Contents  on 24 May '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 24 May '19

Four objects reported inside ten LD

There are four transient natural objects reported inside ten lunar distances (LD) of Earth today. All are moving away from us and none are closer than 7.01 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
2.48 LD May 20 2019 JL3 36 m  7.66 to 9.55 LD May 15 - 25
3.01 LD May 18 2019 JY7 10 m  9.21 to 10.86 LD May 13 - 24 NEW, exits ten LD - MPEC
4.14 LD May 17 2012 KT12 19 m  7.01 to 7.74 LD May 7 - 27 NHATS target
6.09 LD May 17 2019 GT1 34 m  8.10 to 8.70 LD May 8 - 26 NHATS target

This report was generated at 1850 UTC with four discoveries. 2019 JY7 (MPEC) leaves our ten-LD traffic reporting "bubble" today, and the other three objects have already departed. 2019 JZ7 (MPEC) flew by us at 6.66 LD on May 7th, 2019 JW7 (MPEC) at 7.76 LD on May 13th, and 2019 JV7 (MPEC) at 7.59 LD on May 12th. Today's DOU MPEC has follow-up for departed objects 2019 JD6 and 2019 JU5.



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 24 May '19

The MPC's NEO Confirmation Page has 23 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 23 objects listed. Of these, one was a "one nighter." So far The Tracking News has counted a total of 44 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 24 May '19

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 20 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2019-K35 - "17:03 UT" - 2019 KD


MPEC 2019-K34 - "16:58 UT" - 2019 KC


MPEC 2019-K33 - "16:53 UT" - 2019 JD8


MPEC 2019-K32 - "16:48 UT" - 2019 JC8


MPEC 2019-K31 - "16:43 UT" - 2019 JB8


MPEC 2019-K30 - "16:38 UT" - 2019 JA8


MPEC 2019-K29 - "16:33 UT" - 2019 JZ7


MPEC 2019-K28 - "16:28 UT" - 2019 JY7


MPEC 2019-K27 - "16:23 UT" - 2019 JX7


MPEC 2019-K26 - "16:18 UT" - 2019 JW7


MPEC 2019-K25 - "16:13 UT" - 2019 JV7


MPEC 2019-K24 - "16:08 UT" - 2019 JU7


MPEC 2019-K23 - "16:03 UT" - 2019 JT7


MPEC 2019-K22 - "15:58 UT" - 2019 JS7


MPEC 2019-K21 - "15:53 UT" - 2019 JR7


MPEC 2019-K20 - "15:48 UT" - 2019 JQ7


MPEC 2019-K19 - "15:44 UT" - 2019 JP7


MPEC 2019-K18 - "14:32 UT" - Comet C/2019 JU6 (ATLAS)


<< DOU on 24 May '19 >>  MPEC 2019-K17 - "12:02 UT" - Daily Orbit Update


MPEC 2019-K16 - "10:26 UT" - 2016 WT9

Observers  on 24 May '19

A total of 41 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 2 in MPECs 2019-K27 & 2019-K29 -- 2019 JZ7, 2019 JX7
H21Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2019-K17, 2019-K20, 2019-K22, 2019-K24, 2019-K26, 2019-K28 & 2019-K34 -- 2019 KC, 2019 JY7, 2019 JW7, 2019 JU7, 2019 JS7, 2019 JQ7, 2019 HK4, 2019 HD, 2019 GZ6, 2018 XG5, 524471
T05ATLAS Haleakala in Hawaii, 4 in MPECs 2019-K17, 2019-K18, 2019-K27 & 2019-K35 -- 2019 KD, 2019 JX7, C/2019 JU6, 2011 HP
I47Auger Obs. in Argentina, 2 in MPECs 2019-K18 & 2019-K27 -- 2019 JX7, C/2019 JU6
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2019-K27 -- 2019 JX7
703Catalina Sky Survey in Arizona, 1 in MPEC 2019-K18 -- C/2019 JU6
V06Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2019-K23 -- 2019 JT7
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 15 in MPECs 2019-K16, 2019-K17, 2019-K19, 2019-K21, 2019-K27, 2019-K28, 2019-K29, 2019-K30 & 2019-K35 -- 2019 KD, 2019 JZ7, 2019 JY7, 2019 JX7, 2019 JR7, 2019 JP7, 2019 JN1, 2019 JE1, 2019 JA8, 2019 GV1, 2019 GP5, 2019 GG1, 2019 FG1, 2018 XQ4, 2016 WT9
958Dax Obs. in France, 1 in MPEC 2019-K27 -- 2019 JX7
L29Drebach-South Obs., 1 in MPEC 2019-K27 -- 2019 JX7
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2019-K17 & 2019-K27 -- 2019 JX7, 2011 HP
X31Galilei Obs., 1 in MPEC 2019-K27 -- 2019 JX7
E89Geyserland Obs. in New Zealand, 5 in MPEC 2019-K17 -- 88263, 141593, 111253, 4957, 3122
J95Great Shefford Obs. in England, 9 in MPECs 2019-K17, 2019-K23, 2019-K24, 2019-K25, 2019-K26, 2019-K27, 2019-K31 & 2019-K34 -- 2019 KC, 2019 JX7, 2019 JW7, 2019 JV7, 2019 JU7, 2019 JT7, 2019 JB8, 2016 GW216, 2011 HP
A17Guidestar Obs. in Germany, 1 in MPEC 2019-K18 -- C/2019 JU6
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2019-K18 -- C/2019 JU6
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2019-K27 -- 2019 JX7
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 4 in MPECs 2019-K17, 2019-K22 & 2019-K23 -- 2019 JT7, 2019 JS7, 2019 FH, 2013 AS27
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2019-K35 -- 2019 KD
K92LCO Sutherland B in South Africa, 1 in MPEC 2019-K35 -- 2019 KD
H01Magdalena Ridge Obs. (MRO) in New Mexico, 12 in MPECs 2019-K21, 2019-K23, 2019-K24, 2019-K26, 2019-K27, 2019-K28, 2019-K29, 2019-K30, 2019-K31, 2019-K32, 2019-K34 & 2019-K35 -- 2019 KD, 2019 KC, 2019 JZ7, 2019 JY7, 2019 JX7, 2019 JW7, 2019 JU7, 2019 JT7, 2019 JR7, 2019 JC8, 2019 JB8, 2019 JA8
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2019-K24, 2019-K27, 2019-K28, 2019-K29, 2019-K30, 2019-K32 & 2019-K33 -- 2019 JZ7, 2019 JY7, 2019 JX7, 2019 JU7, 2019 JD8, 2019 JC8, 2019 JA8
J69North Obs. in England, 1 in MPEC 2019-K27 -- 2019 JX7
Z80Northolt Branch Obs. in England, 2 in MPECs 2019-K26 & 2019-K31 -- 2019 JW7, 2019 JB8
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2019-K17, 2019-K19, 2019-K20, 2019-K22 & 2019-K23 -- 2019 JT7, 2019 JS7, 2019 JQ7, 2019 JP7, 2016 GW216
F52Pan-STARRS 2 in Hawaii, 1 in MPEC 2019-K30 -- 2019 JA8
K63Pascoli Obs. in Italy, 1 in MPEC 2019-K27 -- 2019 JX7
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2019-K17 & 2019-K34 -- 2019 KC, 2011 HP
H36Sandlot Obs. in Kansas, 1 in MPEC 2019-K34 -- 2019 KC
C95SATINO-1 in France, 3 in MPECs 2019-K17, 2019-K27 & 2019-K34 -- 2019 KC, 2019 JX7, 2018 VM3
204Schiaparelli Obs. in Italy, 2 in MPECs 2019-K18 & 2019-K26 -- 2019 JW7, C/2019 JU6
033Schwarzschild Obs. in Germany, 1 in MPEC 2019-K18 -- C/2019 JU6
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-K18 -- C/2019 JU6
691Spacewatch 0.9m telescope in Arizona, 18 in MPECs 2019-K17, 2019-K20, 2019-K23, 2019-K30, 2019-K32 & 2019-K34 -- 2019 KC, 2019 JY4, 2019 JU5, 2019 JT7, 2019 JQ7, 2019 JQ2, 2019 JP5, 2019 JP2, 2019 JK1, 2019 JC8, 2019 JA8, 2019 HK4, 2019 GZ6, 2019 GN21, 2019 GD3, 2018 YA3, 2015 QO3, 2013 LG16
291Spacewatch 1.8m telescope in Arizona, 9 in MPECs 2019-K17, 2019-K19, 2019-K20, 2019-K21, 2019-K23, 2019-K24, 2019-K32 & 2019-K34 -- 2019 KC, 2019 JU7, 2019 JT7, 2019 JR7, 2019 JQ7, 2019 JP7, 2019 JC8, 2019 HN, 2019 GT3
I93St. Pardon de Conques Obs. in France, 5 in MPECs 2019-K26, 2019-K27, 2019-K31, 2019-K32 & 2019-K34 -- 2019 KC, 2019 JX7, 2019 JW7, 2019 JC8, 2019 JB8
I52Steward Obs. Mt. Lemmon Station in Arizona, 46 in MPECs 2019-K17, 2019-K18, 2019-K20, 2019-K23, 2019-K24, 2019-K27, 2019-K28, 2019-K29, 2019-K30, 2019-K32, 2019-K33 & 2019-K34 -- 2019 KC, 2019 JZ7, 2019 JY7, 2019 JY6, 2019 JY4, 2019 JX7, 2019 JX2, 2019 JU7, C/2019 JU6, 2019 JU5, 2019 JT7, 2019 JS5, 2019 JS2, 2019 JQ7, 2019 JQ5, 2019 JQ2, 2019 JP3, 2019 JN1, 2019 JM5, 2019 JG3, 2019 JE6, 2019 JD8, 2019 JD6, 2019 JC8, 2019 JA8, 2019 JA7, 2019 HC, 2019 GZ6, 2019 GP5, 2019 GN21, 2019 GF20, 2019 GB4, 2019 FP2, 2019 CW5, 2019 CH, 2019 CE, 2019 AP3, 2019 AH11, 2018 YA3, 2018 XQ4, 2018 LM4, 2016 WU3, 2014 VQ, 2013 KJ6, 2012 KA4, 2007 RR12
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2019-K16 -- 2016 WT9
L01Visnjan Obs., 8 in MPECs 2019-K17, 2019-K23, 2019-K24, 2019-K27, 2019-K29, 2019-K30, 2019-K32 & 2019-K34 -- 2019 KC, 2019 JZ7, 2019 JX7, 2019 JU7, 2019 JT7, 2019 JC8, 2019 JA8, 2016 GW216
C51WISE in Earth polar orbit, 2 in MPECs 2019-K21 & 2019-K34 -- 2019 KC, 2019 JR7
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPECs 2019-K25, 2019-K26 & 2019-K31 -- 2019 JW7, 2019 JV7, 2019 JB8
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 May '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 JD8JPL Sentry18002056-2117212.0817186e-06-5.62-5.880JPL: Computed at 10:58 today Pacific time based on 17 observations spanning 1.9850 days (2019-May-15.33623 to 2019-May-17.32124). Diameter approximately 0.040 km. from weighted mean H=24.64.
2019 JR7JPL Sentry17002067-206713.341e-07-4.80-4.800JPL: Computed at 09:57 today Pacific time based on 29 observations spanning 16.504 days (2019-May-07.92534 to 2019-May-24.429729). Diameter approximately 0.140 km. from weighted mean H=21.95.

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 24 May '19

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

1850Generated Traffic Report
1800Noted that JPL Sentry has posted 2019 JD8 as an impact risk - see above
1732Grabbed MPEC 2019-K35 - 2019 KD - see above
1700Noted that JPL Sentry has posted 2019 JR7 as an impact risk - see above
Grabbed MPEC 2019-K29 - 2019 JZ7 - see above
Grabbed MPEC 2019-K30 - 2019 JA8 - see above
Grabbed MPEC 2019-K31 - 2019 JB8 - see above
Grabbed MPEC 2019-K32 - 2019 JC8 - see above
Grabbed MPEC 2019-K33 - 2019 JD8 - see above
Grabbed MPEC 2019-K34 - 2019 KC - see above
1631Grabbed MPEC 2019-K23 - 2019 JT7 - see above
Grabbed MPEC 2019-K24 - 2019 JU7 - see above
Grabbed MPEC 2019-K25 - 2019 JV7 - see above
Grabbed MPEC 2019-K26 - 2019 JW7 - see above
Grabbed MPEC 2019-K27 - 2019 JX7 - see above
Grabbed MPEC 2019-K28 - 2019 JY7 - see above
1600Grabbed MPEC 2019-K19 - 2019 JP7 - see above
Grabbed MPEC 2019-K20 - 2019 JQ7 - see above
Grabbed MPEC 2019-K21 - 2019 JR7 - see above
Grabbed MPEC 2019-K22 - 2019 JS7 - see above
1530Grabbed MPEC 2019-K16 - 2016 WT9 - see above
Grabbed MPEC 2019-K17 - Daily Orbit Update - see above
Grabbed MPEC 2019-K18 - Comet C/2019 JU6 (ATLAS) - see above