Contents  on 9 January '20

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 9 January '20

Sixteen objects reported inside ten LD

There are sixteen transient natural objects reported within ten lunar distances (LD) of our planet today. Nearest is 2020 AT1, which comes its closest to Earth this time around, reaching 2.47 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
0.85 LD Jan. 2 2020 AP1 4 m  7.81 to 9.02 LD Dec. 25 - tomorrow intruder, NHATS target
2.08 LD Jan. 2 2020 AC1 7 m  8.67 to 10.03 LD Dec. 26 - today NHATS target, exits ten LD, risk
2.47 LD today 2020 AT1 11 m  2.47 LD Jan. 2 - 16 NHATS target, Earth closest at 1155 UTC
3.27 LD Jan. 4 2019 YB4 15 m  7.00 to 8.24 LD Dec. 28 - Jan. 11 NHATS target
3.37 LD Jan. 2 2020 AC 16 m  9.28 to 10.49 LD Dec. 26 - today NHATS target, exits ten LD
3.71 LD tomorrow 2019 YF4 14 m  3.72 from 3.82 LD Dec. 27 - Jan. 25 NHATS target - DOU
3.8   LD Jan. 12* 2020 AB2 14 m  6.5 from 8.0 LD Jan. 7 - 18 EPU +/- 10 mins.*, NHATS target
4.13 LD Jan. 6 2020 AU1 17 m  5.88 to 6.95 LD Dec. 30 - Jan. 12
4.76 LD Jan. 6 2020 AW 6 m  5.52 to 6.06 LD Dec. 27 - Jan. 15 NHATS target, risk
6.20 LD tomorrow 2020 AL2 26 m  6.36 from 9.35 LD yesterday - Jan. 11
6.33 LD Jan. 11 2019 WC5 104 m  7.32 from 9.13 LD yesterday - Jan. 13
6.5   LD Jan. 13* 2020 AE1 11 m  7.4 from 7.8 LD Jan. 5 - 21 EPU +/- 1.28 hours*, NHATS target
6.86 LD Jan. 16 2019 YD3 21 m  9.67 from 10.48 LD today - Jan. 22 NHATS target, enters ten LD
6.91 LD yesterday 2020 AR1 12 m  7.11 to 7.90 LD Jan. 4 - 11 risk
7.23 LD Jan. 7 2020 AV1 21 m  8.54 to 10.24 LD Jan. 4 - 9 exits ten LD
8.2   LD Jan. 16* 2020 AZ1 16 m  9.8 from 10.4 LD today - Jan. 22 EPU +/- 5 mins.*, NHATS target, enters ten LD
* EPU = Earth passage uncertainty

This report was generated at 1942 UTC with the discovery of approaching 2020 AX2 (MPEC) and with follow-up in today's DOU MPEC for inbound 2019 YF4 and four departed objects: 2020 AN1, 2019 YA1, and risk-listed 2019 YW2 and 2019 YV1.

Approaching - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
8.51 LD Jan. 12 2020 AO1 62 m  14.04 from 17.38 LD Jan. 11 - 14 risk
9.93 LD Jan. 13 2020 AX2 28 m  11.20 from 11.99 LD Jan. 12 - 14 NEW - MPEC
9.08 LD Jan. 17 2020 AD1 18 m  12.13 from 12.85 LD Jan. 13 - 22 NHATS target
9.31 LD Jan. 14 2020 AO 46 m  22.81 from 26.88 LD Jan. 13 - 15

Please check out our new "Earth's Busy Neighborhood" page with much more info about close-passing objects.



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. Object temporal 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 9 January '20

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of 30 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 9 January '20

Minor Planet Electronic Circulars

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


MPEC 2020-A109 - "19:48 UT" - Comet P/2019 Y3 (Catalina)


MPEC 2020-A108 - "16:59 UT" - 2020 AC3


MPEC 2020-A107 - "16:53 UT" - 2020 AB3


MPEC 2020-A106 - "16:45 UT" - 2020 AA3


<< OOC on 9 January '20 -- MPEC 2020-A105 - "16:05 UT" - Observations and Orbits of Comets and A/ Objects


MPEC 2020-A104 - "15:37 UT" - 2020 AZ2


MPEC 2020-A103 - "15:16 UT" - 2020 AY2


MPEC 2020-A102 - "15:12 UT" - 2020 AX2


<< DOU on 9 January '20 >>  MPEC 2020-A101 - "12:00 UT" - Daily Orbit Update

Observers  on 9 January '20

A total of 129 observers appear in today's MPECs.

CodeObserver / observatory
L2729PREMOTE Obs., 7 in MPEC 2020-A105 -- P/2019 Y2, 2019 S4, 2019 G2, C/2017 T2, 124P, 2I, 29P
349Ageo Obs. in Japan, 22 in MPEC 2020-A105 -- C/2019 Y1, C/2019 N1, C/2019 L3, C/2019 K5, C/2018 N2, C/2018 DO4, C/2017 T2, C/2017 B3, C/2016 M1, 392P, 385P, 261P, 203P, 173P, 160P, 155P, 114P, 101P, 88P, 78P, 76P, 2I
C97Al-Fulaij Obs., 1 in MPEC 2020-A105 -- 29P
K40Altdorf Obs. in Germany, 3 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 114P
E23Arcadia Obs. in New South Wales, 1 in MPEC 2020-A105 -- C/2019 Y1
Z25Artemis Obs., 1 in MPEC 2020-A105 -- 2I
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPECs 2020-A102, 2020-A103, 2020-A106 & 2020-A108 -- 2020 AY2, 2020 AX2, 2020 AC3, 2020 AA3
T05ATLAS Haleakala in Hawaii, 16 in MPEC 2020-A105 -- P/2019 Y2, C/2019 Y1, C/2019 K5, C/2018 N2, C/2018 DO4, C/2017 B3, C/2016 M1, C/2011 KP36, C/2010 U3, 384P, 260P, 173P, 124P, 88P, 78P, 68P
T08ATLAS Mauna Loa in Hawaii, 27 in MPEC 2020-A105 -- P/2019 Y2, C/2019 Y1, P/2019 T6, C/2019 K5, C/2019 F1, C/2018 N2, C/2018 DO4, C/2018 A3, C/2017 B3, C/2016 X1, C/2016 M1, C/2015 O1, C/2011 KP36, C/2010 U3, 384P, 266P, 260P, 246P, 203P, 173P, 159P, 124P, 117P, 114P, 88P, 78P, 29P
I47Auger Obs. in Argentina, 4 in MPEC 2020-A105 -- P/2019 Y2, C/2019 Y1, C/2016 N6, 2I
L57Bacau Obs., 1 in MPEC 2020-A105 -- 123P
L54Berthelot Obs., 4 in MPEC 2020-A105 -- 114P, 112P, 101P, 2I
C86Blanes Obs. in Spain, 4 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 260P, 114P
B59Borken Obs. in Germany, 1 in MPEC 2020-A105 -- C/2017 T2
B96Brixiis Obs. in Belgium, 7 in MPEC 2020-A105 -- C/2019 T3, C/2018 N2, C/2017 T2, 260P, 114P, 76P, 29P
K47BSCR Obs., 4 in MPEC 2020-A105 -- 260P, 155P, 114P, 78P
215Buchloe Obs. in Germany, 24 in MPEC 2020-A105 -- C/2019 Y1, P/2019 X1, 2019 U6, 2019 T2, 2019 S4, 2019 O2, C/2019 N1, C/2019 L3, C/2019 K5, C/2018 N2, C/2018 DO4, C/2018 A3, C/2017 T2, C/2017 K2, C/2017 B3, 386P, 266P, 261P, 260P, 203P, 173P, 114P, 101P, 29P
X74Campo dos Amarais Obs., 1 in MPEC 2020-A105 -- C/2019 Y1
Z36Cancelada Obs., 4 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 260P, 114P
B20Carmelita Obs. in Spain, 1 in MPEC 2020-A105 -- C/2017 T2
I72Carpe Noctem Obs. in Spain, 5 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 260P, 114P, 29P
160Castelmartini Obs. in Italy, 9 in MPECs 2020-A101 & 2020-A105 -- C/2018 N2, C/2017 T2, 2008 LW16, 9400, 260P, 155P, 114P, 78P, 29P
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2020-A105 & 2020-A109 -- P/2019 Y3, P/2019 Y2, P/2019 T6, 2019 G2, 384P, 289P, 160P, 155P, 114P, 101P, 88P, 76P, 68P
107Cavezzo Obs. in Italy, 3 in MPEC 2020-A105 -- C/2017 T2, 260P, 114P
K51Celado Obs. in Italy, 2 in MPEC 2020-A105 -- P/2019 X1, P/2019 W1
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2020-A105 & 2020-A109 -- P/2019 Y3, P/2019 Y2, C/2019 Y1
A77Chante-Perdrix Obs. in France, 30 in MPECs 2020-A105 & 2020-A109 -- P/2019 Y3, C/2019 Y1, C/2019 V1, P/2019 T6, C/2019 T3, C/2019 L3, C/2019 K5, C/2018 N2, C/2018 DO4, C/2018 A3, C/2017 T2, C/2015 XY1, 390P, 289P, 266P, 260P, 246P, 203P, 173P, 160P, 155P, 124P, 114P, 112P, 101P, 88P, 87P, 78P, 76P, 2I
970Chelmsford Obs. in England, 6 in MPEC 2020-A105 -- P/2019 W1, C/2018 N2, C/2017 T2, C/2017 K2, 114P, 29P
W76ChileScope Obs., 1 in MPEC 2020-A105 -- C/2019 Y1
J01Cielo Profundo Obs. in Spain, 10 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, C/2010 U3, 260P, 155P, 124P, 114P, 78P, 76P, 29P
Z99Clixby Obs. in England, 1 in MPEC 2020-A105 -- P/2019 Y2
L59Compustar Obs., 1 in MPEC 2020-A105 -- 168P
850Cordell-Lorenz Obs. in Tennessee, 2 in MPEC 2020-A105 -- P/2019 X1, P/2019 W1
B50Corner Obs. in Germany, 2 in MPEC 2020-A105 -- C/2018 N2, 29P
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2020-A105 -- P/2019 X1
K77EHB01 Obs., 7 in MPEC 2020-A105 -- C/2019 T3, C/2019 K5, 384P, 266P, 246P, 173P, 88P
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 4 in MPECs 2020-A105 & 2020-A109 -- P/2019 Y3, P/2019 Y2, C/2019 Y1, 2I
595Farra d'Isonzo Obs. in Italy, 6 in MPECs 2020-A102, 2020-A103 & 2020-A105 -- 2020 AY2, 2020 AX2, P/2019 Y2, C/2019 Y1, P/2019 X1, 114P
K83Forti Obs., 2 in MPEC 2020-A105 -- C/2017 T2, 114P
157Frasso Sabino Obs. in Italy, 2 in MPEC 2020-A105 -- P/2019 Y2, P/2019 W1
G26Fushan Obs. in China, 3 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 260P
X31Galilei Obs., 1 in MPEC 2020-A105 -- C/2019 Y1
E89Geyserland Obs. in New Zealand, 3 in MPEC 2020-A105 -- C/2018 W2, C/2017 B3, 29P
K88GINOP-KHK in Hungary, 3 in MPEC 2020-A105 -- P/2019 Y2, P/2019 X1, P/2019 W1
E94Gisborne Obs. in New Zealand, 1 in MPEC 2020-A105 -- 29P
Z30Glyn Marsh Obs., 1 in MPEC 2020-A105 -- 29P
J95Great Shefford Obs. in England, 2 in MPEC 2020-A105 -- P/2019 X1, P/2019 W1
C43Hoyerswerda Obs. in Germany, 4 in MPEC 2020-A105 -- P/2019 Y2, C/2018 N2, C/2017 T2, 114P
U695Hidetaka Sato in Japan via iTelescope Obs. Auberry in northern California, 1 in MPEC 2020-A105 -- 2I
H06iTelescope Obs. Mayhill in New Mexico, 5 in MPEC 2020-A105 -- C/2019 L3, 2019 G2, C/2017 T2, 88P, 2I
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 23 in MPECs 2020-A105 & 2020-A109 -- P/2019 Y3, P/2019 Y2, P/2019 X1, P/2019 W1, C/2019 T3, 2019 S4, 2019 G2, C/2019 F2, C/2019 F1, C/2018 DO4, C/2016 A1, 384P, 289P, 261P, 246P, 228P, 159P, 114P, 101P, 99P, 88P, 2I, 29P
Q62iTelescope Obs. Siding Spring in New South Wales, 2 in MPEC 2020-A105 -- C/2019 Y1, 2019 U6
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 6 in MPEC 2020-A105 -- C/2019 Y1, 2019 C1, 355P, 353P, 73P, 2I
Q62;Mike Mattiazzo in Victoria via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-A105 -- C/2019 Y1
585Kiev Comet Station in Ukraine, 19 in MPEC 2020-A105 -- P/2019 Y2, C/2019 N1, C/2019 L3, C/2019 K5, C/2019 K4, C/2018 W2, C/2018 U1, C/2018 N2, C/2017 T2, C/2017 K2, C/2010 U3, 261P, 260P, 155P, 114P, 101P, 78P, 68P, 29P
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2020-A101 -- 2019 YV1, 2011 UV63
246KLENOT in the Czech Republic, 1 in MPEC 2020-A105 -- P/2019 X1
L12Koksijde Obs., 1 in MPEC 2020-A105 -- C/2017 T2
D95Kurihara Obs. in Japan, 7 in MPEC 2020-A105 -- C/2017 T2, 387P, 384P, 203P, 155P, 76P, 2I
J38La Vara Obs. in Spain, 5 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 260P, 114P, 29P
699LONEOS in Arizona, 2 in MPEC 2020-A105 -- 328P, 190P
130Lumezzane Obs. in Italy, 9 in MPEC 2020-A105 -- C/2019 V1, C/2019 L3, C/2019 K5, C/2018 DO4, C/2017 T2, 289P, 266P, 173P, 99P
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2020-A102, 2020-A103, 2020-A104, 2020-A107 & 2020-A108 -- 2020 AZ2, 2020 AY2, 2020 AX2, 2020 AC3, 2020 AB3
C10Maisoncelles Obs. in France, 10 in MPEC 2020-A105 -- P/2019 Y2, P/2019 X1, P/2019 W1, C/2014 B1, 260P, 155P, 124P, 114P, 2I, 29P
568^R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2020-A105 -- P/2019 W1
711McDonald Obs. in Texas, 2 in MPEC 2020-A105 -- P/2019 Y2, P/2019 W1
118Modra Obs. in Slovakia, 3 in MPEC 2020-A105 -- P/2019 Y2, P/2019 X1, C/2019 V1
K06Montagut Obs., 4 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 114P, 29P
213Montcabre Obs. in Spain, 12 in MPEC 2020-A105 -- P/2019 V2, C/2019 N1, C/2019 L3, C/2018 N2, C/2017 T2, 260P, 155P, 124P, 114P, 78P, 76P, 29P
108Montelupo Obs. in Italy, 1 in MPEC 2020-A105 -- C/2018 N2
V11MPC code V11, 1 in MPEC 2020-A109 -- P/2019 Y3
474Mt. John Obs. in New Zealand, 5 in MPEC 2020-A105 -- C/2019 Y1, P/2019 T5, C/2019 T4, C/2019 E3, 2I
G96Mt. Lemmon Survey (MLS) in Arizona, 21 in MPECs 2020-A102, 2020-A103, 2020-A104, 2020-A105, 2020-A106, 2020-A107 & 2020-A108 -- 2020 AZ2, 2020 AY2, 2020 AX2, 2020 AC3, 2020 AB3, 2020 AA3, P/2019 Y2, P/2019 X1, C/2019 V1, C/2015 O1, 392P, 278P, 155P, 137P, 101P, 99P, 88P, 78P, 48P, 10P, 7P
C53NEOSSat in Earth orbit, 1 in MPEC 2020-A105 -- 2I
C47Nonndorf Obs. in Austria, 7 in MPEC 2020-A105 -- P/2019 W1, C/2019 L3, C/2018 N2, C/2017 T2, 260P, 155P, 76P
Z80Northolt Branch Obs. in England, 5 in MPEC 2020-A101 -- 2020 AN1, 2019 YK4, 2019 YF4, 52768, 333555
C23Olmen Obs. in Belgium, 22 in MPEC 2020-A105 -- C/2019 N1, C/2018 N2, C/2018 DO4, C/2018 A3, C/2017 T2, C/2017 K2, C/2015 O1, 384P, 266P, 261P, 260P, 203P, 173P, 160P, 155P, 124P, 114P, 101P, 78P, 76P, 68P, 29P
J43Oukaimeden Obs. in Morocco, 3 in MPEC 2020-A105 -- P/2019 T6, 203P, 137P
F51Pan-STARRS 1 (PS1) in Hawaii, 20 in MPEC 2020-A105 -- P/2019 X1, P/2019 W1, 2019 U6, C/2019 K5, 2019 C1, P/2018 L5, C/2015 O1, 392P, 387P, 386P, 384P, 203P, 200P, 172P, 137P, 131P, 101P, 65P, 47P, 31P
F52Pan-STARRS 2 (PS2) in Hawaii, 12 in MPEC 2020-A105 -- P/2019 W1, P/2019 T6, C/2019 K5, C/2018 L2, C/2015 O1, 391P, 386P, 266P, 223P, 173P, 114P, 31P
K63Pascoli Obs. in Italy, 4 in MPECs 2020-A103 & 2020-A105 -- 2020 AY2, P/2019 Y2, P/2019 X1, P/2019 W1
B49Paus Obs. in Spain, 2 in MPEC 2020-A105 -- P/2019 X1, C/2017 T2
323Perth Obs. in Western Australia, 2 in MPEC 2020-A105 -- 2019 C1, 2I
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPEC 2020-A105 -- C/2019 L3, C/2018 N2, C/2017 T2, 260P, 114P, 29P
K81PMPHR Obs., 3 in MPEC 2020-A105 -- C/2017 T2, 266P, 29P
G39ROAD in Chile, 1 in MPEC 2020-A105 -- C/2019 Y1
L04ROASTERR-1 in Romania, 4 in MPEC 2020-A105 -- C/2019 L3, C/2018 A3, C/2017 T2, 114P
K61Rokycany Obs. in the Czech Republic, 1 in MPEC 2020-A105 -- P/2019 X1
247roving observer, 1 in MPEC 2020-A105 -- C/2017 T2
104San Marcello Pistoiese Obs. in Italy, 5 in MPECs 2020-A103, 2020-A105 & 2020-A108 -- 2020 AY2, 2020 AC3, C/2017 T2, C/2010 U3, 76P
233San Vito Obs. in Italy, 2 in MPEC 2020-A105 -- 114P, 29P
H36Sandlot Obs. in Kansas, 3 in MPECs 2020-A102 & 2020-A105 -- 2020 AX2, P/2019 Y2, P/2019 W1
B56Sant Pere Obs. in Spain, 5 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, C/2016 M1, 260P, 114P
C95SATINO-1 in France, 5 in MPECs 2020-A101, 2020-A102, 2020-A103, 2020-A105 & 2020-A109 -- 2020 AY2, 2020 AX2, P/2019 Y3, P/2019 Y2, 2016 WE1
K96Savelli Obs., 1 in MPEC 2020-A105 -- 114P
204Schiaparelli Obs. in Italy, 19 in MPECs 2020-A102, 2020-A103, 2020-A104, 2020-A105, 2020-A106 & 2020-A109 -- 2020 AZ2, 2020 AY2, 2020 AX2, 2020 AA3, P/2019 Y3, P/2019 Y2, C/2019 Y1, P/2019 X1, C/2019 V1, C/2017 T2, 261P, 260P, 155P, 124P, 114P, 78P, 76P, 2I, 29P
033Schwarzschild Obs. in Germany, 1 in MPEC 2020-A109 -- P/2019 Y3
K14Sencelles Obs. in Spain, 3 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 114P
Q11Shinshiro Obs., 59 in MPECs 2020-A105 & 2020-A109 -- P/2019 Y3, P/2019 Y2, P/2019 X1, C/2019 V1, P/2019 T6, C/2019 T3, 2019 Q1, C/2019 N1, C/2019 L3, C/2019 K8, C/2019 K5, C/2019 F1, 2019 C1, C/2018 X2, C/2018 N2, C/2018 L2, C/2018 DO4, C/2018 A3, C/2017 T2, C/2017 K2, C/2017 B3, C/2016 X1, C/2016 R2, C/2016 M1, C/2016 A1, C/2015 XY1, C/2015 O1, C/2014 OE4, C/2014 B1, C/2011 KP36, C/2010 U3, 392P, 388P, 385P, 384P, 289P, 266P, 261P, 260P, 246P, 231P, 228P, 203P, 160P, 159P, 155P, 124P, 114P, 112P, 101P, 88P, 87P, 78P, 76P, 68P, 31P, 2I, 29P, 2P
G40"G. Gasparovic in Croatia via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-A105 -- P/2019 Y2
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 6 in MPECs 2020-A105 & 2020-A109 -- P/2019 Y3, P/2019 Y2, C/2018 N2, C/2017 T2, 155P, 2P
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 2 in MPEC 2020-A105 -- C/2019 Y1, C/2018 F4
587Sormano Obs. in Italy, 2 in MPEC 2020-A105 -- C/2019 Y1, P/2019 X1
L06Sormano2 Obs. in Italy, 1 in MPEC 2020-A105 -- P/2019 Y2
691Spacewatch 0.9m telescope in Arizona, 12 in MPECs 2020-A101, 2020-A102, 2020-A103, 2020-A104 & 2020-A109 -- 2020 AZ2, 2020 AY2, 2020 AX2, 2019 YW2, 2019 YA1, P/2019 Y3, 2019 VF6, 2019 UT9, 2019 UJ15, 2019 OA5, 2016 LM8, 2001 QC34
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2020-A101 & 2020-A107 -- 2020 AE, 2020 AB3, 2019 YG1, 2019 YE1, 2019 XU2, 2019 PR2
L39Spica Obs., 1 in MPEC 2020-A105 -- C/2017 T2
W34Squirrel Valley Obs. in North Carolina, 2 in MPEC 2020-A101 -- 417871, 192563
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-A103 -- 2020 AY2
C36Starry Wanderer Obs. in Belarus, 3 in MPEC 2020-A105 -- C/2018 N2, 260P, 114P
I52Steward Obs. Mt. Lemmon Station in Arizona, 11 in MPECs 2020-A102, 2020-A103, 2020-A104, 2020-A105, 2020-A106, 2020-A107, 2020-A108 & 2020-A109 -- 2020 AZ2, 2020 AY2, 2020 AX2, 2020 AC3, 2020 AB3, 2020 AA3, P/2019 Y3, P/2019 Y2, C/2019 Y1, P/2019 X1, P/2019 W1
A71Stixendorf Obs. in Austria, 13 in MPECs 2020-A105 & 2020-A109 -- P/2019 Y3, P/2019 Y2, C/2017 T2, 390P, 289P, 266P, 228P, 160P, 155P, 114P, 101P, 78P, 76P
Q23Sukagawa Obs., 6 in MPEC 2020-A105 -- C/2017 T2, 260P, 155P, 114P, 76P, 2I
Q38Swan Hill Obs., 7 in MPEC 2020-A105 -- C/2019 Y1, 2019 U6, C/2019 K1, C/2018 F4, C/2018 A6, 101P, 2I
461SZTE Asteroid Program in Hungary, 12 in MPEC 2020-A105 -- C/2019 V1, C/2019 T3, 2019 S4, C/2019 L3, C/2017 T2, C/2017 K5, C/2016 A1, C/2015 X5, C/2015 O1, C/2015 D3, C/2014 B1, 289P
J22Tacande Obs. in the Canary Islands, 36 in MPEC 2020-A105 -- P/2019 Y2, C/2019 T4, C/2019 T3, C/2019 L3, C/2019 K8, C/2019 K5, C/2019 F1, 2019 C1, C/2018 N2, C/2018 A3, C/2017 T2, C/2016 X1, C/2016 M1, C/2015 O1, C/2011 KP36, 384P, 266P, 261P, 260P, 246P, 223P, 203P, 173P, 159P, 155P, 124P, 114P, 101P, 88P, 87P, 78P, 76P, 68P, 31P, 2I, 29P
I81Tarbatness Obs. in Scotland, 17 in MPEC 2020-A105 -- C/2019 V1, C/2019 T3, C/2019 N1, C/2018 N2, C/2017 T2, C/2017 K2, C/2010 U3, 260P, 203P, 155P, 124P, 117P, 114P, 78P, 76P, 48P, 29P
X02Telescope Live in Chile, 4 in MPEC 2020-A105 -- P/2019 Y2, C/2019 Y1, 2019 U6, 68P
A16Tentlingen Obs. in Switzerland, 1 in MPEC 2020-A105 -- 289P
C35Terrassa Obs. in Spain, 8 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 260P, 155P, 114P, 101P, 78P, 29P
C57TESS in Earth orbit, 5 in MPEC 2020-A105 -- C/2019 N1, C/2019 K8, C/2010 U3, 183P, 160P
194Tivoli Obs. in Namibia, 1 in MPEC 2020-A105 -- C/2019 Y1
W33Transit Dreams Obs., 1 in MPEC 2020-A105 -- C/2017 T2
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 5 in MPEC 2020-A105 -- P/2019 Y2, C/2019 Y1, P/2019 X1, P/2019 W1, C/2017 T2
Z55Uraniborg Obs., 5 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2, 260P, 114P, 29P
H47Vicksburg Obs. in Mississippi, 6 in MPEC 2020-A105 -- C/2017 T2, C/2015 O1, 260P, 155P, 114P, 78P
C90Vinyols Obs. in Spain, 2 in MPEC 2020-A105 -- C/2018 N2, C/2017 T2
L01Visnjan Obs., 9 in MPECs 2020-A103, 2020-A104, 2020-A105, 2020-A106, 2020-A107, 2020-A108 & 2020-A109 -- 2020 AZ2, 2020 AY2, 2020 AC3, 2020 AB3, 2020 AA3, P/2019 Y3, P/2019 Y2, P/2019 X1, P/2019 W1
Z92West Park Obs. in England, 1 in MPEC 2020-A105 -- C/2017 T2
G33Wickede Obs. in Germany, 1 in MPEC 2020-A105 -- C/2017 T2
C51WISE in Earth polar orbit, 5 in MPECs 2020-A101 & 2020-A105 -- 2019 WF3, C/2018 N2, C/2018 DO4, 353947, 387P
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2020-A105 -- C/2017 T2, 114P
Z57Zuben Obs., 4 in MPEC 2020-A105 -- C/2017 T2, 260P, 114P, 29P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 January '20

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 and NEODyS listings is 100 years, and both post impact solutions beyond that for some 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
2019 YW2JPL Sentry15502113-211934.5856e-07-6.14-6.490JPL: Computed at 05:31 today Pacific time based on 107 observations spanning 15.829 days (2019-Dec-24.513641 to 2020-Jan-09.34275). Diameter approximately 0.054 km. from weighted mean H=23.99.
NEODyS15502106-211328.99e-08-6.85-6.870NEODyS: "Based on 109 optical observations (of which 4 are rejected as outliers) from 2019-12-24.514 to 2020-01-09.344."
2019 YV1JPL Sentry15502089-211391.69052e-05-5.25-5.310JPL: Computed at 05:36 today Pacific time based on 80 observations spanning 19.030 days (2019-Dec-21.11125 to 2020-Jan-09.14096). Diameter approximately 0.032 km. from weighted mean H=25.09.
NEODyS15502089-2118151.46e-05-5.32-5.370NEODyS: "Based on 80 optical observations (of which 0 are rejected as outliers) from 2019-12-21.112 to 2020-01-09.142."

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 9 January '20

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

2000Grabbed MPEC 2020-A109 - Comet P/2019 Y3 (Catalina) - see above
1942Generated Traffic Report
1702Grabbed MPEC 2020-A106 - 2020 AA3 - see above
Grabbed MPEC 2020-A107 - 2020 AB3 - see above
Grabbed MPEC 2020-A108 - 2020 AC3 - see above
1630Grabbed MPEC 2020-A105 - Observations and Orbits of Comets and A/ Objects - see above
1550Noted that JPL Sentry has updated its 2019 YV1 risk assessment - see above
Noted that NEODyS has updated its 2019 YV1 risk assessment - see above
Noted that JPL Sentry has updated its 2019 YW2 risk assessment - see above
Noted that NEODyS has updated its 2019 YW2 risk assessment - see above
Grabbed MPEC 2020-A101 - Daily Orbit Update - see above
Grabbed MPEC 2020-A102 - 2020 AX2 - see above
Grabbed MPEC 2020-A103 - 2020 AY2 - see above
Grabbed MPEC 2020-A104 - 2020 AZ2 - see above