Contents  on 12 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 12 May '18

Eight objects reported inside ten LD

Eight minor objects are known to be less than ten lunar distances (LD) from Earth today. Nearest is 2016 HP6, which enters our planet's sphere of gravitational influence as it moves in from 2.53 to 2.16 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  8.34 from 11.19 LD today - May 19 intruder, enters ten LD - DOU
2.08 LD May 9 2018 JP 11 m  4.56 to 6.07 LD May 3 - 15 NHATS target
2.16 LD tomorrow 2016 HP6 27 m  2.16 from 2.53 LD May 5 - 20 NHATS target, enters Earth SOI - DOU
4.33 LD yesterday 2018 JZ 13 m  4.70 to 6.48 LD May 8 - 14
4.43 LD tomorrow 2018 JA1 27 m  4.51 from 4.94 LD May 6 - 20 NHATS target - DOU
6.48 LD May 9 388945 2008 TZ3 282 m  8.32 to 9.71 LD May 5 - 13 DOU
7.43 LD May 14 2018 JL1 16 m  7.59 from 7.94 LD May 8 - 19 NHATS target, risk - DOU
8.78 LD May 14 2018 JY 50 m  9.64 from 10.85 LD today - May 16 enters ten LD

This report was generated at 1941 UTC with the discoveries of approaching 2018 JX1 (MPEC) and two already departed objects: 2018 JM2 (MPEC) flew past us at 7.80 LD on May 6th and 2018 JK2 (MPEC) went by at 9.43 LD on the 9th. Today's DOU MPEC has first follow-up for inbound risk-listed 2018 JL1 and continuing follow-up for approaching objects 2018 JX and risk-listed 2018 JG1, inbound objects 2018 JA1, 2016 HP6, and risk-listed 2010 WC9, outbound 388945 2008 TZ3, and departed objcts 2018 JM and risk-listed 2018 JN, plus astrometry from April for departed risk-listed intruder 2018 HW1.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
3.88 LD May 16 2018 JX 73 m  10.39 from 13.15 LD tomorrow - May 19 DOU
9.32 LD May 15 2018 JX1 18 m  10.21 from 11.04 LD tomorrow - May 17 NEW - MPEC
5.29 LD May 20 2018 JG1 41 m  14.06 from 15.78 LD May 15 - 24 risk - DOU
9.50 LD May 29 68347 2001 KB67 371 m  50.01 from 53.11 LD May 28 - 30 radar target
5.56 LD June 10 2018 EJ4 186 m  39.57 from 40.86 LD June 4 - 16 radar/NHATS target
8.96 LD June 11 2015 DP155 162 m  28.86 from 29.67 LD June 6 - 15 NHATS target



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 12 May '18

The MPC's NEO Confirmation Page has 18 listings

When last checked at 2236 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eighteen objects listed. Of these, fourteen were "one nighters." So far The Tracking News has counted a total of 39 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 '18

Minor Planet Electronic Circulars

As of last check at 2236 UTC, there have been seventeen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-J74 - "15:52 UT" - 2018 JM2


MPEC 2018-J73 - "15:49 UT" - 2018 JL2


MPEC 2018-J72 - "15:46 UT" - 2018 JK2


MPEC 2018-J71 - "15:43 UT" - 2018 JJ2


MPEC 2018-J70 - "15:39 UT" - 2018 JH2


MPEC 2018-J69 - "15:36 UT" - 2018 JG2


MPEC 2018-J68 - "15:32 UT" - 2018 JF2


MPEC 2018-J67 - "15:29 UT" - 2018 JE2


MPEC 2018-J66 - "15:25 UT" - 2018 JC2


MPEC 2018-J65 - "15:21 UT" - 2018 JD2


MPEC 2018-J64 - "15:14 UT" - 2018 JB2


MPEC 2018-J63 - "15:05 UT" - 2018 JA2


MPEC 2018-J62 - "15:00 UT" - 2018 JZ1


MPEC 2018-J61 - "14:56 UT" - 2018 JY1


MPEC 2018-J60 - "14:52 UT" - 2018 JX1


MPEC 2018-J59 - "14:48 UT" - 2018 JW1


<< DOU on 12 May '18 >>  MPEC 2018-J58 - "12:05 UT" - Daily Orbit Update

Observers  on 12 May '18

A total of 36 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2018-J68 -- 2018 JF2
H21Astronomical Research Obs. Westfield in Illinois, 12 in MPECs 2018-J58, 2018-J59 & 2018-J64 -- 2018 JW1, 2018 JB2, 2018 HO1, 2018 GA2, 2018 FD3, 2018 EW3, 2018 EE4, 2018 BN3, 2017 YP4, 2007 BB50, 509569, 331509
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2018-J68 -- 2018 JF2
T08ATLAS Mauna Loa in Hawaii, 6 in MPECs 2018-J58 & 2018-J68 -- 2018 JX, 2018 JF2, 2010 WC9, 450648, 15745, 1627
160Castelmartini Obs. in Italy, 14 in MPECs 2018-J58, 2018-J68 & 2018-J72 -- 2018 JK2, 2018 JF2, 2018 FQ5, 2018 BY2, 85628, 66251, 475967, 388945, 36183, 337084, 25916, 194126, 9856, 1627
703Catalina Sky Survey (CSS) in Arizona, 18 in MPECs 2018-J58, 2018-J61 & 2018-J68 -- 2018 JY1, 2018 JF2, 2018 JC, 2018 JA1, 2018 HV2, 2018 DB2, 2018 BY2, 2016 HP6, 2012 FN62, 516803, 508767, 475967, 450648, 374851, 337084, 6569, 6053, 1627
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 5 in MPEC 2018-J58 -- 2018 GZ4, 2018 GY4, 2018 GX3, 2018 FP3, 2018 BO3
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2018-J58 & 2018-J68 -- 2018 JF2, 2005 LH8
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 15 in MPECs 2018-J58, 2018-J64, 2018-J65, 2018-J69, 2018-J70, 2018-J71, 2018-J72, 2018-J73 & 2018-J74 -- 2018 JN, 2018 JM2, 2018 JL2, 2018 JL1, 2018 JK2, 2018 JJ2, 2018 JH2, 2018 JG2, 2018 JG1, 2018 JF1, 2018 JD2, 2018 JB2, 2013 JY35, 100004, 5626
595Farra d'Isonzo Obs. in Italy, 4 in MPECs 2018-J68, 2018-J69, 2018-J72 & 2018-J73 -- 2018 JL2, 2018 JK2, 2018 JG2, 2018 JF2
372Geisei Obs. in Japan, 1 in MPEC 2018-J68 -- 2018 JF2
K73Gravina Obs. in Italy, 2 in MPEC 2018-J58 -- 220839, 164121
J95Great Shefford Obs. in England, 5 in MPECs 2018-J60, 2018-J63, 2018-J68, 2018-J72 & 2018-J73 -- 2018 JX1, 2018 JL2, 2018 JK2, 2018 JF2, 2018 JA2
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-J58 -- 2018 HW1
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-J68 -- 2018 JF2
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 8 in MPECs 2018-J60, 2018-J61, 2018-J63, 2018-J65, 2018-J68, 2018-J69, 2018-J71 & 2018-J74 -- 2018 JY1, 2018 JX1, 2018 JM2, 2018 JJ2, 2018 JG2, 2018 JF2, 2018 JD2, 2018 JA2
W19Kalamazoo Obs. in Michigan, 1 in MPEC 2018-J58 -- 450648
K85Kelmis Obs., 1 in MPEC 2018-J58 -- 444193
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2018-J59, 2018-J62, 2018-J64, 2018-J69 & 2018-J71 -- 2018 JZ1, 2018 JW1, 2018 JJ2, 2018 JG2, 2018 JB2
711McDonald Obs. in Texas, 8 in MPECs 2018-J59, 2018-J61, 2018-J64, 2018-J65, 2018-J68, 2018-J69, 2018-J71 & 2018-J74 -- 2018 JY1, 2018 JW1, 2018 JM2, 2018 JJ2, 2018 JG2, 2018 JF2, 2018 JD2, 2018 JB2
474Mt. John Obs. in New Zealand, 1 in MPEC 2018-J68 -- 2018 JF2
G96Mt. Lemmon Survey (MLS) in Arizona, 17 in MPECs 2018-J58, 2018-J60, 2018-J61, 2018-J62, 2018-J63, 2018-J64, 2018-J65, 2018-J66, 2018-J67, 2018-J69, 2018-J70, 2018-J71, 2018-J72, 2018-J73 & 2018-J74 -- 2018 JZ1, 2018 JY1, 2018 JX1, 2018 JM2, 2018 JL2, 2018 JK2, 2018 JJ2, 2018 JH2, 2018 JG2, 2018 JE2, 2018 JD2, 2018 JC2, 2018 JB2, 2018 JA2, 2002 ON4, 53435, 475967
C47Nonndorf Obs. in Austria, 2 in MPECs 2018-J65 & 2018-J72 -- 2018 JK2, 2018 JD2
Z80Northolt Branch Obs. in England, 4 in MPEC 2018-J58 -- 2018 JX, 2018 HV2, 2016 HP6, 2010 WC9
104San Marcello Pistoiese Obs. in Italy, 6 in MPECs 2018-J63, 2018-J68, 2018-J69, 2018-J72, 2018-J73 & 2018-J74 -- 2018 JM2, 2018 JL2, 2018 JK2, 2018 JG2, 2018 JF2, 2018 JA2
204Schiaparelli Obs. in Italy, 3 in MPECs 2018-J63, 2018-J68 & 2018-J69 -- 2018 JG2, 2018 JF2, 2018 JA2
033Schwarzschild Obs. in Germany, 3 in MPECs 2018-J61, 2018-J62 & 2018-J66 -- 2018 JZ1, 2018 JY1, 2018 JC2
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-J58 -- 2009 SK104
Y00SONEAR in Brazil, 3 in MPECs 2018-J58 & 2018-J68 -- 2018 JF2, 444193, 5646
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2018-J59 -- 2018 JW1
I52Steward Obs. Mt. Lemmon Station in Arizona, 36 in MPECs 2018-J58, 2018-J60, 2018-J61, 2018-J62, 2018-J63, 2018-J64, 2018-J65, 2018-J66, 2018-J67, 2018-J68, 2018-J69, 2018-J70, 2018-J71, 2018-J72, 2018-J73 & 2018-J74 -- 2018 JZ1, 2018 JY1, 2018 JX1, 2018 JQ1, 2018 JP1, 2018 JO1, 2018 JO, 2018 JM2, 2018 JM1, 2018 JM, 2018 JL2, 2018 JL1, 2018 JK2, 2018 JK, 2018 JJ2, 2018 JH2, 2018 JG2, 2018 JG1, 2018 JF2, 2018 JF1, 2018 JF, 2018 JE2, 2018 JE1, 2018 JE, 2018 JD2, 2018 JC2, 2018 JC, 2018 JB2, 2018 JA2, 2018 JA1, 2018 JA, 2018 HQ1, 2018 HL2, 2018 GJ1, 2018 FL3, 2018 EQ4
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 3 in MPECs 2018-J65, 2018-J66 & 2018-J71 -- 2018 JJ2, 2018 JD2, 2018 JC2
Z52The Studios Obs., 1 in MPEC 2018-J58 -- 138847
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 4 in MPEC 2018-J58 -- 2018 GX3, 2018 GP5, 2018 GK1, 2018 GD3
L01Visnjan Obs., 12 in MPECs 2018-J61, 2018-J62, 2018-J63, 2018-J65, 2018-J66, 2018-J67, 2018-J68, 2018-J69, 2018-J70, 2018-J72, 2018-J73 & 2018-J74 -- 2018 JZ1, 2018 JY1, 2018 JM2, 2018 JL2, 2018 JK2, 2018 JH2, 2018 JG2, 2018 JF2, 2018 JE2, 2018 JD2, 2018 JC2, 2018 JA2
C51WISE in Earth polar orbit, 1 in MPEC 2018-J59 -- 2018 JW1
E08Wobblesock Obs. in New South Wales, 1 in MPEC 2018-J68 -- 2018 JF2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 12 May '18

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2236 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 JC2JPL Sentry16322050-211452.469178e-07-5.33-5.330JPL: Computed at 09:27 today Pacific time based on 36 observations spanning 2.9155 days (2018-May-09.32052 to 2018-May-12.23604). Diameter approximately 0.100 km. from weighted mean H=22.58.
2018 JZ1JPL Sentry16322057-205712.317e-08-6.86-6.860JPL: Computed at 08:50 today Pacific time based on 31 observations spanning 2.8839 days (2018-May-09.27142 to 2018-May-12.15528). Diameter approximately 0.064 km. from weighted mean H=23.63.
2018 JL1NEODyS22362112-211843.93e-07-7.67-7.87-NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2018-05-08.265 to 2018-05-12.145."
JPL Sentry15502112-211423.4436e-07-7.71-7.840JPL: Computed at 08:37 today Pacific time based on 36 observations spanning 3.8804 days (2018-May-08.26382 to 2018-May-12.14419). Diameter approximately 0.016 km. from weighted mean H=26.67.
2018 JG1NEODyS22362085-211836.23e-07-6.40-6.61-NEODyS #2 for the day: "Based on 53 optical observations (of which 0 are rejected as outliers) from 2018-05-08.180 to 2018-05-12.239."
JPL Sentry15502103-210313.579e-09-8.57-8.570JPL: Computed at 08:33 today Pacific time based on 53 observations spanning 4.0585 days (2018-May-08.17968 to 2018-May-12.23821). Diameter approximately 0.041 km. from weighted mean H=24.58.
2018 JF1NEODyS22362068-211878.27e-08-5.90-6.0-NEODyS #2 for the day: "Based on 42 optical observations (of which 0 are rejected as outliers) from 2018-05-08.180 to 2018-05-12.293."
2018 JNNEODyS22362088-211249.36e-07-6.36-6.440NEODyS: "Based on 100 optical observations (of which 1 are rejected as outliers) from 2018-05-05.424 to 2018-05-11.976."
JPL Sentry15502100-210421.7522e-06-6.09-6.160JPL: Computed at 08:49 today Pacific time based on 100 observations spanning 6.5522 days (2018-May-05.42349 to 2018-May-11.97568). Diameter approximately 0.035 km. from weighted mean H=24.95.
2018 HJ2NEODyS1550208521.5e-04-3.75-3.820NEODyS: "Based on 87 optical observations (of which 0 are rejected as outliers) from 2018-04-23.412 to 2018-05-10.979."
2018 HW1NEODyS2236211821.23e-08-8.86-8.87-NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2018-04-23.203 to 2018-04-27.810."
JPL Sentry15502116-211841.690853e-05-5.63-5.650JPL: Computed at 08:37 today Pacific time based on 53 observations spanning 5.2795 days (2018-Apr-23.20248 to 2018-Apr-28.48196). Diameter approximately 0.024 km. from weighted mean H=25.76.
2018 GL2NEODyS15502060-209373.75e-07-6.03-6.290NEODyS: "Based on 70 optical observations (of which 0 are rejected as outliers) from 2018-04-11.236 to 2018-05-10.335."

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 '18

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

2236Noted that NEODyS has updated its 2018 HW1 risk assessment - see above
Noted that NEODyS has updated its 2018 JF1 risk assessment - see above
Noted that NEODyS has updated its 2018 JG1 risk assessment - see above
Noted that NEODyS has updated its 2018 JL1 risk assessment - see above
Noted that NEODyS has updated its 2018 JN risk assessment - see above
1941Generated Traffic Report
1632Noted that JPL Sentry has posted 2018 JC2 as an impact risk - see above
Noted that JPL Sentry has posted 2018 JZ1 as an impact risk - see above
Grabbed MPEC 2018-J73 - 2018 JL2 - see above
Grabbed MPEC 2018-J74 - 2018 JM2 - see above
1550Noted that NEODyS has updated its 2018 GL2 risk assessment - see above
Noted that NEODyS has updated its 2018 HJ2 risk assessment - see above
Noted that JPL Sentry has updated its 2018 HW1 risk assessment - see above
Noted that NEODyS has updated its 2018 JF1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 JG1 risk assessment - see above
Noted that NEODyS has updated its 2018 JG1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 JL1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 JN risk assessment - see above
Grabbed MPEC 2018-J58 - Daily Orbit Update - see above
Grabbed MPEC 2018-J59 - 2018 JW1 - see above
Grabbed MPEC 2018-J60 - 2018 JX1 - see above
Grabbed MPEC 2018-J61 - 2018 JY1 - see above
Grabbed MPEC 2018-J62 - 2018 JZ1 - see above
Grabbed MPEC 2018-J63 - 2018 JA2 - see above
Grabbed MPEC 2018-J64 - 2018 JB2 - see above
Grabbed MPEC 2018-J65 - 2018 JD2 - see above
Grabbed MPEC 2018-J66 - 2018 JC2 - see above
Grabbed MPEC 2018-J67 - 2018 JE2 - see above
Grabbed MPEC 2018-J68 - 2018 JF2 - see above
Grabbed MPEC 2018-J69 - 2018 JG2 - see above
Grabbed MPEC 2018-J70 - 2018 JH2 - see above
Grabbed MPEC 2018-J71 - 2018 JJ2 - see above
Grabbed MPEC 2018-J72 - 2018 JK2 - see above