2017-01-08 Tracking News

Contents on 8 January '17

Traffic Report -- five objects
IAU Minor Planet Center
- NEOCP Activity -- 78 listings
- New MPECs -- ten MPECs
Observers -- 36 observers
Impact Risk Monitoring -- two objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 750 risk-listed objects, 41 have had news in the last 31 days. Updated at 2028 UTC on 8 Jan.
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 8 January '17

Five objects reported inside ten LD

Five asteroidal objects are known to be traveling within ten lunar distances (LD) of our home world today. The nearest is within Earth's SOI (sphere of gravitational influence): risk-listed 2017 AS4 comes its closest to Earth this time around, reaching 1.46 LD at 1704 UTC, and its closest to the Moon -- 2.14 LD at 1345 UTC. NHATS target 2017 AZ3 exits the SOI, passing from 1.72 to 2.75 LD, and a new discovery, intruder 2017 AG13, enters Earth's SOI, coming in from 5.41 to 1.95 LD on its way to zooming safely through the Earth-Moon system tomorrow.

The other two objects are further out and moving away: newly announced 2017 AF13 is outbound from 4.23 to 5.52 LD and NHATS target 2016 YR from 9.27 to 9.58 LD.

Coming towards us next, latest discovery 2017 AJ13 enters ten LD on January 11th.

Earth passage	I D	~Size	Distance Today	Notes

0.54 LD tomorrow	2017 AG13	20 m	1.95 from 5.41 LD	NEW, enters Earth SOI, intruder tomorrow - MPEC

1.29 LD yesterday	2017 AZ3	3 m	1.72 to 2.75 LD	NHATS target, exits Earth SOI
1.46 LD today	2017 AS4	16 m	1.46 LD	enters Earth SOI, Earth closest at 1704 UTC, Moon closest 2.14 LD at 1345 UTC

2.81 LD Jan. 6	2017 AF13	17 m	4.23 to 5.52 LD	NEW - MPEC

7.16 LD Dec. 27	2016 YR	12 m	9.27 to 9.58 LD	NHATS target
Approaching
6.71 LD Jan. 14	2017 AJ13	50 m	< 10 LD Jan. 11, NEW - MPEC
7.10 LD Feb. 5	2013 FK	74 m	< 10 LD Feb. 2 - DOU
9.1 LD Feb. 4	2005 VL1	13 m	< 10 LD Feb. 1, uncertainty +/- 15.0000 hours, NHATS target
9.46 LD Jan. 18	2016 YC8	41 m	< 10 LD Jan. 16, NHATS target - DOU

This report was updated at 2348 UTC with the discoveries of approaching 2017 AJ13 (MPEC) and departed 2017 AK13 (MPEC), which passed Earth at 8.76 LD on January 3rd. Today's first traffic report was generated at 2030 UTC with new discoveries 2017 AG13 (MPEC) and 2017 AF13 (MPEC), and with follow-up in today's DOU MPEC for approaching objects 2013 FK and risk-listed NHATS target 2016 YC8, and for departed objects 2017 AG5 and 2017 AE3.

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.

NEOCP Activity on 8 January '17

The MPC's NEO Confirmation Page has 78 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 78 objects listed. Of these, 34 were "one nighters." So far The Tracking News has counted a total of 93 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 January '17

Minor Planet Electronic Circulars

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

MPEC 2017-A54 time-stamped "13:05 UT" - Daily Orbit Update - see below
MPEC 2017-A55 time-stamped "14:54 UT" - 1994 BB - see below
MPEC 2017-A56 time-stamped "15:08 UT" - 2017 AE13 - see below
MPEC 2017-A57 time-stamped "15:11 UT" - 2017 AF13 - see below
MPEC 2017-A58 time-stamped "15:14 UT" - 2017 AG13 - see below
MPEC 2017-A59 time-stamped "21:31 UT" - 2017 AH13 - see below
MPEC 2017-A60 time-stamped "21:34 UT" - 2017 AJ13 - see below
MPEC 2017-A61 time-stamped "21:42 UT" - 2017 AK13 - see below
MPEC 2017-A62 time-stamped "21:46 UT" - 2017 AL13 - see below
MPEC 2017-A63 time-stamped "21:49 UT" - 2017 AM13

MPEC 2017-A63 - "21:49 UT" - 2017 AM13

K17A13M 2017 AM13 (small asteroid, H=25.0 ~34m) was picked up at 0943 UT on 7 Jan. by the Mt. Lemmon Survey (MLS), observing it at Jan. 7.41-46p8. This detection was confirmed by Pan-STARRS 1 (PS1) (Jan. 2.45-47p3), Steward Obs. Mt. Lemmon Station (Jan. 7.48-49p4 & 8.30-31p3), and St. Pardon de Conques Obs. (Jan. 8.09-10p3).

MPEC 2017-A62 - "21:46 UT" - 2017 AL13

K17A13L 2017 AL13 (small asteroid, H=25.5 ~27m) was picked up at 0934 UT on 7 Jan. by MLS, observing it at Jan. 7.40-44p7 and 8.25p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Jan. 7.45p4 & 8.27-28p4), St. Pardon de Conques Obs. (Jan. 8.07-08p3), Schiaparelli Obs. (Jan. 8.09p2), Astronomical Research Obs. Westfield (Jan. 8.28-29p4), the Spacewatch 0.9m telescope (Jan. 8.34-35p2), and Celado Obs. (Jan. 8.86p3).

MPEC 2017-A61 - "21:42 UT" - 2017 AK13

K17A13K 2017 AK13 (Earth MOID=8.8 LD, H=23.6 ~65m) was picked up at 0743 UT on 7 Jan. by MLS, observing it at Jan. 7.32-33p4 and 8.30p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Jan. 7.39p4 & 8.30p4), Volta Obs. (Jan. 7.87-89p6), Dax Obs. (Jan. 7.96-97p3), Calar Alto Schmidt (Jan. 7.96-97p15), Farra d'Isonzo Obs. (Jan. 7.97-98p3), Schiaparelli Obs. (Jan. 8.03-04p5), St. Pardon de Conques Obs. (Jan. 8.03-04p3), ARO Westfield (Jan. 8.29-31p8), Spacewatch 0.9m (Jan. 8.36-38p3), Sormano Obs. (Jan. 8.79-80p3), Saint-Barthelemy Obs. (Jan. 8.83p6), Celado Obs. (Jan. 8.83-84p3), Castelmartini Obs. (Jan. 8.85-86p3), and Bernezzo Obs. (Jan. 8.89p3).

MPEC 2017-A60 - "21:34 UT" - 2017 AJ13

K17A13J 2017 AJ13 (Earth MOID=6.1 LD, H=24.1 ~51m) was picked up at 0535 UT on 7 Jan. by MLS, observing it at Jan. 7.23-25p4 and 7.37-38p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Jan. 7.31p3 & 8.24p4), Arcadia Obs. (Jan. 7.55-58p3), Castelmartini Obs. (Jan. 7.85p5), Dax Obs. (Jan. 7.91-92p3), Schiaparelli Obs. (Jan. 7.97-99p3), St. Pardon de Conques Obs. (Jan. 7.99-00p3), ARO Westfield (Jan. 8.22p3), Spacewatch 0.9m (Jan. 8.29p3), Celado Obs. (Jan. 8.84p3), and Farra d'Isonzo Obs. (Jan. 8.85-86p2).

MPEC 2017-A59 - "21:31 UT" - 2017 AH13

K17A13H 2017 AH13 (H=21.1 ~204m) was picked up at 1358 UT on 4 Jan. by PS1, observing it at Jan. 4.58-62p4. This detection was confirmed by Tenagra II Obs. (Jan. 6.44-45p3), the Spacewatch 1.8m telescope (Jan. 7.47p3), Spacewatch 0.9m (Jan. 7.54-55p3), and ARO Westfield (Jan. 8.46-47p3).

MPEC 2017-A58 - "15:14 UT" - 2017 AG13

K17A13G 2017 AG13 (Earth MOID=0.0 LD, H=26.2 ~19m) was picked up at 0739 UT on 7 Jan. by the Catalina Sky Survey (CSS), observing it at Jan. 7.32-33p4, 7.44p4, and 7.52p4. This detection was confirmed by Steward Mt. Lemmon Sta. (Jan. 7.49-50p4 & 8.37-38p4), Volta Obs. (Jan. 7.89-91p4), Cesena Obs. (Jan. 7.89-95p4), Paus Obs. (Jan. 7.90p3), Dax Obs. (Jan. 7.98-99p3), St. Pardon de Conques Obs. (Jan. 8.04-05p3), Schiaparelli Obs. (Jan. 8.05-07p4), RMS Obs. (Jan. 8.47-48p2), and MLS (Jan. 8.53p4).

MPEC 2017-A57 - "15:11 UT" - 2017 AF13

K17A13F 2017 AF13 (Earth MOID=2.2 LD, H=26.5 ~17m) was picked up at 0514 UT on 7 Jan. by MLS, observing it at Jan. 7.22p4, 7.30p4, 7.40p4, and 8.31p3. This detection was confirmed by Steward Mt. Lemmon Sta. (Jan. 7.25p4 & 7.31p3), SONEAR (Jan. 7.26-28p6), Spacewatch 0.9m (Jan. 7.28-29p2), Sergio Foglia via iTelescope Obs. Siding Spring (Jan. 7.46p2), Castelmartini Obs. (Jan. 7.84p4), Dax Obs. (Jan. 7.94-95p3), Schiaparelli Obs. (Jan. 7.94-95p3), Calar Alto Schmidt (Jan. 7.99p4), and St. Pardon de Conques Obs. (Jan. 8.02p3).

MPEC 2017-A56 - "15:08 UT" - 2017 AE13

K17A13E 2017 AE13 (small asteroid, Earth MOID=5.8 LD, H=23.9 ~56m) was picked up at 1233 UT on 4 Jan. by PS1, observing it at Jan. 4.52-56p4. This detection was confirmed by Tenagra II Obs. (Jan. 5.35p3) and Spacewatch 1.8m (Jan. 8.29-30p3).

MPEC 2017-A55 - "14:54 UT" - 1994 BB

J94B00B 1994 BB (small asteroid, H=23.5 ~68m) from MLS (Jan. 5.30-31p3, 7.24p3 & 8.21-23p4), Steward Mt. Lemmon Sta. (Jan. 5.35-36p3, 7.29-30p4, 7.39-40p4 & 8.27-28p3), Dave Balam via Plaskett 1.8m Telescope (Jan. 5.45p3), and Tenagra II Obs. (Jan. 7.23-26p3)

<< DOU on 8 Jan. '17 >> MPEC 2017-A54 - "13:05 UT" - Daily Orbit Update

Observations of risk-listed objects
K16Y08C 2016 YC8 (small asteroid, arc=12 days, H=24.6 ~41m, close passer, NHATS target) from Farra d'Isonzo Obs. (Jan. 7.87-89p2) and Spacewatch via Kitt Peak Natl. Obs. (KPNO) (Jan. 8.33p3)
Observations of recently (no longer) risk-listed objects
K16Y04J 2016 YJ4 (small asteroid, Q=4.463 AU, arc=15 days, H=23.3 ~74m) from UH/Tholen NEO Follow-Up 2.24m Telescope (Jan. 4.29p1)
Observations of close-passing objects
K17A05G 2017 AG5 (arc=3 days, H=22.6 ~102m) from Petit Jean Mtn. South Obs. (PJMSO) (Jan. 8.13-14p8)
K17A03E 2017 AE3 (arc=6 days, H=21.8 ~148m) from MLS (Jan. 7.22-23p4) and PJMSO (Jan. 8.15-16p6)
K13F00K 2013 FK (Q=4.061 AU, arc=2 opp, H=23.2 ~78m) from MLS (Jan. 7.12-14p4)
Observation campaigns (NHATS targets, radar support)
K17A04T 2017 AT4 (arc=3 days, H=26.7 ~15m, NHATS) from Steward Mt. Lemmon Sta. (Jan. 8.21p4)
K17A04R 2017 AR4 (arc=3 days, H=24.6 ~41m, NHATS) from M57 Obs. (Jan. 6.98-01p2 & 7.05p1) and Steward Mt. Lemmon Sta. (Jan. 8.20-21p4)
K16U36N 2016 UN36 (arc=74 days, H=24.1 ~51m, NHATS) from MLS (Jan. 7.28-29p4)
K16U05N 2016 UN5 (arc=79 days, H=25.0 ~34m, NHATS) from Spacewatch/KPNO (Jan. 7.52-53p3 at R=21.6-22.1)
-- NHATS target table & ephemerides
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K17A03F 2017 AF3 (arc=5 days, H=25.3 ~29m) from MLS (Jan. 7.18-19p4) and Spacewatch 0.9m (Jan. 8.25-27p3)
K16Y08Q 2016 YQ8 (arc=12 days, H=22.8 ~93m) from MLS (Jan. 5.25-27p4)
K16W00V 2016 WV (arc=39 days, H=24.2 ~49m) from ARO Westfield (Dec. 19.32-33p5)
K16T18D 2016 TD18 (arc=102 days, H=23.5 ~68m) from MLS (Jan. 7.47-49p4)
K16Y08H 2016 YH8 (arc=16 days, H=21.9 ~141m) from Spacewatch 0.9m (Jan. 8.25-27p3)
Observations of other objects
K17A05F 2017 AF5 (q=0.130 AU, Q=4.658 AU, arc=3 days, H=17.6 ~1.02 km) from CSS (Jan. 7.42-43p4)
K17A03V 2017 AV3 (i=36.5°, arc=6 days, H=19.5 ~426m) from Spacewatch/KPNO (Jan. 8.26-27p3)
K16Y10U 2016 YU10 (arc=14 days, H=19.0 ~537m) from CSS (Jan. 7.38-39p3) and Steward Mt. Lemmon Sta. (Jan. 7.50p1)
K16Y07W 2016 YW7 (arc=16 days, H=20.5 ~269m) from Spacewatch 0.9m (Jan. 8.20-22p3)
K16Y04N 2016 YN4 (Q=4.181 AU, arc=14 days, H=19.9 ~355m) from CSS (Jan. 7.28-29p4)
K16X01T 2016 XT1 (arc=74 days, H=19.7 ~389m) from MLS (Jan. 5.14-16p4)
K16W08L 2016 WL8 (arc=42 days, H=21.0 ~214m) from MLS (Jan. 5.21-23p4)
K16W08J 2016 WJ8 (Q=4.391 AU, arc=45 days, H=18.1 ~812m) from Spacewatch/KPNO (Jan. 8.14-17p3)
K16V05Y 2016 VY5 (arc=142 days, H=20.2 ~309m) from Cesena Obs. (Jan. 7.75-79p3)
K16V03V 2016 VV3 (Q=4.844 AU, arc=62 days, H=19.5 ~426m) from Spacewatch 1.8m (Jan. 7.55p2)
K16UA1E 2016 UE101 (arc=71 days, H=21.0 ~214m) from CSS (Jan. 7.25-27p4), Cesena Obs. (Jan. 7.83-86p3), and ISON New Mexico Obs. (Jan. 8.13-15p3)
K16U42B 2016 UB42 (arc=72 days, H=20.9 ~224m) from Spacewatch/KPNO (Jan. 8.18-20p3)
K16U04U 2016 UU4 (arc=81 days, H=21.3 ~186m) from Spacewatch/KPNO (Jan. 8.21-23p3 at R=21.4-22.1)
K16T18J 2016 TJ18 (arc=94 days, H=20.5 ~269m) from Spacewatch/KPNO (Jan. 7.54-55p3)
K16S45G 2016 SG45 (arc=101 days, H=19.5 ~426m) from Spacewatch/KPNO (Jan. 8.08-09p3)
K16R01O 2016 RO1 (arc=126 days, H=19.5 ~426m) from MLS (Jan. 7.11-12p3)
K16P08R 2016 PR8 (Q=4.754 AU, arc=2 opp, H=18.9 ~562m) from CSS (Jan. 7.36-37p4)
K16N32Q 2016 NQ32 (arc=2 opp, H=21.1 ~204m) from CASADO (Dec. 30.08-16p3)
K16N15L 2016 NL15 (arc=2 opp, H=20.4 ~282m) from PJMSO (Jan. 8.14-15p6)
K16L08M 2016 LM8 (arc=2 opp, H=18.8 ~589m) from CSS (Jan. 5.42-43p4)
K16H03V 2016 HV3 (arc=2 opp, H=20.0 ~339m) from Spacewatch/KPNO (Jan. 8.11-12p2)
K15Xb8Y 2015 XY378 (q=0.363 AU, arc=2 opp, H=19.7 ~389m) from Spacewatch 1.8m (Jan. 8.12-14p3)
K15VE2L 2015 VL142 (Q=4.076 AU, arc=3 opp, H=16.8 ~1.48 km) from MLS (2006 Feb. 28.19-23p8 at V=21.4-22.8) and Spacewatch/KPNO (Jan. 7.49-51p3)
K15V66O 2015 VO66 (q=0.381 AU, arc=2 opp, H=20.6 ~257m) from Spacewatch/KPNO (Jan. 8.29-30p3)
K15Bo9N 2015 BN509 (arc=4 opp, H=20.6 ~257m) from Spacewatch 0.9m (Jan. 7.44-47p3)
K14K45Z 2014 KZ45 (arc=4 opp, H=20.3 ~295m) from MLS (Jan. 7.30-31p3)
K14A17D 2014 AD17 (arc=2 opp, H=20.2 ~309m) from MLS (Jan. 5.33-34p3)
K12R03G 2012 RG3 (arc=5 opp, H=17.9 ~891m) from Spacewatch 1.8m (Jan. 8.07p3)
K11Q96P 2011 QP96 (Q=4.633 AU, arc=2 opp, H=18.7 ~616m) from MLS (Jan. 7.48-49p4)
K10N01T 2010 NT1 (i=39.5°, arc=4 opp, H=19.5 ~426m) from MLS (Jan. 7.36-37p4)
K08U90L 2008 UL90 (IEO, Q=0.959 AU, arc=5 opp, H=18.6 ~645m) from PJMSO (Jan. 8.03-04p6)
K07C19A 2007 CA19 (Q=5.119 AU, arc=5 opp, H=17.6 ~1.02 km) from Spacewatch 1.8m (Jan. 8.15-19p3)
K06U00M 2006 UM (arc=3 opp, H=18.5 ~676m) from PJMSO (Jan. 8.02-03p6)
K06Q89T 2006 QT89 (arc=3 opp, H=20.1 ~323m) from Spacewatch 1.8m (Jan. 7.54p3)
K06O15H 2006 OH15 (i=37.0°, arc=2 opp, H=18.8 ~589m) from MLS (Jan. 7.26-28p4)
K06O05S 2006 OS5 (Q=4.554 AU, arc=3 opp, H=18.4 ~708m) from MLS (Jan. 5.32-34p4)
K03Q05H 2003 QH5 (arc=3 opp, H=20.2 ~309m) from Spacewatch/KPNO (Jan. 8.34p3)
K01P09T 2001 PT9 (arc=3 opp, H=20.9 ~224m) from Spacewatch/KPNO (Jan. 8.31-32p3)
K01A02O 2001 AO2 (Q=4.928 AU, arc=4 opp, H=18.3 ~741m) from MLS (Jan. 5.14-16p4)
J98Y04M 1998 YM4 (arc=4 opp, H=19.7 ~389m) from MLS (Jan. 5.25-26p4)
l7491 477491 2010 CD19 from Spacewatch 0.9m (Jan. 7.56p3)
l4554 474554 2003 YQ94 from MLS (Jan. 7.30-31p4)
e4108 404108 2012 SF51 from MLS (Jan. 7.09-10p4)
c8838 388838 2008 EZ5 from MLS (Jan. 7.46-48p4 at V=21.2-22.7)
b8610 378610 2008 FT6 from PJMSO (Jan. 8.09p6)
Y9507 349507 2008 QY from CSS (Jan. 7.32-34p4)
Y7813 347813 2002 NP1 from CSS (Jan. 7.07-08p4)
W6683 326683 2002 WP from Brixiis Obs. (Jan. 5.82-83p6)
R5611 275611 1999 XX262 from MLS (Jan. 7.14-16p4)
Q2623 262623 2006 WY2 from CSS (Jan. 7.40-41p4)
O8083 248083 2004 QU24 from PS1 (Jan. 8.23-26p4)
K3471 203471 2002 AU4 from CSS (Jan. 7.34-35p4)
K2683 202683 2006 US216 from MLS (Jan. 7.07-08p4)
G8378 168378 1997 ET30 from MLS (Jan. 7.09-10p4)
G2882 162882 2001 FD58 from MLS (Jan. 7.52-53p4)
F4007 154007 2002 BY from MLS (Jan. 7.54-55p4)
F2667 152667 1998 FR11 from MLS (Jan. 7.50-51p3)
E0928 140928 2001 VG75 from CASADO (Dec. 26.75p1, 26.86p1, 26.92p1, 27.74p1, 27.86p1, 27.92p1, 29.76p1, 29.83p1, 29.92p1, 30.76p1, 30.82p1 & 30.93p1)
D8925 138925 2001 AU43 from CSS (Jan. 7.54-55p3)
99935 99935 2002 AV4 from MLS (Jan. 7.45-46p4)
96590 96590 1998 XB from The Studios Obs. (Dec. 30.74-77p2, Jan. 2.73-77p2, 2.82p1, 2.87p1, 4.77-81p2 & 4.94p1) and PJMSO (Jan. 8.11p6)
85804 85804 1998 WQ5 from The Studios Obs. (Jan. 2.75p1, 2.80p1, 2.84p1, 2.89p1, 4.78p1 & 4.93p1) and PJMSO (Jan. 8.09-10p5)
42286 42286 2001 TN41 from CASADO (Dec. 26.76p1, 26.87p1, 27.00p1, 27.75p1, 27.87p1, 27.99p1, 29.75p1, 29.82p1, 29.96p1, 30.77p1, 30.83p1 & 30.99p1)
38091 38091 1999 JT3 from MLS (Jan. 7.18-19p4)
18109 18109 2000 NG11 from MLS (Jan. 7.48-50p4)
13651 13651 1997 BR from MLS (Jan. 7.30-31p4)
09172 9172 Abhramu (1989 OB) from MLS (Jan. 7.43-44p4)
05836 5836 1993 MF from The Studios Obs. (Jan. 2.73p1, 2.78p1, 2.83p1, 2.88p1 & 4.76-80p2)
05828 5828 1991 AM from MLS (Jan. 7.32-33p4)
05653 5653 Camarillo (1992 WD5) from The Studios Obs. (Dec. 30.74-79p3, Jan. 2.72-76p2, 2.81p1 & 2.86p1)
05626 5626 1991 FE from MLS (Jan. 7.47-49p4)
04503 4503 Cleobulus (1989 WM) from MLS (Jan. 7.52-54p4)
04183 4183 Cuno (1959 LM) from MLS (Jan. 7.09-10p4)
04179 4179 Toutatis (1989 AC) from The Studios Obs. (Jan. 2.75p1, 2.79p1, 2.84-86p2, 4.76-79p2 & 4.93p1) and PJMSO (Jan. 8.13p6)
03691 3691 Bede (1982 FT) from CASADO (Dec. 26.76p1, 26.89p1, 27.04p1, 27.75p1, 27.88p1, 28.07p1, 29.78p1, 29.84p1, 29.93p1, 30.75p1, 30.84p1 & 30.95p1)
03352 3352 McAuliffe (1981 CW) from PJMSO (Jan. 8.11-12p6)
03271 3271 Ul (1982 RB) from MLS (Jan. 7.24-25p4)
02102 2102 Tantalus (1975 YA) from The Studios Obs. (Jan. 2.74p1, 2.79p1, 2.83-87p2, 4.79p1 & 4.92-94p2), Olmen Obs. (Jan. 6.77-78p4), Sabadell Obs. (Jan. 7.78-79p4), and PJMSO (Jan. 8.08p6)
01862 1862 Apollo (1932 HA) from CASADO (Dec. 29.09p1 & 29.16-20p2)
00433 433 Eros (1898 DQ) from PJMSO (Jan. 8.06p6)

Observers on 8 January '17

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

Code	Observer / observatory
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2017-A60 -- 2017 AJ13
`H21`	Astronomical Research Obs. Westfield in Illinois, 5 in MPECs 2017-A54, 2017-A59, 2017-A60, 2017-A61 & 2017-A62 -- 2017 AL13, 2017 AK13, 2017 AJ13, 2017 AH13, 2016 WV
`C77`	Bernezzo Obs. in Italy, 1 in MPEC 2017-A61 -- 2017 AK13
`B96`	Brixiis Obs. in Belgium, 1 in MPEC 2017-A54 -- 326683
`Z84`	Calar Alto Schmidt in Spain, 2 in MPECs 2017-A57 & 2017-A61 -- 2017 AK13, 2017 AF13
`G36`	CASADO in Spain, 5 in MPEC 2017-A54 -- 2016 NQ32, 42286, 140928, 3691, 1862
`160`	Castelmartini Obs. in Italy, 3 in MPECs 2017-A57, 2017-A60 & 2017-A61 -- 2017 AK13, 2017 AJ13, 2017 AF13
`703`	Catalina Sky Survey (CSS) in Arizona, 12 in MPECs 2017-A54 & 2017-A58 -- 2017 AG13, 2017 AF5, 2016 YU10, 2016 YN4, 2016 UE101, 2016 PR8, 2016 LM8, 349507, 347813, 262623, 203471, 138925
`K51`	Celado Obs. in Italy, 3 in MPECs 2017-A60, 2017-A61 & 2017-A62 -- 2017 AL13, 2017 AK13, 2017 AJ13
`K65`	Cesena Obs. in Italy, 3 in MPECs 2017-A54 & 2017-A58 -- 2017 AG13, 2016 VY5, 2016 UE101
`958`	Dax Obs. in France, 4 in MPECs 2017-A57, 2017-A58, 2017-A60 & 2017-A61 -- 2017 AK13, 2017 AJ13, 2017 AG13, 2017 AF13
`595`	Farra d'Isonzo Obs. in Italy, 3 in MPECs 2017-A54, 2017-A60 & 2017-A61 -- 2017 AK13, 2017 AJ13, 2016 YC8
`H15`	ISON New Mexico Obs. in New Mexico, 1 in MPEC 2017-A54 -- 2016 UE101
`Q62\|`	Sergio Foglia in Italy via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-A57 -- 2017 AF13
`695^`	Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 13 in MPEC 2017-A54 -- 2017 AV3, 2016 YC8, 2016 WJ8, 2016 UU4, 2016 UN5, 2016 UB42, 2016 TJ18, 2016 SG45, 2016 HV3, 2015 VO66, 2015 VL142, 2003 QH5, 2001 PT9
`K38`	M57 Obs. in Italy, 1 in MPEC 2017-A54 -- 2017 AR4
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 44 in MPECs 2017-A54, 2017-A55, 2017-A57, 2017-A58, 2017-A60, 2017-A61, 2017-A62 & 2017-A63 -- 2017 AM13, 2017 AL13, 2017 AK13, 2017 AJ13, 2017 AG13, 2017 AF3, 2017 AF13, 2017 AE3, 2016 YQ8, 2016 XT1, 2016 WL8, 2016 UN36, 2016 TD18, 2016 RO1, 2015 VL142, 2014 KZ45, 2014 AD17, 2013 FK, 2011 QP96, 2010 NT1, 2006 OS5, 2006 OH15, 2001 AO2, 1998 YM4, 1994 BB, 99935, 474554, 404108, 388838, 38091, 275611, 202683, 18109, 168378, 162882, 154007, 152667, 13651, 9172, 5828, 5626, 4503, 4183, 3271
`C23`	Olmen Obs. in Belgium, 1 in MPEC 2017-A54 -- 2102
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2017-A54, 2017-A56, 2017-A59 & 2017-A63 -- 2017 AM13, 2017 AH13, 2017 AE13, 248083
`B49`	Paus Obs. in Spain, 1 in MPEC 2017-A58 -- 2017 AG13
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPEC 2017-A54 -- 2017 AG5, 2017 AE3, 2016 NL15, 2008 UL90, 2006 UM, 96590, 85804, 378610, 4179, 3352, 2102, 433
`6581`	Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2017-A55 -- 1994 BB
`W25`	RMS Obs., 1 in MPEC 2017-A58 -- 2017 AG13
`619`	Sabadell Obs. in Spain, 1 in MPEC 2017-A54 -- 2102
`B04`	Saint-Barthelemy Obs. in Italy, 1 in MPEC 2017-A61 -- 2017 AK13
`204`	Schiaparelli Obs. in Italy, 5 in MPECs 2017-A57, 2017-A58, 2017-A60, 2017-A61 & 2017-A62 -- 2017 AL13, 2017 AK13, 2017 AJ13, 2017 AG13, 2017 AF13
`Y00`	SONEAR in Brazil, 1 in MPEC 2017-A57 -- 2017 AF13
`587`	Sormano Obs. in Italy, 1 in MPEC 2017-A61 -- 2017 AK13
`691`	Spacewatch 0.9m telescope in Arizona, 10 in MPECs 2017-A54, 2017-A57, 2017-A59, 2017-A60, 2017-A61 & 2017-A62 -- 2017 AL13, 2017 AK13, 2017 AJ13, 2017 AH13, 2017 AF3, 2017 AF13, 2016 YW7, 2016 YH8, 2015 BN509, 477491
`291`	Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2017-A54, 2017-A56 & 2017-A59 -- 2017 AH13, 2017 AE13, 2016 VV3, 2015 XY378, 2012 RG3, 2007 CA19, 2006 QT89
`I93`	St. Pardon de Conques Obs. in France, 6 in MPECs 2017-A57, 2017-A58, 2017-A60, 2017-A61, 2017-A62 & 2017-A63 -- 2017 AM13, 2017 AL13, 2017 AK13, 2017 AJ13, 2017 AG13, 2017 AF13
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 10 in MPECs 2017-A54, 2017-A55, 2017-A57, 2017-A58, 2017-A60, 2017-A61, 2017-A62 & 2017-A63 -- 2017 AT4, 2017 AR4, 2017 AM13, 2017 AL13, 2017 AK13, 2017 AJ13, 2017 AG13, 2017 AF13, 2016 YU10, 1994 BB
`926`	Tenagra II Obs. in Arizona, 3 in MPECs 2017-A55, 2017-A56 & 2017-A59 -- 2017 AH13, 2017 AE13, 1994 BB
`Z52`	The Studios Obs., 6 in MPEC 2017-A54 -- 96590, 85804, 5836, 5653, 4179, 2102
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2017-A54 -- 2016 YJ4
`C44`	Volta Obs. in Italy, 2 in MPECs 2017-A58 & 2017-A61 -- 2017 AK13, 2017 AG13

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

Impact Risk Monitoring on 8 January '17

**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

2017 AS4	NEODyS	1644	2071	1	9.34e-09	-8.62	-8.62	0	NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2017-01-05.235 to 2017-01-07.410."

2016 YC8	NEODyS	2028	R E M O V E D						-

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 January '17

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

2348	Updated Traffic Report
2159	Grabbed MPEC 2017-A60 - 2017 AJ13 - see above Grabbed MPEC 2017-A61 - 2017 AK13 - see above Grabbed MPEC 2017-A62 - 2017 AL13 - see above Grabbed MPEC 2017-A63 - 2017 AM13 - see above
2136	Grabbed MPEC 2017-A59 - 2017 AH13 - see above
2028	Noted that NEODyS has removed 2016 YC8 as an impact risk - see above
1644	Noted that NEODyS has posted 2017 AS4 as an impact risk - see above Grabbed MPEC 2017-A54 - Daily Orbit Update - see above Grabbed MPEC 2017-A55 - 1994 BB - see above Grabbed MPEC 2017-A56 - 2017 AE13 - see above Grabbed MPEC 2017-A57 - 2017 AF13 - see above Grabbed MPEC 2017-A58 - 2017 AG13 - see above

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