Contents  on 27 May '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 27 May '18

Six objects reported inside ten LD

There are six transient natural objects known to be inside ten lunar distances (LD) of our planet today. Nearest is newly announced risk-listed intruder 2018 KY2, which exits Earth's sphere of gravitational influence as it travels out from 2.25 to 4.89 LD. Yesterday it passed us at 0.78 LD at 0524 UTC, and went by the Moon at 1.15 LD about 16 hours later.

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
0.39 LD May 23 2018 KW1 4 m  5.52 to 7.08 LD May 17 - 29 intruder, NHATS target
0.78 LD yesterday 2018 KY2 13 m  2.25 to 4.89 LD May 22 - 29 NEW, intruder, exits Earth SOI, risk - MPEC
2.05 LD May 22 2018 KS 9 m  8.53 to 10.20 LD May 16 - 27 NHATS target, exits ten LD
2.48 LD May 23 2018 KT2 14 m  8.03 to 9.89 LD May 18 - 28 NHATS target
3.13 LD May 21 2018 KU2 15 m  9.80 to 11.41 LD May 15 - 27 NHATS target, exits ten LD
6.10 LD May 29 2018 KN2 27 m  6.77 from 7.74 LD May 25 - June 3 DOU

This report was generated at 1928 UTC with new discovery 2018 KY2 (MPEC) and with the recovery of distant 2014 HQ124 in today's DOU MPEC, which also has follow-up for three objects in the active traffic tables here plus departed risk-listed 2018 JN. And we have added to this reporting that JPL calculates that 2018 KS, which flew by at 2.05 LD on May 22nd this year, also came by at about 1.61 LD last May and roughly 8.1 LD the May before that.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
9.50 LD May 29 68347 2001 KB67 371 m  10.07 from 11.42 LD tomorrow - May 30 radar target
5.56 LD June 10 2018 EJ4 186 m  19.91 from 21.22 LD June 4 - 16 radar/NHATS target - DOU
8.96 LD June 11 2015 DP155 162 m  16.52 from 17.32 LD June 6 - 15 NHATS target - DOU



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. "Distant" is used here to describe an object that has come within ten LD since A/CC began these traffic reports (2007) but is not now so close. 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 27 May '18

The MPC's NEO Confirmation Page has 19 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nineteen objects listed. Of these, five were "one nighters." So far The Tracking News has counted a total of 20 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 27 May '18

Minor Planet Electronic Circulars

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


<< DOU on 27 May '18 >>  MPEC 2018-K97 - "12:05 UT" - Daily Orbit Update


MPEC 2018-K96 - "11:34 UT" - 2018 KY2


<< OOC on 27 May '18 -- MPEC 2018-K95 - "03:20 UT" - Observations and Orbits of Comets

Observers  on 27 May '18

A total of 98 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 14 in MPEC 2018-K95 -- C/2018 EF9, C/2017 S3, C/2017 M4, C/2017 K6, C/2016 R2, C/2016 M1, C/2016 A1, C/2015 O1, 185P, 158P, 143P, 125P, 48P, 30P
C97Al-Fulaij Obs., 3 in MPEC 2018-K95 -- C/2016 R2, C/2016 N6, C/2015 O1
K40Altdorf Obs. in Germany, 9 in MPEC 2018-K95 -- C/2018 C2, C/2018 A3, C/2017 M4, C/2016 R2, C/2016 N6, C/2015 O1, 364P, 74P, 21P
T05ATLAS Haleakala in Hawaii, 20 in MPEC 2018-K95 -- P/2018 H2, C/2018 C2, C/2018 A3, C/2017 M4, C/2017 E3, C/2016 R2, C/2016 N6, C/2016 M1, C/2015 O1, C/2014 R3, C/2013 V4, C/2010 U3, 365P, 364P, 186P, 183P, 143P, 105P, 74P, 37P
T08ATLAS Mauna Loa in Hawaii, 24 in MPECs 2018-K95 & 2018-K97 -- P/2018 H2, C/2018 C2, C/2018 A3, P/2017 W3, C/2017 M4, C/2017 E3, C/2017 D3, C/2016 N6, C/2014 R3, 66391, 467309, 25916, 13553, 7889, 719, 364P, 334P, 186P, 183P, 143P, 125P, 105P, 74P, 24P
I47Auger Obs. in Argentina, 13 in MPEC 2018-K95 -- C/2017 B3, C/2016 M1, C/2015 V2, 186P, 143P, 78P, 66P, 65P, 48P, 37P, 30P, 29P, 21P
C86Blanes Obs. in Spain, 3 in MPEC 2018-K95 -- C/2016 R2, C/2016 N6, C/2015 O1
Q68Blue Mountains Obs. in New South Wales, 4 in MPEC 2018-K95 -- C/2016 M1, 66P, 48P, 37P
215Buchloe Obs. in Germany, 1 in MPEC 2018-K95 -- C/2016 M1
W96Campo Catino Austral Obs. (CAO) in Chile, 17 in MPEC 2018-K95 -- C/2018 E1, C/2018 C2, C/2017 M4, C/2017 B3, C/2016 M1, C/2015 V2, C/2015 V1, C/2014 B1, 186P, 143P, 74P, 66P, 48P, 37P, 30P, 29P, 21P
X74Campo dos Amarais Obs., 1 in MPEC 2018-K97 -- 136839
160Castelmartini Obs. in Italy, 36 in MPECs 2018-K95 & 2018-K97 -- 2018 KN2, 2018 KM1, 2018 JK3, 2018 JE1, 2018 JA, C/2018 C2, C/2018 A3, 2015 XK1, C/2015 O1, 2014 WG365, 68950, 66391, 467309, 455550, 450648, 365246, 25916, 220839, 15745, 152637, 139345, 13553, 7889, 1627, 719, 365P, 364P, 235P, 183P, 143P, 125P, 105P, 74P, 62P, 30P, 21P
703Catalina Sky Survey (CSS) in Arizona, 17 in MPECs 2018-K95 & 2018-K96 -- 2018 KY2, P/2018 H2, C/2018 F4, C/2018 C2, C/2018 A3, C/2017 K1, C/2017 E3, C/2016 N6, C/2015 O1, 365P, 364P, 334P, 250P, 125P, 78P, 48P, 30P
107Cavezzo Obs. in Italy, 2 in MPEC 2018-K95 -- C/2015 O1, 74P
309'Martin Altmann in Germany via Cerro Paranal in Chile, 1 in MPEC 2018-K95 -- C/2017 K1
807.Scott Sheppard via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2018-K95 -- P/2017 D4
A77Chante-Perdrix Obs. in France, 5 in MPEC 2018-K95 -- C/2017 M4, C/2016 N6, C/2016 M1, C/2015 O1, 74P
J01Cielo Profundo Obs. in Spain, 11 in MPEC 2018-K95 -- C/2018 EF9, C/2018 C2, C/2018 A3, C/2017 K2, C/2016 N6, C/2016 M1, C/2015 O1, 187P, 74P, 30P, 21P
850Cordell-Lorenz Obs. in Tennessee, 3 in MPEC 2018-K95 -- C/2016 M1, 74P, 21P
Z39Costa Teguise Obs. in the Canary Islands, 3 in MPEC 2018-K95 -- C/2016 N6, C/2015 O1, 364P
K87Dettelbach Vineyard Obs. in Germany, 2 in MPEC 2018-K95 -- C/2017 M4, C/2015 O1
G37Discovery Channel Telescope in Arizona, 1 in MPEC 2018-K95 -- 46P
K02Eastwood Obs. in England, 11 in MPEC 2018-K95 -- C/2018 C2, C/2017 M4, C/2017 E3, C/2016 N6, C/2016 M1, C/2016 A1, C/2015 O1, 364P, 74P, 62P, 21P
K77EHB01 Obs., 5 in MPEC 2018-K95 -- C/2018 EF9, C/2016 R2, C/2016 N4, C/2014 R3, 334P
J27El Guijo Obs. in Spain, 1 in MPEC 2018-K95 -- 74P
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPEC 2018-K95 -- C/2017 M5, 24P
E85Farm Cove Obs. in New Zealand, 4 in MPEC 2018-K95 -- C/2018 A6, P/2017 W3, C/2014 B1, 183P
157Frasso Sabino Obs. in Italy, 1 in MPEC 2018-K95 -- C/2018 C2
K97Freconrupt Obs., 8 in MPEC 2018-K95 -- C/2018 C2, C/2017 M4, C/2016 R2, C/2016 N6, C/2016 M1, C/2015 O1, 74P, 21P
G26Fushan Obs. in China, 4 in MPEC 2018-K95 -- C/2016 N6, C/2016 M1, C/2015 O1, 21P
372Geisei Obs. in Japan, 6 in MPEC 2018-K95 -- C/2018 A3, C/2016 R2, C/2016 M1, C/2015 O1, C/2014 W2, 24P
190Gissar Obs. in Tajikistan, 1 in MPEC 2018-K95 -- C/2016 N6
K73Gravina Obs. in Italy, 1 in MPEC 2018-K95 -- 364P
A17Guidestar Obs. in Germany, 1 in MPEC 2018-K97 -- 2018 KN2
K25Haute Provence Sud Obs. in France, 3 in MPEC 2018-K95 -- C/2018 C2, C/2017 M4, 105P
D88Hiratsuka Obs. in Japan, 11 in MPEC 2018-K95 -- C/2018 C2, C/2018 A3, C/2017 E3, C/2016 N6, C/2015 O1, C/2014 R3, C/2014 B1, C/2010 U3, 143P, 105P, 74P
750Hobbs Obs. in Wisconsin, 3 in MPEC 2018-K95 -- C/2016 R2, C/2016 N6, C/2010 U3
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2018-K95 -- C/2016 R2
D44Ishigakijima Obs. in Japan, 1 in MPEC 2018-K97 -- 2018 KR2
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2018-K95 -- 24P
H06iTelescope Obs. Mayhill in New Mexico, 2 in MPEC 2018-K95 -- C/2018 EF9, 21P
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 3 in MPEC 2018-K95 -- C/2018 EF9, C/2017 K5, C/2017 K2
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 16 in MPEC 2018-K95 -- C/2018 E2, 2017 U7, C/2017 S7, C/2017 K6, C/2017 K4, C/2017 K1, C/2017 B3, P/2016 A3, C/2013 X1, 245P, 234P, 215P, 158P, 137P, 66P, 38P
Q626Erik Bryssinck in Belgium via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-K95 -- C/2016 M1
Q62<program code "<" (37) via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-K95 -- C/2017 B3
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2018-K95 -- C/2018 C2
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 6 in MPEC 2018-K97 -- 2018 KK2, 2018 JW1, 2018 JN, 2017 BD29, 2015 HF11, 2004 XE6
D95Kurihara Obs. in Japan, 13 in MPEC 2018-K95 -- C/2018 A3, C/2017 K1, C/2017 E3, C/2016 N6, C/2016 M1, C/2015 O1, 365P, 235P, 143P, 74P, 48P, 30P, 21P
J38La Vara Obs. in Spain, 5 in MPEC 2018-K95 -- C/2016 N6, C/2015 O1, C/2010 U3, 74P, 21P
Z43Landehen Obs., 1 in MPEC 2018-K95 -- C/2018 C2
W79LCO Cerro Tololo Aqawan B#1 in Chile, 1 in MPEC 2018-K97 -- 467309
K22Les Barres Obs. in France, 1 in MPEC 2018-K95 -- 21P
K60Lindby Obs. in Sweden, 6 in MPEC 2018-K95 -- C/2017 M4, C/2016 N6, C/2016 N4, 74P, 62P, 24P
C10Maisoncelles Obs. in France, 17 in MPEC 2018-K95 -- C/2018 EF9, C/2018 C2, C/2017 S3, C/2017 M5, C/2017 M4, C/2017 K2, C/2016 R2, C/2016 N6, C/2016 M1, C/2015 O1, 334P, 187P, 74P, 48P, 30P, 29P, 21P
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPEC 2018-K95 -- C/2018 F4, C/2017 F2
Z50Mazariegos Obs., 2 in MPEC 2018-K95 -- C/2016 N6, C/2015 O1
K10Micro Palomar Obs., 2 in MPEC 2018-K95 -- C/2018 C2, C/2015 O1
152Moletai Obs. in Lithuania, 1 in MPEC 2018-K95 -- C/2016 N6
213Montcabre Obs. in Spain, 4 in MPEC 2018-K95 -- C/2018 C2, C/2017 M4, C/2016 M1, 21P
474Mt. John Obs. in New Zealand, 2 in MPEC 2018-K95 -- C/2018 E2, C/2017 W2
G96Mt. Lemmon Survey (MLS) in Arizona, 19 in MPECs 2018-K95 & 2018-K96 -- 2018 KY2, C/2018 F4, C/2018 F1, C/2018 C2, C/2018 A3, C/2017 O1, C/2017 F2, C/2017 D3, C/2015 O1, 365P, 334P, 315P, 215P, 162P, 137P, 125P, 62P, 48P, 30P
628Mulheim-Ruhr Obs. in Germany, 3 in MPEC 2018-K95 -- C/2018 C2, C/2017 M4, 21P
D81Nagano Obs. in Japan, 27 in MPEC 2018-K95 -- C/2018 EF9, C/2018 C2, C/2018 A3, C/2017 S3, C/2017 M5, C/2017 M4, C/2017 K2, C/2017 E3, C/2016 R2, C/2016 N6, C/2016 N4, C/2016 M1, C/2016 A1, C/2015 O1, C/2014 R3, C/2014 OE4, C/2014 B1, C/2010 U3, 365P, 334P, 143P, 105P, 74P, 48P, 37P, 29P, 21P
0895N.V. Maigurova via Nikolaev Obs. in Ukraine, 1 in MPEC 2018-K95 -- C/2015 O1
C47Nonndorf Obs. in Austria, 8 in MPEC 2018-K95 -- C/2018 C2, C/2018 A3, C/2017 M4, C/2016 N6, C/2016 N4, C/2015 O1, 74P, 21P
423North Ryde Obs. in New South Wales, 1 in MPEC 2018-K95 -- C/2017 B3
Z80Northolt Branch Obs. in England, 2 in MPEC 2018-K95 -- C/2016 N6, 21P
C23Olmen Obs. in Belgium, 28 in MPECs 2018-K95 & 2018-K97 -- C/2018 F1, C/2018 C2, C/2018 A6, C/2018 A3, C/2017 O1, C/2017 M4, C/2017 K2, C/2017 E3, C/2017 D3, C/2016 R2, C/2016 N6, C/2016 N4, C/2016 M1, C/2016 A1, C/2015 O1, C/2014 OE4, C/2014 B1, C/2010 U3, 66391, 365P, 364P, 143P, 125P, 105P, 74P, 62P, 30P, 21P
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2018-K95 -- C/2018 F4
I41Palomar Transient Factory in southern California, 1 in MPEC 2018-K95 -- C/2018 C2
F51Pan-STARRS 1 (PS1) in Hawaii, 12 in MPECs 2018-K95 & 2018-K97 -- C/2018 A3, C/2017 M4, C/2017 K2, P/2016 A3, C/2015 O1, 138847, 350P, 315P, 230P, 215P, 187P, 24P
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2018-K95 -- 105P
D29Purple Mtn. Obs. Xuyi Station in China, 7 in MPEC 2018-K95 -- P/2018 H2, C/2018 A6, P/2017 W3, C/2017 E3, P/2016 A3, 350P, 30P
W71Rand II Obs. in New York, 2 in MPEC 2018-K97 -- 2018 EJ4, 2018 BY2
071Rhozen Obs. in Bulgaria, 9 in MPEC 2018-K95 -- C/2018 A3, C/2017 O1, C/2016 R2, C/2016 N6, C/2015 V1, C/2015 O1, C/2015 ER61, C/2011 KP36, C/2010 U3
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2018-K96 & 2018-K97 -- 2018 KY2, 2018 JK3, 2018 JA, 2018 EJ4
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2018-K95 -- C/2018 F1
K14Sencelles Obs. in Spain, 3 in MPEC 2018-K95 -- C/2018 C2, C/2016 N6, C/2015 O1
Q11Shinshiro Obs., 44 in MPEC 2018-K95 -- P/2018 H2, C/2018 F4, C/2018 EF9, C/2018 C2, C/2018 A6, C/2018 A3, P/2017 W3, C/2017 S3, C/2017 O1, C/2017 M5, C/2017 M4, C/2017 K4, C/2017 K2, C/2017 E3, C/2017 D3, C/2016 N6, C/2016 N4, C/2016 M1, C/2016 A1, C/2015 O1, C/2014 R3, C/2014 OE4, C/2014 B1, C/2010 U3, 365P, 364P, 235P, 187P, 183P, 158P, 145P, 143P, 137P, 125P, 105P, 78P, 74P, 62P, 48P, 37P, 30P, 29P, 24P, 21P
G40(program code "(" (17) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-K95 -- 21P
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 14 in MPEC 2018-K95 -- C/2018 A3, C/2017 M5, C/2017 K2, C/2017 D3, C/2016 R2, C/2016 N6, C/2016 M1, C/2015 O1, 364P, 187P, 143P, 74P, 30P, 21P
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 7 in MPEC 2018-K95 -- C/2017 B3, C/2015 V2, 130P, 105P, 66P, 38P, 37P
W884G. Gasparovic in Croatia via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-K95 -- 66P
Y00SONEAR in Brazil, 4 in MPECs 2018-K95 & 2018-K97 -- C/2017 E3, 66391, 66P, 37P
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2018-K95 -- P/2018 C1, 215P, 162P, 78P
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2018-K95 & 2018-K97 -- 2018 KQ1, 2018 JD5, 2018 GL1, 2018 EJ4, 2015 MB54, 2015 DP155, 2014 HQ124, 253062, 64P
K21St. Saturnin les Avignon Obs. in France, 2 in MPEC 2018-K95 -- 105P, 74P
C36Starry Wanderer Obs. in Belarus, 2 in MPEC 2018-K95 -- C/2017 M4, 21P
I52Steward Obs. Mt. Lemmon Station in Arizona, 9 in MPECs 2018-K96 & 2018-K97 -- 2018 KY2, 2018 KS2, 2018 KN2, 2018 KL1, 2018 KB1, 2018 JJ3, 2018 JG2, 2018 JE5, 2018 JD2
A71Stixendorf Obs. in Austria, 18 in MPEC 2018-K95 -- P/2018 H2, C/2018 F1, C/2018 EF9, C/2018 C2, C/2017 S3, C/2017 M4, C/2017 K2, C/2017 D3, C/2016 R2, C/2016 N6, C/2016 M1, C/2016 C1, C/2015 O1, C/2014 B1, 364P, 105P, 74P, 21P
Q23Sukagawa Obs., 9 in MPEC 2018-K95 -- C/2018 C2, C/2017 S3, C/2017 M4, C/2016 M1, C/2015 O1, 143P, 74P, 48P, 21P
Q38Swan Hill Obs., 3 in MPEC 2018-K95 -- C/2016 M1, 66P, 48P
461SZTE Asteroid Program in Hungary, 11 in MPEC 2018-K95 -- C/2018 F4, C/2018 C2, C/2017 S3, C/2017 M4, C/2017 K2, C/2017 K1, C/2017 E3, C/2016 E1, C/2016 C1, C/2015 X5, C/2010 U3
J22Tacande Obs. in the Canary Islands, 12 in MPEC 2018-K95 -- C/2018 F1, C/2018 C2, C/2018 A3, C/2016 N6, C/2016 N4, C/2016 M1, C/2010 U3, 365P, 364P, 235P, 62P, 48P
I81Tarbatness Obs. in Scotland, 17 in MPEC 2018-K95 -- C/2018 EF9, C/2018 C2, C/2018 A3, C/2017 S3, C/2017 M4, C/2017 K2, C/2016 R2, C/2016 N6, C/2016 N4, C/2016 M1, C/2016 A1, C/2015 O1, 364P, 105P, 74P, 30P, 21P
A98Taurus-1 Obs. in Belarus, 2 in MPEC 2018-K95 -- C/2017 M4, 21P
C35Terrassa Obs. in Spain, 3 in MPEC 2018-K95 -- C/2016 N6, C/2015 O1, 74P
H32Texas A&M Physics Obs. in Texas, 1 in MPEC 2018-K95 -- C/2018 C2
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-K97 -- 2018 HF2
Z55Uraniborg Obs., 3 in MPEC 2018-K95 -- C/2016 N6, 364P, 143P
K41Vegaquattro Obs. in Italy, 1 in MPEC 2018-K95 -- 331P
H47Vicksburg Obs. in Mississippi, 5 in MPEC 2018-K95 -- C/2017 M4, C/2017 E3, C/2016 M1, 48P, 21P
C51WISE in Earth polar orbit, 3 in MPEC 2018-K95 -- C/2017 M4, C/2015 O1, 48P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 May '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
2018 KY2JPL Sentry16412075-211522.22587e-08-8.94-8.970JPL: Computed at 05:58 today Pacific time based on 16 observations spanning 4.6050 days (2018-May-21.29062 to 2018-May-25.89566). Diameter approximately 0.013 km. from weighted mean H=27.13.
2018 JNJPL Sentry16412100-211221.6534e-06-6.19-6.470JPL: Computed at 07:03 today Pacific time based on 146 observations spanning 22.033 days (2018-May-05.42349 to 2018-May-27.45623). Diameter approximately 0.033 km. from weighted mean H=25.08.

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 27 May '18

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

1928Generated Traffic Report
1641Noted that JPL Sentry has updated its 2018 JN risk assessment - see above
Noted that JPL Sentry has posted 2018 KY2 as an impact risk - see above
Grabbed MPEC 2018-K96 - 2018 KY2 - see above
Grabbed MPEC 2018-K97 - Daily Orbit Update - see above
0400Grabbed MPEC 2018-K95 - Observations and Orbits of Comets - see above