Contents  on 1 July '17

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 1 July '17

Five objects reported inside ten LD

There are five transient natural objects known to be less than ten lunar distances (LD) from Earth today. Nearest is 2017 MC1, which moves away from 2.53 to 3.83 LD.

Earth passage I D ~Size Distance Today  Notes
2.52 LD June 302017 MC1 42 m  2.53 to 3.83 LD
3.23 LD June 272017 MA3 15 m  8.31 to 10.26 LD exits ten LD
4.99 LD June 302017 MB3 29 m  5.01 to 5.34 LD
5.39 LD July 32017 ME4 19 m  5.91 from 6.68 LD DOU
6.51 LD tomorrow2017 MC3 53 m  7.13 from 8.76 LD DOU
Approaching
3.12 LD July 232017 BS5 51 m  < 10 LD July 16, NHATS target
7.62 LD July 112017 MC4 147 m  < 10 LD July 9 - DOU

This report was generated at 1849 UTC with the discovery of already departed risk-listed 2017 MF7 (MPEC), which went past us at 2.66 LD on June 17th, and with follow-up in today's DOU MPEC for three objects in the active traffic table here and for four departed objects: 2017 MD and radar targets 2017 CS, 441987 2010 NY65, and 418094 2007 WV4.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting on transient natural objects that approach the actually significant 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 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 1 July '17

The MPC's NEO Confirmation Page has 45 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 45 objects listed. Of these, seventeen were "one nighters." So far The Tracking News has counted a total of 77 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 1 July '17

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 28 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2017-N28 - "17:15 UT" - Comet C/2015 ER61-B (Panstarrs)


MPEC 2017-N27 - "16:58 UT" - Comet C/2017 M4 (ATLAS)


MPEC 2017-N26 - "16:37 UT" - Comet C/2017 K2 (Panstarrs)


MPEC 2017-N25 - "14:30 UT" - Comet C/2017 M5 (Totas)


<< DOU on 1 July '17 >>  MPEC 2017-N24 - "12:39 UT" - Daily Orbit Update


MPEC 2017-N23 - "04:42 UT" - 2017 MB7


MPEC 2017-N22 - "04:39 UT" - 2017 MU7


MPEC 2017-N21 - "04:36 UT" - 2017 MO7


MPEC 2017-N20 - "04:32 UT" - 2017 MM7


MPEC 2017-N19 - "04:29 UT" - 2017 MW7


MPEC 2017-N18 - "04:26 UT" - 2017 MV7


MPEC 2017-N17 - "04:23 UT" - 2017 MT7


MPEC 2017-N16 - "04:19 UT" - 2017 MS7


MPEC 2017-N15 - "04:17 UT" - 2017 MR7


MPEC 2017-N14 - "04:14 UT" - 2017 MQ7


MPEC 2017-N13 - "04:10 UT" - 2017 MP7


MPEC 2017-N12 - "04:07 UT" - 2017 MN7


MPEC 2017-N11 - "04:05 UT" - 2017 ML7


MPEC 2017-N10 - "04:01 UT" - 2017 MK7


MPEC 2017-N09 - "03:58 UT" - 2017 MJ7


MPEC 2017-N08 - "03:55 UT" - 2017 MH7


MPEC 2017-N07 - "03:52 UT" - 2017 MG7


MPEC 2017-N06 - "03:49 UT" - 2017 MF7


MPEC 2017-N05 - "03:46 UT" - 2017 ME7


MPEC 2017-N04 - "03:42 UT" - 2017 MD7


MPEC 2017-N03 - "03:39 UT" - 2017 MC7


MPEC 2017-N02 - "03:23 UT" - 2007 MB4


MPEC 2017-N01 - "02:57 UT" - 2014 UN225

Observers  on 1 July '17

A total of 57 observers appear in today's MPECs.

CodeObserver / observatory
L33Ananjev Obs. in Ukraine, 1 in MPEC 2017-N25 -- C/2017 M5
E23Arcadia Obs. in New South Wales, 3 in MPECs 2017-N02, 2017-N08 & 2017-N18 -- 2017 MV7, 2017 MH7, 2007 MB4
H21Astronomical Research Obs. Westfield in Illinois, 34 in MPECs 2017-N03, 2017-N09, 2017-N12, 2017-N13, 2017-N14, 2017-N16, 2017-N17, 2017-N18, 2017-N21 & 2017-N24 -- 2017 MZ, 2017 MW2, 2017 MV7, 2017 MV2, 2017 MT7, 2017 MS7, 2017 MQ7, 2017 MP7, 2017 MO7, 2017 MN7, 2017 MJ7, 2017 MG3, 2017 ME, 2017 MD3, 2017 MD, 2017 MC7, 2017 MC3, 2017 MC, 2017 MB1, 2017 KE5, 2017 JN2, 2017 HY4, 2017 HV3, 2017 GQ6, 2017 GQ5, 2017 DB109, 2017 CS, 2015 FO124, 66391, 494710, 190166, 142561, 142040, 100926
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2017-N27 -- C/2017 M4
T08ATLAS Mauna Loa in Hawaii, 4 in MPECs 2017-N18, 2017-N24 & 2017-N27 -- 2017 MV7, C/2017 M4, 2017 KR34, 2010 VB1
C77Bernezzo Obs. in Italy, 1 in MPEC 2017-N14 -- 2017 MQ7
Z84Calar Alto Schmidt in Spain, 3 in MPECs 2017-N18, 2017-N20 & 2017-N25 -- 2017 MV7, 2017 MM7, C/2017 M5
W96Campo Catino Austral Obs. in Chile, 1 in MPEC 2017-N28 -- C/2015 ER61-B
703Catalina Sky Survey (CSS) in Arizona, 10 in MPECs 2017-N22, 2017-N24 & 2017-N27 -- 2017 MU7, C/2017 M4, 2007 MT20, 54789, 441987, 154144, 13651, 11398, 5660, 1865
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 11 in MPEC 2017-N24 -- 2017 MX2, 2017 MD3, 2017 MC4, 2017 MA4, 2017 LP1, 2017 KV4, 2017 KV34, 2017 KO31, 2017 KE3, 2017 HY50, 2017 DV37
K65Cesena Obs. in Italy, 1 in MPEC 2017-N18 -- 2017 MV7
A77Chante-Perdrix Obs. in France, 1 in MPEC 2017-N26 -- C/2017 K2
W847David Gerdes in Michigan via DECam in Chile, 1 in MPEC 2017-N01 -- 2014 UN225
K02Eastwood Obs. in England, 1 in MPEC 2017-N26 -- C/2017 K2
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2017-N25 -- C/2017 M5
734Farpoint Obs. in Kansas, 2 in MPECs 2017-N12 & 2017-N23 -- 2017 MN7, 2017 MB7
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2017-N14 & 2017-N18 -- 2017 MV7, 2017 MQ7
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2017-N25 -- C/2017 M5
E10*program code "*" (19) via Faulkes Telescope South in New South Wales, 1 in MPEC 2017-N25 -- C/2017 M5
157Frasso Sabino Obs. in Italy, 2 in MPECs 2017-N26 & 2017-N27 -- C/2017 M4, C/2017 K2
D08Ghezz Obs. in Switzerland, 1 in MPEC 2017-N26 -- C/2017 K2
K88GINOP-KHK in Hungary, 4 in MPECs 2017-N14, 2017-N16, 2017-N18 & 2017-N25 -- 2017 MV7, 2017 MS7, 2017 MQ7, C/2017 M5
E94Gisborne Obs. in New Zealand, 1 in MPEC 2017-N25 -- C/2017 M5
A17Guidestar Obs. in Germany, 1 in MPEC 2017-N25 -- C/2017 M5
U69#program code "#" (12) via iTelescope Obs. Auberry in northern California, 1 in MPEC 2017-N25 -- C/2017 M5
U695Hidetaka Sato in Japan via iTelescope Obs. Auberry in northern California, 3 in MPECs 2017-N23, 2017-N25 & 2017-N26 -- 2017 MB7, C/2017 M5, C/2017 K2
H06iTelescope Obs. Mayhill in New Mexico, 2 in MPECs 2017-N24 & 2017-N25 -- C/2017 M5, 413563
Q626Erik Bryssinck in Belgium via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-N28 -- C/2015 ER61-B
K22Les Barres Obs. in France, 1 in MPEC 2017-N26 -- C/2017 K2
C10Maisoncelles Obs. in France, 1 in MPEC 2017-N28 -- C/2015 ER61-B
Z22MASTER IAC Obs. in the Canary Islands, 2 in MPEC 2017-N24 -- 11398, 6063
W92MASTER OAFA Obs., 1 in MPEC 2017-N24 -- 136923
568Mauna Kea in Hawaii, 1 in MPEC 2017-N26 -- C/2017 K2
568_Marco Micheli on Mauna Kea in Hawaii, 3 in MPECs 2017-N04, 2017-N05 & 2017-N23 -- 2017 ME7, 2017 MD7, 2017 MB7
118Modra Obs. in Slovakia, 1 in MPEC 2017-N25 -- C/2017 M5
474Mt. John Obs. in New Zealand, 2 in MPECs 2017-N05 & 2017-N06 -- 2017 MF7, 2017 ME7
G96Mt. Lemmon Survey (MLS) in Arizona, 35 in MPECs 2017-N02, 2017-N09, 2017-N12, 2017-N13, 2017-N14, 2017-N15, 2017-N16, 2017-N17, 2017-N19, 2017-N20, 2017-N21, 2017-N22 & 2017-N24 -- 2017 MW7, 2017 MU7, 2017 MT7, 2017 MS7, 2017 MR7, 2017 MQ7, 2017 MP7, 2017 MO7, 2017 MN7, 2017 MM7, 2017 MJ7, 2017 ME4, 2017 AC5, 2015 YR1, 2015 OX78, 2014 MY26, 2013 CL118, 2013 AU27, 2008 LQ16, 2007 ML6, 2007 MB4, 2006 KA40, 495331, 494975, 477519, 418094, 349063, 294739, 265032, 250614, 185716, 162149, 100926, 6063, 1917
J69North Obs. in England, 2 in MPECs 2017-N25 & 2017-N27 -- C/2017 M5, C/2017 M4
Z80Northolt Branch Obs. in England, 1 in MPEC 2017-N25 -- C/2017 M5
C23Olmen Obs. in Belgium, 2 in MPECs 2017-N26 & 2017-N27 -- C/2017 M4, C/2017 K2
F51Pan-STARRS 1 (PS1) in Hawaii, 13 in MPECs 2017-N03, 2017-N04, 2017-N05, 2017-N06, 2017-N07, 2017-N08, 2017-N10, 2017-N11, 2017-N12, 2017-N19, 2017-N23, 2017-N24 & 2017-N26 -- 2017 MW7, 2017 MN7, 2017 ML7, 2017 MK7, 2017 MH7, 2017 MG7, 2017 MF7, 2017 ME7, 2017 MD7, 2017 MC7, 2017 MB7, C/2017 K2, 2010 VB1
W25RMS Obs., 4 in MPECs 2017-N02, 2017-N14, 2017-N16 & 2017-N18 -- 2017 MV7, 2017 MS7, 2017 MQ7, 2007 MB4
G39ROAD in Chile, 1 in MPEC 2017-N28 -- C/2015 ER61-B
L04ROASTERR-1 in Romania, 2 in MPECs 2017-N14 & 2017-N18 -- 2017 MV7, 2017 MQ7
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2017-N14 & 2017-N16 -- 2017 MS7, 2017 MQ7
H36Sandlot Obs. in Kansas, 1 in MPEC 2017-N24 -- 2007 MB4
B74Santa Maria de Montmagastrell Obs. in Spain, 2 in MPECs 2017-N14 & 2017-N18 -- 2017 MV7, 2017 MQ7
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPECs 2017-N25 & 2017-N28 -- C/2017 M5, C/2015 ER61-B
Y00SONEAR in Brazil, 2 in MPEC 2017-N24 -- 190166, 11398
691Spacewatch 0.9m telescope in Arizona, 19 in MPECs 2017-N03, 2017-N05, 2017-N08, 2017-N15 & 2017-N24 -- 2017 MY3, 2017 MX2, 2017 MW4, 2017 MW2, 2017 MV2, 2017 MR7, 2017 MH7, 2017 ME7, 2017 ME1, 2017 MC7, 2017 MC4, 2017 MB1, 2017 MA4, 2017 HV4, 2017 CS, 2015 FO124, 2010 VB1, 2000 SB8, 437841
291Spacewatch 1.8m telescope in Arizona, 17 in MPECs 2017-N03, 2017-N05, 2017-N07, 2017-N10, 2017-N13, 2017-N23 & 2017-N24 -- 2017 MY2, 2017 MP7, 2017 MM, 2017 MK7, 2017 MG7, 2017 MF1, 2017 ME7, 2017 MC7, 2017 MB7, 2017 KP4, 2017 FJ90, 2016 JJ17, 2015 OX78, 2014 LU14, 2009 OO9, 2006 OH15, 2004 KH15
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2017-N18 -- 2017 MV7
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2017-N25 -- C/2017 M5
I52Steward Obs. Mt. Lemmon Station in Arizona, 30 in MPECs 2017-N02, 2017-N03, 2017-N04, 2017-N05, 2017-N07, 2017-N08, 2017-N09, 2017-N10, 2017-N11, 2017-N12, 2017-N13, 2017-N14, 2017-N15, 2017-N16, 2017-N17, 2017-N18, 2017-N19, 2017-N20, 2017-N21, 2017-N22, 2017-N23, 2017-N24 & 2017-N25 -- 2017 MY2, 2017 MW7, 2017 MV7, 2017 MU7, 2017 MT7, 2017 MS7, 2017 MR7, 2017 MQ7, 2017 MP7, 2017 MO7, 2017 MN7, 2017 MM7, 2017 ML7, 2017 MK7, 2017 MJ7, 2017 MH7, 2017 MG7, 2017 MG3, 2017 ME7, 2017 ME1, 2017 MD7, 2017 MD4, 2017 MC7, 2017 MC5, 2017 MC3, 2017 MB7, 2017 MB5, 2017 MA5, C/2017 M5, 2007 MB4
A71Stixendorf Obs. in Austria, 3 in MPECs 2017-N26, 2017-N27 & 2017-N28 -- C/2017 M4, C/2017 K2, C/2015 ER61-B
461SZTE Asteroid Program in Hungary, 1 in MPEC 2017-N26 -- C/2017 K2
926Tenagra II Obs. in Arizona, 1 in MPEC 2017-N28 -- C/2015 ER61-B
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 5 in MPECs 2017-N06, 2017-N07, 2017-N08, 2017-N10 & 2017-N11 -- 2017 ML7, 2017 MK7, 2017 MH7, 2017 MG7, 2017 MF7
C51WISE in Earth polar orbit, 1 in MPEC 2017-N24 -- 2014 NE64
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 July '17

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 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
2017 MF7JPL Sentry14002063-206313.993e-07-6.88-6.880JPL: Computed at 22:49 June 30th Pacific time based on 12 observations spanning 4.0168 days (2017-Jun-24.47503 to 2017-Jun-28.491842). Diameter approximately 0.021 km. from weighted mean H=26.05.
2017 MY3JPL Sentry15422110-211017.613e-10-6.73-6.730JPL: Computed at 08:36 today Pacific time based on 16 observations spanning 9.8779 days (2017-Jun-21.56207 to 2017-Jul-01.43994). Diameter approximately 0.430 km. from weighted mean H=19.47.
2017 MB1JPL Sentry15422082-211742.38187e-08-4.46-4.670JPL: Computed at 07:52 today Pacific time based on 114 observations spanning 12.055 days (2017-Jun-19.31418 to 2017-Jul-01.36927). Diameter approximately 0.635 km. from weighted mean H=18.63.

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 1 July '17

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

1849Generated Traffic Report
1808Grabbed MPEC 2017-N28 - Comet C/2015 ER61-B (Panstarrs) - see above
1704Grabbed MPEC 2017-N26 - Comet C/2017 K2 (Panstarrs) - see above
Grabbed MPEC 2017-N27 - Comet C/2017 M4 (ATLAS) - see above
1542Noted that JPL Sentry has updated its 2017 MB1 risk assessment - see above
Noted that JPL Sentry has posted 2017 MY3 as an impact risk - see above
Grabbed MPEC 2017-N25 - Comet C/2017 M5 (Totas) - see above
1400Noted that JPL Sentry has posted 2017 MF7 as an impact risk - see above
Grabbed MPEC 2017-N11 - 2017 ML7 - see above
Grabbed MPEC 2017-N12 - 2017 MN7 - see above
Grabbed MPEC 2017-N13 - 2017 MP7 - see above
Grabbed MPEC 2017-N14 - 2017 MQ7 - see above
Grabbed MPEC 2017-N15 - 2017 MR7 - see above
Grabbed MPEC 2017-N16 - 2017 MS7 - see above
Grabbed MPEC 2017-N17 - 2017 MT7 - see above
Grabbed MPEC 2017-N18 - 2017 MV7 - see above
Grabbed MPEC 2017-N19 - 2017 MW7 - see above
Grabbed MPEC 2017-N20 - 2017 MM7 - see above
Grabbed MPEC 2017-N21 - 2017 MO7 - see above
Grabbed MPEC 2017-N22 - 2017 MU7 - see above
Grabbed MPEC 2017-N23 - 2017 MB7 - see above
Grabbed MPEC 2017-N24 - Daily Orbit Update - see above
0404Grabbed MPEC 2017-N01 - 2014 UN225 - see above
Grabbed MPEC 2017-N02 - 2007 MB4 - see above
Grabbed MPEC 2017-N03 - 2017 MC7 - see above
Grabbed MPEC 2017-N04 - 2017 MD7 - see above
Grabbed MPEC 2017-N05 - 2017 ME7 - see above
Grabbed MPEC 2017-N06 - 2017 MF7 - see above
Grabbed MPEC 2017-N07 - 2017 MG7 - see above
Grabbed MPEC 2017-N08 - 2017 MH7 - see above
Grabbed MPEC 2017-N09 - 2017 MJ7 - see above
Grabbed MPEC 2017-N10 - 2017 MK7 - see above