Contents  on 14 April '19

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 April '19

Thirteen objects reported inside ten LD

Bulletin - 2310, updated 2333 & 2354 UTC:  Three new discoveries of close passers have been announced.

Earth passageI D~Size~Inside ten LDNotes
1.93 LD at 0734 UTC April 112019 GS1926 m April 7 - 15MPEC
2.09 LD at 0315 UTC April 112019 GT1911 m April 6 - 15MPEC
5.49 LD at 0437 UTC April 112019 GP1916 m April 1 - 20MPEC


According to data now five days obsolete, there may be thirteen planetesimals traveling within ten lunar distances (LD) of Earth today, but we cannot report with any accuracy where those objects are located, so again there will be no traffic report. [This was due to problems in acquiring data. The previous and next regular traffic reports were posted on April 9th and April 15th.] See today's DOU MPEC below for the latest observations of close-passing objects. Also see MPEC 2019-G162 for the recovery of 2014 HD177, which appeared in our last regular traffic report on April 9th as perhaps coming inside ten LD during "April 7-12." It did not. JPL is showing that it reached only 10.75 LD on April 11th. This report was generated at 2250 UTC.



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 14 April '19

The MPC's NEO Confirmation Page has 63 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 63 objects listed. Of these, 20 were "one nighters." So far The Tracking News has counted a total of 90 listings on the NEOCP today.

New MPECs  on 14 April '19

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 24 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2019-G178 - "23:16 UT" - 2019 GU19


MPEC 2019-G177 - "23:10 UT" - 2019 GT19


MPEC 2019-G176 - "23:05 UT" - 2019 GS19


MPEC 2019-G175 - "22:59 UT" - 2019 GR19


MPEC 2019-G174 - "22:53 UT" - 2019 GQ19


MPEC 2019-G173 - "22:47 UT" - 2019 GP19


MPEC 2019-G172 - "22:42 UT" - 2019 GO19


MPEC 2019-G171 - "22:35 UT" - 2019 GN19


MPEC 2019-G170 - "21:59 UT" - 2019 GF19


MPEC 2019-G169 - "21:54 UT" - 2019 GM19


MPEC 2019-G168 - "21:48 UT" - 2019 GL19


MPEC 2019-G167 - "21:42 UT" - 2019 GK19


MPEC 2019-G166 - "21:37 UT" - 2019 GJ19


MPEC 2019-G165 - "21:31 UT" - 2019 GH19


MPEC 2019-G164 - "21:25 UT" - 2019 GG19


MPEC 2019-G163 - "21:19 UT" - 2019 GE19


MPEC 2019-G162 - "20:58 UT" - 2014 HD177


MPEC 2019-G161 - "20:37 UT" - 2005 UC1


<< DOU on 14 Apr. '19 >>  MPEC 2019-G160 - "15:38 UT" - Daily Orbit Update


MPEC 2019-G159 - "04:21 UT" - 2017 HT3


MPEC 2019-G158 - "04:07 UT" - 2000 GT127


MPEC 2019-G157 - "03:52 UT" - 2010 JL41


MPEC 2019-G156 - "02:58 UT" - 2018 KL2


MPEC 2019-G155 - "02:54 UT" - 2016 NH15

Observers  on 14 April '19

A total of 43 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 3 in MPECs 2019-G162, 2019-G174 & 2019-G176 -- 2019 GS19, 2019 GQ19, 2014 HD177
H21Astronomical Research Obs. Westfield in Illinois, 14 in MPECs 2019-G159, 2019-G162, 2019-G164, 2019-G165, 2019-G166, 2019-G167, 2019-G168, 2019-G169, 2019-G170, 2019-G172, 2019-G173, 2019-G174, 2019-G175 & 2019-G177 -- 2019 GT19, 2019 GR19, 2019 GQ19, 2019 GP19, 2019 GO19, 2019 GM19, 2019 GL19, 2019 GK19, 2019 GJ19, 2019 GH19, 2019 GG19, 2019 GF19, 2017 HT3, 2014 HD177
T08ATLAS Mauna Loa in Hawaii, 1 in MPEC 2019-G174 -- 2019 GQ19
I47Auger Obs. in Argentina, 2 in MPECs 2019-G162 & 2019-G174 -- 2019 GQ19, 2014 HD177
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2019-G162 & 2019-G164 -- 2019 GG19, 2014 HD177
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 27 in MPECs 2019-G160, 2019-G169 & 2019-G178 -- 2019 GZ5, 2019 GY3, 2019 GX1, 2019 GW3, 2019 GU3, 2019 GU19, 2019 GS3, 2019 GQ3, 2019 GQ2, 2019 GM3, 2019 GM19, 2019 GL1, 2019 GK1, 2019 GK, 2019 GH4, 2019 GH1, 2019 GG4, 2019 GF4, 2019 FW, 2019 FU2, 2019 FE, 2019 EV2, 2019 EQ2, 2018 VV1, 2018 KL2, 2017 KE35, 2011 LT17
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 20 in MPECs 2019-G155, 2019-G156, 2019-G157, 2019-G158, 2019-G160, 2019-G161, 2019-G162, 2019-G165, 2019-G166, 2019-G168, 2019-G170, 2019-G172 & 2019-G175 -- 2019 GY3, 2019 GV3, 2019 GR19, 2019 GO19, 2019 GM4, 2019 GL19, 2019 GJ19, 2019 GJ, 2019 GH3, 2019 GH19, 2019 GF19, 2019 FM1, 2019 FA3, 2019 EG, 2018 KL2, 2016 NH15, 2014 HD177, 2010 JL41, 2005 UC1, 2000 GT127
W76ChileScope Obs., 1 in MPEC 2019-G162 -- 2014 HD177
Z99Clixby Obs. in England, 1 in MPEC 2019-G165 -- 2019 GH19
K87Dettelbach Vineyard Obs. in Germany, 3 in MPECs 2019-G164, 2019-G165 & 2019-G166 -- 2019 GJ19, 2019 GH19, 2019 GG19
I19El Gato Gris Obs. in Argentina, 1 in MPEC 2019-G162 -- 2014 HD177
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPECs 2019-G166 & 2019-G172 -- 2019 GO19, 2019 GJ19
734Farpoint Obs. in Kansas, 3 in MPECs 2019-G159, 2019-G169 & 2019-G175 -- 2019 GR19, 2019 GM19, 2017 HT3
L34Galhassin Robotic Telescope, 1 in MPEC 2019-G174 -- 2019 GQ19
X31Galilei Obs., 1 in MPEC 2019-G162 -- 2014 HD177
E89Geyserland Obs. in New Zealand, 7 in MPEC 2019-G160 -- 88263, 144898, 12538, 5693, 3122, 1917, 1036
K88GINOP-KHK in Hungary, 1 in MPEC 2019-G165 -- 2019 GH19
A17Guidestar Obs. in Germany, 2 in MPECs 2019-G164 & 2019-G176 -- 2019 GS19, 2019 GG19
U69"M. Suzuki in Japan via iTelescope Obs. Auberry in northern California, 1 in MPEC 2019-G162 -- 2014 HD177
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 2 in MPECs 2019-G162 & 2019-G177 -- 2019 GT19, 2014 HD177
Q66JAXA Janess-G in New South Wales, 2 in MPECs 2019-G162 & 2019-G177 -- 2019 GT19, 2014 HD177
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 5 in MPECs 2019-G162, 2019-G167, 2019-G174, 2019-G176 & 2019-G177 -- 2019 GT19, 2019 GS19, 2019 GQ19, 2019 GK19, 2014 HD177
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 5 in MPEC 2019-G160 -- 2019 GT2, 2019 GK3, 2019 GD4, 2019 FN2, 2008 EY68
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2019-G160 -- 2019 GC6
H01Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2019-G164, 2019-G165, 2019-G167, 2019-G171, 2019-G172 & 2019-G178 -- 2019 GU19, 2019 GO19, 2019 GN19, 2019 GK19, 2019 GH19, 2019 GG19
711McDonald Obs. in Texas, 10 in MPECs 2019-G157, 2019-G164, 2019-G165, 2019-G168, 2019-G169, 2019-G171, 2019-G173, 2019-G174, 2019-G176 & 2019-G177 -- 2019 GT19, 2019 GS19, 2019 GQ19, 2019 GP19, 2019 GN19, 2019 GM19, 2019 GL19, 2019 GH19, 2019 GG19, 2010 JL41
474Mt. John Obs. in New Zealand, 3 in MPECs 2019-G158, 2019-G160 & 2019-G174 -- 2019 GQ19, 2019 GG4, 2000 GT127
G96Mt. Lemmon Survey (MLS) in Arizona, 9 in MPECs 2019-G164, 2019-G165, 2019-G167, 2019-G168, 2019-G170, 2019-G174, 2019-G175, 2019-G176 & 2019-G178 -- 2019 GU19, 2019 GS19, 2019 GR19, 2019 GQ19, 2019 GL19, 2019 GK19, 2019 GH19, 2019 GG19, 2019 GF19
Q33Nayoro Obs. in Japan, 1 in MPEC 2019-G162 -- 2014 HD177
J69North Obs. in England, 2 in MPECs 2019-G160 & 2019-G162 -- 2019 GC6, 2014 HD177
Z80Northolt Branch Obs. in England, 3 in MPECs 2019-G162, 2019-G174 & 2019-G176 -- 2019 GS19, 2019 GQ19, 2014 HD177
F51Pan-STARRS 1 (PS1) in Hawaii, 14 in MPECs 2019-G157, 2019-G158, 2019-G159, 2019-G160, 2019-G161, 2019-G163, 2019-G164, 2019-G165, 2019-G166, 2019-G168, 2019-G169, 2019-G170, 2019-G171, 2019-G172 & 2019-G175 -- 2019 GR19, 2019 GO19, 2019 GN19, 2019 GM19, 2019 GL19, 2019 GJ19, 2019 GH19, 2019 GG19, 2019 GF19, 2019 GE19, 2017 HT3, 2010 JL41, 2005 UC1, 2000 GT127
K63Pascoli Obs. in Italy, 1 in MPEC 2019-G164 -- 2019 GG19
C95SATINO-1 in France, 1 in MPEC 2019-G160 -- 2019 BB1
033Schwarzschild Obs. in Germany, 6 in MPECs 2019-G164, 2019-G165, 2019-G166, 2019-G167, 2019-G168 & 2019-G169 -- 2019 GM19, 2019 GL19, 2019 GK19, 2019 GJ19, 2019 GH19, 2019 GG19
G40*program code "*" (19) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-G174 -- 2019 GQ19
G403Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-G160 -- 2019 AP3
691Spacewatch 0.9m telescope in Arizona, 14 in MPECs 2019-G158, 2019-G160, 2019-G166, 2019-G168 & 2019-G169 -- 2019 GM19, 2019 GL19, 2019 GJ19, 2019 GD, 2019 GC6, 2019 FY, 2019 FH1, 2019 FG1, 2018 VZ9, 2016 JE, 2015 FV118, 2011 HP, 2004 UU1, 2000 GT127
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2019-G157, 2019-G160, 2019-G161, 2019-G170, 2019-G171 & 2019-G175 -- 2019 GR19, 2019 GO, 2019 GN19, 2019 GF19, 2019 GD1, 2019 FU2, 2019 FE, 2019 FD, 2010 JL41, 2005 UC1
I93St. Pardon de Conques Obs. in France, 4 in MPECs 2019-G164, 2019-G165, 2019-G166 & 2019-G167 -- 2019 GK19, 2019 GJ19, 2019 GH19, 2019 GG19
I52Steward Obs. Mt. Lemmon Station in Arizona, 56 in MPECs 2019-G160, 2019-G161, 2019-G162, 2019-G164, 2019-G165, 2019-G166, 2019-G167, 2019-G168, 2019-G169, 2019-G170, 2019-G173, 2019-G174, 2019-G175, 2019-G176, 2019-G177 & 2019-G178 -- 2019 GX5, 2019 GV3, 2019 GV1, 2019 GU5, 2019 GU19, 2019 GT19, 2019 GS19, 2019 GR2, 2019 GR19, 2019 GR, 2019 GQ5, 2019 GQ19, 2019 GP5, 2019 GP3, 2019 GP19, 2019 GO, 2019 GM4, 2019 GM19, 2019 GM, 2019 GL4, 2019 GL19, 2019 GL, 2019 GK19, 2019 GJ19, 2019 GH19, 2019 GG19, 2019 GG1, 2019 GF19, 2019 GF1, 2019 GD3, 2019 GD1, 2019 GC6, 2019 GB6, 2019 GA4, 2019 GA, 2019 FY, 2019 FS, 2019 FO1, 2019 FN2, 2019 FJ1, 2019 FH, 2019 FG1, 2019 FD1, 2019 FD, 2019 ED2, 2019 EC2, 2019 CW5, 2019 BJ5, 2019 BF4, 2018 YB1, 2018 XT2, 2018 XH, 2018 XC2, 2014 MG19, 2014 HD177, 2005 UC1
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2019-G160 -- 2019 GS3, 2018 NY14
L01Visnjan Obs., 6 in MPECs 2019-G164, 2019-G165, 2019-G166, 2019-G167, 2019-G168 & 2019-G175 -- 2019 GR19, 2019 GL19, 2019 GK19, 2019 GJ19, 2019 GH19, 2019 GG19
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPECs 2019-G160, 2019-G173 & 2019-G176 -- 2019 GS19, 2019 GP19, 159923
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 April '19

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 GC6JPL Sentry20012101-211431.792101e-06-6.97-7.060JPL: Computed at 12:21 today Pacific time based on 73 observations spanning 13.909 days (2019-Mar-31.33428 to 2019-Apr-14.24315). Diameter approximately 0.016 km. from weighted mean H=26.59.
NEODyS20012055-2114416.75e-06-6.35-6.750NEODyS: "Based on 73 optical observations (of which 0 are rejected as outliers) from 2019-03-31.335 to 2019-04-14.244."
2019 GD4JPL Sentry20012065-2118312.93748757e-05-6.07-6.400JPL: Computed at 12:10 today Pacific time based on 14 observations spanning 8.9685 days (2019-Apr-05.43169 to 2019-Apr-14.40018). Diameter approximately 0.010 km. from weighted mean H=27.64.
NEODyS20012062-2118722.2e-05-6.21-6.60NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2019-04-05.432 to 2019-04-14.401."
2019 GK3JPL Sentry20012103-211638.21066e-06-7.71-7.710JPL: Computed at 12:17 today Pacific time based on 35 observations spanning 9.9878 days (2019-Apr-04.349765 to 2019-Apr-14.33752). Diameter approximately 0.004 km. from weighted mean H=29.50.
NEODyS20012103-211659.74e-06-7.65-7.710NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2019-04-04.351 to 2019-04-14.338."
2019 GD1NEODyS2001211511.64e-06-3.42-3.420NEODyS: "Based on 49 optical observations (of which 0 are rejected as outliers) from 2019-04-02.477 to 2019-04-14.386."
JPL Sentry19022115-211921.6383613e-06-3.41-3.410JPL: Computed at 11:57 today Pacific time based on 49 observations spanning 11.908 days (2019-Apr-02.47647 to 2019-Apr-14.38483). Diameter approximately 0.310 km. from weighted mean H=20.19.
2019 FENEODyS20012095-211832.16e-07-6.56-6.780NEODyS: "Based on 191 optical observations (of which 3 are rejected as outliers) from 2019-03-17.564 to 2019-04-14.468."

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 April '19

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

2330Grabbed MPEC 2019-G176 - 2019 GS19 - see above
Grabbed MPEC 2019-G177 - 2019 GT19 - see above
Grabbed MPEC 2019-G178 - 2019 GU19 - see above
2302Grabbed MPEC 2019-G171 - 2019 GN19 - see above
Grabbed MPEC 2019-G172 - 2019 GO19 - see above
Grabbed MPEC 2019-G173 - 2019 GP19 - see above
Grabbed MPEC 2019-G174 - 2019 GQ19 - see above
Grabbed MPEC 2019-G175 - 2019 GR19 - see above
2250Generated Traffic Report
2208Grabbed MPEC 2019-G163 - 2019 GE19 - see above
Grabbed MPEC 2019-G164 - 2019 GG19 - see above
Grabbed MPEC 2019-G165 - 2019 GH19 - see above
Grabbed MPEC 2019-G166 - 2019 GJ19 - see above
Grabbed MPEC 2019-G167 - 2019 GK19 - see above
Grabbed MPEC 2019-G168 - 2019 GL19 - see above
Grabbed MPEC 2019-G169 - 2019 GM19 - see above
Grabbed MPEC 2019-G170 - 2019 GF19 - see above
2107Grabbed MPEC 2019-G161 - 2005 UC1 - see above
Grabbed MPEC 2019-G162 - 2014 HD177 - see above
2001Noted that NEODyS has updated its 2019 FE risk assessment - see above
Noted that JPL Sentry has updated its 2019 GC6 risk assessment - see above
Noted that NEODyS has updated its 2019 GC6 risk assessment - see above
Noted that NEODyS has updated its 2019 GD1 risk assessment - see above
Noted that JPL Sentry has updated its 2019 GD4 risk assessment - see above
Noted that NEODyS has updated its 2019 GD4 risk assessment - see above
Noted that JPL Sentry has updated its 2019 GK3 risk assessment - see above
Noted that NEODyS has updated its 2019 GK3 risk assessment - see above
1902Noted that JPL Sentry has updated its 2019 GD1 risk assessment - see above
1733Grabbed MPEC 2019-G160 - Daily Orbit Update - see above
0500Grabbed MPEC 2019-G158 - 2000 GT127 - see above
Grabbed MPEC 2019-G159 - 2017 HT3 - see above
0400Grabbed MPEC 2019-G155 - 2016 NH15 - see above
Grabbed MPEC 2019-G156 - 2018 KL2 - see above
Grabbed MPEC 2019-G157 - 2010 JL41 - see above