Contents  on 21 September '18

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 21 September '18

Eleven objects reported inside ten LD

Eleven asteroidal objects are reported inside ten lunar distances (LD) of our home world today. Nearest is risk-listed 2018 RQ1, which is inbound from 4.88 to 4.53 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
0.70 LD Sept. 18 2018 SC 9 m  7.51 to 10.64 LD Sept. 15 - 21 intruder, exits ten LD
1.37 LD Sept. 19 2018 RF8 24 m  6.41 to 9.91 LD Sept. 16 - 22 Moon buzzer
1.66 LD Sept. 18 2018 SJ1 34 m  8.68 to 12.07 LD Sept. 15 - 21 exits ten LD
2.41 LD Sept. 17 2018 RK6 9 m  5.60 to 6.90 LD Sept. 10 - 24 NHATS target
3.54 LD Sept. 16 2018 RG8 15 m  7.26 to 8.66 LD Sept. 10 - 22
4.05 LD Sept. 18 2018 SC1 9 m  6.53 to 8.01 LD Sept. 13 - 23 risk
4.06 LD Sept. 24 2018 RQ1 51 m  4.53 from 4.88 LD Sept. 11 - Oct. 8 NHATS target, risk
4.49 LD Sept. 16 2018 RG5 15 m  9.05 to 10.70 LD Sept. 11 - 21 NHATS target, exits ten LD
6.80 LD Sept. 27 2018 SM1 89 m  9.61 from 10.52 LD today - Oct. 3 NHATS target, enters ten LD
8.50 LD yesterday 2017 SL16 23 m  8.50 to 8.65 LD Sept. 17 - 24 NHATS target
8.57 LD tomorrow 2018 RH6 11 m  8.65 from 8.92 LD Sept. 19 - 26 NHATS target

This report was generated at 1917 UTC with the discovery of already departed 2018 RV27 (MPEC), which flew by Earth at 2.14 LD on September 9th. It appears there will be no Daily Orbit Update MPEC issued today.


<< Reading:  JAXA has attempted to deploy two small rovers to 162173 Ryugu (1999 JU3) from its Hayabusa2 spacecraft. Watch for further news on the Hayabusa2 Twitter feed and at Google.



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. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 21 September '18

The MPC's NEO Confirmation Page has 29 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 29 objects listed. Of these, 21 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 21 September '18

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. No Daily Orbit Update DOU MPEC has been posted yet, so visit the MPC Status Page for possible explanation.


MPEC 2018-S51 - "13:55 UT" - 2018 RV27


<< OOC on 21 Sept. '18 -- MPEC 2018-S50 - "00:29 UT" - Observations and Orbits of Comets

Observers  on 21 September '18

A total of 150 observers appear in today's MPECs.

CodeObserver / observatory
L2729PREMOTE Obs., 19 in MPEC 2018-S50 -- C/2018 L2, C/2018 K1, C/2018 EF9, C/2018 C2, C/2018 A3, C/2017 M4, C/2017 K2, C/2016 R2, C/2016 N4, C/2015 O1, 200P, 187P, 137P, 129P, 65P, 64P, 48P, 37P, 29P
349Ageo Obs. in Japan, 40 in MPEC 2018-S50 -- C/2018 N1, C/2018 M1, C/2018 L2, C/2018 K1, P/2018 H2, C/2018 C2, C/2018 A3, P/2017 Y3, C/2017 T2, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2017 E3, C/2017 D3, C/2016 R2, C/2016 N6, C/2016 M1, C/2015 V1, C/2015 O1, C/2015 LC2, C/2014 OE4, 364P, 137P, 129P, 105P, 78P, 74P, 66P, 65P, 64P, 62P, 59P, 48P, 46P, 38P, 37P, 29P, 24P, 21P
B54Ager Obs. in Spain, 4 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, C/2017 K2, C/2017 E3
C97Al-Fulaij Obs., 7 in MPEC 2018-S50 -- C/2017 M4, P/2013 R3-B, P/2013 R3-A, 137P, 78P, 37P, 29P
L17Albanya Obs., 1 in MPEC 2018-S50 -- 21P
K40Altdorf Obs. in Germany, 7 in MPEC 2018-S50 -- C/2017 M4, 64P, 48P, 38P, 37P, 29P, 21P
B37Ametlla del Valles Obs. in Spain, 1 in MPEC 2018-S50 -- C/2017 M4
E23Arcadia Obs. in New South Wales, 1 in MPEC 2018-S50 -- 46P
T05ATLAS Haleakala in Hawaii, 53 in MPEC 2018-S50 -- C/2018 R5, P/2018 P3, C/2018 N1, P/2018 L5, C/2018 L2, C/2018 K1, C/2018 F1, C/2018 C2, C/2018 B1, C/2018 A6, C/2018 A3, P/2017 W3, A/2017 U7, C/2017 T2, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2017 E3, C/2016 N6, C/2016 N4, C/2016 M1, C/2015 V1, C/2015 O1, P/2015 HG16, C/2015 H2, C/2014 R3, C/2014 OE4, C/2013 V4, C/2010 U3, P/2005 R1, 364P, 313P, 223P, 186P, 183P, 143P, 137P, 131P, 129P, 125P, 105P, 78P, 74P, 66P, 65P, 64P, 48P, 46P, 38P, 37P, 29P, 21P
T08ATLAS Mauna Loa in Hawaii, 47 in MPEC 2018-S50 -- P/2018 P3, C/2018 O1, C/2018 N1, C/2018 M1, P/2018 L5, C/2018 L2, C/2018 K1, C/2018 C2, C/2018 A3, A/2017 U7, C/2017 T2, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2017 E3, C/2016 N6, C/2016 N4, C/2016 M1, C/2015 VL62, C/2015 V1, C/2015 T2, C/2015 O1, C/2014 R3, C/2014 OE4, P/2005 R1, 364P, 313P, 243P, 223P, 187P, 186P, 143P, 137P, 131P, 129P, 125P, 105P, 78P, 74P, 66P, 65P, 64P, 48P, 46P, 37P, 29P
I47Auger Obs. in Argentina, 15 in MPEC 2018-S50 -- C/2017 B3, C/2016 M1, C/2015 V2, 364P, 186P, 143P, 105P, 78P, 74P, 66P, 65P, 48P, 38P, 37P, 29P
C77Bernezzo Obs. in Italy, 2 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4
V03Big Water Obs. in Utah, 1 in MPEC 2018-S50 -- P/2018 L5
C86Blanes Obs. in Spain, 6 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, C/2016 R2, C/2016 N6, C/2015 O1, 21P
Q68Blue Mountains Obs. in New South Wales, 25 in MPEC 2018-S50 -- C/2018 N2, C/2018 N1, C/2018 L2, C/2018 K1, C/2018 C2, C/2017 M5, C/2017 E3, C/2017 B3, C/2016 M1, C/2015 VL62, 364P, 243P, 223P, 137P, 131P, 105P, 78P, 66P, 65P, 64P, 48P, 46P, 38P, 37P, 29P
B96Brixiis Obs. in Belgium, 20 in MPEC 2018-S50 -- C/2018 M1, C/2018 KJ3, C/2018 C2, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2017 E3, C/2016 N4, C/2015 O1, C/2014 OE4, C/2010 U3, 137P, 78P, 66P, 64P, 38P, 37P, 29P, 21P
215Buchloe Obs. in Germany, 40 in MPEC 2018-S50 -- C/2018 R3, C/2018 P5, P/2018 P4, C/2018 N1, C/2018 KJ3, C/2018 K1, C/2018 EN4, C/2018 C2, C/2018 B1, C/2017 T2, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2016 Q2, C/2015 V1, C/2015 O1, C/2015 H2, C/2014 OE4, C/2010 U3, P/2010 A1, P/2005 R1, P/2001 T3, 350P, 215P, 187P, 137P, 130P, 129P, 123P, 105P, 78P, 66P, 65P, 64P, 48P, 38P, 37P, 29P, 21P
U63Burnt Tree Hill Obs., 1 in MPEC 2018-S50 -- C/2017 M4
W96Campo Catino Austral Obs. (CAO) in Chile, 17 in MPEC 2018-S50 -- C/2018 K1, C/2017 T1, C/2016 M1, C/2015 V2, 364P, 223P, 137P, 129P, 78P, 66P, 64P, 48P, 46P, 38P, 37P, 29P, 21P
I72Carpe Noctem Obs. in Spain, 14 in MPEC 2018-S50 -- C/2018 M1, C/2017 M4, C/2017 K4, C/2017 K2, C/2016 R2, C/2016 N6, C/2016 N4, C/2016 A1, C/2015 O1, C/2010 U3, 64P, 38P, 37P, 21P
B53Casal Lumbroso Obs. in Italy, 3 in MPEC 2018-S50 -- C/2017 M4, 29P, 21P
160Castelmartini Obs. in Italy, 25 in MPEC 2018-S50 -- C/2018 M1, C/2018 C2, C/2018 A3, C/2017 M5, C/2017 M4, C/2017 K4, C/2016 R2, C/2016 A1, 365P, 235P, 200P, 183P, 137P, 131P, 125P, 105P, 78P, 74P, 64P, 62P, 38P, 37P, 30P, 29P, 21P
703Catalina Sky Survey (CSS) in Arizona, 32 in MPEC 2018-S50 -- P/2018 P4, C/2018 M1, P/2018 L5, C/2018 F1, C/2018 C2, C/2018 B1, C/2017 M4, C/2017 K4, C/2017 K1, C/2017 E3, C/2015 X5, C/2015 O1, P/2005 R1, P/2001 T3, 223P, 187P, 143P, 137P, 131P, 125P, 105P, 78P, 74P, 65P, 64P, 60P, 48P, 46P, 38P, 37P, 24P, 2P
107Cavezzo Obs. in Italy, 5 in MPEC 2018-S50 -- C/2015 O1, 64P, 37P, 29P, 21P
A58Chalandray-Canotiers Obs. in France, 2 in MPEC 2018-S50 -- C/2015 O1, 21P
A77Chante-Perdrix Obs. in France, 17 in MPEC 2018-S50 -- C/2018 N1, C/2017 M4, C/2017 K2, C/2015 O1, C/2014 OE4, 137P, 129P, 78P, 66P, 65P, 64P, 48P, 46P, 38P, 37P, 29P, 21P
970Chelmsford Obs. in England, 3 in MPEC 2018-S50 -- C/2017 M4, C/2017 K2, 21P
J01Cielo Profundo Obs. in Spain, 16 in MPEC 2018-S50 -- C/2018 N1, C/2018 C2, C/2017 M4, C/2017 K2, C/2015 O1, 137P, 78P, 66P, 65P, 64P, 48P, 46P, 38P, 37P, 29P, 21P
850Cordell-Lorenz Obs. in Tennessee, 6 in MPEC 2018-S50 -- C/2016 N6, P/2010 A1, 74P, 64P, 29P, 21P
B50Corner Obs. in Germany, 4 in MPEC 2018-S50 -- C/2018 C2, C/2016 A1, 187P, 65P
Z39Costa Teguise Obs. in the Canary Islands, 6 in MPEC 2018-S50 -- C/2018 L2, C/2018 C2, C/2017 M4, C/2015 O1, 364P, 74P
I17Cupillari Obs. in Pennsylvania, 2 in MPEC 2018-S50 -- C/2017 M4, C/2016 N4
K87Dettelbach Vineyard Obs. in Germany, 3 in MPEC 2018-S50 -- P/2018 P4, C/2017 M4, C/2015 O1
113Drebach Obs. in Germany, 5 in MPEC 2018-S50 -- C/2016 A1, P/2005 R1, 64P, 59P, 37P
L05Dridri Obs. in Italy, 2 in MPEC 2018-S50 -- C/2017 M4, 78P
K02Eastwood Obs. in England, 14 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, C/2016 R2, C/2016 N6, C/2016 N4, C/2015 O1, C/2010 U3, 129P, 78P, 64P, 46P, 37P, 29P, 21P
K77EHB01 Obs., 32 in MPEC 2018-S50 -- C/2018 P5, P/2018 P4, P/2018 P3, C/2018 N1, C/2018 L2, C/2018 KJ3, C/2017 T2, C/2017 M5, C/2017 K4, C/2017 K2, C/2016 R2, C/2015 H2, P/2010 A1, P/2005 R1, P/2001 T3, P/2001 R6, 243P, 223P, 200P, 171P, 137P, 131P, 130P, 129P, 123P, 78P, 66P, 64P, 60P, 48P, 46P, 38P
J27El Guijo Obs. in Spain, 3 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, 64P
E85Farm Cove Obs. in New Zealand, 4 in MPEC 2018-S50 -- C/2017 E3, 186P, 143P, 105P
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2018-S50 -- C/2017 M4
K83Forti Obs., 1 in MPEC 2018-S50 -- 64P
157Frasso Sabino Obs. in Italy, 1 in MPEC 2018-S50 -- P/2018 H2
K97Freconrupt Obs., 9 in MPEC 2018-S50 -- C/2018 C2, C/2018 A3, C/2016 R2, 64P, 46P, 38P, 37P, 29P, 21P
G26Fushan Obs. in China, 6 in MPEC 2018-S50 -- C/2016 N6, C/2015 O1, 64P, 37P, 29P, 21P
372Geisei Obs. in Japan, 6 in MPEC 2018-S50 -- C/2018 O1, C/2018 KJ3, C/2018 K1, C/2018 C2, C/2016 M1, 187P
E89Geyserland Obs. in New Zealand, 4 in MPEC 2018-S50 -- C/2018 L2, C/2016 M1, 78P, 48P
E94Gisborne Obs. in New Zealand, 6 in MPEC 2018-S50 -- C/2017 M5, C/2015 V2, 223P, 137P, 78P, 29P
Z182program code 2 via Gran Telescopio in the Canary Islands, 1 in MPEC 2018-S50 -- C/2018 C2
K73Gravina Obs. in Italy, 1 in MPEC 2018-S50 -- C/2017 M4
J95Great Shefford Obs. in England, 1 in MPEC 2018-S50 -- 21P
238Grorudalen Obs. in Norway, 6 in MPEC 2018-S50 -- C/2017 M4, C/2016 R2, 64P, 38P, 29P, 21P
458Guadarrama Obs. in Spain, 1 in MPEC 2018-S50 -- 78P
750Hobbs Obs. in Wisconsin, 4 in MPEC 2018-S50 -- C/2017 M4, 137P, 64P, 37P
C43Hoyerswerda Obs. in Germany, 4 in MPEC 2018-S50 -- C/2017 M4, 137P, 37P, 21P
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2018-S50 -- 48P
U69"M. Suzuki in Japan via iTelescope Obs. Auberry in northern California, 1 in MPEC 2018-S50 -- 21P
U69#program code "#" (12) via iTelescope Obs. Auberry in northern California, 1 in MPEC 2018-S50 -- 21P
U695Hidetaka Sato in Japan via iTelescope Obs. Auberry in northern California, 13 in MPEC 2018-S50 -- C/2018 C2, C/2018 B1, C/2017 W2, C/2017 F2, C/2017 F1, C/2017 AB5, C/2016 A1, C/2014 R3, C/2010 U3, 364P, 250P, 217P, 47P
H06iTelescope Obs. Mayhill in New Mexico, 4 in MPEC 2018-S50 -- C/2016 R2, 64P, 41P, 21P
H06`Erik Bryssinck in Belgium via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-S50 -- 21P
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 8 in MPEC 2018-S50 -- C/2018 M1, C/2017 K6, C/2016 N6, C/2015 T2, P/2005 R1, P/2001 R6, 361P, 164P
I89/program code "/" (24) via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2018-S50 -- C/2010 S1
Q62iTelescope Obs. Siding Spring in New South Wales, 3 in MPEC 2018-S50 -- 66P, 38P, 29P
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 22 in MPEC 2018-S50 -- P/2018 P4, C/2018 L2, C/2018 E1, A/2017 U7, C/2016 Q2, C/2015 V2, C/2015 V1, C/2013 P3, C/2011 KP36, P/2001 R6, 364P, 350P, 300P, 243P, 227P, 223P, 186P, 130P, 129P, 66P, 38P, 29P
Q623Rolando Ligustri in Italy via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-S50 -- 46P
Q62;Mike Mattiazzo in Victoria via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-S50 -- 48P
Q62<program code "<" (37) via iTelescope Obs. Siding Spring in New South Wales, 3 in MPEC 2018-S50 -- C/2016 M1, 37P, 29P
Q62?B. Lutkenhoner in Germany via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-S50 -- 364P
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-S50 -- C/2016 M1
Q67JBL Obs., 1 in MPEC 2018-S50 -- 29P
585Kiev Comet Station in Ukraine, 28 in MPEC 2018-S50 -- C/2018 L2, C/2018 F1, C/2018 C2, C/2018 A3, C/2017 M5, C/2017 M4, C/2017 D3, C/2016 R2, C/2016 N6, C/2016 N4, C/2016 M1, C/2016 A1, C/2015 O1, C/2010 U3, 235P, 137P, 130P, 125P, 105P, 78P, 74P, 64P, 48P, 38P, 37P, 30P, 29P, 21P
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2018-S50 -- C/2018 KJ3, P/2018 C1
246KLENOT in the Czech Republic, 1 in MPEC 2018-S50 -- C/2018 A3
L12Koksijde Obs., 2 in MPEC 2018-S50 -- 38P, 21P
D95Kurihara Obs. in Japan, 20 in MPEC 2018-S50 -- C/2018 K1, C/2018 C2, C/2018 A3, C/2017 M5, C/2017 M4, C/2017 K2, C/2016 N6, C/2016 M1, C/2015 O1, 187P, 137P, 78P, 66P, 64P, 48P, 38P, 37P, 29P, 24P, 21P
212La Dehesilla Obs. in Spain, 8 in MPEC 2018-S50 -- C/2017 M5, C/2017 M4, C/2017 K2, C/2015 ER61, 137P, 78P, 64P, 21P
J38La Vara Obs. in Spain, 5 in MPEC 2018-S50 -- C/2017 M4, C/2015 O1, 137P, 78P, 29P
Z43Landehen Obs., 2 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2018-S50 -- 46P
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2018-S50 -- 46P
K22Les Barres Obs. in France, 2 in MPEC 2018-S50 -- C/2017 M4, 38P
K08Lledoner Obs., 1 in MPEC 2018-S50 -- C/2015 O1
L30Lohbach Obs., 4 in MPEC 2018-S50 -- C/2016 R2, C/2016 N6, C/2015 O1, 74P
D35Lulin Minor Bodies Tracking (LIMIT) in Taiwan, 2 in MPEC 2018-S50 -- C/2018 C2, C/2017 K2
K38M57 Obs. in Italy, 1 in MPEC 2018-S50 -- C/2018 C2
C10Maisoncelles Obs. in France, 11 in MPEC 2018-S50 -- C/2018 K1, C/2017 M4, C/2017 K2, C/2016 R2, P/2011 W2, 78P, 64P, 46P, 38P, 29P, 21P
L51MARGO in Ukraine, 2 in MPEC 2018-S50 -- 46P, 38P
K32Maritime Alps Obs. in Italy, 1 in MPEC 2018-S50 -- C/2018 C2
W92MASTER OAFA Obs., 1 in MPEC 2018-S50 -- 78P
568*Paul Wiegert on Mauna Kea in Hawaii, 1 in MPEC 2018-S50 -- 156P
568_Marco Micheli on Mauna Kea in Hawaii, 7 in MPEC 2018-S50 -- C/2018 EF9, C/2018 A1, C/2017 P2, C/2017 F2, 105P, 66P, 48P
Z50Mazariegos Obs., 2 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2018-S50 -- 64P
152Moletai Obs. in Lithuania, 1 in MPEC 2018-S50 -- 21P
213Montcabre Obs. in Spain, 7 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, C/2015 O1, 364P, 64P, 29P, 21P
108Montelupo Obs. in Italy, 2 in MPEC 2018-S50 -- 29P, 21P
900Moriyama Obs. in Japan, 3 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, C/2015 O1
474Mt. John Obs. in New Zealand, 5 in MPEC 2018-S50 -- P/2018 L4, P/2018 L1, C/2017 X1, C/2017 E3, C/2015 H2
G96Mt. Lemmon Survey (MLS) in Arizona, 31 in MPEC 2018-S50 -- C/2018 P5, P/2018 P4, P/2018 P3, P/2018 L5, C/2018 C2, C/2018 B1, C/2017 S7, C/2017 M4, C/2017 K1, C/2017 E3, C/2017 D2, C/2015 O1, C/2015 H2, P/2010 A1, 315P, 245P, 223P, 215P, 187P, 171P, 137P, 131P, 78P, 66P, 65P, 64P, 48P, 46P, 24P, 14P, 2P
K74Muensterschwarzach Obs. in Germany, 2 in MPEC 2018-S50 -- 46P, 21P
628Mulheim-Ruhr Obs. in Germany, 4 in MPEC 2018-S50 -- C/2017 M4, C/2017 K4, P/2005 R1, 64P
D81Nagano Obs. in Japan, 24 in MPEC 2018-S50 -- C/2018 N1, C/2018 M1, C/2018 L2, C/2018 K1, C/2018 EF9, C/2018 C2, C/2017 M4, C/2017 K4, C/2017 K2, C/2016 R2, C/2016 N6, C/2016 N4, C/2016 M1, C/2015 O1, C/2014 OE4, C/2013 V4, 129P, 78P, 74P, 66P, 65P, 48P, 37P, 29P
0895N.V. Maigurova via Nikolaev Obs. in Ukraine, 2 in MPEC 2018-S50 -- C/2016 M1, C/2015 O1
C47Nonndorf Obs. in Austria, 11 in MPEC 2018-S50 -- C/2018 M1, C/2018 C2, C/2017 M4, C/2015 O1, P/2010 A1, 137P, 78P, 64P, 37P, 29P, 21P
J69North Obs. in England, 1 in MPEC 2018-S50 -- C/2018 C2
Z80Northolt Branch Obs. in England, 4 in MPEC 2018-S50 -- C/2017 M4, 64P, 29P, 21P
Z37Northolt Branch Obs. 3 Blandford Forum, 1 in MPEC 2018-S50 -- 21P
C23Olmen Obs. in Belgium, 24 in MPEC 2018-S50 -- C/2018 O1, C/2018 C2, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2017 E3, C/2016 N6, C/2016 N4, C/2015 O1, C/2014 OE4, 137P, 129P, 123P, 78P, 74P, 66P, 65P, 64P, 48P, 38P, 37P, 29P, 21P
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2018-S50 -- 137P
C27Pallerols Obs. in Spain, 2 in MPEC 2018-S50 -- C/2017 M4, 78P
I41Palomar Transient Factory (PTF) in southern California, 3 in MPECs 2018-S50 & 2018-S51 -- 2018 RV27, C/2018 C2, C/2013 V4
F51Pan-STARRS 1 (PS1) in Hawaii, 39 in MPEC 2018-S50 -- C/2018 P5, P/2018 P4, P/2018 H2, P/2017 Y3, C/2017 M5, C/2017 M4, C/2017 K2, C/2016 N4, C/2015 LC2, C/2015 H2, C/2013 V4, 365P, 350P, 349P, 315P, 263P, 245P, 243P, 234P, 223P, 215P, 200P, 187P, 172P, 162P, 150P, 138P, 137P, 131P, 129P, 105P, 94P, 78P, 77P, 65P, 48P, 37P, 24P, 2P
F52Pan-STARRS 2 (PS2) in Hawaii, 7 in MPEC 2018-S50 -- C/2017 M4, P/2005 R1, 334P, 187P, 150P, 131P, 129P
K19PASTIS Obs. in France, 1 in MPEC 2018-S50 -- 21P
B49Paus Obs. in Spain, 1 in MPEC 2018-S50 -- C/2017 M4
323Perth Obs. in Western Australia, 9 in MPEC 2018-S50 -- C/2018 N2, 364P, 137P, 78P, 64P, 48P, 46P, 38P, 29P
N43Plateau Obs. Kunlun Station Dome A, 2 in MPEC 2018-S50 -- C/2012 K6, C/2010 B1
W98Polonia Obs. in Chile, 2 in MPEC 2018-S50 -- 223P, 215P
D29Purple Mtn. Obs. Xuyi Station in China, 20 in MPEC 2018-S50 -- P/2018 P4, P/2018 L5, C/2018 C2, C/2017 M5, C/2017 M4, C/2017 E3, 313P, 223P, 215P, 183P, 172P, 143P, 137P, 129P, 105P, 78P, 65P, 64P, 37P, 29P
L04ROASTERR-1 in Romania, 4 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, C/2015 O1, 64P
247roving observer, 1 in MPEC 2018-S50 -- 29P
619Sabadell Obs. in Spain, 1 in MPEC 2018-S50 -- 37P
L07Salvatore di Giacomo Obs., 1 in MPEC 2018-S50 -- C/2017 M4
104San Marcello Pistoiese Obs. in Italy, 5 in MPEC 2018-S50 -- C/2018 C2, C/2017 M5, C/2017 M4, 29P, 21P
193Sanglok Obs. in Tajikistan, 1 in MPEC 2018-S50 -- C/2017 M5
B70Sant Celoni Obs. in Spain, 1 in MPEC 2018-S50 -- 21P
B74Santa Maria de Montmagastrell Obs. in Spain, 6 in MPEC 2018-S50 -- P/2018 P3, C/2018 C2, C/2017 M4, C/2017 E3, 137P, 78P
C95SATINO-1 in France, 2 in MPEC 2018-S50 -- C/2017 M4, C/2015 O1
204Schiaparelli Obs. in Italy, 1 in MPEC 2018-S50 -- 21P
033Schwarzschild Obs. in Germany, 1 in MPEC 2018-S50 -- C/2018 R4
K14Sencelles Obs. in Spain, 2 in MPEC 2018-S50 -- C/2017 M4, C/2015 O1
Q11Shinshiro Obs., 34 in MPEC 2018-S50 -- C/2018 N1, C/2018 K1, P/2018 H2, C/2018 EN4, C/2018 C2, C/2018 A6, C/2017 T2, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2017 D3, C/2016 N4, C/2016 M1, C/2015 V1, C/2015 O1, C/2014 OE4, 223P, 187P, 183P, 143P, 137P, 131P, 129P, 125P, 105P, 78P, 65P, 64P, 48P, 37P, 30P, 29P, 24P
0948program code 8 via Simeis Obs. in Ukraine, 1 in MPEC 2018-S50 -- C/2018 A3
G40"G. Gasparovic in Croatia via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPEC 2018-S50 -- C/2014 Q2, C/2013 X1
G40(program code "(" (17) via Slooh.com Canary Islands Obs. in the Canary Islands, 10 in MPEC 2018-S50 -- P/2018 H2, C/2018 C2, C/2017 E3, C/2016 N4, C/2014 R3, C/2014 B1, P/2005 R1, 364P, 143P, 125P
G40*program code "*" (19) via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPEC 2018-S50 -- C/2018 C2, C/2016 N6
G40+program code "+" (20) via Slooh.com Canary Islands Obs. in the Canary Islands, 16 in MPEC 2018-S50 -- C/2018 O1, C/2018 N1, C/2018 KJ3, C/2018 C2, C/2017 T2, C/2017 M4, C/2017 E3, C/2015 V1, P/2005 R1, 243P, 223P, 143P, 125P, 74P, 64P, 38P
G402program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 4 in MPEC 2018-S50 -- 48P, 37P, 29P, 21P
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 47 in MPEC 2018-S50 -- P/2018 R1, P/2018 P4, C/2018 N1, C/2018 M1, C/2018 L2, C/2018 KJ3, C/2018 F1, C/2018 C2, C/2018 A3, C/2017 T2, C/2017 S3, C/2017 M4, C/2017 K2, C/2017 K1, C/2016 N6, C/2016 N4, C/2016 M1, C/2015 V1, C/2015 O1, C/2014 OE4, C/2014 B1, C/2013 C2, P/2010 A1, P/2005 R1, P/2001 T3, 364P, 240P, 235P, 223P, 187P, 164P, 137P, 129P, 125P, 123P, 105P, 78P, 74P, 66P, 65P, 64P, 59P, 49P, 48P, 38P, 37P, 21P
W88"program code '"' (11) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-S50 -- C/2016 M1
W88#program code "#" (12) via Slooh.com Chile Obs. in Chile, 2 in MPEC 2018-S50 -- C/2016 M1, 66P
W88$program code "$" (13) via Slooh.com Chile Obs. in Chile, 10 in MPEC 2018-S50 -- C/2018 N2, C/2018 N1, C/2018 L2, C/2018 K1, A/2017 U7, C/2017 B3, C/2016 M1, 364P, 65P, 48P
W88%program code "%" (14) via Slooh.com Chile Obs. in Chile, 9 in MPEC 2018-S50 -- C/2018 N1, C/2018 E1, C/2017 K6, C/2016 R2, C/2016 M1, 364P, 74P, 64P, 62P
W881Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-S50 -- C/2015 V1
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 12 in MPEC 2018-S50 -- C/2018 N2, C/2017 T3, C/2017 B3, C/2016 M1, C/2015 V2, C/2015 V1, 364P, 186P, 130P, 64P, 37P, 21P
W884G. Gasparovic in Croatia via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-S50 -- 29P
Y00SONEAR in Brazil, 7 in MPEC 2018-S50 -- C/2018 N2, C/2018 N1, C/2018 C2, C/2016 M1, C/2015 V2, 65P, 48P
Q21Southern Utsunomiya in Japan, 1 in MPEC 2018-S50 -- 29P
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2018-S50 -- C/2013 C2, P/2005 R1, 171P, 30P, 24P
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2018-S50 -- C/2017 M4
K21St. Saturnin les Avignon Obs. in France, 1 in MPEC 2018-S50 -- C/2017 M4
C36Starry Wanderer Obs. in Belarus, 3 in MPEC 2018-S50 -- 64P, 37P, 21P
I52Steward Obs. Mt. Lemmon Station in Arizona, 2 in MPEC 2018-S50 -- P/2018 P3, P/2018 L5
A71Stixendorf Obs. in Austria, 28 in MPEC 2018-S50 -- C/2018 P5, P/2018 P4, P/2018 P3, C/2018 N1, C/2018 M1, C/2018 EF9, C/2018 C2, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2016 R2, C/2016 N6, C/2016 M1, C/2014 OE4, 364P, 187P, 137P, 130P, 129P, 105P, 78P, 66P, 64P, 48P, 37P, 29P, 21P
Q23Sukagawa Obs., 10 in MPEC 2018-S50 -- C/2018 K1, C/2018 C2, C/2017 M4, C/2016 M1, 66P, 64P, 38P, 37P, 29P, 21P
Q38Swan Hill Obs., 22 in MPEC 2018-S50 -- C/2018 N1, C/2018 L2, C/2018 E1, C/2018 C2, C/2017 T2, C/2017 M4, C/2017 B3, C/2016 M1, C/2015 V2, 364P, 186P, 137P, 129P, 125P, 78P, 74P, 65P, 64P, 48P, 46P, 37P, 29P
461SZTE Asteroid Program in Hungary, 15 in MPEC 2018-S50 -- C/2018 M1, C/2018 KJ3, C/2017 M5, C/2017 K2, C/2016 Q2, C/2015 X5, C/2015 T2, C/2015 LC2, C/2014 OE4, C/2013 V4, P/2007 V1, P/2005 R1, 243P, 223P, 131P
673"program code '"' (11) via Table Mtn. Obs. in southern California, 1 in MPEC 2018-S50 -- C/2018 O1
J22Tacande Obs. in the Canary Islands, 39 in MPEC 2018-S50 -- C/2018 N2, C/2018 N1, C/2018 M1, P/2018 L5, C/2018 L2, C/2018 F1, C/2018 C2, C/2018 A3, C/2017 M4, C/2017 K4, C/2017 K2, C/2016 N6, C/2016 N4, C/2016 M1, C/2015 V1, C/2015 O1, P/2010 A1, P/2005 R1, 364P, 361P, 223P, 187P, 186P, 158P, 143P, 137P, 130P, 125P, 105P, 78P, 66P, 65P, 64P, 48P, 46P, 38P, 37P, 29P, 21P
I81Tarbatness Obs. in Scotland, 16 in MPEC 2018-S50 -- C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2016 R2, C/2016 A1, C/2010 U3, 159P, 131P, 123P, 64P, 60P, 38P, 37P, 29P, 21P
A98Taurus-1 Obs. in Belarus, 6 in MPEC 2018-S50 -- C/2017 M4, C/2016 R2, 78P, 64P, 38P, 21P
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-S50 -- 46P
Z55Uraniborg Obs., 6 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, C/2015 O1, 137P, 78P, 21P
H47Vicksburg Obs. in Mississippi, 16 in MPEC 2018-S50 -- C/2018 K1, C/2018 C2, C/2017 T2, C/2017 M5, C/2017 M4, C/2017 E3, C/2016 M1, 105P, 78P, 66P, 64P, 48P, 38P, 37P, 29P, 21P
C90Vinyols Obs. in Spain, 1 in MPEC 2018-S50 -- C/2017 M4
L01Visnjan Obs., 1 in MPEC 2018-S50 -- C/2018 C2
Z92West Park Obs. in England, 1 in MPEC 2018-S50 -- 21P
G33Wickede Obs. in Germany, 1 in MPEC 2018-S50 -- 64P
198Wildberg Obs. in Germany, 1 in MPEC 2018-S50 -- P/2010 A1
C51WISE in Earth polar orbit, 11 in MPEC 2018-S50 -- C/2018 C2, C/2017 M4, C/2016 M1, C/2015 V2, P/2010 A1, 143P, 105P, 65P, 38P, 37P, 29P
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2018-S50 -- C/2017 M4, C/2015 O1
367Yatsuka Obs. in Japan, 19 in MPEC 2018-S50 -- C/2018 N1, C/2018 L2, C/2018 C2, C/2017 M4, C/2016 R2, C/2016 N6, C/2016 M1, C/2015 O1, 364P, 129P, 105P, 78P, 66P, 64P, 48P, 38P, 37P, 29P, 21P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 September '18

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
2009 FZ4JPL Sentry18042019-21163992.4167858e-06-5.33-6.310JPL: Computed at 22:33 April 7th of 2017 Pacific time based on 11 observations spanning .59999 days (2009-Mar-19.36974 to 2009-Mar-19.96973). Diameter approximately 0.031 km. from weighted mean H=25.21.

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 21 September '18

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

1917Generated Traffic Report
1804Noted that JPL Sentry has updated its 2009 FZ4 risk assessment - see above
1530Grabbed MPEC 2018-S51 - 2018 RV27 - see above
0300Grabbed MPEC 2018-S50 - Observations and Orbits of Comets - see above