2016-07-30 Tracking News

Contents on 30 July '16

Traffic Report -- one object
IAU Minor Planet Center
- NEOCP Activity -- 32 listings
- New MPECs -- two MPECs
Observers -- 23 observers
Impact Risk Monitoring -- four objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 696 risk-listed objects, 44 have had news in the last 30 days. Updated at 2205 UTC on 30 July.
Ephemerides for risk-rated, nearby objects & NHATS targets
News archive (old) & news image catalog (discontinued)
Object Links - mainly for radar targets & close passers (mostly discontinued)
Observing Campaigns (revised 8 April)

The latest A/CC news is available via framed access, 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 30 July '16

One object reported inside ten LD

One transient natural object is reported within ten lunar distances (LD) of our planet today. NHATS target 2005 OH3 is calculated with great uncertainty to be outbound from 6.8 to 6.4 LD*.

This report was updated at 2110 UTC with new discovery 2016 OV (MPEC), which will enter our ten-LD reporting zone on August 5th, coming to about 9.0 LD* at its closest. The day's first traffic report was generated at 1809 UTC with follow-up in today's DOU MPEC for departed 2016 OF and two risk-listed NHATS targets: departed 2016 NL39 and distant 2015 KE.

Note: After various delays we are nearly caught up on data collection and processing for this month. And, as of late yesterday, we have finally solved problems that badly interfered with our internal handling of unprecedentedly high-numbered MPECs (above 359) since July 26th. Rather than just skipping the last nine days of missed traffic reporting or trying to recap so much information all in today's report, we will be back-posting daily reports soon in their respective locations, starting with July 21st.

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. "LD*" 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 30 July '16

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, twelve were "one nighters." So far The Tracking News has counted a total of 38 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 30 July '16

Minor Planet Electronic Circulars

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

MPEC 2016-O409 time-stamped "12:03 UT" - Daily Orbit Update - see below
MPEC 2016-O410 time-stamped "18:45 UT" - 2016 OV

MPEC 2016-O410 - "18:45 UT" - 2016 OV

K16O00V 2016 OV (risk listed, Q=4.320 AU, Earth MOID=2.6 LD, H=24.5 ~43m, close passer) was picked up at 0726 UT on 28 July by Pan-STARRS 1 (PS1), observing it at July 28.31-34p4. This detection was confirmed by Kristie Nault via Apache Point Obs. (July 29.26p3) and Astronomical Research Obs. Westfield (July 30.15-16p4).

<< DOU on 30 July '16 >> MPEC 2016-O409 - "12:03 UT" - Daily Orbit Update

Observations of risk-listed objects
K16N39L 2016 NL39 (small asteroid, arc=16 days, H=27.5 ~11m, close passer, NHATS target) from ARO Westfield (July 29.26-29p3 at V=22.5-7) and David Tholen's team on Mauna Kea (July 29.47-49p4 at R=22.0-22.2)
K16J29B 2016 JB29 (small asteroid, arc=78 days, H=24.7 ~39m) from PS1 (May 30.40-43p4, June 4.53-56p3 & 5.56-58p2)
K15K00E 2015 KE (small asteroid, arc=2 opp, H=26.2 ~19m, close passer, NHATS target) from PS1 (2015 May 23.35p1 & 2015 June 10.32-34p2)
Observations of recently (no longer) risk-listed objects
K16N22X 2016 NX22 (small asteroid, arc=20 days, H=23.5 ~68m) from Haute Provence Obs. (July 28.97p7)
Observations of close-passing objects
K16O00F 2016 OF (arc=7 days, H=23.1 ~81m) from Haute Provence Obs. (July 28.90-91p8 & 28.96p5)
Observation campaigns (NHATS targets, radar support)
K16N00R 2016 NR (arc=26 days, H=23.9 ~56m, NHATS) from ARO Westfield (July 29.14-17p3 at V=22.7-23.1)
K16AJ3F 2016 AF193 (arc=95 days, H=21.9 ~141m, NHATS) from PS1 (2015 Dec. 9.61-63p3 at w=21.9-22.2)
K16A65V 2016 AV65 (arc=83 days, H=25.0 ~34m, NHATS) from PS1 (2015 Dec. 6.21-24p3)
-- NHATS target table & ephemerides
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K16N39B 2016 NB39 (arc=15 days, H=23.8 ~59m) from Haute Provence Obs. (July 29.07-08p5)
K16N32T 2016 NT32 (arc=18 days, H=23.1 ~81m) from ARO Westfield (July 29.37-39p3)
K16N23F 2016 NF23 (arc=21 days, H=22.9 ~89m) from Chabot Obs. (July 30.28p3)
K16N15W 2016 NW15 (arc=24 days, H=25.2 ~31m) from Mt. John Obs. (July 29.57p4)
K16M00S 2016 MS (arc=30 days, H=23.7 ~62m) from PS1 (July 29.33-36p3)
K16K03W 2016 KW3 (arc=60 days, H=22.2 ~123m) from ARO Westfield (July 29.12-14p3 at V=22.0-22.1)
K16A65L 2016 AL65 (arc=91 days, H=23.0 ~85m) from Tenagra II Obs. (Jan. 13.53-54p3)
K15R36V 2015 RV36 (arc=2 opp, H=23.0 ~85m) from Nault/Apache Point (July 29.26p3 at R=21.7-22.2)
K14OX9L 2014 OL339 (arc=3 opp, H=22.9 ~89m) from ARO Westfield (July 29.30-32p3 at V=22.5-8)
K16A08J 2016 AJ8 (Q=4.156 AU, arc=145 days, H=21.9 ~141m) from PS1 (2015 Dec. 13.36-39p4)
K12L01D 2012 LD1 (arc=2 opp, H=21.8 ~148m) from Nault/Apache Point (July 29.30p3 at R=22.3-4)
Observations of other objects
K16N33F 2016 NF33 (arc=18 days, H=20.9 ~224m) from Haute Provence Obs. (July 28.94p4) and Mt. John Obs. (July 29.49-50p5)
K16N22W 2016 NW22 (arc=3 opp, H=20.8 ~234m) from the Mt. Lemmon Survey (MLS) (2010 Nov. 1.25-28p4 at V=21.4-22.7, 2013 Oct. 5.41-42p4 at V=20.2-21.1 & 2013 Oct. 9.29-31p4 at V=20.1-3), the Spacewatch 0.9m telescope (2013 Sept. 13.38-42p3 & 2013 Oct. 12.15-19p3), PS1 (2013 Sept. 15.55-59p3), Haute Provence Obs. (July 28.98-99p10), and Tony Evans via Slooh.com Canary Islands Obs. (July 29.15-17p2)
K16N00F 2016 NF (arc=28 days, H=18.2 ~776m) from Mt. John Obs. (July 29.43-44p3)
K16L48U 2016 LU48 (arc=52 days, H=21.7 ~155m) from ARO Westfield (July 29.23-27p3 at V=22.0-22.3)
K16L11M 2016 LM11 (i=36.5°, arc=51 days, H=18.9 ~562m) from ARO Westfield (July 29.17-21p3 at V=22.2-4)
K16L10Z 2016 LZ10 (arc=50 days, H=20.1 ~323m) from Sencelles Obs. (July 29.86-00p6) and Santa Mama Obs. (July 29.90-92p5)
K16L09E 2016 LE9 (arc=55 days, H=17.9 ~891m) from Santa Mama Obs. (July 29.85-88p5)
K16L02A 2016 LA2 (Q=5.969 AU, arc=57 days, H=21.7 ~155m) from ARO Westfield (July 29.12-17p4 at V=22.0-22.5)
K16CQ4L 2016 CL264 (arc=2 opp, H=19.1 ~513m) from Schiaparelli Obs. (July 29.87-89p2)
K16AG5O 2016 AO165 (Q=5.490 AU, arc=198 days, H=19.9 ~355m) from the Catalina Sky Survey (CSS) (Feb. 4.17-19p3)
K16A09A 2016 AA9 (arc=115 days, H=19.1 ~513m) from PS1 (2015 Dec. 17.52-56p4)
K14R11C 2014 RC11 (arc=2 opp, H=20.6 ~257m) from ARO Westfield (July 29.30-34p3 at V=22.0-22.2)
K13S25C 2013 SC25 (arc=4 opp, H=19.2 ~490m) from ARO Westfield (July 29.19-20p3 at V=21.9-22.2)
K13O02M 2013 OM2 (arc=3 opp, H=20.1 ~323m) from ARO Westfield (July 29.31-34p3 at V=22.4-7)
K13N06V 2013 NV6 (arc=3 opp, H=17.7 ~977m) from PS1 (July 29.28-31p4)
K12R01O 2012 RO1 (arc=2 opp, H=19.5 ~426m) from Nault/Apache Point (July 29.30-31p3)
K08O07S 2008 OS7 (arc=3 opp, H=20.4 ~282m) from PS1 (July 29.59-60p2)
K03S15R 2003 SR15 (arc=3 opp, H=21.6 ~162m) from ARO Westfield (July 29.24-28p4 at V=21.7-22.3)
k8741 468741 2010 VM1 from MASTER IAC Obs. (July 28.98-99p4)
Y7813 347813 2002 NP1 from PS1 (July 29.51-54p4)
R7127 277127 2005 GW119 from PS1 (July 29.34-36p3)
F4244 154244 2002 KL6 from Gravina Obs. (July 29.83-89p5), Nonndorf Obs. (July 29.92-93p6), and Spirit Marsh Obs. (July 30.25-26p3)
D8847 138847 2000 VE62 from ATLAS Haleakala (July 29.38-42p4)
D7170 137170 1999 HF1 from Kalamazoo Obs. (June 25.16-18p6)
A5140 105140 2000 NL10 from ATLAS Haleakala (July 29.56-60p4)
87311 87311 2000 QJ1 from MASTER IAC Obs. (July 29.12-14p2)
86067 86067 1999 RM28 from PS1 (July 29.33-36p3)
68350 68350 2001 MK3 from Pallerols Obs. (July 28.97-99p2 & 29.05p1)
68346 68346 2001 KZ66 from ATLAS Haleakala (July 29.30-34p4)
18882 18882 1999 YN4 from MASTER IAC Obs. (July 29.06-08p3)
03352 3352 McAuliffe (1981 CW) from Purple Mtn. Obs. Xuyi Station (July 29.82-84p3)
02201 2201 Oljato (1947 XC) from PS1 (July 29.56-57p2)
01866 1866 Sisyphus (1972 XA) from Kalamazoo Obs. (June 25.13-15p6)
00433 433 Eros (1898 DQ) from MASTER IAC Obs. (July 29.12-13p2) and Gravina Obs. (July 29.86-88p3)

Observers on 30 July '16

A total of 23 observers appear in today's MPECs.

Code	Observer / observatory
`705"`	Kristie Nault via Apache Point Obs. in New Mexico, 4 in MPECs 2016-O409 & 2016-O410 -- 2016 OV, 2015 RV36, 2012 RO1, 2012 LD1
`H21`	Astronomical Research Obs. Westfield in Illinois, 13 in MPECs 2016-O409 & 2016-O410 -- 2016 OV, 2016 NT32, 2016 NR, 2016 NL39, 2016 LU48, 2016 LM11, 2016 LA2, 2016 KW3, 2014 RC11, 2014 OL339, 2013 SC25, 2013 OM2, 2003 SR15
`T05`	ATLAS Haleakala in Hawaii, 3 in MPEC 2016-O409 -- 68346, 138847, 105140
`703`	Catalina Sky Survey in Arizona, 1 in MPEC 2016-O409 -- 2016 AO165
`G58`	Chabot Obs. in northern California, 1 in MPEC 2016-O409 -- 2016 NF23
`K73`	Gravina Obs. in Italy, 2 in MPEC 2016-O409 -- 154244, 433
`511`	Haute Provence Obs. in Germany, 5 in MPEC 2016-O409 -- 2016 OF, 2016 NX22, 2016 NW22, 2016 NF33, 2016 NB39
`W19`	Kalamazoo Obs. in Michigan, 2 in MPEC 2016-O409 -- 137170, 1866
`Z22`	MASTER IAC Obs. in the Canary Islands, 4 in MPEC 2016-O409 -- 87311, 468741, 18882, 433
`5682`	David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2016-O409 -- 2016 NL39
`474`	Mt. John Obs. in New Zealand, 3 in MPEC 2016-O409 -- 2016 NW15, 2016 NF33, 2016 NF
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2016-O409 -- 2016 NW22
`C47`	Nonndorf Obs. in Austria, 1 in MPEC 2016-O409 -- 154244
`C27`	Pallerols Obs. in Spain, 1 in MPEC 2016-O409 -- 68350
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 15 in MPECs 2016-O409 & 2016-O410 -- 2016 OV, 2016 NW22, 2016 MS, 2016 JB29, 2016 AV65, 2016 AJ8, 2016 AF193, 2016 AA9, 2015 KE, 2013 NV6, 2008 OS7, 86067, 347813, 277127, 2201
`D29`	Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2016-O409 -- 3352
`B38`	Santa Mama Obs. in Italy, 2 in MPEC 2016-O409 -- 2016 LZ10, 2016 LE9
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2016-O409 -- 2016 CL264
`K14`	Sencelles Obs. in Spain, 1 in MPEC 2016-O409 -- 2016 LZ10
`G403`	Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2016-O409 -- 2016 NW22
`691`	Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2016-O409 -- 2016 NW22
`V78`	Spirit Marsh Obs. in Minnesota, 1 in MPEC 2016-O409 -- 154244
`926`	Tenagra II Obs. in Arizona, 1 in MPEC 2016-O409 -- 2016 AL65

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 30 July '16

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL 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 JPL NEO Program 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

2016 OV	JPL Sentry	2205	2083-2103	2	1.0e-07	-6.97	-6.97	0	JPL: "Analysis based on 11 observations spanning 1.8492 days (2016-Jul-28.3101 to 2016-Jul-30.159317)." Diameter approximately 0.037 km. from mean, weighted H=24.8.

2016 NL39	NEODyS	2205	2067-2116	112	5.15e-03	-3.78	-3.94	0	NEODyS #2 for the day: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2016-07-13.464 to 2016-07-29.486."
2016 NL39	JPL Sentry	1544	2055-2116	56	1.4e-03	-4.35	-4.65	0	JPL: "Analysis based on 45 observations spanning 16.022 days (2016-Jul-13.462934 to 2016-Jul-29.485058)." Diameter approximately 0.011 km. from mean, weighted H=27.5.

2016 JB29	NEODyS	2205	2090-2109	5	2.07e-06	-5.83	-6.13	0	NEODyS #2 for the day: "Based on 142 optical observations (of which 4 are rejected as outliers) from 2016-05-11.375 to 2016-07-28.623."
2016 JB29	JPL Sentry	1544	2081-2097	4	5.4e-07	-6.41	-6.44	0	JPL: "Analysis based on 134 observations spanning 78.248 days (2016-May-11.37449 to 2016-Jul-28.622454)." Diameter approximately 0.038 km. from mean, weighted H=24.7.

2015 KE	NEODyS	2205	R E M O V E D						NEODyS #2 for the day

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 30 July '16

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

2205	Noted that NEODyS has removed 2015 KE as an impact risk - see above Noted that NEODyS has updated its 2016 JB29 risk assessment - see above Noted that NEODyS has updated its 2016 NL39 risk assessment - see above Noted that JPL Sentry has posted 2016 OV as an impact risk - see above
2110	Updated Traffic Report
1907	Grabbed MPEC 2016-O410 - 2016 OV - see above
1544	Noted that NEODyS has updated its 2015 KE risk assessment - see above Noted that JPL Sentry has updated its 2016 JB29 risk assessment - see above Noted that NEODyS has updated its 2016 JB29 risk assessment - see above Noted that JPL Sentry has updated its 2016 NL39 risk assessment - see above Noted that NEODyS has updated its 2016 NL39 risk assessment - see above Grabbed MPEC 2016-O409 - Daily Orbit Update - see above

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