 07:22 today Pacific time based on 85 observations spanning 11.004 days (2018-Jun-04.25437 to 2018-Jun-15.257894). Diameter approximately 0.031 km. from weighted mean H=25.20.

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 17 June '18

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

2020Generated Traffic Report
1934Noted that NEODyS has updated its 2018 LM risk assessment - see above
Noted that NEODyS has updated its 2018 LR3 risk assessment - see above
1900Noted that JPL Sentry has posted 2018 LT5 as an impact risk - see above
Grabbed MPEC 2018-M26 - 2018 LW5 - see above
1837Grabbed MPEC 2018-M20 - 2018 LV5 - see above
Grabbed MPEC 2018-M21 - 2018 LX5 - see above
Grabbed MPEC 2018-M22 - 2018 LY5 - see above
Grabbed MPEC 2018-M23 - 2018 LZ5 - see above
Grabbed MPEC 2018-M24 - 2018 LA6 - see above
Grabbed MPEC 2018-M25 - 2018 MA - see above
1800Grabbed MPEC 2018-M13 - 2018 LO5 - see above
Grabbed MPEC 2018-M14 - 2018 LP5 - see above
Grabbed MPEC 2018-M15 - 2018 LQ5 - see above
Grabbed MPEC 2018-M16 - 2018 LR5 - see above
Grabbed MPEC 2018-M17 - 2018 LS5 - see above
Grabbed MPEC 2018-M18 - 2018 LT5 - see above
Grabbed MPEC 2018-M19 - 2018 LU5 - see above
1614Grabbed MPEC 2018-M10 - 2018 LL5 - see above
Grabbed MPEC 2018-M11 - 2018 LM5 - see above
Grabbed MPEC 2018-M12 - 2018 LN5 - see above
1530Grabbed MPEC 2018-M05 - 2018 LF5 - see above
Grabbed MPEC 2018-M06 - 2018 LG5 - see above
Grabbed MPEC 2018-M07 - 2018 LH5 - see above
Grabbed MPEC 2018-M08 - 2018 LJ5 - see above
Grabbed MPEC 2018-M09 - 2018 LK5 - see above
1502Noted 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-M02 - Daily Orbit Update - see above
Grabbed MPEC 2018-M03 - 1999 RB32 - see above
Grabbed MPEC 2018-M04 - 2014 UF176 - see above