## Contents on 18 January '17

- Traffic Report --
*one object* - IAU Minor Planet Center
- NEOCP Activity --
*32 listings* - New MPECs --
*fifteen MPECs*

- NEOCP Activity --
- Observers --
*nineteen observers* - Impact Risk Monitoring --
*five objects* - Chronology

**Asteroid/Comet Connection (A/CC) Resources:**

- Consolidated Risk Tables - the CRT page

Of 743 risk-listed objects, 33 have had news in the last 31 days. Updated at 1637 UTC on 18 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 18 January '17

### One object reported inside ten LD

One small Solar-System body is reported inside ten lunar distances (LD) of our planet today. NHATS target **2016 YC8** comes its closest to Earth on this passage -- 9.47 LD at 0439 UTC. Next known to be coming to the neighborhood is risk-listed NHATS target **2005 VL1**, which arrives within ten LD on February 1st, and then **2013 FK** the next day.

This report was generated at 1811 UTC with second follow-up in today's DOU MPEC for departed NHATS target **2017 AF13** (9.17 days added to 2.03-day observation arc) along with astrometry from last September for **2016 SC17**.

**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 18 January '17

### 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, eight 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 18 January '17

### Minor Planet Electronic Circulars

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

- MPEC 2017-B08 time-stamped "13:02 UT" - Daily Orbit Update - see below
- MPEC 2017-B09 time-stamped "15:41 UT" - 2013 UL15 - see below
- MPEC 2017-B10 time-stamped "15:44 UT" - 2013 UM15 - see below
- MPEC 2017-B11 time-stamped "15:46 UT" - 2013 UN15 - see below
- MPEC 2017-B12 time-stamped "15:48 UT" - 2013 UO15 - see below
- MPEC 2017-B13 time-stamped "15:51 UT" - 2013 UP15 - see below
- MPEC 2017-B14 time-stamped "15:53 UT" - 2014 UD225 - see below
- MPEC 2017-B15 time-stamped "15:55 UT" - 2014 UE225 - see below
- MPEC 2017-B16 time-stamped "15:57 UT" - 2013 SP99 - see below
- MPEC 2017-B17 time-stamped "15:59 UT" - 2013 SQ99 - see below
- MPEC 2017-B18 time-stamped "16:01 UT" - 2006 QF181 - see below
- MPEC 2017-B19 time-stamped "16:24 UT" - 2017 AN20 - see below
- MPEC 2017-B20 time-stamped "18:03 UT" - Comet C/2017 A1 (Panstarrs) - see below
- MPEC 2017-B21 time-stamped "18:25 UT" - Comet C/2017 A3 (Elenin) - see below
- MPEC 2017-B22 time-stamped "20:12 UT" - 2001 QE34

#### MPEC 2017-B22 - "20:12 UT" - 2001 QE34

`K01Q34E`**2001 QE34**(H=18.7 ~616m) from Great Shefford Obs. (Jan. 18.14-15p4 & 18.81-83p3)

#### MPEC 2017-B21 - "18:25 UT" - Comet C/2017 A3 (Elenin)

`CK17A030`**C/2017 A3 (Elenin)**(i=98.6°, q=3.860 AU, Q=96.469 AU, TP=2017 Jan. 31.34400 TT) from Sergio Foglia via iTelescope Obs. Siding Spring (Jan. 13.46-47p3), ISON Siding Spring Obs. (Jan. 15.45-46p3), and B. Lutkenhoner via Slooh.com Chile Obs. (Jan. 17.11p1 & 17.17p1)

#### MPEC 2017-B20 - "18:03 UT" - Comet C/2017 A1 (Panstarrs)

`CK17A010`**C/2017 A1 (Panstarrs)**(i=49.8°, q=2.291 AU, Q=155.232 AU, TP=2017 May 17.12148 TT) from Southern Utsunomiya (Jan. 6.50-56p4) and Foglia/iTelObs-SSO (Jan. 14.60-61p3)

#### MPEC 2017-B19 - "16:24 UT" - 2017 AN20

`K17A20N`**2017 AN20**(small asteroid, Q=4.444 AU, H=22.8 ~93m) was picked up at 1234 UT on 3 Jan. by Pan-STARRS 1 (PS1), observing it at Jan. 3.52-55p3 at w=**22.2-4**. This detection was confirmed by Marco Micheli on Mauna Kea (Jan. 4.57p3) and the Spacewatch 1.8m telescope (Jan. 7.34-36p3 at R=21.9-**22.4**& 18.34-36p3 at R=20.9-21.2).

#### MPEC 2017-B18 - "16:01 UT" - 2006 QF181

`K06QI1F`**2006 QF181**(KBO, q=41.279 AU, Q=47.939 AU, H=7.0 ~135 km) from Jean-Marc Petit on Mauna Kea (2013 Aug. 5.50p1 at r=**23.1**, 2013 Aug. 5.55p1 at r=**23.2**, 2013 Aug. 8.48-52p2 at r=**23.4-5**, 2013 Aug. 31.56p1 at r=**23.9**, 2013 Sept. 1.45-50p3 at r=**23.4-7**, 2013 Sept. 5.43-47p2 at r=**23.3-4**, 2013 Sept. 29.36-40p2 at r=**23.2-4**, 2013 Sept. 29.44-50p7 at r=**23.2-7**, 2013 Oct. 5.36p1 at r=**23.5**, 2013 Oct. 6.37p1 at r=**23.2**, 2013 Oct. 6.43p1 at r=**23.2**, 2013 Oct. 7.35p1 at r=**23.4**, 2013 Oct. 9.49p1 at r=**23.4**, 2013 Nov. 27.29p1 at r=**23.5**, 2013 Nov. 27.34p1 at r=**23.6**, 2013 Dec. 5.24p1 at r=**23.4**, 2014 June 25.60p1 at r=**23.4**, 2014 June 26.60p1 at r=**23.5**, 2014 July 23.57p1 at r=**23.3**, 2014 July 27.55p1 at r=**23.5**, 2014 Aug. 24.50p1 at r=**23.4**, 2014 Aug. 28.47p1 at r=**23.4**, 2014 Oct. 23.33p1 at r=**23.3**, 2014 Oct. 27.29p1 at r=**22.9**, 2014 Nov. 24.27p1 at r=**23.2**, 2014 Nov. 25.30p1 at r=**23.1**, 2015 Jan. 17.23p1 at r=**23.3**, 2015 Aug. 20.51p1 at r=**23.4**, 2015 Oct. 12.27-28p2 at u=**23.2-25.2**, 2015 Oct. 12.33p1 at u=**24.7**, 2015 Oct. 12.43p1 at r=**23.4**, 2015 Dec. 7.40p1 at w=**23.5**& 2015 Dec. 31.23p1 at w=**23.7**)

#### MPEC 2017-B17 - "15:59 UT" - 2013 SQ99

`K13S99Q`**2013 SQ99**(KBO, q=39.718 AU, Q=48.220 AU, H=6.4 ~178 km) was picked up at 0834 UT on 29 Sept. 2013 by Petit/Mauna Kea, observing it at 2013 Aug. 5.50p1 at r=**23.1**, 2013 Aug. 5.55p1 at r=**23.0**, 2013 Aug. 8.48-51p2 at r=**23.1**, 2013 Aug. 31.56p1 at r=**23.2**, 2013 Sept. 1.45-49p2 at r=**22.8-23.1**, 2013 Sept. 5.43-46p2 at r=**22.9-23.0**, 2013 Sept. 29.36-40p2 at r=**23.1-2**, 2013 Sept. 29.44p1 at r=**23.1**, 2013 Oct. 2.43-44p2 at r=**23.0-2**, 2013 Oct. 5.32-36p3 at r=**22.5-23.0**, 2013 Oct. 6.36p1 at r=**22.9**, 2013 Oct. 6.43p1 at r=**22.9**, 2013 Oct. 7.35p1 at r=**22.4**, 2013 Oct. 9.49p1 at r=**23.0**, 2013 Nov. 27.29p1 at r=**23.2**, 2013 Nov. 27.34p1 at r=**23.3**, 2014 June 25.60p1 at r=**23.2**, 2014 June 26.60p1 at r=**23.2**, 2014 July 23.57p1 at r=**23.2**, 2014 July 27.55p1 at r=**23.1**, 2014 Aug. 22.53-54p2 at u=**25.0-2**, 2014 Aug. 24.50p1 at r=**23.3**, 2014 Aug. 28.47p1 at r=**23.1**, 2014 Aug. 29.62p1, 2014 Oct. 23.32-33p2 at r=**23.0-2**, 2014 Oct. 27.29p2 at r=**23.1-2**, 2014 Nov. 24.27-28p2 at r=**23.2-3**, 2014 Nov. 25.30p2 at r=**23.2**, 2014 Dec. 17.34p2 at r=**23.2-3**, 2015 Jan. 17.23p1 at r=**23.2**, 2015 Oct. 12.27p1 at r=**23.0**, 2015 Oct. 12.36p1 at r=**23.0**, 2015 Oct. 12.43p1 at r=**23.0**, 2015 Dec. 7.40p1 at w=**23.2**, and 2015 Dec. 31.23p1 at w=**23.3**.

#### MPEC 2017-B16 - "15:57 UT" - 2013 SP99

`K13S99P`**2013 SP99**(KBO, q=41.075 AU, Q=46.098 AU, H=7.3 ~117 km) was picked up at 0828 UT on 29 Sept. 2013 by Petit/Mauna Kea, observing it at 2013 Aug. 5.49p1 at r=**23.6**, 2013 Aug. 5.54-55p2 at r=**23.3-6**, 2013 Aug. 8.47-51p2 at r=**23.7**, 2013 Aug. 31.56p1 at r=**23.4**, 2013 Sept. 1.44p1 at r=**23.3**, 2013 Sept. 5.42-46p2 at r=**23.4**, 2013 Sept. 29.35-39p2 at r=**23.3-6**, 2013 Sept. 29.44p1 at r=**23.4**, 2013 Oct. 2.43p1 at r=**23.2**, 2013 Oct. 7.35p1 at r=**23.7**, 2013 Oct. 9.48p1 at r=**23.3**, 2013 Nov. 27.28p1 at r=**23.5**, 2013 Nov. 27.33p1 at r=**23.4**, 2013 Dec. 5.24p1 at r=**23.4**, 2014 July 23.57p1 at r=**23.6**, 2014 July 27.55p1 at r=**23.7**, 2014 Aug. 22.62p1 at r=**23.5**, 2014 Aug. 24.49p1 at r=**23.6**, 2014 Aug. 28.46p1, 2014 Oct. 23.30p2 at r=**23.4-5**, 2014 Oct. 27.27p2 at r=**23.2-4**, 2014 Oct. 29.27p1 at r=**23.5**, 2014 Oct. 29.32p1 at r=**23.3**, 2014 Nov. 24.26-27p2 at r=**23.4-5**, 2014 Nov. 25.25p1 at r=**23.4**, 2014 Nov. 25.29p1 at r=**23.6**, 2015 Aug. 20.53p1 at r=**23.5**, and 2015 Dec. 7.37p1 at w=**23.7**.

#### MPEC 2017-B15 - "15:55 UT" - 2014 UE225

`K14UM5E`**2014 UE225**(KBO, q=40.453 AU, Q=46.596 AU, H=6.2 ~195 km) was picked up at 0949 UT on 22 Oct. 2014 by Petit/Mauna Kea, observing it at 2013 Aug. 8.53-54p2 at r=**22.8**, 2013 Aug. 8.59p1 at r=**22.8**, 2013 Sept. 1.51-55p2 at r=**22.7-8**, 2013 Sept. 2.50p1 at r=**22.8**, 2013 Sept. 2.55p1 at r=**22.7**, 2013 Sept. 29.52p1 at r=**22.7**, 2013 Oct. 3.49p1 at r=**22.7**, 2013 Oct. 4.59p1 at r=**22.7**, 2013 Oct. 9.39p1 at r=**22.8**, 2013 Oct. 29.45p1 at r=**22.7**, 2013 Oct. 30.37p1 at r=**22.5**, 2013 Oct. 31.36p1 at r=**22.7**, 2013 Nov. 1.30-34p2 at r=**22.8-9**, 2013 Nov. 1.43p1 at r=**22.8**, 2013 Nov. 27.35p1 at r=**22.7**, 2013 Dec. 3.29p1 at r=**22.9**, 2013 Dec. 4.34p1 at r=**22.9**, 2013 Dec. 29.23p1 at r=**22.9**, 2014 July 25.50-54p2 at r=**22.8**, 2014 July 25.58p1 at r=**22.8**, 2014 Aug. 23.54p1 at r=**22.8**, 2014 Aug. 23.59p1 at r=**22.8**, 2014 Aug. 25.54-56p3 at u=**25.0-5**, 2014 Aug. 27.43p1 at r=**23.0**, 2014 Aug. 27.53p1 at r=**22.8**, 2014 Sept. 18.36p1 at r=**22.6**, 2014 Sept. 18.41p1 at r=**22.6**, 2014 Sept. 23.45p1 at r=**22.8**, 2014 Oct. 22.41-49p3 at r=**22.6-7**, 2014 Oct. 23.40p1 at r=**22.7**, 2014 Oct. 25.27p1 at r=**22.6**, 2014 Nov. 19.21p1 at r=**22.7**, 2014 Nov. 19.35p1 at r=**22.8**, 2014 Nov. 21.19-20p2 at r=**22.6-8**, 2014 Nov. 21.36p1 at r=**22.8**, 2015 Jan. 28.25p1 at r=**22.8**, 2015 Feb. 18.23p1 at r=**22.8**, 2015 Sept. 15.52p2 at w=**23.0-1**, 2015 Sept. 15.57-58p2 at w=**23.0**, 2015 Oct. 9.44p1 at w=**23.0**, 2015 Oct. 9.49p1 at w=**23.0**, 2015 Oct. 13.48p1, and 2015 Oct. 13.55p1.

#### MPEC 2017-B14 - "15:53 UT" - 2014 UD225

`K14UM5D`**2014 UD225**(KBO, q=37.542 AU, Q=48.790 AU, H=6.7 ~155 km) was picked up at 0949 UT on 22 Oct. 2014 by Petit/Mauna Kea, observing it at 2013 Aug. 8.53p1 at r=**23.3**, 2013 Sept. 1.51-55p2 at r=**23.1-2**, 2013 Sept. 2.50p1 at r=**23.1**, 2013 Sept. 2.55p1 at r=**23.1**, 2013 Sept. 29.52p1 at r=**23.2**, 2013 Oct. 3.49p1 at r=**23.1**, 2013 Oct. 4.59p1 at r=**22.9**, 2013 Oct. 9.39p1 at r=**23.1**, 2013 Oct. 29.45p1 at r=**23.1**, 2013 Oct. 30.37p1 at r=**23.1**, 2013 Oct. 31.36p1 at r=**23.0**, 2013 Nov. 1.30-34p2 at r=**23.0-1**, 2013 Nov. 1.43p1 at r=**22.9**, 2013 Nov. 27.35p1 at r=**23.1**, 2013 Dec. 3.29p1 at r=**23.3**, 2013 Dec. 4.34p1 at r=**22.9**, 2013 Dec. 29.23p1 at r=**23.1**, 2014 July 25.50-54p2 at r=**22.8-9**, 2014 July 25.58p1 at r=**23.0**, 2014 Aug. 23.54p1 at r=**23.1**, 2014 Aug. 23.59p1 at r=**23.0**, 2014 Aug. 25.55p2 at u=**24.7-25.4**, 2014 Aug. 27.43p1 at r=**23.0**, 2014 Aug. 27.53p1 at r=**23.0**, 2014 Sept. 18.36p1 at r=**23.0**, 2014 Sept. 18.41p1 at r=**23.1**, 2014 Sept. 23.45p1 at r=**22.9**, 2014 Oct. 22.41-49p3 at r=**23.0-1**, 2014 Oct. 23.40p1 at r=**23.0**, 2014 Oct. 25.27p1 at r=**23.1**, 2014 Nov. 19.21p1 at r=**23.2**, 2014 Nov. 19.35p1 at r=**23.1**, 2014 Nov. 21.19-20p2 at r=**23.0-2**, 2014 Nov. 21.36p1 at r=**23.0**, 2015 Jan. 28.25p1 at r=**22.9**, 2015 Feb. 18.23p1 at r=**23.3**, 2015 Sept. 15.52p2 at w=**23.3-4**, 2015 Sept. 15.57-58p2 at w=**23.3-4**, 2015 Oct. 9.44p1 at w=**23.3**, 2015 Oct. 9.49p1 at w=**23.3**, 2015 Oct. 13.48-49p2, 2015 Oct. 13.55p1, and 2015 Dec. 7.44-46p2 at w=**23.4**.

#### MPEC 2017-B13 - "15:51 UT" - 2013 UP15

`K13U15P`**2013 UP15**(KBO, q=42.901 AU, Q=49.868 AU, H=7.5 ~107 km) was picked up at 0612 UT on 31 Oct. 2013 by Petit/Mauna Kea, observing it at 2013 Aug. 30.45-46p2 at r=**23.6-24.0**, 2013 Aug. 31.46p1 at r=**23.6**, 2013 Aug. 31.52p1 at r=**23.4**, 2013 Sept. 4.44p1 at r=**23.9**, 2013 Sept. 4.51p1 at r=**23.8**, 2013 Oct. 6.42p1 at r=**24.0**, 2013 Oct. 9.55p1 at r=**23.8**, 2013 Oct. 31.26p1 at r=**23.5**, 2013 Oct. 31.30p1 at r=**23.7**, 2013 Oct. 31.34p1 at r=**23.6**, 2013 Nov. 1.29p1 at r=**24.0**, 2013 Nov. 1.41p1 at r=**23.8**, 2013 Nov. 5.46p1 at r=**23.8**, 2013 Dec. 4.28p1 at r=**24.1**, 2013 Dec. 4.33p1 at r=**24.3**, 2013 Dec. 6.22p1 at r=**24.0**, 2014 June 27.61p1 at r=**23.9**, 2014 June 29.59p1 at r=**23.8**, 2014 July 24.57p1 at r=**23.8**, 2014 July 27.60p1 at r=**23.9**, 2014 Aug. 24.51p1 at r=**23.4**, 2014 Aug. 28.49p1 at r=**23.8**, 2014 Aug. 29.53p1 at r=**24.0**, 2014 Aug. 29.61p1 at r=**23.8**, 2014 Oct. 23.28p1 at r=**23.7**, 2014 Oct. 23.34p1 at r=**23.7**, 2014 Oct. 23.39p2 at r=**24.0-1**, 2014 Oct. 25.26p1 at r=**23.7**, 2014 Oct. 25.35-36p2 at r=**23.7-9**, 2014 Oct. 25.46p1 at r=**24.0**, 2014 Oct. 27.25p1 at r=**23.5**, 2014 Oct. 27.31p1 at r=**23.8**, 2014 Oct. 27.37p1 at r=**23.8**, 2014 Oct. 29.26p1 at r=**23.8**, 2014 Nov. 24.24p1 at r=**23.8**, 2014 Nov. 25.24p1 at r=**24.3**, 2014 Dec. 17.25p1 at r=**24.1**, 2015 Jan. 17.24p1 at r=**23.8**, 2015 Aug. 20.51p1 at r=**23.8**, 2015 Oct. 15.30-31p2 at r=**23.4-5**, 2015 Oct. 15.35-36p2 at r=**23.4-5**, and 2015 Dec. 7.38p1 at w=**24.0**.

#### MPEC 2017-B12 - "15:48 UT" - 2013 UO15

`K13U15O`**2013 UO15**(KBO, q=40.913 AU, Q=45.365 AU, H=6.9 ~141 km) was picked up at 0612 UT on 31 Oct. 2013 by Petit/Mauna Kea, observing it at 2013 Aug. 2.54p1 at r=**23.4**, 2013 Aug. 2.58p1 at r=**23.3**, 2013 Aug. 30.45-46p2 at r=**22.8-9**, 2013 Aug. 31.46p1 at r=**23.2**, 2013 Aug. 31.52p1 at r=**23.2**, 2013 Oct. 6.42p1 at r=**23.1**, 2013 Oct. 31.26p1 at r=**23.2**, 2013 Oct. 31.30p1 at r=**23.2**, 2013 Oct. 31.34p1 at r=**23.2**, 2013 Nov. 1.29p1 at r=**23.1**, 2013 Nov. 1.41p1 at r=**23.2**, 2014 June 27.61p1 at r=**23.4**, 2014 June 28.61p1 at r=**23.0**, 2014 July 24.56p1 at r=**23.3**, 2014 July 27.59p1 at r=**23.4**, 2014 Aug. 22.56p1 at r=**23.3**, 2014 Aug. 28.42p1 at r=**23.5**, 2014 Nov. 24.28p1 at r=**23.5**, 2014 Nov. 25.31p1 at r=**23.3**, 2014 Dec. 17.26p1 at r=**23.7**, 2015 Jan. 17.24p1 at r=**23.4**, and 2015 Dec. 7.39p1 at w=**23.3**.

#### MPEC 2017-B11 - "15:46 UT" - 2013 UN15

`K13U15N`**2013 UN15**(KBO, q=42.436 AU, Q=47.425 AU, H=7.4 ~112 km) was picked up at 0600 UT on 31 Oct. 2013 by Petit/Mauna Kea, observing it at 2013 Aug. 2.53p1 at r=**24.0**, 2013 Aug. 2.57p1 at r=**24.2**, 2013 Aug. 30.44p1 at r=**23.8**, 2013 Aug. 31.45p1 at r=**23.9**, 2013 Aug. 31.49-51p2 at r=**23.9-24.1**, 2013 Sept. 4.43p1 at r=**23.9**, 2013 Sept. 4.47-52p5 at r=**23.7-24.1**, 2013 Oct. 6.41p1 at r=**23.6**, 2013 Oct. 6.49-50p2 at r=**23.4-6**, 2013 Oct. 9.54p1 at r=**23.7**, 2013 Oct. 31.25p1 at r=**24.0**, 2013 Oct. 31.29p1 at r=**23.3**, 2013 Oct. 31.34p1 at r=**23.5**, 2013 Nov. 1.28p1 at r=**24.1**, 2013 Nov. 1.40p1 at r=**24.4**, 2013 Nov. 5.45p1 at r=**23.7**, 2013 Nov. 29.32p1 at r=**24.0**, 2013 Dec. 4.27p1 at r=**23.5**, 2013 Dec. 4.32p1 at r=**24.2**, 2014 June 27.60p1 at r=**23.9**, 2014 June 28.60p1 at r=**24.1**, 2014 July 24.56p1 at r=**23.8**, 2014 Aug. 22.56p1 at r=**23.9**, 2014 Aug. 29.53p1 at r=**24.3**, 2014 Aug. 29.61p1 at r=**24.0**, 2014 Oct. 23.36p1 at r=**23.4**, 2014 Oct. 27.40p1 at r=**23.6**, 2014 Nov. 24.24p1 at r=**23.7**, 2014 Nov. 25.24p1 at r=**23.6**, 2014 Dec. 17.25p1 at r=**23.7**, 2015 Jan. 17.24p1 at r=**24.0**, 2015 Aug. 20.51p1 at r=**23.7**, 2015 Oct. 15.30-31p2 at r=**23.6-7**, 2015 Oct. 15.35-36p2 at r=**23.3-4**, and 2015 Dec. 7.38p1 at w=**24.3**.

#### MPEC 2017-B10 - "15:44 UT" - 2013 UM15

`K13U15M`**2013 UM15**(KBO, q=41.476 AU, Q=48.210 AU, H=6.9 ~141 km) was picked up at 0600 UT on 31 Oct. 2013 by Petit/Mauna Kea, observing it at 2013 Aug. 2.53p1 at r=**23.3**, 2013 Aug. 2.57p1 at r=**23.7**, 2013 Aug. 30.44p1 at r=**23.1**, 2013 Aug. 31.45p1 at r=**23.2**, 2013 Aug. 31.49-51p2 at r=**23.2-3**, 2013 Sept. 4.43p1 at r=**23.5**, 2013 Sept. 4.47-52p5 at r=**23.0-6**, 2013 Oct. 6.41p1 at r=**23.3**, 2013 Oct. 6.49-50p2 at r=**23.2**, 2013 Oct. 9.54p1 at r=**23.1**, 2013 Oct. 31.25p1 at r=**23.2**, 2013 Oct. 31.29p1 at r=**23.4**, 2013 Oct. 31.34p1 at r=**23.3**, 2013 Nov. 1.28p1 at r=**23.3**, 2013 Nov. 1.40p1 at r=**23.4**, 2013 Nov. 5.45p1 at r=**23.3**, 2013 Dec. 4.27p1 at r=**23.4**, 2013 Dec. 4.32p1, 2014 June 27.60p1 at r=**23.5**, 2014 June 28.60p1 at r=**23.5**, 2014 July 24.56p1 at r=**23.3**, 2014 Aug. 22.56p1 at r=**23.4**, 2014 Aug. 28.43p1 at r=**23.4**, 2014 Aug. 29.53-57p2 at u=**23.4-25.1**, 2014 Aug. 29.61p1 at r=**23.3**, 2014 Oct. 23.36p1 at r=**23.3**, 2014 Oct. 27.40p1 at r=**23.1**, 2014 Nov. 24.24p1 at r=**23.3**, 2014 Nov. 25.24p1 at r=**23.5**, 2014 Dec. 17.26p1 at r=**23.3**, 2015 Jan. 17.30p1 at r=**23.4**, 2015 Oct. 15.30-31p2 at r=**23.2-3**, 2015 Oct. 15.35-36p2 at r=**23.1-2**, and 2015 Dec. 7.38p1 at w=**23.6**.

#### MPEC 2017-B09 - "15:41 UT" - 2013 UL15

`K13U15L`**2013 UL15**(KBO, q=41.200 AU, Q=49.957 AU, H=6.7 ~155 km) was picked up at 0526 UT on 31 Oct. 2013 by Petit/Mauna Kea, observing it at 2013 Aug. 2.50p1 at r=**23.1**, 2013 Aug. 2.55p1 at r=**23.1**, 2013 Aug. 11.50p1 at r=**23.0**, 2013 Aug. 30.42p1 at r=**23.0**, 2013 Aug. 31.42p1 at r=**22.8**, 2013 Aug. 31.47p1 at r=**22.9**, 2013 Sept. 4.40p1 at r=**23.0**, 2013 Sept. 4.45p1 at r=**22.9**, 2013 Oct. 5.37-38p2 at r=**22.9**, 2013 Oct. 6.38p1 at r=**22.9**, 2013 Oct. 6.44p1 at r=**22.7**, 2013 Oct. 9.50-51p2 at r=**22.8-9**, 2013 Oct. 31.23p1 at r=**22.9**, 2013 Oct. 31.27p1 at r=**23.2**, 2013 Oct. 31.31p1 at r=**23.0**, 2013 Nov. 1.25p1 at r=**23.2**, 2013 Nov. 1.37p1 at r=**22.8**, 2013 Nov. 2.20-29p5 at r=**23.1-5**, 2013 Nov. 5.26p1 at r=**22.9**, 2013 Nov. 5.38p1, 2013 Nov. 6.35p1 at r=**22.6**, 2013 Nov. 6.40p2 at r=**22.7**, 2013 Nov. 7.44p1 at r=**22.7**, 2013 Nov. 29.22p1 at r=**23.2**, 2013 Dec. 4.24p1 at r=**22.9**, 2013 Dec. 4.29p1 at r=**22.5**, 2013 Dec. 5.32p1 at r=**22.9**, 2014 June 27.57p1 at r=**23.3**, 2014 June 28.58p1 at r=**23.1**, 2014 July 23.55p1 at r=**23.4**, 2014 July 27.53p1 at r=**23.2**, 2014 Aug. 28.45p1 at r=**22.8**, 2014 Oct. 23.28p1 at r=**22.9**, 2014 Oct. 23.33p1 at r=**22.8**, 2014 Oct. 23.38p1 at r=**22.9**, 2014 Oct. 25.25p1 at r=**22.9**, 2014 Oct. 25.35-36p2 at r=**22.8-9**, 2014 Oct. 25.46p1 at r=**22.9**, 2014 Oct. 27.24p1 at r=**23.2**, 2014 Oct. 27.30p1 at r=**23.1**, 2014 Oct. 27.37p1 at r=**22.9**, 2014 Oct. 29.26p1 at r=**22.8**, 2014 Nov. 19.27p1 at r=**23.0**, 2014 Dec. 17.32p1 at r=**22.8**, and 2015 Jan. 17.26p1 at r=**22.9**.

#### << DOU on 18 Jan. '17 >> MPEC 2017-B08 - "13:02 UT" - Daily Orbit Update

- Observations of risk-listed objects
`K17A04M`**2017 AM4**(i=59.9°, arc=15 days, H=19.0 ~537m) from Spacewatch 1.8m (Jan. 18.29p3)- Observations of close-passing objects
`K17A13F`**2017 AF13**(arc=11 days, H=26.5 ~17m,*NHATS target*) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Jan. 18.29-31p3) and Spacewatch 1.8m (Jan. 18.41-42p2)`K16S17C`**2016 SC17**(arc=6 days, H=25.4 ~28m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2016 Sept. 30.57-58p2 at G=**22.4**)- Observation campaigns (NHATS targets, radar support)
`l4163`**474163 1999 SO5**(NHATS) from PS1 (Jan. 18.23-26p4)`Q5482`**265482 2005 EE**(NHATS) from LCOGT Cerro Tololo B (Jan. 17.34-36p8)

-- NHATS target table & ephemerides- Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
`K17A03F`**2017 AF3**(arc=15 days, H=25.3 ~29m) from Holmes/CTIO (Jan. 18.10-12p3)`K16Y03J`**2016 YJ3**(arc=26 days, H=23.2 ~78m) from Holmes/CTIO (Jan. 18.18-20p3 at V=22.0-**22.3**)`K16W08X`**2016 WX8**(Q=5.849 AU, arc=55 days, H=22.4 ~112m) from Holmes/CTIO (Jan. 18.21-23p3)`K17A13Z`**2017 AZ13**(arc=14 days, H=21.8 ~148m) from Sandlot Obs. (Jan. 18.26-28p3)- Observations of other objects
`K17A13Y`**2017 AY13**(arc=15 days, H=21.4 ~178m) from Holmes/CTIO (Jan. 18.34-35p3) and Spacewatch 1.8m (Jan. 18.40-41p3)`K17A05F`**2017 AF5**(q=0.126 AU, Q=4.792 AU, arc=13 days, H=17.6 ~1.02 km) from M. Kumrucu-Lohmiller via Slooh.com Canary Islands Obs. (Jan. 17.18-22p3) and Northolt Branch Obs. (Jan. 17.94-95p3)`K17A04K`**2017 AK4**(arc=15 days, H=21.4 ~178m) from Holmes/CTIO (Jan. 18.12-14p3)`K17A03V`**2017 AV3**(i=36.5°, arc=16 days, H=19.5 ~426m) from Holmes/CTIO (Jan. 18.15-16p3 at V=22.0-**22.2**)`K16Y07X`**2016 YX7**(arc=27 days, H=21.3 ~186m) from Holmes/CTIO (Jan. 18.29p3)`K16X01H`**2016 XH1**(arc=55 days, H=20.4 ~282m) from Holmes/CTIO (Jan. 18.06-07p3)`K16X01D`**2016 XD1**(arc=46 days, H=19.2 ~490m) from Big Water Obs. (Jan. 18.08-09p2)`K16W09X`**2016 WX9**(arc=52 days, H=20.2 ~309m) from Holmes/CTIO (Jan. 18.32-33p3)`K16W09S`**2016 WS9**(arc=62 days, H=19.0 ~537m) from Holmes/CTIO (Jan. 18.34p3)`K16W03U`**2016 WU3**(arc=56 days, H=20.4 ~282m) from Holmes/CTIO (Jan. 18.13-14p3)`K16Q11N`**2016 QN11**(arc=145 days, H=20.8 ~234m) from Northolt Branch Obs. (Jan. 17.90-92p3)`K14J25M`**2014 JM25**(arc=2 opp, H=21.4 ~178m) from Ovidiu Vaduvescu via La Palma (2016 April 20.24p2)`K14A17D`**2014 AD17**(arc=2 opp, H=20.2 ~309m) from the Catalina Sky Survey (CSS) (Jan. 18.44-46p4)`k9634`**469634 2004 SZ19**from PS1 (Jan. 18.23-26p3 at w=22.0-**22.3**)`K3471`**203471 2002 AU4**from Alto Turia Obs. (Jan. 17.83-90p4)`B5052`**115052 2003 RD6**from PS1 (Jan. 18.23-26p4)`40263`**40263 1999 FQ5**from PS1 (Jan. 18.27-29p2)`34613`**34613 2000 UR13**from CSS (Jan. 18.44-45p4)`22753`**22753 1998 WT**from CSS (Jan. 18.44-46p4)`13651`**13651 1997 BR**from CSS (Jan. 18.44-46p4)`05693`**5693 1993 EA**from SONEAR (Jan. 18.21p3)

## Observers on 18 January '17

Nineteen observers appear in today's MPECs.

Code | Observer / observatory |
---|---|

J57 | Alto Turia Obs. in Spain, 1 in MPEC 2017-B08 -- 203471 |

V03 | Big Water Obs. in Utah, 1 in MPEC 2017-B08 -- 2016 XD1 |

703 | Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2017-B08 -- 2014 AD17, 34613, 22753, 13651 |

807| | Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPEC 2017-B08 -- 2017 AY13, 2017 AV3, 2017 AK4, 2017 AF3, 2017 AF13, 2016 YX7, 2016 YJ3, 2016 XH1, 2016 WX9, 2016 WX8, 2016 WU3, 2016 WS9 |

J95 | Great Shefford Obs. in England, 1 in MPEC 2017-B22 -- 2001 QE34 |

Q60 | ISON Siding Spring Obs. in New South Wales, 1 in MPEC 2017-B21 -- C/2017 A3 |

Q62| | Sergio Foglia in Italy via iTelescope Obs. Siding Spring in New South Wales, 2 in MPECs 2017-B20 & 2017-B21 -- C/2017 A3, C/2017 A1 |

950. | Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2017-B08 -- 2014 JM25 |

W86 | LCOGT Cerro Tololo B in Chile, 1 in MPEC 2017-B08 -- 265482 |

568@ | Jean-Marc Petit on Mauna Kea in Hawaii, 10 in MPECs 2017-B09, 2017-B10, 2017-B11, 2017-B12, 2017-B13, 2017-B14, 2017-B15, 2017-B16, 2017-B17 & 2017-B18 -- 2014 UE225, 2014 UD225, 2013 UP15, 2013 UO15, 2013 UN15, 2013 UM15, 2013 UL15, 2013 SQ99, 2013 SP99, 2006 QF181 |

568_ | Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2017-B19 -- 2017 AN20 |

Z80 | Northolt Branch Obs. in England, 2 in MPEC 2017-B08 -- 2017 AF5, 2016 QN11 |

F51 | Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2017-B08 & 2017-B19 -- 2017 AN20, 474163, 469634, 40263, 115052 |

H36 | Sandlot Obs. in Kansas, 1 in MPEC 2017-B08 -- 2017 AZ13 |

G40! | M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2017-B08 -- 2017 AF5 |

W883 | B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 1 in MPEC 2017-B21 -- C/2017 A3 |

Y00 | SONEAR in Brazil, 1 in MPEC 2017-B08 -- 5693 |

Q21 | Southern Utsunomiya in Japan, 1 in MPEC 2017-B20 -- C/2017 A1 |

291 | Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2017-B08 & 2017-B19 -- 2017 AY13, 2017 AN20, 2017 AM4, 2017 AF13 |

T12 | UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2017-B08 -- 2016 SC17 |

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

## Impact Risk Monitoring on 18 January '17

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 AP4 | NEODyS | 1630 | 2115 | 1 | 4.31e-07 | -7.67 | -7.67 | 0 | NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2017-01-04.487 to 2017-01-09.349." |

2017 AM4 | NEODyS | 1630 | 2024-2052 | 2 | 1.11e-06 | -1.77 | -1.77 | 0 | NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2017-01-03.522 to 2017-01-09.314." |

2017 AK3 | NEODyS | 1630 | 2048-2082 | 4 | 1.69e-07 | -6.67 | -7.02 | 0 | NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2017-01-02.469 to 2017-01-17.432." |

2016 WQ1 | NEODyS | 1630 | 2059-2103 | 2 | 7.85e-08 | -8.86 | -8.86 | 0 | NEODyS: "Based on 61 optical observations (of which 1 are rejected as outliers) from 2016-11-20.409 to 2016-12-24.446." |

2016 TB57 | NEODyS | 1630 | 2088-2116 | 14 | 2.35e-06 | -6.64 | -6.91 | 0 | NEODyS: "Based on 121 optical observations (of which 2 are rejected as outliers) from 2016-09-12.527 to 2016-12-24.652." |

**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 18 January '17

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

2110 | Grabbed MPEC 2017-B22 - 2001 QE34 - see above |

1835 | Grabbed MPEC 2017-B20 - Comet C/2017 A1 (Panstarrs) - see above Grabbed MPEC 2017-B21 - Comet C/2017 A3 (Elenin) - see above |

1811 | Generated Traffic Report |

1630 | Noted that NEODyS has updated its 2016 TB57 risk assessment - see above Noted that NEODyS has updated its 2016 WQ1 risk assessment - see above Noted that NEODyS has updated its 2017 AK3 risk assessment - see above Noted that NEODyS has updated its 2017 AM4 risk assessment - see above Noted that NEODyS has updated its 2017 AP4 risk assessment - see above Grabbed MPEC 2017-B08 - Daily Orbit Update - see above Grabbed MPEC 2017-B09 - 2013 UL15 - see above Grabbed MPEC 2017-B10 - 2013 UM15 - see above Grabbed MPEC 2017-B11 - 2013 UN15 - see above Grabbed MPEC 2017-B12 - 2013 UO15 - see above Grabbed MPEC 2017-B13 - 2013 UP15 - see above Grabbed MPEC 2017-B14 - 2014 UD225 - see above Grabbed MPEC 2017-B15 - 2014 UE225 - see above Grabbed MPEC 2017-B16 - 2013 SP99 - see above Grabbed MPEC 2017-B17 - 2013 SQ99 - see above Grabbed MPEC 2017-B18 - 2006 QF181 - see above Grabbed MPEC 2017-B19 - 2017 AN20 - see above |