Contents  on 19 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 19 May '18

Nine objects reported inside ten LD

There are nine planetesimals known to be inside ten lunar distances (LD) of our planet today. Nearest is newly announced 2018 KS, which moves in from 5.81 to 4.25 LD, while risk-listed 2018 JG1 is inbound from 5.63 to 5.29 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
0.53 LD May 15 2010 WC9 68 m  8.79 to 11.64 LD May 12 - 19 intruder, exits ten LD - DOU
2.05 LD May 22 2018 KS 9 m  4.25 from 5.81 LD May 16 - 27 NEW - MPEC
2.16 LD May 13 2016 HP6 27 m  7.74 to 8.93 LD May 5 - 20 NHATS target
3.88 LD May 16 2018 JX 71 m  8.78 to 11.47 LD May 13 - 19 exits ten LD - DOU
4.43 LD May 13 2018 JA1 24 m  8.21 to 9.32 LD May 6 - 20 NHATS target
5.29 LD tomorrow 2018 JG1 43 m  5.29 from 5.63 LD May 15 - 24 risk - DOU
7.43 LD May 14 2018 JL1 15 m  9.58 to 10.43 LD May 8 - 19 NHATS target, exits ten LD, risk
7.56 LD May 16 2018 KU 18 m  8.71 to 9.71 LD May 12 - 20 NEW - MPEC
8.70 LD today 2018 KQ 11 m  8.70 LD May 17 - 22 NEW, Earth closest at 2303 UTC - MPEC

This report was updated at 2240 UTC with the discoveries of three objects marked "NEW" in the above traffic table. Your first neighborhood flying rock traffic report was generated at 1918 UTC with follow-up in today's DOU MPEC for five objects in the active traffic tables here and for departed objects 1999 FN19 and risk-listed 2018 JN, plus astrometry from April for 2018 GS3.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
9.50 LD May 29 68347 2001 KB67 371 m  29.07 from 31.97 LD May 28 - 30 radar target
5.56 LD June 10 2018 EJ4 186 m  30.45 from 31.76 LD June 4 - 16 radar/NHATS target - DOU
8.96 LD June 11 2015 DP155 162 m  23.09 from 23.92 LD June 6 - 15 NHATS target - 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. 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 19 May '18

The MPC's NEO Confirmation Page has 32 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 32 objects listed. Of these, seventeen were "one nighters." So far The Tracking News has counted a total of 56 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 19 May '18

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 24 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-K38 - "19:54 UT" - 2018 KN


MPEC 2018-K37 - "19:50 UT" - 2018 KU


MPEC 2018-K36 - "19:46 UT" - 2018 KT


MPEC 2018-K35 - "19:42 UT" - 2018 KS


MPEC 2018-K34 - "19:37 UT" - 2018 KR


MPEC 2018-K33 - "19:33 UT" - 2018 KQ


MPEC 2018-K32 - "19:29 UT" - 2018 KP


MPEC 2018-K31 - "19:24 UT" - 2018 KO


MPEC 2018-K30 - "19:20 UT" - 2018 KM


MPEC 2018-K29 - "18:41 UT" - 2018 KJ


MPEC 2018-K28 - "18:37 UT" - 2018 KL


MPEC 2018-K27 - "18:34 UT" - 2018 KK


MPEC 2018-K26 - "18:30 UT" - 2018 KH


MPEC 2018-K25 - "18:26 UT" - 2018 JE5


MPEC 2018-K24 - "18:22 UT" - 2018 JD5


MPEC 2018-K23 - "18:18 UT" - 2018 JC5


MPEC 2018-K22 - "15:09 UT" - 2015 WO2


<< DOU on 19 May '18 >>  MPEC 2018-K21 - "12:06 UT" - Daily Orbit Update


MPEC 2018-K20 - "11:39 UT" - 2017 SX11


MPEC 2018-K19 - "11:37 UT" - 2015 PR


MPEC 2018-K18 - "11:36 UT" - 2015 HR11


MPEC 2018-K17 - "02:55 UT" - 2015 VA65


MPEC 2018-K16 - "02:53 UT" - 2015 KK122


MPEC 2018-K15 - "02:52 UT" - 2005 OW

Observers  on 19 May '18

A total of 37 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 6 in MPECs 2018-K25, 2018-K27, 2018-K28, 2018-K36, 2018-K37 & 2018-K38 -- 2018 KU, 2018 KT, 2018 KN, 2018 KL, 2018 KK, 2018 JE5
H21Astronomical Research Obs. Westfield in Illinois, 13 in MPEC 2018-K21 -- 2018 JE2, 2018 GM4, 2018 GL, 2018 GA4, 2018 CX13, 2017 VO15, 2017 SB14, 2006 EE1, 514571, 504928, 497113, 363024, 331509
T05ATLAS Haleakala in Hawaii, 10 in MPECs 2018-K21 & 2018-K25 -- 2018 JE5, 2018 JA, 2018 GA5, 2018 EJ4, 2015 DP155, 85989, 138847, 9856, 3752, 1866
T08ATLAS Mauna Loa in Hawaii, 6 in MPECs 2018-K21 & 2018-K25 -- 2018 JE5, 467309, 455550, 25916, 13553, 719
K46Bamberg Obs. in Germany, 1 in MPEC 2018-K21 -- 1627
160Castelmartini Obs. in Italy, 12 in MPECs 2018-K21 & 2018-K27 -- 2018 KK, 85628, 68950, 450648, 37336, 25916, 16834, 15745, 139289, 7889, 1627, 719
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2018-K21, 2018-K27 & 2018-K28 -- 2018 KL, 2018 KK, 2018 JA, 2018 GT1, 2018 FS3, 2018 EJ4, 2017 WH14, 85989, 337228, 152931, 6455, 3752, 1866
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 13 in MPECs 2018-K15, 2018-K17, 2018-K19, 2018-K20, 2018-K21, 2018-K23, 2018-K26, 2018-K27, 2018-K28, 2018-K30, 2018-K34 & 2018-K35 -- 2018 KS, 2018 KR, 2018 KM, 2018 KL, 2018 KK, 2018 KH, 2018 JC5, 2017 SX11, 2015 VA65, 2015 PR, 2015 KK122, 2010 OA, 2005 OW
K87Dettelbach Vineyard Obs. in Germany, 3 in MPECs 2018-K25, 2018-K27 & 2018-K38 -- 2018 KN, 2018 KK, 2018 JE5
G37Discovery Channel Telescope in Arizona, 1 in MPEC 2018-K21 -- 2018 AB12
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2018-K22 -- 2015 WO2
595Farra d'Isonzo Obs. in Italy, 5 in MPECs 2018-K21, 2018-K25, 2018-K27, 2018-K36 & 2018-K38 -- 2018 KT, 2018 KN, 2018 KK, 2018 JE5, 2018 JB3
J77Golden Hill Obs. in England, 1 in MPEC 2018-K27 -- 2018 KK
J95Great Shefford Obs. in England, 8 in MPECs 2018-K23, 2018-K26, 2018-K27, 2018-K28, 2018-K31, 2018-K35, 2018-K37 & 2018-K38 -- 2018 KU, 2018 KS, 2018 KO, 2018 KN, 2018 KL, 2018 KK, 2018 KH, 2018 JC5
A17Guidestar Obs. in Germany, 1 in MPEC 2018-K27 -- 2018 KK
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-K21 -- 101955
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-K25 -- 2018 JE5
Z43Landehen Obs., 3 in MPEC 2018-K21 -- 2018 JX, 2010 WC9, 138847
H01Magdalena Ridge Obs. (MRO) in New Mexico, 13 in MPECs 2018-K21, 2018-K23, 2018-K25, 2018-K26, 2018-K27, 2018-K28, 2018-K30, 2018-K31, 2018-K33, 2018-K34, 2018-K35, 2018-K36 & 2018-K38 -- 2018 KT, 2018 KS, 2018 KR, 2018 KQ, 2018 KO, 2018 KN, 2018 KM, 2018 KL, 2018 KK, 2018 KH, 2018 JE5, 2018 JC5, 2011 HS60
474Mt. John Obs. in New Zealand, 13 in MPECs 2018-K21, 2018-K31 & 2018-K37 -- 2018 KU, 2018 KO, 2018 JX, 2018 JH3, 2018 JG1, 2018 JC, 2018 DJ4, 2018 AP12, 2017 YC8, 2017 CO32, 2016 NT22, 2015 DE200, 2009 SK104
G96Mt. Lemmon Survey (MLS) in Arizona, 28 in MPECs 2018-K21, 2018-K23, 2018-K24, 2018-K26, 2018-K29, 2018-K30, 2018-K31, 2018-K32, 2018-K33, 2018-K34, 2018-K35, 2018-K36, 2018-K37 & 2018-K38 -- 2018 KU, 2018 KT, 2018 KS, 2018 KR, 2018 KQ, 2018 KP, 2018 KO, 2018 KN, 2018 KM, 2018 KJ, 2018 KH, 2018 JH3, 2018 JD5, 2018 JC5, 2016 CX264, 2011 MV1, 2011 KR12, 2011 HS60, 2000 WK107, 89830, 88254, 68348, 507847, 288592, 242643, 164400, 5604, 3361
C23Olmen Obs. in Belgium, 1 in MPEC 2018-K21 -- 1627
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2018-K37 -- 2018 KU
K63Pascoli Obs. in Italy, 1 in MPEC 2018-K38 -- 2018 KN
H36Sandlot Obs. in Kansas, 3 in MPECs 2018-K25, 2018-K26 & 2018-K28 -- 2018 KL, 2018 KH, 2018 JE5
204Schiaparelli Obs. in Italy, 11 in MPEC 2018-K21 -- 2018 GS3, 2018 GR1, 2018 GL4, 2018 GJ2, 2018 GJ1, 2018 GG2, 2018 GF4, 2018 FV4, 513497, 508997, 497117
033Schwarzschild Obs. in Germany, 7 in MPECs 2018-K26, 2018-K27, 2018-K28, 2018-K31, 2018-K33, 2018-K35 & 2018-K38 -- 2018 KS, 2018 KQ, 2018 KO, 2018 KN, 2018 KL, 2018 KK, 2018 KH
Y28Sertao de Itaparica Obs. in Brazil, 1 in MPEC 2018-K22 -- 2015 WO2
G40!M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-K21 -- 2018 EJ4
G40(program code "(" (17) via Slooh.com Canary Islands Obs. in the Canary Islands, 4 in MPECs 2018-K25, 2018-K27, 2018-K35 & 2018-K36 -- 2018 KT, 2018 KS, 2018 KK, 2018 JE5
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-K25 -- 2018 JE5
691Spacewatch 0.9m telescope in Arizona, 17 in MPECs 2018-K21, 2018-K25 & 2018-K35 -- 2018 KS, 2018 JS1, 2018 JO1, 2018 JE5, 2018 JC2, 2018 JA3, 2018 GL1, 2018 GJ1, 2018 GF4, 2018 EQ4, 2018 CZ13, 2016 CX264, 2015 SF20, 2013 EP41, 2009 VT, 2008 QD1, 1999 FN19
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2018-K21 -- 2018 JN, 2018 HJ2, 2018 HA1, 2018 FY, 2018 EE, 2018 CA, 2017 BD29
I52Steward Obs. Mt. Lemmon Station in Arizona, 17 in MPECs 2018-K21, 2018-K23, 2018-K24, 2018-K25, 2018-K26, 2018-K27, 2018-K28, 2018-K29, 2018-K30, 2018-K31, 2018-K32, 2018-K33, 2018-K34, 2018-K35, 2018-K36, 2018-K37 & 2018-K38 -- 2018 KU, 2018 KT, 2018 KS, 2018 KR, 2018 KQ, 2018 KP, 2018 KO, 2018 KN, 2018 KM, 2018 KL, 2018 KK, 2018 KJ, 2018 KH, 2018 JE5, 2018 JD5, 2018 JC5, 2011 HS60
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 2 in MPECs 2018-K25 & 2018-K28 -- 2018 KL, 2018 JE5
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2018-K16 & 2018-K18 -- 2015 KK122, 2015 HR11
K41Vegaquattro Obs. in Italy, 2 in MPECs 2018-K25 & 2018-K27 -- 2018 KK, 2018 JE5
L01Visnjan Obs., 12 in MPECs 2018-K23, 2018-K25, 2018-K26, 2018-K27, 2018-K28, 2018-K29, 2018-K31, 2018-K32, 2018-K34, 2018-K35, 2018-K36 & 2018-K38 -- 2018 KT, 2018 KS, 2018 KR, 2018 KP, 2018 KO, 2018 KN, 2018 KL, 2018 KK, 2018 KJ, 2018 KH, 2018 JE5, 2018 JC5
E08Wobblesock Obs. in New South Wales, 2 in MPECs 2018-K25 & 2018-K27 -- 2018 KK, 2018 JE5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 19 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 JD5JPL Sentry19382075-207515.374e-09-5.36-5.360JPL: Computed at 12:25 today Pacific time based on 18 observations spanning 2.9971 days (2018-May-15.44733 to 2018-May-18.44438). Diameter approximately 0.580 km. from weighted mean H=18.83.
NEODyS19382075-211124.54e-09-5.69-5.760NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2018-05-15.448 to 2018-05-18.445."
2018 JC2NEODyS1938205011.04e-10-8.71-8.710NEODyS #2 for the day: "Based on 65 optical observations (of which 0 are rejected as outliers) from 2018-05-09.321 to 2018-05-19.271."
JPL Sentry16002050-205017.437e-08-5.92-5.920JPL: Computed at 07:39 today Pacific time based on 65 observations spanning 9.9493 days (2018-May-09.32052 to 2018-May-19.2698). Diameter approximately 0.096 km. from weighted mean H=22.74.
2018 JL1NEODyS16002112-211874.13e-06-6.68-7.13n/aNEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2018-05-08.265 to 2018-05-16.243."
2018 JG1NEODyS1938211822.66e-06-5.74-5.78n/aNEODyS: "Based on 75 optical observations (of which 0 are rejected as outliers) from 2018-05-08.180 to 2018-05-18.421."
JPL Sentry16002118-211811.105e-06-6.11-6.110JPL: Computed at 07:28 today Pacific time based on 75 observations spanning 10.240 days (2018-May-08.17968 to 2018-May-18.419992). Diameter approximately 0.043 km. from weighted mean H=24.51.
2018 JNNEODyS19382088-211253.2e-06-5.87-5.90NEODyS #2 for the day: "Based on 121 optical observations (of which 1 are rejected as outliers) from 2018-05-05.424 to 2018-05-19.353."
JPL Sentry16002100-210425.153542e-07-6.65-6.650JPL: Computed at 07:41 today Pacific time based on 121 observations spanning 13.929 days (2018-May-05.42349 to 2018-May-19.35214). Diameter approximately 0.033 km. from weighted mean H=25.04.
2018 HJ2NEODyS19382085-211449.16e-04-3.03-3.340NEODyS #2 for the day: "Based on 97 optical observations (of which 0 are rejected as outliers) from 2018-04-23.412 to 2018-05-19.334."
JPL Sentry16002085-208519.812e-04-2.97-2.970JPL: Computed at 07:26 today Pacific time based on 97 observations spanning 25.923 days (2018-Apr-23.41101 to 2018-May-19.33361). Diameter approximately 0.044 km. from weighted mean H=24.45.
2018 EZ2NEODyS16002055-2118152.98e-05-5.25-5.3n/aNEODyS: "Based on 89 optical observations (of which 0 are rejected as outliers) from 2018-03-12.422 to 2018-05-17.372."

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 19 May '18

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

2240Updated Traffic Report
2002Grabbed MPEC 2018-K34 - 2018 KR - see above
Grabbed MPEC 2018-K35 - 2018 KS - see above
Grabbed MPEC 2018-K36 - 2018 KT - see above
Grabbed MPEC 2018-K37 - 2018 KU - see above
Grabbed MPEC 2018-K38 - 2018 KN - see above
1938Noted that NEODyS has updated its 2018 HJ2 risk assessment - see above
Noted that NEODyS has updated its 2018 JC2 risk assessment - see above
Noted that JPL Sentry has posted 2018 JD5 as an impact risk - see above
Noted that NEODyS has posted 2018 JD5 as an impact risk - see above
Noted that NEODyS has updated its 2018 JG1 risk assessment - see above
Noted that NEODyS has updated its 2018 JN risk assessment - see above
Grabbed MPEC 2018-K30 - 2018 KM - see above
Grabbed MPEC 2018-K31 - 2018 KO - see above
Grabbed MPEC 2018-K32 - 2018 KP - see above
Grabbed MPEC 2018-K33 - 2018 KQ - see above
1912Grabbed MPEC 2018-K23 - 2018 JC5 - see above
Grabbed MPEC 2018-K24 - 2018 JD5 - see above
Grabbed MPEC 2018-K25 - 2018 JE5 - see above
Grabbed MPEC 2018-K26 - 2018 KH - see above
Grabbed MPEC 2018-K27 - 2018 KK - see above
Grabbed MPEC 2018-K28 - 2018 KL - see above
Grabbed MPEC 2018-K29 - 2018 KJ - see above
1600Noted that NEODyS has updated its 2018 EZ2 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 JC2 risk assessment - see above
Noted that NEODyS has updated its 2018 JC2 risk assessment - see above
Noted that JPL Sentry has updated its 2018 JG1 risk assessment - see above
Noted that NEODyS has updated its 2018 JL1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 JN risk assessment - see above
Noted that NEODyS has updated its 2018 JN risk assessment - see above
Grabbed MPEC 2018-K18 - 2015 HR11 - see above
Grabbed MPEC 2018-K19 - 2015 PR - see above
Grabbed MPEC 2018-K20 - 2017 SX11 - see above
Grabbed MPEC 2018-K21 - Daily Orbit Update - see above
Grabbed MPEC 2018-K22 - 2015 WO2 - see above
0300Grabbed MPEC 2018-K15 - 2005 OW - see above
Grabbed MPEC 2018-K16 - 2015 KK122 - see above
Grabbed MPEC 2018-K17 - 2015 VA65 - see above