Contents  on 14 October '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 October '19

Eight objects reported inside ten LD

There are eight small celestial objects reported to be less than ten lunar distances (LD) from our planet today. Nearest is 2019 TT1, outbound from 2.98 to 4.69 LD, while 2019 TA7 comes its closest to Earth on this passage -- 3.91 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
1.43 LD Oct. 11 2019 TZ6 10 m  5.95 to 8.52 LD Oct. 8 - 15
2.5   LD Oct. 19* 2019 TK5 11 m  6.1 from 7.3 LD Oct. 11 - 26 EPU +/- 8 mins.*, NHATS target, risk
2.90 LD yesterday 2019 TT1 20 m  2.98 to 4.69 LD Oct. 10 - 16 DOU
3.67 LD Oct. 6 2019 TF3 9 m  9.29 to 10.33 LD Sept. 28 - today NHATS target, exits ten LD
3.91 LD today 2019 TA7 19 m  3.91 LD Oct. 11 - 18 Earth closest at 2251 UTC
6.0   LD yesterday* 2019 TB7 17 m  6.1 to 6.4 LD Oct. 6 - 19 EPU +/- 20 mins.*, NHATS target
8.56 LD Oct. 12 2019 SV9 28 m  9.18 to 10.66 LD Oct. 11 - 14 exits ten LD
9.26 LD yesterday 2019 TH2 18 m  9.36 to 9.76 LD Oct. 11 - 15

This report was generated at 1736 UTC with follow-up in today's DOU MPEC for outbound 2019 TT1 and astrometry from August for 2019 OL.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
8.22 LD Oct. 18 2019 TE2 28 m  10.72 from 12.30 LD tomorrow - Oct. 20
8.2   LD Oct. 18* 2019 TP5 27 m  16.1 from 19.9 LD Oct. 16 - 19 EPU +/- 13 mins.*
*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. Object temporal distances are derived by A/CC from JPL Horizons data. "LD*" indicates some uncertainty in object passage time and distance. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 14 October '19

The MPC's NEO Confirmation Page has 46 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 46 objects listed. Of these, 22 were "one nighters."

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 14 October '19

Minor Planet Electronic Circulars

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


<< DOU on 14 October '19 >>  MPEC 2019-T222 - "12:04 UT" - Daily Orbit Update

Observers  on 14 October '19

Thirteen observers appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 22 in MPEC 2019-T222 -- 2019 RV3, 2019 RE2, 2019 RB1, 2019 QY3, 2019 QW3, 2019 QO5, 2019 QC1, 2019 PR2, 2019 PP1, 2019 PE2, 2019 OX, 2019 OW2, 2019 OL, 2019 OG, 2019 LK6, 2019 HC, 2019 GT3, 2016 NL15, 2015 RZ35, 2012 HR69, 9202, 2100
T05ATLAS Haleakala in Hawaii, 11 in MPEC 2019-T222 -- 66146, 494880, 481542, 467317, 401857, 153842, 143527, 136993, 3753, 2100, 2059
T08ATLAS Mauna Loa in Hawaii, 14 in MPEC 2019-T222 -- 2009 QB36, 503960, 354030, 326777, 153814, 142555, 137052, 7088, 6455, 5626, 5189, 3102, 1866, 1620
160Castelmartini Obs. in Italy, 25 in MPEC 2019-T222 -- 2019 TT1, 2019 SM, 2017 MN8, 2010 UH7, 85839, 85628, 489486, 481985, 481394, 458745, 442243, 395289, 373428, 354030, 339714, 162723, 162273, 154278, 153814, 142555, 141593, 140333, 6455, 5189, 3102
K87Dettelbach Vineyard Obs. in Germany, 6 in MPEC 2019-T222 -- 2019 SZ2, 2019 SM, 2009 QB36, 2001 QC34, 90403, 503960
G34Oberfrauendorf Obs. in Germany, 2 in MPEC 2019-T222 -- 18172, 1620
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2019-T222 -- 2015 MO11
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPEC 2019-T222 -- 355256, 137052, 5189, 1865
104San Marcello Pistoiese Obs. in Italy, 3 in MPEC 2019-T222 -- 2017 MN8, 2010 UH7, 2009 QB36
C95SATINO-1 in France, 1 in MPEC 2019-T222 -- 2019 RU3
A16Tentlingen Obs. in Switzerland, 3 in MPEC 2019-T222 -- 162082, 137084, 1620
V36The Ranch Obs., 1 in MPEC 2019-T222 -- 248926
I41Zwicky Transient Facility (ZTF) in southern California, 5 in MPEC 2019-T222 -- 86067, 152931, 137805, 3691, 2062
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 October '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 RT3JPL Sentry16312075-2117195.5272e-05-4.60-4.920JPL: Computed at 09:03 today Pacific time based on 106 observations spanning 28.758 days (2019-Sep-11.603747 to 2019-Oct-10.36126). Diameter approximately 0.031 km. from weighted mean H=25.16.

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 October '19

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

1736Generated Traffic Report
1631Noted that JPL Sentry has updated its 2019 RT3 risk assessment - see above
1600Grabbed MPEC 2019-T222 - Daily Orbit Update - see above