Contents  on 22 August '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 22 August '18

Six objects reported inside ten LD

There are six asteroids reported within ten lunar distances (LD) of Earth today. Nearest is outbound risk-listed 2018 QE, which moves from 3.36 to 3.99 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
2.80 LD Aug. 20 2018 QE 9 m  3.36 to 3.99 LD Aug. 10 - 29 NHATS target, risk
6.21 LD Aug. 9 2018 PN22 11 m  9.31 to 9.73 LD July 25 - tomorrow NHATS target
6.60 LD Aug. 19 2018 QZ 53 m  8.85 to 10.39 LD Aug. 15 - 22 NEW, exits ten LD - MPEC
7.80 LD tomorrow 2018 PU23 8 m  7.80 from 7.82 LD Aug. 7 - Sept. 13 NHATS target, risk
7.88 LD Aug. 18 2018 PK20 23 m  9.92 to 11.14 LD Aug. 15 - 22 NHATS target, exits ten LD
9.36 LD Aug. 27 2018 LQ2 37 m  9.50 from 9.57 LD Aug. 17 - Sept. 6 NHATS target
Approaching Traffic
4.22 LD Aug. 29 1998 SD9 49 m  15.75 from 18.09 LD Aug. 25 - Sept. 2 radar target

This report was generated at 1844 UTC with the discoveries of outbound 2018 QZ (MPEC) and already departed objects 2018 QX (MPEC), which flew past us at about 5.5 LD on August 10th, and risk-listed 2018 QS (MPEC), which went by at 4.49 LD on the 14th. Today's DOU MPEC has follow-up for departed risk-listed objects 2018 MC7 and 2018 NJ (25.74 days added to 10.34-day observation span), and for distant 450894 2008 BT18.


<< Reading:  There's a new way to detect bright meteors day and night, an unplanned benefit from a new family of NOAA/NASA weather satellites as explained in a NASA news item and a science paper (abstract/PDF). GOES-16 (first in the GOES-R series) is now in the GOES East geostationary position and has an instrument called the Geostationary Lightning Mapper (GLM) that records lightning at 500 frames per second and also meteors brighter than, for comparison, the full Moon. This GLM has a view of most of the continental U.S., most of Latin America, and good portions of the Pacific and Atlantic oceans. A sister instrument now in orbit on GOES-17 will cover all of the western U.S. and most of the eastern Pacific when that spacecraft moves into the GOES West position.



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 approached Earth within ten LD since A/CC began these traffic reports eleven years ago but is not currently 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 22 August '18

The MPC's NEO Confirmation Page has 33 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 33 objects listed. Of these, twelve were "one nighters." So far The Tracking News has counted a total of 54 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 22 August '18

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 21 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-Q61 - "15:41 UT" - 2018 QY


MPEC 2018-Q60 - "15:37 UT" - 2018 QO


MPEC 2018-Q59 - "15:34 UT" - 2018 QA1


MPEC 2018-Q58 - "15:30 UT" - 2018 QZ


MPEC 2018-Q57 - "15:26 UT" - 2018 QX


MPEC 2018-Q56 - "15:22 UT" - 2018 QW


MPEC 2018-Q55 - "15:18 UT" - 2018 QV


MPEC 2018-Q54 - "15:13 UT" - 2018 QU


MPEC 2018-Q53 - "15:09 UT" - 2018 QT


MPEC 2018-Q52 - "15:05 UT" - 2018 QS


MPEC 2018-Q51 - "15:01 UT" - 2018 QR


MPEC 2018-Q50 - "14:56 UT" - 2018 QQ


MPEC 2018-Q49 - "14:51 UT" - 2018 QP


MPEC 2018-Q48 - "14:45 UT" - 2018 PS24


MPEC 2018-Q47 - "14:41 UT" - 2018 PR24


MPEC 2018-Q46 - "14:36 UT" - 2018 PQ24


MPEC 2018-Q45 - "14:33 UT" - 2018 PP24


MPEC 2018-Q44 - "13:46 UT" - 2015 QO3


<< DOU on 22 Aug. '18 >>  MPEC 2018-Q43 - "12:04 UT" - Daily Orbit Update


MPEC 2018-Q42 - "08:14 UT" - 2014 PW59


MPEC 2018-Q41 - "08:12 UT" - 2017 UY42

Observers  on 22 August '18

A total of 36 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 2 in MPECs 2018-Q52 & 2018-Q59 -- 2018 QS, 2018 QA1
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2018-Q45, 2018-Q46, 2018-Q48, 2018-Q49, 2018-Q50, 2018-Q51, 2018-Q52, 2018-Q53, 2018-Q54 & 2018-Q55 -- 2018 QV, 2018 QU, 2018 QT, 2018 QS, 2018 QR, 2018 QQ, 2018 QP, 2018 PS24, 2018 PQ24, 2018 PP24
T05ATLAS Haleakala in Hawaii, 18 in MPECs 2018-Q43 & 2018-Q59 -- 2018 QA1, 2018 PJ22, 2018 MM8, 2018 LZ5, 2015 RJ83, 2015 AX16, 2013 EP41, 2012 UV27, 2011 GA62, 2005 RB, 68950, 418929, 283729, 163818, 162215, 162168, 13553, 1865
T08ATLAS Mauna Loa in Hawaii, 14 in MPECs 2018-Q43 & 2018-Q52 -- 2018 QS, 2018 NU3, 99799, 54789, 517829, 450894, 410088, 18109, 17511, 17274, 136849, 6569, 4183, 1627
160Castelmartini Obs. in Italy, 8 in MPEC 2018-Q43 -- 2018 KE3, 2013 EP41, 2011 GA62, 2001 SC170, 87311, 438429, 418929, 414960
309&Marco Micheli via Cerro Paranal in Chile, 2 in MPEC 2018-Q43 -- 2018 NJ, 2018 MC7
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPECs 2018-Q46, 2018-Q47, 2018-Q48 & 2018-Q60 -- 2018 QO, 2018 PS24, 2018 PR24, 2018 PQ24
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2018-Q43 -- 2018 PJ22
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2018-Q52 -- 2018 QS
I19El Gato Gris Obs. in Argentina, 1 in MPEC 2018-Q52 -- 2018 QS
595Farra d'Isonzo Obs. in Italy, 4 in MPECs 2018-Q52, 2018-Q56, 2018-Q59 & 2018-Q61 -- 2018 QY, 2018 QW, 2018 QS, 2018 QA1
K88GINOP-KHK in Hungary, 8 in MPECs 2018-Q49, 2018-Q50, 2018-Q52, 2018-Q53, 2018-Q55, 2018-Q56, 2018-Q59 & 2018-Q61 -- 2018 QY, 2018 QW, 2018 QV, 2018 QT, 2018 QS, 2018 QQ, 2018 QP, 2018 QA1
J95Great Shefford Obs. in England, 4 in MPECs 2018-Q52, 2018-Q56, 2018-Q58 & 2018-Q59 -- 2018 QZ, 2018 QW, 2018 QS, 2018 QA1
A17Guidestar Obs. in Germany, 8 in MPECs 2018-Q43 & 2018-Q59 -- 2018 QA1, 2015 AX16, 2005 RB, 1999 VQ11, 481394, 457260, 253062, 9856
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-Q59 -- 2018 QA1
C41MASTER-II Kislovodsk in Russia, 1 in MPEC 2018-Q43 -- 1999 RB32
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPECs 2018-Q45 & 2018-Q46 -- 2018 PQ24, 2018 PP24
Z80Northolt Branch Obs. in England, 1 in MPEC 2018-Q59 -- 2018 QA1
I41Palomar Transient Factory (PTF) in southern California, 4 in MPECs 2018-Q43 & 2018-Q58 -- 2018 QZ, 65996, 283729, 20460
F51Pan-STARRS 1 (PS1) in Hawaii, 30 in MPECs 2018-Q43, 2018-Q45, 2018-Q46, 2018-Q47, 2018-Q48, 2018-Q49, 2018-Q50, 2018-Q51, 2018-Q52, 2018-Q53, 2018-Q54, 2018-Q55, 2018-Q56, 2018-Q57, 2018-Q60 & 2018-Q61 -- 2018 QY, 2018 QX, 2018 QW, 2018 QV, 2018 QU, 2018 QT, 2018 QS, 2018 QR, 2018 QQ, 2018 QP, 2018 QO, 2018 PS24, 2018 PR24, 2018 PQ24, 2018 PP24, 2018 PM22, 2014 QE365, 2008 RT26, 2007 RX19, 68950, 508871, 414960, 376788, 243566, 18109, 17511, 17182, 163250, 140039, 136849
K63Pascoli Obs. in Italy, 1 in MPEC 2018-Q59 -- 2018 QA1
K80Platanus Obs., 1 in MPEC 2018-Q59 -- 2018 QA1
W71Rand II Obs. in New York, 1 in MPEC 2018-Q59 -- 2018 QA1
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2018-Q50, 2018-Q52, 2018-Q56 & 2018-Q61 -- 2018 QY, 2018 QW, 2018 QS, 2018 QQ
679San Pedro Martir Obs. in Mexico, 1 in MPEC 2018-Q53 -- 2018 QT
H36Sandlot Obs. in Kansas, 1 in MPEC 2018-Q58 -- 2018 QZ
C95SATINO-1 in France, 1 in MPEC 2018-Q43 -- 66391
204Schiaparelli Obs. in Italy, 1 in MPEC 2018-Q52 -- 2018 QS
G40'program code "'" (16) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-Q43 -- 20790
Y00SONEAR in Brazil, 1 in MPEC 2018-Q59 -- 2018 QA1
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2018-Q43, 2018-Q48, 2018-Q49, 2018-Q50, 2018-Q51, 2018-Q52 & 2018-Q60 -- 2018 QS, 2018 QR, 2018 QQ, 2018 QP, 2018 QO, 2018 PU7, 2018 PS24, 2018 PL8, 2018 PK21
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2018-Q52 & 2018-Q59 -- 2018 QS, 2018 QA1
Z52The Studios Obs., 2 in MPEC 2018-Q43 -- 13553, 6456
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2018-Q41 & 2018-Q44 -- 2017 UY42, 2015 QO3
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2018-Q42 -- 2014 PW59
L01Visnjan Obs., 12 in MPECs 2018-Q48, 2018-Q49, 2018-Q50, 2018-Q51, 2018-Q52, 2018-Q53, 2018-Q54, 2018-Q55, 2018-Q56, 2018-Q57, 2018-Q59 & 2018-Q61 -- 2018 QY, 2018 QX, 2018 QW, 2018 QV, 2018 QU, 2018 QT, 2018 QS, 2018 QR, 2018 QQ, 2018 QP, 2018 QA1, 2018 PS24
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 August '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 QTNEODyS2006210914.45e-09-6.42-6.420NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2018-08-18.566 to 2018-08-22.031."
JPL Sentry16302109-211642.5395e-08-5.70-6.060JPL: Computed at 09:29 today Pacific time based on 22 observations spanning 3.4652 days (2018-Aug-18.5649 to 2018-Aug-22.03012). Diameter approximately 0.264 km. from weighted mean H=20.53.
2018 QSNEODyS20062084-211621.57e-06-6.58-6.650NEODyS: "Based on 48 optical observations (of which 0 are rejected as outliers) from 2018-08-18.481 to 2018-08-22.299."
JPL Sentry17112084-211621.02627e-06-6.74-6.750JPL: Computed at 09:30 today Pacific time based on 48 observations spanning 3.8187 days (2018-Aug-18.47984 to 2018-Aug-22.29854). Diameter approximately 0.020 km. from weighted mean H=26.14.
2018 PK21NEODyS1711R E M O V E D-
2018 NJNEODyS17112083-2118444.45e-03-4.01-4.56-NEODyS: "Based on 35 optical observations (of which 1 are rejected as outliers) from 2018-07-05.276 to 2018-08-10.354."
JPL Sentry16302083-2116170.0020898598-4.32-4.330JPL: Computed at 08:30 today Pacific time based on 35 observations spanning 36.078 days (2018-Jul-05.27485 to 2018-Aug-10.352776). Diameter approximately 0.009 km. from weighted mean H=27.81.
2018 MC7NEODyS17112060-2117943.54e-03-3.18-3.670NEODyS: "Based on 50 optical observations (of which 1 are rejected as outliers) from 2018-06-21.395 to 2018-08-11.498."
JPL Sentry16302060-2114260.0024153018-3.31-3.320JPL: Computed at 09:03 today Pacific time based on 48 observations spanning 51.103 days (2018-Jun-21.39443 to 2018-Aug-11.497641). Diameter approximately 0.019 km. from weighted mean H=26.20.

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 22 August '18

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

2006Noted that NEODyS has posted 2018 QS as an impact risk - see above
Noted that NEODyS has posted 2018 QT as an impact risk - see above
1844Generated Traffic Report
1711Noted that NEODyS has updated its 2018 MC7 risk assessment - see above
Noted that NEODyS has updated its 2018 NJ risk assessment - see above
Noted that NEODyS has removed 2018 PK21 as an impact risk - see above
Noted that JPL Sentry has posted 2018 QS as an impact risk - see above
1630Noted that JPL Sentry has updated its 2018 MC7 risk assessment - see above
Noted that JPL Sentry has updated its 2018 NJ risk assessment - see above
Noted that JPL Sentry has posted 2018 QT as an impact risk - see above
Grabbed MPEC 2018-Q41 - 2017 UY42 - see above
Grabbed MPEC 2018-Q42 - 2014 PW59 - see above
Grabbed MPEC 2018-Q43 - Daily Orbit Update - see above
Grabbed MPEC 2018-Q44 - 2015 QO3 - see above
Grabbed MPEC 2018-Q45 - 2018 PP24 - see above
Grabbed MPEC 2018-Q46 - 2018 PQ24 - see above
Grabbed MPEC 2018-Q47 - 2018 PR24 - see above
Grabbed MPEC 2018-Q48 - 2018 PS24 - see above
Grabbed MPEC 2018-Q49 - 2018 QP - see above
Grabbed MPEC 2018-Q50 - 2018 QQ - see above
Grabbed MPEC 2018-Q51 - 2018 QR - see above
Grabbed MPEC 2018-Q52 - 2018 QS - see above
Grabbed MPEC 2018-Q53 - 2018 QT - see above
Grabbed MPEC 2018-Q54 - 2018 QU - see above
Grabbed MPEC 2018-Q55 - 2018 QV - see above
Grabbed MPEC 2018-Q56 - 2018 QW - see above
Grabbed MPEC 2018-Q57 - 2018 QX - see above
Grabbed MPEC 2018-Q58 - 2018 QZ - see above
Grabbed MPEC 2018-Q59 - 2018 QA1 - see above
Grabbed MPEC 2018-Q60 - 2018 QO - see above
Grabbed MPEC 2018-Q61 - 2018 QY - see above