Contents  on 8 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 8 May '18

Seven objects reported inside ten LD

There are seven asteroids reported less than ten lunar distances (LD) from our planet today. Nearest is newly announced 2018 JP, which enters Earth's sphere of gravitational influence, coming in from 3.29 to 2.26 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 tomorrow 2018 JP 12 m  2.26 from 3.29 LD May 3 - 15 NEW, enters Earth SOI - MPEC
2.16 LD May 13 2016 HP6 27 m  5.51 from 6.68 LD May 5 - 20 NHATS target - DOU
3.49 LD May 6 2018 JD 16 m  4.45 to 5.76 LD May 1 - 11 risk
5.20 LD May 6 2018 JB 22 m  5.54 to 6.43 LD May 2 - 11
6.2   LD today* 2016 JQ5 8 m  6.2 LD May 4 - 11 Earth closest at 0416 UTC +/- 14.00 hours*
6.48 LD tomorrow 388945 2008 TZ3 282 m  6.53 from 7.09 LD May 5 - 13 DOU
9.65 LD yesterday 1999 FN19 112 m  9.67 to 9.82 LD May 5 - 9 radar/NHATS target

This report was generated at 1844 UTC with the discovery of 2018 JP (MPEC) and with two discoveries announced late yesterday, both already departed after passing the Earth on April 30th -- 2018 JM (MPEC, DOU) at 6.54 LD and risk-listed 2018 JN (MPEC, DOU) at 4.47 LD. Today's DOU MPEC has follow-up for approaching 2015 DP155, inbound objects 2016 HP6 and 388945 2008 TZ3, departed objects 2018 HM2 and 2018 GE, and distant 2002 JR100.

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  62.56 from 65.77 LD May 28 - 30 radar target
5.56 LD June 10 2018 EJ4 186 m  44.71 from 45.98 LD June 4 - 16 radar/NHATS target
8.96 LD June 11 2015 DP155 162 m  32.07 from 32.86 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. "Distant" is used here to describe an object that has come within ten LD since A/CC began these traffic reports (2007) but is not presently so close. Object temporal distances are derived by A/CC from JPL Horizons data. (*) 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 8 May '18

The MPC's NEO Confirmation Page has 33 listings

When last checked at 2332 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 33 objects listed. Of these, 20 were "one nighters." So far The Tracking News has counted a total of 44 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 8 May '18

Minor Planet Electronic Circulars

As of last check at 2332 UTC, there have been four MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-J27 - "19:38 UT" - 2017 MT8


<< DOU on 8 May '18 >>  MPEC 2018-J26 - "12:04 UT" - Daily Orbit Update


MPEC 2018-J25 - "11:05 UT" - 2018 JP


MPEC 2018-J24 - "10:58 UT" - 2018 JO

Observers  on 8 May '18

A total of 32 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2018-J26 & 2018-J27 -- 2018 HG2, 2018 GB4, 2018 FY, 2017 SR32, 2017 MT8, 2017 AV3, 66253, 331509
T05ATLAS Haleakala in Hawaii, 11 in MPEC 2018-J26 -- 2018 HM2, 2018 HH2, 2018 FQ5, 2013 US3, 2009 SK104, 68348, 444193, 242643, 5646, 5604, 1685
K46Bamberg Obs. in Germany, 1 in MPEC 2018-J26 -- 1627
160Castelmartini Obs. in Italy, 9 in MPEC 2018-J26 -- 36183, 25916, 212359, 184990, 15745, 14402, 115052, 7889, 6569
703Catalina Sky Survey (CSS) in Arizona, 17 in MPECs 2018-J25 & 2018-J26 -- 2018 JP, 2018 JM, 2018 BY2, 2015 JP, 2014 JC31, 2002 JR100, 516457, 514652, 497117, 475967, 37336, 36284, 337084, 15745, 138847, 6053, 1627
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 14 in MPECs 2018-J24, 2018-J25 & 2018-J26 -- 2018 JP, 2018 JO, 2018 HS1, 2018 HM2, 2018 HH2, 2018 HH, 2018 HB, 2018 GV, 2018 GS4, 2018 GG5, 2018 GG1, 2017 VU14, 2017 QE18, 2013 EH89
006Fabra Obs. in Spain, 1 in MPEC 2018-J26 -- 138847
734Farpoint Obs. in Kansas, 1 in MPEC 2018-J24 -- 2018 JO
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2018-J25 -- 2018 JP
J95Great Shefford Obs. in England, 2 in MPECs 2018-J24 & 2018-J25 -- 2018 JP, 2018 JO
A17Guidestar Obs. in Germany, 2 in MPECs 2018-J25 & 2018-J26 -- 2018 JP, 2018 JN
K85Kelmis Obs., 1 in MPEC 2018-J26 -- 194126
Z43Landehen Obs., 2 in MPEC 2018-J26 -- 2018 BY2, 138847
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2018-J24 -- 2018 JO
932McCarthy Obs. in Connecticut, 1 in MPEC 2018-J25 -- 2018 JP
711McDonald Obs. in Texas, 7 in MPECs 2018-J24, 2018-J25 & 2018-J26 -- 2018 JP, 2018 JO, 2018 HL2, 2018 GZ4, 2018 GJ1, 2018 GG5, 2018 ER4
G96Mt. Lemmon Survey (MLS) in Arizona, 14 in MPECs 2018-J24 & 2018-J26 -- 2018 JO, 2018 GQ5, 2018 GL, 2018 FS1, 2016 JP, 2014 FD7, 2013 QH10, 2011 LY2, 54686, 434051, 265196, 216707, 138847, 9856
Z34NNHS Drummonds Obs., 1 in MPEC 2018-J26 -- 1627
C47Nonndorf Obs. in Austria, 1 in MPEC 2018-J25 -- 2018 JP
J69North Obs. in England, 1 in MPEC 2018-J26 -- 212359
Z80Northolt Branch Obs. in England, 5 in MPECs 2018-J25 & 2018-J26 -- 2018 JP, 388945, 25916, 212359, 164201
K61Rokycany Obs. in the Czech Republic, 2 in MPECs 2018-J25 & 2018-J26 -- 2018 JP, 2018 HL2
Y00SONEAR in Brazil, 3 in MPEC 2018-J26 -- 2013 US3, 444193, 5604
691Spacewatch 0.9m telescope in Arizona, 9 in MPECs 2018-J25 & 2018-J26 -- 2018 JP, 2018 HQ1, 2018 HA1, 2018 GF4, 2014 WG7, 2013 JY35, 2005 YW93, 517103, 498548
291Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2018-J26 -- 2018 GE, 2018 GD, 2018 CA, 2016 FC15, 2015 CV13
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2018-J26 -- 2018 BY2
I52Steward Obs. Mt. Lemmon Station in Arizona, 42 in MPECs 2018-J24 & 2018-J26 -- 2018 JO, 2018 JF, 2018 JE, 2018 JC, 2018 HU1, 2018 HS3, 2018 HQ1, 2018 HL2, 2018 HJ, 2018 HA1, 2018 GZ3, 2018 GX4, 2018 GT1, 2018 GS1, 2018 GQ2, 2018 GL1, 2018 GL, 2018 GJ2, 2018 GJ1, 2018 GG2, 2018 GF4, 2018 GA5, 2018 FV4, 2018 FS3, 2018 FS1, 2018 FO5, 2018 ER4, 2018 EQ4, 2018 EM2, 2018 DB2, 2018 CE2, 2018 AO18, 2017 XH62, 2017 WH14, 2017 VL15, 2017 SE19, 2017 GT5, 2017 BD29, 2016 JP, 2016 HP6, 2016 GZ215, 2016 CX264
Z52The Studios Obs., 1 in MPEC 2018-J26 -- 138847
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-J26 -- 2017 BF30
L01Visnjan Obs., 2 in MPECs 2018-J24 & 2018-J25 -- 2018 JP, 2018 JO
C51WISE in Earth polar orbit, 5 in MPEC 2018-J26 -- 2015 DP155, 2011 GN44, 513497, 9856, 6569
E08Wobblesock Obs. in New South Wales, 3 in MPEC 2018-J26 -- 2018 HM2, 2018 GR2, 2018 FQ5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 May '18

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2332 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 JNJPL Sentry15382100-210423.0491e-06-5.86-5.890JPL #2 for the day: Computed at 07:01 today Pacific time based on 74 observations spanning 2.5667 days (2018-May-05.42349 to 2018-May-07.99017). Diameter approximately 0.034 km. from weighted mean H=24.97.
NEODyS15382088-211241.41e-06-6.20-6.430NEODyS: "Based on 71 optical observations (of which 1 are rejected as outliers) from 2018-05-05.424 to 2018-05-07.943."
2018 JDNEODyS15382061-2118331.34e-04-4.81-4.82n/aNEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2018-05-04.401 to 2018-05-07.119."
2018 HJ2NEODyS1538208521.08e-04-3.76-3.830NEODyS: "Based on 55 optical observations (of which 0 are rejected as outliers) from 2018-04-23.412 to 2018-05-07.406."

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 8 May '18

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

2005Grabbed MPEC 2018-J27 - 2017 MT8 - see above
1844Generated Traffic Report
1538Noted that NEODyS has updated its 2018 HJ2 risk assessment - see above
Noted that NEODyS has updated its 2018 JD risk assessment - see above
Noted that JPL Sentry has updated its 2018 JN risk assessment - see above
Noted that NEODyS has posted 2018 JN as an impact risk - see above
Grabbed MPEC 2018-J24 - 2018 JO - see above
Grabbed MPEC 2018-J25 - 2018 JP - see above
Grabbed MPEC 2018-J26 - Daily Orbit Update - see above
0331Noted that JPL Sentry has posted 2018 JN as an impact risk - see above