Contents  on 22 July '17

NOTE:  These A/CC news pages will update less often for an extended period. All discoveries and observing credits will be reported, but we may miss some interim impact risk assessments and undercount NEOCP efforts, and there may be some gaps in our traffic reporting for Earth's Busy Neighborhood.

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 22 July '17

One object reported inside ten LD

Just one asteroidal object is known to be traveling within ten lunar distances (LD) of our home world today. NHATS target 2017 BS5 is inbound from 3.90 to 3.29 LD.

This report was generated at 1934 UTC with follow-up in today's DOU MPEC for 2017 BS5 and departed radar target 2017 CS. Also, radar observation from January was posted late yesterday for NHATS target 2016 YC8.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting on transient natural objects that approach the actually significant 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 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.

Radar Astrometry  on 22 July '17

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 0043 UTC when the database was dated 21 July

NEOCP Activity  on 22 July '17

The MPC's NEO Confirmation Page has 11 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eleven objects listed. Of these, six were "one nighters." So far The Tracking News has counted a total of 22 listings on the NEOCP today.

New MPECs  on 22 July '17

Minor Planet Electronic Circulars

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


MPEC 2017-O39 - "23:01 UT" - 2017 OH1


MPEC 2017-O38 - "22:58 UT" - 2017 OE1


MPEC 2017-O37 - "22:54 UT" - 2017 OG1


MPEC 2017-O36 - "22:51 UT" - 2017 OF1


MPEC 2017-O35 - "22:48 UT" - 2017 OD1


MPEC 2017-O34 - "14:27 UT" - 2016 AG165


MPEC 2017-O33 - "14:26 UT" - 2014 JW54


MPEC 2017-O32 - "14:24 UT" - 2015 OB79


MPEC 2017-O31 - "14:22 UT" - 2015 NY13


<< DOU on 22 July '17 >>  MPEC 2017-O30 - "11:59 UT" - Daily Orbit Update


MPEC 2017-O29 - "11:25 UT" - 2016 FC15


MPEC 2017-O28 - "00:02 UT" - 2014 QE365

Observers  on 22 July '17

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

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2017-O37 -- 2017 OG1
251Arecibo in Puerto Rico, 1 in radar -- 480883
H21Astronomical Research Obs. Westfield in Illinois, 29 in MPECs 2017-O30 & 2017-O37 -- 2017 OG1, 2017 NR6, 2017 NO6, 2017 NK, 2017 NH, 2017 MW7, 2017 MN7, 2017 MG4, 2017 MD4, 2017 MB1, 2017 MA4, 2017 FD65, 2017 CS, 2017 BS5, 2017 BM31, 2016 NG33, 2010 XO56, 2008 GH110, 66391, 496018, 368565, 276660, 20460, 190166, 12538, 11398, 6063, 2329, 1980
T05ATLAS Haleakala in Hawaii, 3 in MPEC 2017-O30 -- 2017 NS5, 2017 NM6, 66391
T08ATLAS Mauna Loa in Hawaii, 13 in MPECs 2017-O30, 2017-O37 & 2017-O38 -- 2017 OG1, 2017 OE1, 2008 MH1, 68348, 494975, 484517, 11398, 7336, 6063, 6053, 5143, 3288, 1917
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2017-O28 -- 2014 QE365
160Castelmartini Obs. in Italy, 9 in MPECs 2017-O30 & 2017-O37 -- 2017 OG1, 2017 MB1, 2017 GQ6, 2008 MH1, 416584, 366733, 232368, 143992, 138925
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 11 in MPECs 2017-O28, 2017-O30, 2017-O31, 2017-O32, 2017-O33, 2017-O34, 2017-O36, 2017-O37, 2017-O38 & 2017-O39 -- 2017 OH1, 2017 OG1, 2017 OF1, 2017 OE1, 2017 MB1, 2016 AG165, 2015 OB79, 2015 NY13, 2014 QE365, 2014 JW54, 496018
719Etscorn Obs. in New Mexico, 2 in MPEC 2017-O30 -- 20460, 142561
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2017-O37 -- 2017 OG1
K83Forti Obs., 3 in MPEC 2017-O30 -- 90075, 232368, 142561
I114Joseph Masiero in southern California via Gemini South Obs. in Chile, 1 in MPEC 2017-O30 -- 2017 MD9
K88GINOP-KHK in Hungary, 4 in MPECs 2017-O35, 2017-O36, 2017-O37 & 2017-O39 -- 2017 OH1, 2017 OG1, 2017 OF1, 2017 OD1
J95Great Shefford Obs. in England, 1 in MPEC 2017-O37 -- 2017 OG1
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2017-O35 -- 2017 OD1
I89'Steven M. Tilley in Louisiana via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2017-O35 -- 2017 OD1
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-O35 -- 2017 OD1
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-O35 -- 2017 OD1
W19Kalamazoo Obs. in Michigan, 2 in MPEC 2017-O30 -- 190166, 11398
Q59LCOGT Siding Spring Clamshell #2 in New South Wales, 1 in MPEC 2017-O35 -- 2017 OD1
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2017-O30 -- 6053
118Modra Obs. in Slovakia, 1 in MPEC 2017-O37 -- 2017 OG1
0895program code 5 via Nikolaev Obs. in Ukraine, 5 in MPEC 2017-O30 -- 2017 NS5, 2017 MB1, 2017 CS, 66391, 2102
Z80Northolt Branch Obs. in England, 1 in MPEC 2017-O30 -- 2017 MB1
F51Pan-STARRS 1 (PS1) in Hawaii, 6 in MPECs 2017-O30, 2017-O36 & 2017-O39 -- 2017 OH1, 2017 OF1, 2014 YS50, 2013 VG13, 477519, 436771
K63Pascoli Obs. in Italy, 1 in MPEC 2017-O37 -- 2017 OG1
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2017-O35 -- 2017 OD1
W25RMS Obs., 1 in MPEC 2017-O37 -- 2017 OG1
L04ROASTERR-1 in Romania, 1 in MPEC 2017-O37 -- 2017 OG1
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2017-O35, 2017-O36, 2017-O37 & 2017-O39 -- 2017 OH1, 2017 OG1, 2017 OF1, 2017 OD1
033Schwarzschild Obs. in Germany, 3 in MPECs 2017-O36, 2017-O37 & 2017-O39 -- 2017 OH1, 2017 OG1, 2017 OF1
W88!program code "!" (10) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2017-O30 -- 2017 BS6
Y00SONEAR in Brazil, 2 in MPECs 2017-O30 & 2017-O38 -- 2017 OE1, 495858
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2017-O30, 2017-O35, 2017-O36 & 2017-O39 -- 2017 OH1, 2017 OF1, 2017 OD1, 2017 HV4
J22Tacande Obs. in the Canary Islands, 1 in MPEC 2017-O30 -- 2001 NJ6
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2017-O29 -- 2016 FC15
C51WISE in Earth polar orbit, 1 in MPEC 2017-O30 -- 1980
C42Xingming Obs. in China, 1 in MPEC 2017-O35 -- 2017 OD1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 July '17

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
2017 NR6NEODyS1909211611.34e-11-9.67-9.670NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2017-07-15.277 to 2017-07-19.110."
JPL Sentry17002041-2110105.13418e-08-5.96-6.160JPL: Computed at 08:11 today Pacific time based on 22 observations spanning 3.8330 days (2017-Jul-15.27643 to 2017-Jul-19.109415). Diameter approximately 0.129 km. from weighted mean H=22.14.
2017 MB1NEODyS1909209811.06e-07-3.91-3.910NEODyS: "Based on 402 optical observations (of which 13 are rejected as outliers) from 2017-06-19.315 to 2017-07-21.103."
JPL Sentry17002098-209819.560e-08-3.96-3.960JPL: Computed at 07:56 today Pacific time based on 398 observations spanning 31.788 days (2017-Jun-19.31418 to 2017-Jul-21.10194). Diameter approximately 0.590 km. from weighted mean H=18.80.

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 22 July '17

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

2323Grabbed MPEC 2017-O35 - 2017 OD1 - see above
Grabbed MPEC 2017-O36 - 2017 OF1 - see above
Grabbed MPEC 2017-O37 - 2017 OG1 - see above
Grabbed MPEC 2017-O38 - 2017 OE1 - see above
Grabbed MPEC 2017-O39 - 2017 OH1 - see above
1934Generated Traffic Report
1909Noted that NEODyS has updated its 2017 MB1 risk assessment - see above
Noted that NEODyS has posted 2017 NR6 as an impact risk - see above
1700Noted that JPL Sentry has updated its 2017 MB1 risk assessment - see above
Noted that JPL Sentry has updated its 2017 NR6 risk assessment - see above
Grabbed MPEC 2017-O31 - 2015 NY13 - see above
Grabbed MPEC 2017-O32 - 2015 OB79 - see above
Grabbed MPEC 2017-O33 - 2014 JW54 - see above
Grabbed MPEC 2017-O34 - 2016 AG165 - see above
1243Grabbed MPEC 2017-O29 - 2016 FC15 - see above
Grabbed MPEC 2017-O30 - Daily Orbit Update - see above
0043Grabbed MPEC 2017-O28 - 2014 QE365 - see above
Noted Radar Astrometry database update - see above