Contents  on 22 March '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 22 March '17

Nine objects reported inside ten LD

Today nine asteroidal objects are reported to be less than ten lunar distances (LD) from our home world. The two nearest are NHATS target 2017 FJ, which exits Earth's SOI (sphere of gravitational influence), outbound from 2.13 to 3.47 LD, and newly announced risk-listed 2017 FZ2, inbound from 3.91 to 2.36 LD and entering the SOI. New discovery 2017 FJ3 comes its closest today (2.57 LD at 2058 UTC) while lingering within our ten-LD traffic reporting sphere from March 3rd until April 12th.

Earth passage I D ~Size Distance Today  Notes
0.16 LD March 202017 FN1 3 m  4.54 to 8.57 LD intruder, risk - DOU
0.33 LD March 202017 FM1 4 m  2.45 to 4.72 LD intruder
1.70 LD tomorrow2017 FZ2 15 m  2.36 from 3.91 LD NEW, enters Earth SOI, risk - MPEC
1.74 LD March 202017 FK 11 m  3.74 to 5.79 LD NHATS target
1.98 LD yesterday2017 FJ 8 m  2.13 to 3.47 LD exits Earth SOI, NHATS target - DOU
2.57 LD today2017 FJ3 4 m  2.57 LD NEW, Earth closest at 2058 UTC - MPEC
4.38 LD March 172017 EG3 18 m  9.48 to 11.15 LD exits ten LD, NHATS target
5.75 LD March 272017 FF3 14 m  6.33 from 6.63 LD NEW - MPEC
7.63 LD March 262015 TC25 4 m  8.07 from 8.34 LD radar/NHATS target, risk
Approaching
4.57 LD April 192014 JO25 812 m  < 10 LD April 18, radar target
7.92 LD May 292017 CS 446 m  < 10 LD May 26, radar target - DOU
9.08 LD March 272017 FK3 21 m  < 10 LD March 25, NEW - MPEC
9.08 LD April 22017 FV 47 m  < 10 LD March 31, risk

This report was generated at 1855 UTC with nine discoveries including 2017 FZ2, 2017 FJ3, and two others marked "NEW" in the traffic table here. Five others have already left ten LD: intruder 2017 FD3 (MPEC), which passed us at 0.47 LD five days ago, risk-listed 2017 FA3 (MPEC) with a 1.72-LD passage on March 17th, 2017 FW2 (MPEC) 5.00 LD March 16th, 2017 FU2 (MPEC) 7.26 LD March 16th, and 2017 FM2 (MPEC) 7.00 LD March 6th. In addition, we note that JPL is showing an unobserved passage by 2017 FZ2 last March at 7.60 LD as well as a passage by a tenth discovery, distant 2017 FB3 (MPEC), in September 2015 at about 8.7 LD.
        Today's DOU MPEC carries follow-up for three objects in the traffic table and for four departed objects: 2017 EZ2, NHATS targets 2017 FR and 2017 DX34, and radar target 1998 SL36, plus astrometry from last June for NHATS target 2016 LY10.



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. "Distant" is used here to describe an object that has come within ten LD since A/CC began these traffic reports (2007) but is not now so close. 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 22 March '17

The MPC's NEO Confirmation Page has 115 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 115 objects listed. Of these, 55 were "one nighters." So far The Tracking News has counted a total of 168 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 March '17

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 29 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2017-F80 - "17:57 UT" - 2015 PF312


MPEC 2017-F79 - "17:55 UT" - 2015 PD312


MPEC 2017-F78 - "17:13 UT" - 2015 KF


MPEC 2017-F77 - "15:51 UT" - 2017 FK3


MPEC 2017-F76 - "15:47 UT" - 2017 FH3


MPEC 2017-F75 - "15:36 UT" - 2017 FF3


MPEC 2017-F74 - "15:32 UT" - 2017 FJ3


MPEC 2017-F73 - "15:28 UT" - 2017 FD3


MPEC 2017-F72 - "15:25 UT" - 2017 FG3


MPEC 2017-F71 - "15:22 UT" - 2017 FY2


MPEC 2017-F70 - "15:18 UT" - 2017 FE3


MPEC 2017-F69 - "15:14 UT" - 2017 FV2


MPEC 2017-F68 - "15:11 UT" - 2017 FC3


MPEC 2017-F67 - "15:08 UT" - 2017 FB3


MPEC 2017-F66 - "15:04 UT" - 2017 FA3


MPEC 2017-F65 - "15:00 UT" - 2017 FZ2


MPEC 2017-F64 - "14:56 UT" - 2017 FX2


MPEC 2017-F63 - "14:53 UT" - 2017 FW2


MPEC 2017-F62 - "14:49 UT" - 2017 FU2


MPEC 2017-F61 - "14:45 UT" - 2017 FT2


MPEC 2017-F60 - "14:43 UT" - 2017 FS2


MPEC 2017-F59 - "14:40 UT" - 2017 FR2


MPEC 2017-F58 - "14:36 UT" - 2017 FQ2


MPEC 2017-F57 - "14:23 UT" - 2017 FP2


MPEC 2017-F56 - "14:19 UT" - 2017 FO2


MPEC 2017-F55 - "14:15 UT" - 2017 FN2


MPEC 2017-F54 - "14:12 UT" - 2017 FM2


<< DOU on 22 Mar. '17 >>  MPEC 2017-F53 - "12:04 UT" - Daily Orbit Update


MPEC 2017-F52 - "02:08 UT" - 2017 AK21 = 2017 CP3

Observers  on 22 March '17

A total of 42 observers appear in today's MPECs.

CodeObserver / observatory
705"Kristie Nault via Apache Point Obs. in New Mexico, 9 in MPECs 2017-F53, 2017-F56 & 2017-F64 -- 2017 FX2, 2017 FO2, 2016 UZ56, 2015 FF37, 2015 AX44, 2014 VN6, 2014 LN14, 2014 JR55, 2003 UB5
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2017-F53, 2017-F63 & 2017-F65 -- 2017 FZ2, 2017 FW2, 2017 ED4, 2017 EC, 2017 CR32, 2017 BG85, 2013 YK148, 2006 UM, 143404, 11398
T05ATLAS Haleakala in Hawaii, 9 in MPEC 2017-F53 -- 2017 FD1, 2006 EC1, 54789, 484795, 4179, 3352, 1627, 887, 433
T08ATLAS Mauna Loa in Hawaii, 4 in MPECs 2017-F53 & 2017-F65 -- 2017 FZ2, 2017 DT37, 2017 CR32, 2017 AC5
C77Bernezzo Obs. in Italy, 1 in MPEC 2017-F63 -- 2017 FW2
300Bisei Spaceguard Center in Japan, 3 in MPECs 2017-F63, 2017-F65 & 2017-F70 -- 2017 FZ2, 2017 FW2, 2017 FE3
160Castelmartini Obs. in Italy, 12 in MPEC 2017-F53 -- 96590, 54789, 483656, 483459, 40267, 370702, 317255, 248083, 138155, 12538, 10636, 5131
703Catalina Sky Survey (CSS) in Arizona, 4 in MPECs 2017-F53, 2017-F63, 2017-F65 & 2017-F73 -- 2017 FZ2, 2017 FW2, 2017 FQ, 2017 FD3
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 14 in MPECs 2017-F53, 2017-F55, 2017-F61, 2017-F64, 2017-F70 & 2017-F73 -- 2017 FX2, 2017 FT2, 2017 FN2, 2017 FH1, 2017 FE3, 2017 FD3, 2017 EZ2, 2017 ES2, 2017 EQ13, 2017 DX34, 2017 DV37, 2017 DT37, 2017 DS36, 2017 BX6
958Dax Obs. in France, 1 in MPEC 2017-F65 -- 2017 FZ2
W847David Gerdes in Michigan via DECam in Chile, 2 in MPECs 2017-F79 & 2017-F80 -- 2015 PF312, 2015 PD312
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 2 in MPECs 2017-F53 & 2017-F65 -- 2017 FZ2, 2017 AC5
K73Gravina Obs. in Italy, 1 in MPEC 2017-F53 -- 11398
J95Great Shefford Obs. in England, 9 in MPECs 2017-F53, 2017-F54, 2017-F62, 2017-F63, 2017-F65, 2017-F74, 2017-F75, 2017-F76 & 2017-F77 -- 2017 FZ2, 2017 FW2, 2017 FU2, 2017 FN1, 2017 FM2, 2017 FK3, 2017 FJ3, 2017 FH3, 2017 FF3
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2017-F53 -- 475665
Q62|Sergio Foglia in Italy via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-F65 -- 2017 FZ2
W85LCOGT Cerro Tololo A in Chile, 1 in MPEC 2017-F61 -- 2017 FT2
V37LCOGT Fort Davis in Texas, 2 in MPECs 2017-F56 & 2017-F59 -- 2017 FR2, 2017 FO2
T04LCOGT Haleakala OGG B#2 in Hawaii, 1 in MPEC 2017-F76 -- 2017 FH3
K91LCOGT Sutherland A in South Africa, 3 in MPECs 2017-F64, 2017-F67 & 2017-F69 -- 2017 FX2, 2017 FV2, 2017 FB3
K92LCOGT Sutherland B in South Africa, 1 in MPEC 2017-F55 -- 2017 FN2
K93LCOGT Sutherland C in South Africa, 2 in MPECs 2017-F64 & 2017-F68 -- 2017 FX2, 2017 FC3
130Lumezzane Obs. in Italy, 8 in MPEC 2017-F53 -- 2017 EC, 2013 YK148, 483459, 317255, 175189, 138155, 10636, 5189
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2017-F53, 2017-F62, 2017-F63, 2017-F66 & 2017-F72 -- 2017 FW2, 2017 FU2, 2017 FG3, 2017 FD1, 2017 FA3
568Mauna Kea in Hawaii, 1 in MPEC 2017-F53 -- 2017 FD1
474Mt. John Obs. in New Zealand, 6 in MPECs 2017-F53, 2017-F61, 2017-F62 & 2017-F65 -- 2017 FZ2, 2017 FU2, 2017 FT2, 2017 FR, 2017 FP, 2017 DQ15
G96Mt. Lemmon Survey (MLS) in Arizona, 32 in MPECs 2017-F52, 2017-F53, 2017-F56, 2017-F57, 2017-F58, 2017-F62, 2017-F65, 2017-F66, 2017-F67, 2017-F68, 2017-F72, 2017-F73, 2017-F74, 2017-F75 & 2017-F77 -- 2017 FZ2, 2017 FU2, 2017 FQ2, 2017 FP2, 2017 FO2, 2017 FK3, 2017 FJ3, 2017 FJ1, 2017 FG3, 2017 FF3, 2017 FD3, 2017 FC3, 2017 FB3, 2017 FA3, 2017 EH, 2017 EC, 2017 DA109, 2017 BU31, 2017 AP20, 2017 AK21, 2015 BE513, 2014 AD17, 2011 ED78, 2010 DP, 90075, 486739, 483662, 39796, 303174, 250620, 23606, 162181
Z80Northolt Branch Obs. in England, 2 in MPEC 2017-F53 -- 2017 FD1, 143404
J43Oukaimeden Obs. in Morocco, 3 in MPECs 2017-F52 & 2017-F53 -- 2017 AP20, 2017 AK21, 4179
F51Pan-STARRS 1 (PS1) in Hawaii, 38 in MPECs 2017-F52, 2017-F53, 2017-F54, 2017-F55, 2017-F56, 2017-F58, 2017-F59, 2017-F60, 2017-F61, 2017-F64, 2017-F67, 2017-F68, 2017-F69, 2017-F70, 2017-F71 & 2017-F76 -- 2017 FY2, 2017 FX2, 2017 FV2, 2017 FU, 2017 FT2, 2017 FS2, 2017 FR2, 2017 FQ2, 2017 FO2, 2017 FN2, 2017 FM2, 2017 FH3, 2017 FE3, 2017 FC3, 2017 FB3, 2017 EP13, 2017 DC109, 2017 CN32, 2017 AK21, 2014 HD3, 2011 QP96, 2010 DP, 2009 FR30, 2003 FR6, 1996 FS1, 482344, 465402, 381906, 363305, 363069, 31662, 222073, 217807, 142781, 7480, 7474, 4954, 2059
W25RMS Obs., 4 in MPECs 2017-F63, 2017-F65, 2017-F73 & 2017-F75 -- 2017 FZ2, 2017 FW2, 2017 FF3, 2017 FD3
L04ROASTERR-1 in Romania, 3 in MPECs 2017-F53, 2017-F63 & 2017-F65 -- 2017 FZ2, 2017 FW2, 2017 FD1
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2017-F54 -- 2017 FM2
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2017-F63 -- 2017 FW2
W887program code 7 via Slooh.com Chile Obs. in Chile, 2 in MPEC 2017-F53 -- 2003 OV, 1998 SL36
691Spacewatch 0.9m telescope in Arizona, 9 in MPECs 2017-F52, 2017-F53, 2017-F57, 2017-F63, 2017-F69, 2017-F72 & 2017-F76 -- 2017 FW2, 2017 FV2, 2017 FP2, 2017 FH3, 2017 FG3, 2017 CS, 2017 AK21, 2015 BY310, 2014 NB39
291Spacewatch 1.8m telescope in Arizona, 15 in MPECs 2017-F53, 2017-F55, 2017-F56, 2017-F58, 2017-F59, 2017-F60, 2017-F61, 2017-F64, 2017-F66, 2017-F67, 2017-F68, 2017-F70, 2017-F71, 2017-F72 & 2017-F73 -- 2017 FY2, 2017 FX2, 2017 FT2, 2017 FS2, 2017 FR2, 2017 FQ2, 2017 FO2, 2017 FN2, 2017 FG3, 2017 FE3, 2017 FD3, 2017 FC3, 2017 FB3, 2017 FB1, 2017 FA3
V78Spirit Marsh Obs. in Minnesota, 1 in MPEC 2017-F53 -- 143404
I93St. Pardon de Conques Obs. in France, 3 in MPECs 2017-F63, 2017-F65 & 2017-F75 -- 2017 FZ2, 2017 FW2, 2017 FF3
I52Steward Obs. Mt. Lemmon Station in Arizona, 7 in MPEC 2017-F53 -- 2017 FN, 2017 FD1, 2017 FA1, 2017 ET22, 2017 EL, 2017 EA3, 2017 BL31
926Tenagra II Obs. in Arizona, 15 in MPECs 2017-F53, 2017-F55, 2017-F57, 2017-F58, 2017-F59, 2017-F63, 2017-F65, 2017-F69, 2017-F74, 2017-F75, 2017-F76 & 2017-F77 -- 2017 FZ2, 2017 FY, 2017 FW2, 2017 FV2, 2017 FR2, 2017 FQ2, 2017 FP2, 2017 FN2, 2017 FK3, 2017 FJ3, 2017 FJ, 2017 FH3, 2017 FF3, 2017 FD1, 2017 FC1
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2017-F53 & 2017-F78 -- 2016 LY10, 2015 KF
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 22 March '17

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL 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 JPL NEO Program 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 FG3JPL Sentry17482024-2114482.7e-08-6.31-6.800JPL: "Analysis based on 18 observations spanning 1.9282 days (2017-Mar-20.24135 to 2017-Mar-22.169521)." Diameter approximately 0.095 km. from mean, weighted H=22.8.
2017 FC3JPL Sentry17482025-21142032.0e-05-3.78-4.750JPL: "Analysis based on 11 observations spanning 1.9506 days (2017-Mar-19.32518 to 2017-Mar-21.27577)." Diameter approximately 0.067 km. from mean, weighted H=23.5.
2017 FA3JPL Sentry1815211611.4e-08-9.60-9.600JPL: "Analysis based on 20 observations spanning 2.9008 days (2017-Mar-19.34252 to 2017-Mar-22.24337)." Diameter approximately 0.008 km. from mean, weighted H=28.1.
2017 FZ2JPL Sentry17142101-211543.2e-05-5.69-5.920JPL: "Analysis based on 82 observations spanning 3.0821 days (2017-Mar-19.34252 to 2017-Mar-22.42459)." Diameter approximately 0.015 km. from mean, weighted H=26.8.
2017 FN1JPL Sentry16322033-207273.3e-04-5.53-5.550JPL: "Analysis based on 18 observations spanning .47281 days (2017-Mar-20.356 to 2017-Mar-20.828814)." Diameter approximately 0.003 km. from mean, weighted H=30.6.
2017 FC1NEODyS1930206412.02e-05-5.16-5.160NEODyS: "Based on 32 optical observations (of which 0 are rejected as outliers) from 2017-03-18.209 to 2017-03-21.306."
JPL Sentry1602206411.3e-05-5.35-5.350JPL: "Analysis based on 32 observations spanning 3.0974 days (2017-Mar-18.20785 to 2017-Mar-21.30528)." Diameter approximately 0.024 km. from mean, weighted H=25.8.
2017 FB1NEODyS19302092-2117241.42e-06-4.95-5.440NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2017-03-18.208 to 2017-03-21.257."
JPL Sentry16322095-2117193.1e-06-4.62-5.210JPL: "Analysis based on 23 observations spanning 3.0491 days (2017-Mar-18.20739 to 2017-Mar-21.25644)." Diameter approximately 0.077 km. from mean, weighted H=23.2.
2017 FVNEODyS19302095-2117415.64e-06-5.17-5.550NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2017-03-17.266 to 2017-03-20.333."
2017 DW119NEODyS19302023-206727.74e-07-6.17-6.20NEODyS: "Based on 7 optical observations (of which 0 are rejected as outliers) from 2017-02-22.134 to 2017-02-24.856."

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 March '17

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

1930Noted that NEODyS has posted 2017 DW119 as an impact risk - see above
Noted that NEODyS has updated its 2017 FB1 risk assessment - see above
Noted that NEODyS has updated its 2017 FC1 risk assessment - see above
Noted that NEODyS has updated its 2017 FV risk assessment - see above
1855Generated Traffic Report
1815Noted that JPL Sentry has posted 2017 FA3 as an impact risk - see above
Grabbed MPEC 2017-F79 - 2015 PD312 - see above
Grabbed MPEC 2017-F80 - 2015 PF312 - see above
1748Noted that JPL Sentry has posted 2017 FC3 as an impact risk - see above
Noted that JPL Sentry has posted 2017 FG3 as an impact risk - see above
1714Noted that JPL Sentry has posted 2017 FZ2 as an impact risk - see above
Grabbed MPEC 2017-F78 - 2015 KF - see above
1632Noted that JPL Sentry has updated its 2017 FB1 risk assessment - see above
Noted that JPL Sentry has updated its 2017 FN1 risk assessment - see above
1602Noted that JPL Sentry has updated its 2017 FC1 risk assessment - see above
Grabbed MPEC 2017-F75 - 2017 FF3 - see above
Grabbed MPEC 2017-F76 - 2017 FH3 - see above
Grabbed MPEC 2017-F77 - 2017 FK3 - see above
1539Grabbed MPEC 2017-F69 - 2017 FV2 - see above
Grabbed MPEC 2017-F70 - 2017 FE3 - see above
Grabbed MPEC 2017-F71 - 2017 FY2 - see above
Grabbed MPEC 2017-F72 - 2017 FG3 - see above
Grabbed MPEC 2017-F73 - 2017 FD3 - see above
Grabbed MPEC 2017-F74 - 2017 FJ3 - see above
1515Grabbed MPEC 2017-F53 - Daily Orbit Update - see above
Grabbed MPEC 2017-F54 - 2017 FM2 - see above
Grabbed MPEC 2017-F55 - 2017 FN2 - see above
Grabbed MPEC 2017-F56 - 2017 FO2 - see above
Grabbed MPEC 2017-F57 - 2017 FP2 - see above
Grabbed MPEC 2017-F58 - 2017 FQ2 - see above
Grabbed MPEC 2017-F59 - 2017 FR2 - see above
Grabbed MPEC 2017-F60 - 2017 FS2 - see above
Grabbed MPEC 2017-F61 - 2017 FT2 - see above
Grabbed MPEC 2017-F62 - 2017 FU2 - see above
Grabbed MPEC 2017-F63 - 2017 FW2 - see above
Grabbed MPEC 2017-F64 - 2017 FX2 - see above
Grabbed MPEC 2017-F65 - 2017 FZ2 - see above
Grabbed MPEC 2017-F66 - 2017 FA3 - see above
Grabbed MPEC 2017-F67 - 2017 FB3 - see above
Grabbed MPEC 2017-F68 - 2017 FC3 - see above
0410Grabbed MPEC 2017-F52 - 2017 AK21 = 2017 CP3 - see above