Contents  on 14 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 14 September '18

23 objects reported inside ten LD

There are 23 objects reported inside ten lunar distances (LD) of Earth today. Nearest are 2018 RE5, which enters Earth's sphere of gravitational influence (SOI), moving in from 4.25 to 1.57 LD, and 2018 RE3, which exits the SOI, traveling out from 2.13 to 3.84 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
0.13 LD Sept. 12 2018 RZ5 4 m  5.19 to 9.65 LD Sept. 10 - 15 NEW, intruder - MPEC
0.44 LD Sept. 8 2018 RW 3 m  7.72 to 9.04 LD Aug. 31 - tomorrow intruder, NHATS target, risk
0.47 LD Sept. 12 2018 RY5 18 m  6.84 to 12.15 LD Sept. 10 - 14 NEW, intruder, exits ten LD - MPEC
0.58 LD Sept. 9 2018 RC 36 m  5.15 to 6.27 LD Aug. 31 - Sept. 18 intruder, NHATS target - DOU
1.48 LD tomorrow 2018 RE5 11 m  1.57 from 4.25 LD Sept. 12 - 18 Moon buzzer, enters Earth SOI - DOU
1.52 LD Sept. 16 2018 RB6 24 m  3.97 from 6.87 LD Sept. 12 - 19 NEW - MPEC
1.64 LD Sept. 12 2018 RT5 22 m  4.15 to 6.11 LD Sept. 7 - 16 NEW - MPEC
1.84 LD yesterday 2018 RE3 13 m  2.13 to 3.84 LD Sept. 9 - 17 NHATS target, exits Earth SOI - DOU
2.28 LD Sept. 9 2018 RD4 7 m  6.36 to 7.63 LD Sept. 2 - 16 NHATS target
2.40 LD Sept. 10 2018 RA1 18 m  7.20 to 9.36 LD Sept. 6 - 15
2.41 LD Sept. 17 2018 RK6 8 m  4.23 from 5.46 LD Sept. 10 - 24 NEW - MPEC
2.45 LD Sept. 11 2018 RB1 10 m  5.02 to 6.67 LD Sept. 6 - 16 NHATS target
3.22 LD Sept. 12 2018 RR4 13 m  4.34 to 5.86 LD Sept. 7 - 17 DOU
4.01 LD Sept. 10 2018 RF2 9 m  9.71 to 11.98 LD Sept. 6 - 14 exits ten LD
4.06 LD Sept. 24 2018 RQ1 52 m  7.94 from 8.55 LD Sept. 11 - Oct. 8 NHATS target, risk
4.33 LD Sept. 11 2018 RP5 20 m  8.58 to 11.35 LD Sept. 8 - 14 NEW, exits ten LD, risk - MPEC
4.39 LD Sept. 12 2018 RD5 23 m  5.17 to 6.07 LD Sept. 5 - 18 NHATS target - DOU
4.49 LD Sept. 16 2018 RG5 14 m  5.57 from 6.84 LD Sept. 11 - 21 NHATS target
4.71 LD Sept. 12 2018 RA6 28 m  5.61 to 7.60 LD Sept. 9 - 15 NEW
5.28 LD Sept. 9 2018 RO5 29 m  8.37 to 9.66 LD Sept. 4 - 15 NEW - MPEC
7.4   LD Sept. 9* 2018 RR5 20 m  9.1 to 9.8 LD Sept. 3 - 15 NEW, EPU +/- 5 mins.* - MPEC
8.00 LD Sept. 16 2018 RA2 27 m  8.84 from 9.92 LD yesterday - Sept. 19 NHATS target - DOU
9.73 LD tomorrow 2018 RQ2 89 m  9.80 from 10.65 LD today - Sept. 16 enters ten LD - DOU

This report was generated at 2310 UTC with the recovery of already departed 2015 SW6 (MPEC) and eleven discoveries (see the active traffic tables above/below for details): approaching 2018 RH6 (MPEC); inbound objects 2018 RK6 (MPEC) and 2018 RB6 (MPEC); two outbound intruders: 2018 RZ5 (MPEC), which skimmed past our planet at 0.13 LD (and the Moon at 0.52 LD) on September 12th, and 2018 RY5 (MPEC); risk-listed outbound 2018 RP5 (MPEC); four other outbound objects: 2018 RT5 (MPEC), 2018 RR5 (MPEC), 2018 RO5 (MPEC), and 2018 RA6 (MPEC); and departed 2018 RD6 (MPEC), which went by us at about 4.8 LD on September 4th. Today's DOU MPEC has follow-up for seven objects in the active traffic tables and another seven that have departed: risk-listed intruder 2018 RR1, three other risk listed objects: 2018 RF5, 2018 RY3, 2018 RH3, plus 2018 RO1, 2018 RA, and 2018 LQ2, along with two distant objects: 2007 VD12 and 450894 2008 BT18.

Approaching Traffic - sorted by 10-LD bubble entry date
8.50 LD Sept. 20 2017 SL16 23 m  11.96 from 13.00 LD Sept. 17 - 24 NHATS target
8.6   LD Sept. 22* 2018 RH6 11 m  13.6 from 14.7 LD Sept. 19 - 26 NEW, EPU +/- 11 mins.* - MPEC
* EPU = Earth passage uncertainty



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 objects that have approached Earth within ten LD since A/CC began these traffic reports eleven years ago but are not presently coming 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 14 September '18

The MPC's NEO Confirmation Page has 61 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 61 objects listed. Of these, 23 were "one nighters." The Tracking News counted a total of 92 listings on the NEOCP on this day.

New MPECs  on 14 September '18

Minor Planet Electronic Circulars

There were 33 MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-R177 - "22:16 UT" - 2018 RA6


MPEC 2018-R176 - "21:57 UT" - 2015 BF519


MPEC 2018-R175 - "21:55 UT" - 2014 YD50


MPEC 2018-R174 - "21:52 UT" - 2014 OS394


MPEC 2018-R173 - "21:49 UT" - 2014 OF394


MPEC 2018-R172 - "20:47 UT" - 2018 RL6


MPEC 2018-R171 - "20:43 UT" - 2018 RK6


MPEC 2018-R170 - "20:39 UT" - 2018 RJ6


MPEC 2018-R169 - "20:35 UT" - 2018 RH6


MPEC 2018-R168 - "20:17 UT" - 2018 RG6


MPEC 2018-R167 - "20:12 UT" - 2018 RF6


MPEC 2018-R166 - "20:08 UT" - 2018 RE6


MPEC 2018-R165 - "20:04 UT" - 2018 RD6


MPEC 2018-R164 - "19:59 UT" - 2018 RC6


MPEC 2018-R163 - "19:55 UT" - 2018 RB6


MPEC 2018-R162 - "19:28 UT" - 2018 RZ5


MPEC 2018-R161 - "19:24 UT" - 2018 RY5


MPEC 2018-R160 - "19:05 UT" - 2018 RV5


MPEC 2018-R159 - "19:00 UT" - 2018 RX5


MPEC 2018-R158 - "18:55 UT" - 2018 RW5


MPEC 2018-R157 - "18:50 UT" - 2018 RU5


MPEC 2018-R156 - "18:34 UT" - 2018 RT5


MPEC 2018-R155 - "18:29 UT" - 2018 RO5


MPEC 2018-R154 - "18:19 UT" - 2018 RS5


MPEC 2018-R153 - "18:15 UT" - 2018 RR5


MPEC 2018-R152 - "18:11 UT" - 2018 RQ5


MPEC 2018-R151 - "18:06 UT" - 2018 RP5


MPEC 2018-R150 - "14:10 UT" - 2015 SW6


MPEC 2018-R149 - "13:50 UT" - 2017 KP34


MPEC 2018-R148 - "13:47 UT" - 2013 LB


MPEC 2018-R147 - "13:44 UT" - 2008 WP1


MPEC 2018-R146 - "13:42 UT" - 2002 CY9


<< DOU on 14 Sept. '18 >>  MPEC 2018-R145 - "12:07 UT" - Daily Orbit Update

Observers  on 14 September '18

A total of 49 observers appeared in this day's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 3 in MPECs 2018-R152, 2018-R153 & 2018-R161 -- 2018 RY5, 2018 RR5, 2018 RQ5
H21Astronomical Research Obs. Westfield in Illinois, 26 in MPECs 2018-R145, 2018-R152, 2018-R155, 2018-R156, 2018-R157, 2018-R158, 2018-R159, 2018-R160, 2018-R161, 2018-R163, 2018-R165, 2018-R166, 2018-R168, 2018-R169 & 2018-R170 -- 2018 RY5, 2018 RY, 2018 RX5, 2018 RW5, 2018 RV5, 2018 RU5, 2018 RT5, 2018 RQ5, 2018 RO5, 2018 RO1, 2018 RJ6, 2018 RH6, 2018 RG6, 2018 RE6, 2018 RD6, 2018 RB6, 2018 RA, 2018 QU, 2018 PU7, 2018 PK21, 2018 LQ2, 2018 KE3, 2015 BV92, 2013 MR, 276468, 194386
T05ATLAS Haleakala in Hawaii, 3 in MPECs 2018-R145, 2018-R146 & 2018-R155 -- 2018 RQ2, 2018 RO5, 2002 CY9
T08ATLAS Mauna Loa in Hawaii, 6 in MPECs 2018-R145 & 2018-R156 -- 2018 RT5, 2005 RB, 65996, 16834, 144332, 3552
160Castelmartini Obs. in Italy, 12 in MPECs 2018-R145 & 2018-R163 -- 2018 RM, 2018 RD1, 2018 RB6, 2018 LQ2, 2015 AX16, 2011 UA, 2007 RX19, 2005 RB, 2001 SC170, 1999 VQ11, 1999 RB32, 457260
703Catalina Sky Survey (CSS) in Arizona, 51 in MPECs 2018-R145, 2018-R150, 2018-R151, 2018-R152, 2018-R153, 2018-R154, 2018-R155, 2018-R156, 2018-R160, 2018-R161, 2018-R162, 2018-R163 & 2018-R167 -- 2018 RZ5, 2018 RY5, 2018 RX, 2018 RV5, 2018 RT5, 2018 RS5, 2018 RR5, 2018 RQ5, 2018 RQ2, 2018 RP5, 2018 RO5, 2018 RF6, 2018 RC4, 2018 RB6, 2018 QV1, 2018 PK22, 2018 MM8, 2018 KR2, 2015 SW6, 2015 RJ83, 2015 RB82, 2013 EP41, 2012 DG61, 2008 RT26, 2008 CB22, 2003 RC2, 2001 RQ17, 87311, 518463, 468684, 450894, 443923, 422977, 407338, 376788, 350988, 337252, 292165, 267729, 253062, 250697, 17511, 17274, 140039, 13553, 5786, 5751, 5653, 4953, 4401, 4183
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 2 in MPECs 2018-R145 & 2018-R157 -- 2018 RU5, 2018 RR1
113Drebach Obs. in Germany, 2 in MPECs 2018-R155 & 2018-R163 -- 2018 RO5, 2018 RB6
J27El Guijo Obs. in Spain, 1 in MPEC 2018-R145 -- 144332
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2018-R155, 2018-R156 & 2018-R163 -- 2018 RT5, 2018 RO5, 2018 RB6
K88GINOP-KHK in Hungary, 2 in MPECs 2018-R156 & 2018-R163 -- 2018 RT5, 2018 RB6
J95Great Shefford Obs. in England, 17 in MPECs 2018-R145, 2018-R151, 2018-R152, 2018-R155, 2018-R156, 2018-R161, 2018-R163, 2018-R164, 2018-R166, 2018-R167, 2018-R168, 2018-R170, 2018-R171, 2018-R172 & 2018-R177 -- 2018 RY5, 2018 RT5, 2018 RR4, 2018 RQ5, 2018 RP5, 2018 RO5, 2018 RL6, 2018 RK6, 2018 RJ6, 2018 RG6, 2018 RF6, 2018 RE6, 2018 RE3, 2018 RD5, 2018 RC6, 2018 RB6, 2018 RA6
238Grorudalen Obs. in Norway, 1 in MPEC 2018-R145 -- 2015 FP118
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-R161 -- 2018 RY5
H06#M. Suzuki in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-R161 -- 2018 RY5
Q62iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-R161 -- 2018 RY5
W19Kalamazoo Obs. in Michigan, 1 in MPEC 2018-R145 -- 162168
246KLENOT in the Czech Republic, 3 in MPECs 2018-R155, 2018-R163 & 2018-R167 -- 2018 RO5, 2018 RF6, 2018 RB6
Z43Landehen Obs., 5 in MPEC 2018-R145 -- 2018 QU1, 2018 LQ2, 481394, 414960, 162168
Q63LCO Siding Spring A in New South Wales, 1 in MPEC 2018-R162 -- 2018 RZ5
C41MASTER-II Kislovodsk in Russia, 1 in MPEC 2018-R145 -- 115052
118Modra Obs. in Slovakia, 1 in MPEC 2018-R145 -- 2018 RL
474Mt. John Obs. in New Zealand, 7 in MPECs 2018-R151, 2018-R152, 2018-R153, 2018-R154, 2018-R161, 2018-R169 & 2018-R171 -- 2018 RY5, 2018 RS5, 2018 RR5, 2018 RQ5, 2018 RP5, 2018 RK6, 2018 RH6
G96Mt. Lemmon Survey (MLS) in Arizona, 40 in MPECs 2018-R145, 2018-R147, 2018-R148, 2018-R150, 2018-R151, 2018-R157, 2018-R158, 2018-R159, 2018-R163, 2018-R164, 2018-R165, 2018-R166, 2018-R167, 2018-R168, 2018-R169, 2018-R170, 2018-R171 & 2018-R172 -- 2018 RX5, 2018 RX3, 2018 RW5, 2018 RU5, 2018 RP5, 2018 RL6, 2018 RK6, 2018 RJ6, 2018 RH6, 2018 RG6, 2018 RF6, 2018 RE6, 2018 RE5, 2018 RD6, 2018 RC6, 2018 RB6, 2018 QV1, 2018 PE22, 2018 FS3, 2015 VW1, 2015 SW6, 2014 RC11, 2013 RX80, 2013 LB, 2008 WP1, 2005 RB, 2003 RC2, 85774, 483472, 478574, 350988, 288914, 267729, 256412, 253062, 250697, 243566, 163364, 140039, 137044
J69North Obs. in England, 1 in MPEC 2018-R145 -- 2018 RQ2
Z80Northolt Branch Obs. in England, 4 in MPECs 2018-R145, 2018-R155 & 2018-R156 -- 2018 RT5, 2018 RQ2, 2018 RO5, 144332
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2018-R155 -- 2018 RO5
I41Palomar Transient Factory (PTF) in southern California, 13 in MPECs 2018-R145, 2018-R156, 2018-R160 & 2018-R177 -- 2018 RV5, 2018 RT5, 2018 RR4, 2018 RE3, 2018 RA6, 2018 PE22, 2018 KR2, 2016 CE30, 2011 UA, 2003 RM, 337248, 283729, 256412
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2018-R148, 2018-R173, 2018-R174, 2018-R175 & 2018-R176 -- 2015 BF519, 2014 YD50, 2014 OS394, 2014 OF394, 2013 LB
K63Pascoli Obs. in Italy, 3 in MPECs 2018-R155, 2018-R156 & 2018-R163 -- 2018 RT5, 2018 RO5, 2018 RB6
122Pises Obs. in France, 6 in MPEC 2018-R145 -- 2018 KE3, 2001 SK276, 86324, 518635, 438429, 137125
W98Polonia Obs. in Chile, 1 in MPEC 2018-R145 -- 140039
W71Rand II Obs. in New York, 1 in MPEC 2018-R163 -- 2018 RB6
L04ROASTERR-1 in Romania, 3 in MPECs 2018-R155, 2018-R156 & 2018-R163 -- 2018 RT5, 2018 RO5, 2018 RB6
K61Rokycany Obs. in the Czech Republic, 2 in MPECs 2018-R146 & 2018-R160 -- 2018 RV5, 2002 CY9
104San Marcello Pistoiese Obs. in Italy, 9 in MPECs 2018-R151, 2018-R152, 2018-R155, 2018-R156, 2018-R161, 2018-R163, 2018-R164, 2018-R167 & 2018-R170 -- 2018 RY5, 2018 RT5, 2018 RQ5, 2018 RP5, 2018 RO5, 2018 RJ6, 2018 RF6, 2018 RC6, 2018 RB6
H36Sandlot Obs. in Kansas, 2 in MPECs 2018-R161 & 2018-R168 -- 2018 RY5, 2018 RG6
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2018-R163 -- 2018 RB6
204Schiaparelli Obs. in Italy, 2 in MPEC 2018-R145 -- 2018 RC, 2018 RA
033Schwarzschild Obs. in Germany, 8 in MPECs 2018-R146, 2018-R155, 2018-R158, 2018-R159, 2018-R160, 2018-R163, 2018-R164 & 2018-R167 -- 2018 RX5, 2018 RW5, 2018 RV5, 2018 RO5, 2018 RF6, 2018 RC6, 2018 RB6, 2002 CY9
691Spacewatch 0.9m telescope in Arizona, 5 in MPECs 2018-R145 & 2018-R162 -- 2018 RZ5, 2018 PM22, 2018 LQ2, 2014 PG51, 517829
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2018-R145 & 2018-R162 -- 2018 RZ5, 2018 RY1, 2018 QU, 2018 PZ23, 2018 PG21, 2007 VD12
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2018-R145 & 2018-R163 -- 2018 RB6, 363027
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2018-R145 -- 2015 FP118
I52Steward Obs. Mt. Lemmon Station in Arizona, 33 in MPECs 2018-R145, 2018-R148, 2018-R149, 2018-R150, 2018-R151, 2018-R152, 2018-R153, 2018-R154, 2018-R155, 2018-R157, 2018-R158, 2018-R159, 2018-R160, 2018-R161, 2018-R162, 2018-R163, 2018-R164, 2018-R165, 2018-R166, 2018-R167, 2018-R168, 2018-R169, 2018-R170, 2018-R171 & 2018-R172 -- 2018 RZ5, 2018 RY5, 2018 RY3, 2018 RX5, 2018 RW5, 2018 RV5, 2018 RU5, 2018 RS5, 2018 RR5, 2018 RQ5, 2018 RQ2, 2018 RP5, 2018 RO5, 2018 RO2, 2018 RM4, 2018 RL6, 2018 RK6, 2018 RJ6, 2018 RH6, 2018 RH3, 2018 RG6, 2018 RF6, 2018 RE6, 2018 RD6, 2018 RC6, 2018 RC2, 2018 RB6, 2018 RA2, 2018 PH22, 2018 NE2, 2017 KP34, 2015 SW6, 2013 LB
926Tenagra II Obs. in Arizona, 6 in MPECs 2018-R145, 2018-R147, 2018-R158, 2018-R159, 2018-R164 & 2018-R166 -- 2018 RX5, 2018 RW5, 2018 RF5, 2018 RE6, 2018 RC6, 2008 WP1
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-R145 -- 2018 RR1
L01Visnjan Obs., 7 in MPECs 2018-R146, 2018-R155, 2018-R157, 2018-R160, 2018-R163, 2018-R164 & 2018-R167 -- 2018 RV5, 2018 RU5, 2018 RO5, 2018 RF6, 2018 RC6, 2018 RB6, 2002 CY9
718Wiggins Obs. in Utah, 4 in MPECs 2018-R145 & 2018-R156 -- 2018 RT5, 2018 RQ2, 2018 RM, 144332
754Yerkes Obs. in Wisconsin, 1 in MPEC 2018-R163 -- 2018 RB6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 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
2018 RP5JPL Sentry19342109-210911.179e-08-8.70-8.700JPL: Computed at 12:28 today Pacific time based on 23 observations spanning 1.2655 days (2018-Sep-13.23362 to 2018-Sep-14.499154). Diameter approximately 0.020 km. from weighted mean H=26.18.
2018 RF5JPL Sentry16002069-211546.591e-06-6.66-7.010JPL: Computed at 08:20 today Pacific time based on 25 observations spanning 1.2291 days (2018-Sep-12.23986 to 2018-Sep-13.46895). Diameter approximately 0.011 km. from weighted mean H=27.41.
NEODyS16002069-211571.1e-05-6.30-6.520NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2018-09-12.241 to 2018-09-13.470."
2018 RE5JPL Sentry1600R E M O V E DJPL: Risk listing removed at 1518 UTC today
2018 RQ4NEODyS16002070-2117185.98e-06-6.53-7.080NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2018-09-11.282 to 2018-09-13.397."
2018 RY3NEODyS16002083-210025.64e-09-8.36-8.360NEODyS: "Based on 51 optical observations (of which 0 are rejected as outliers) from 2018-09-10.162 to 2018-09-13.157."
2018 RJ3NEODyS1600207016.71e-06-6.63-6.630NEODyS: "Based on 33 optical observations (of which 0 are rejected as outliers) from 2018-09-09.568 to 2018-09-12.364."
2018 RH3JPL Sentry16002097-209711.629e-08-8.59-8.590JPL: Computed at 08:31 today Pacific time based on 60 observations spanning 4.7454 days (2018-Sep-09.43937 to 2018-Sep-14.18473). Diameter approximately 0.021 km. from weighted mean H=26.05.
NEODyS16002097-210871.96e-08-8.51-8.510NEODyS: "Based on 56 optical observations (of which 0 are rejected as outliers) from 2018-09-09.440 to 2018-09-13.194."
2018 RB2NEODyS16002092-2118793.61e-05-5.89-6.21n/aNEODyS: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2018-09-07.270 to 2018-09-12.261."
2018 RY1JPL Sentry16002040-2102121.491487e-07-6.38-6.490JPL: Computed at 08:27 today Pacific time based on 53 observations spanning 7.0700 days (2018-Sep-07.13874 to 2018-Sep-14.20872). Diameter approximately 0.045 km. from weighted mean H=24.40.
NEODyS16002040-2098174.96e-07-6.00-6.60NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2018-09-07.140 to 2018-09-13.273."
2018 RR1JPL Sentry16002083-2118172.8024365e-05-7.34-7.450JPL: Computed at 08:14 today Pacific time based on 29 observations spanning 3.8716 days (2018-Sep-07.39342 to 2018-Sep-11.26502). Diameter approximately 0.004 km. from weighted mean H=29.90.
2018 RQ1NEODyS1600211413.98e-11-10.49-10.490NEODyS: "Based on 76 optical observations (of which 0 are rejected as outliers) from 2018-09-07.381 to 2018-09-13.405."
2018 QSNEODyS16002084-211631.46e-06-6.66-6.770NEODyS: "Based on 67 optical observations (of which 0 are rejected as outliers) from 2018-08-18.481 to 2018-09-12.330."
2015 XPNEODyS1600206717.71e-07-6.61-6.610NEODyS: "Based on 68 optical observations (of which 0 are rejected as outliers) from 2015-11-07.249 to 2015-12-05.108."
2015 HE183NEODyS16002080-209041.2e-06-7.57-7.650NEODyS: "Based on 14 optical observations (of which 1 are rejected as outliers) from 2015-04-21.385 to 2015-04-26.537."
2015 HW182JPL Sentry16002019-21161775.14965e-08-6.82-7.540JPL: Computed at 21:11 April 14th of 2017 Pacific time based on 9 observations spanning .99990 days (2015-Apr-18.31077 to 2015-Apr-19.31067). Diameter approximately 0.031 km. from weighted mean H=25.20.
2014 EUNEODyS16002080-211755.5e-06-6.95-7.160NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2014-03-05.058 to 2014-03-29.316."

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 14 September '18

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

2310Generated Traffic Report
2230Grabbed MPEC 2018-R177 - 2018 RA6 - see above
2201Grabbed MPEC 2018-R173 - 2014 OF394 - see above
Grabbed MPEC 2018-R174 - 2014 OS394 - see above
Grabbed MPEC 2018-R175 - 2014 YD50 - see above
Grabbed MPEC 2018-R176 - 2015 BF519 - see above
2130Grabbed MPEC 2018-R171 - 2018 RK6 - see above
Grabbed MPEC 2018-R172 - 2018 RL6 - see above
2040Grabbed MPEC 2018-R164 - 2018 RC6 - see above
Grabbed MPEC 2018-R165 - 2018 RD6 - see above
Grabbed MPEC 2018-R166 - 2018 RE6 - see above
Grabbed MPEC 2018-R167 - 2018 RF6 - see above
Grabbed MPEC 2018-R168 - 2018 RG6 - see above
Grabbed MPEC 2018-R169 - 2018 RH6 - see above
Grabbed MPEC 2018-R170 - 2018 RJ6 - see above
2000Grabbed MPEC 2018-R163 - 2018 RB6 - see above
1934Noted that JPL Sentry has posted 2018 RP5 as an impact risk - see above
Grabbed MPEC 2018-R159 - 2018 RX5 - see above
Grabbed MPEC 2018-R160 - 2018 RV5 - see above
Grabbed MPEC 2018-R161 - 2018 RY5 - see above
Grabbed MPEC 2018-R162 - 2018 RZ5 - see above
1900Grabbed MPEC 2018-R152 - 2018 RQ5 - see above
Grabbed MPEC 2018-R153 - 2018 RR5 - see above
Grabbed MPEC 2018-R154 - 2018 RS5 - see above
Grabbed MPEC 2018-R155 - 2018 RO5 - see above
Grabbed MPEC 2018-R156 - 2018 RT5 - see above
Grabbed MPEC 2018-R157 - 2018 RU5 - see above
Grabbed MPEC 2018-R158 - 2018 RW5 - see above
1810Grabbed MPEC 2018-R151 - 2018 RP5 - see above
1600Noted that NEODyS has updated its 2014 EU risk assessment - see above
Noted that NEODyS has updated its 2015 HE183 risk assessment - see above
Noted that JPL Sentry has updated its 2015 HW182 risk assessment - see above
Noted that NEODyS has updated its 2015 XP risk assessment - see above
Noted that NEODyS has updated its 2018 QS risk assessment - see above
Noted that NEODyS has updated its 2018 RB2 risk assessment - see above
Noted that JPL Sentry has removed 2018 RE5 as an impact risk - see above
Noted that JPL Sentry has updated its 2018 RF5 risk assessment - see above
Noted that NEODyS has posted 2018 RF5 as an impact risk - see above
Noted that JPL Sentry has updated its 2018 RH3 risk assessment - see above
Noted that NEODyS has updated its 2018 RH3 risk assessment - see above
Noted that NEODyS has updated its 2018 RJ3 risk assessment - see above
Noted that NEODyS has reposted 2018 RQ1 as an impact risk - see above
Noted that NEODyS has posted 2018 RQ4 as an impact risk - see above
Noted that JPL Sentry has updated its 2018 RR1 risk assessment - see above
Noted that JPL Sentry has updated its 2018 RY1 risk assessment - see above
Noted that NEODyS has updated its 2018 RY1 risk assessment - see above
Noted that NEODyS has posted 2018 RY3 as an impact risk - see above
Grabbed MPEC 2018-R145 - Daily Orbit Update - see above
Grabbed MPEC 2018-R146 - 2002 CY9 - see above
Grabbed MPEC 2018-R147 - 2008 WP1 - see above
Grabbed MPEC 2018-R148 - 2013 LB - see above
Grabbed MPEC 2018-R149 - 2017 KP34 - see above
Grabbed MPEC 2018-R150 - 2015 SW6 - see above