Contents  on 1 April '15

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 April '15

Seven objects reported inside ten LD

Today seven visitors are reported traveling inside a radius of ten lunar distances (LD) from Earth. Radar target 2015 FW117 comes its closest to our planet this time around, reaching 3.59 LD at 1553 UT, and NHATS target 2015 FK120 is inbound from 7.66 to 7.00 LD. The other five objects are all moving away. 2015 FA285 is outbound from 6.37 to 6.92 LD, intruder 2015 FM118 from 7.68 to 9.63 LD, and risk-listed 2015 FF36 from 8.18 to 9.99 LD, while NHATS target 2015 FT117 exits our ten-LD traffic reporting zone, passing from 8.15 to 10.40 LD, as does NHATS target 2015 FC, fleeing from 8.96 to 10.55 LD.

Next known to be coming into the neighborhood, NHATS target 2015 FN33 arrives inside ten LD on April 5th.

This report was generated at 1700 UTC with follow-up in today's DOU MPEC for 2015 FF36.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but puts a focus on transient natural objects that have recently approached the actually significant gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center, and thus also puts a focus on some of the most important and very best NEO observation work. 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 April '15

The MPC's NEO Confirmation Page has 93 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 93 objects listed. Of these, 57 were "one nighters." So far The Tracking News has counted a total of 108 listings on the NEOCP today.

New MPECs  on 1 April '15

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been three MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< OOC on 1 Apr. '15 >> MPEC 2015-G03 - "17:12 UT" - Observations and Orbits of Comets


MPEC 2015-G02 - "14:08 UT" - 2015 FP332


<< DOU on 1 Apr. '15 >>  MPEC 2015-G01 - "12:11 UT" - Daily Orbit Update

Observers  on 1 April '15

A total of 102 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 18 in MPEC 2015-G03 -- C/2015 F3, C/2015 C2, P/2014 W12, C/2014 W11, P/2014 L2, C/2013 C2, C/2013 A1, C/2010 S1, C/2009 F4, 305P, 284P, 201P, 117P, 108P, 88P, 70P, 32P, 15P
Z74Amanecer de Arrakis Obs., 2 in MPEC 2015-G03 -- C/2014 Q2, C/2013 A1
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2015-G02 -- 2015 FP332
C77Bernezzo Obs. in Italy, 2 in MPEC 2015-G03 -- C/2013 A1, 15P
C86Blanes Obs. in Spain, 5 in MPEC 2015-G03 -- C/2014 W11, C/2014 Q2, C/2013 X1, 110P, 32P
I99Blanquita Obs. in Spain, 5 in MPEC 2015-G03 -- C/2014 Q2, C/2013 V2, C/2013 A1, 32P, 22P
Q68Blue Mountains Obs. in New South Wales, 3 in MPEC 2015-G03 -- C/2014 R1, C/2013 C2, 22P
B59Borken Obs. in Germany, 1 in MPEC 2015-G03 -- 32P
B96Brixiis Obs. in Belgium, 13 in MPEC 2015-G03 -- P/2015 C1, C/2014 W11, C/2014 Q2, C/2013 V2, C/2013 A1, C/2006 S3, 110P, 70P, 53P, 32P, 22P, 10P, 4P
215Buchloe Obs. in Germany, 22 in MPEC 2015-G03 -- P/2015 D6, P/2015 D5, C/2015 D3, C/2015 D2, C/2015 B2, C/2015 B1, C/2014 R3, C/2014 Q2, C/2014 F2, C/2014 B1, C/2013 W2, C/2013 TW5, C/2013 H2, C/2013 G3, C/2012 A1, C/2010 S1, 172P, 156P, 129P, 119P, 53P, 15P
493Calar Alto Obs. in Spain, 1 in MPEC 2015-G02 -- 2015 FP332
W96Campo Catino Austral Obs. (CAO) in Chile, 24 in MPEC 2015-G03 -- C/2015 F4, C/2015 F2, P/2015 F1, C/2014 W9, C/2014 W6, C/2014 W11, C/2014 R1, C/2013 V2, C/2013 G9, C/2013 C2, C/2013 A1, C/2012 F3, C/2006 S3, 218P, 129P, 88P, 70P, 53P, 40P, 32P, 29P, 22P, 10P, 7P
I72Carpe Noctem Obs. in Spain, 6 in MPEC 2015-G03 -- C/2015 F3, C/2014 Q2, C/2013 V2, C/2013 A1, 32P, 22P
G36CASADO in Spain, 1 in MPEC 2015-G03 -- 32P
B53Casal Lumbroso Obs. in Italy, 2 in MPEC 2015-G03 -- C/2014 Q2, 110P
160Castelmartini Obs. in Italy, 15 in MPEC 2015-G03 -- C/2014 W2, C/2014 W11, C/2013 X1, C/2013 V4, C/2013 V2, C/2013 A1, 201P, 119P, 110P, 70P, 32P, 22P, 15P, 10P, 4P
703Catalina Sky Survey (CSS) in Arizona, 18 in MPEC 2015-G03 -- C/2015 D3, P/2014 X1, C/2014 W2, C/2014 G3, C/2013 V5, C/2013 UQ4, C/2013 U2, C/2013 P2, C/2013 G9, C/2012 K6, C/2006 S3, 305P, 201P, 129P, 70P, 15P, 10P, 4P
K51Celado Obs. in Italy, 1 in MPEC 2015-G03 -- C/2014 Q2
A77Chante-Perdrix Obs. in France, 11 in MPEC 2015-G03 -- C/2015 F3, C/2015 C2, C/2014 W2, C/2014 Q2, C/2013 A1, 119P, 65P, 53P, 32P, 22P, 10P
J01Cielo Profundo Obs. in Spain, 8 in MPEC 2015-G03 -- C/2014 Q2, C/2013 V5, C/2013 V2, C/2013 A1, 32P, 22P, 10P, 4P
B50Corner Obs. in Germany, 1 in MPEC 2015-G03 -- C/2014 Q2
Z39Costa Teguise Obs., 1 in MPEC 2015-G03 -- 32P
0953S. Nazarov via Crimean Astrophysical Obs. in the Ukraine, 1 in MPEC 2015-G03 -- C/2013 V2
I57Elche Obs. in Spain, 1 in MPEC 2015-G03 -- C/2013 A1
Z81Estrella de Mar Obs. in Spain, 5 in MPEC 2015-G03 -- C/2013 V2, C/2013 U2, C/2013 A1, 70P, 32P
372Geisei Obs. in Japan, 8 in MPEC 2015-G03 -- C/2015 F3, C/2015 C2, C/2014 Y1, P/2014 X1, C/2014 R1, C/2013 A1, 88P, 29P
K58Gevelsberg Obs., 1 in MPEC 2015-G03 -- 32P
203GiaGa Obs. in Italy, 1 in MPEC 2015-G03 -- C/2013 V2
B83Gieres Obs. in France, 1 in MPEC 2015-G03 -- C/2013 A1
E94Gisborne Obs. in New Zealand, 1 in MPEC 2015-G03 -- C/2006 S3
J95Great Shefford Obs. in England, 1 in MPEC 2015-G03 -- C/2015 F3
D88Hiratsuka Obs. in Japan, 11 in MPEC 2015-G03 -- C/2015 F3, P/2014 X1, C/2014 Q2, C/2013 U2, C/2013 TW5, C/2013 A1, C/2006 S3, 218P, 70P, 32P, 22P
250Hubble Space Telescope in Earth orbit, 1 in MPEC 2015-G03 -- C/2013 A1
987Isle of Man Obs. on the Isle of Man, 4 in MPEC 2015-G03 -- C/2014 Q2, 110P, 32P, 22P
H15ISON-NM Obs. in New Mexico, 3 in MPEC 2015-G03 -- P/2015 C1, C/2006 S3, 32P
U69"program code '"' (11) via iTelescope Obs. Auberry in northern California, 1 in MPEC 2015-G03 -- C/2013 A1
H06iTelescope Obs. Mayhill in New Mexico, 17 in MPEC 2015-G03 -- C/2014 Y1, C/2014 W9, C/2014 R1, C/2013 X1, C/2013 G9, C/2013 A1, C/2012 F3, C/2006 S3, 246P, 218P, 201P, 70P, 40P, 32P, 22P, 15P, 4P
H06`Erik Bryssinck in Belgium via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2015-G03 -- C/2014 Q2
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2015-G03 -- C/2015 D4
D90`Kevin Hills in England via iTelescope Obs. Moorook in South Australia, 16 in MPEC 2015-G03 -- C/2014 W6, C/2014 W11, C/2014 E2, C/2013 TW5, C/2013 C2, 218P, 158P, 119P, 116P, 110P, 70P, 53P, 32P, 29P, 22P, 4P
I892program code 2 via iTelescope Obs. Nerpio in Spain, 1 in MPEC 2015-G03 -- C/2014 Q2
Q62(P.S. Lau in Hong Kong via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2015-G03 -- 32P
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 4 in MPEC 2015-G03 -- C/2015 A1, C/2014 N2, C/2013 P2, 220P
Q62;Mike Mattiazzo in Victoria via iTelescope Obs. Siding Spring in New South Wales, 2 in MPEC 2015-G03 -- 218P, 88P
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 3 in MPEC 2015-G03 -- C/2014 A4, 70P, 22P
Q62{Nirmal Paul in India via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2015-G03 -- C/2013 C2
585Kiev Comet Station in the Ukraine, 7 in MPEC 2015-G03 -- C/2014 R1, C/2014 Q2, C/2013 V2, 110P, 32P, 17P, 4P
246KLENOT in the Czech Republic, 2 in MPEC 2015-G03 -- C/2014 W11, 110P
D95Kurihara Obs. in Japan, 27 in MPEC 2015-G03 -- C/2015 F3, C/2014 W9, C/2014 W6, C/2014 W11, C/2014 Q2, C/2014 G3, C/2014 B1, C/2014 A4, C/2013 X1, C/2013 W2, C/2013 V4, C/2013 V2, C/2013 UQ4, C/2013 TW5, C/2013 G9, C/2013 C2, C/2013 A1, C/2006 S3, 269P, 218P, 201P, 110P, 70P, 32P, 17P, 15P, 4P
350Kurohone Obs., 1 in MPEC 2015-G03 -- C/2015 C2
J67La Puebla de Vallbona Obs. in Spain, 1 in MPEC 2015-G03 -- C/2014 Q2
J38La Vara Obs. in Spain, 1 in MPEC 2015-G03 -- C/2014 Q2
067Lvov Univ. Obs. in the Ukraine, 4 in MPEC 2015-G03 -- C/2014 W11, C/2014 F2, C/2013 U2, C/2013 H2
C10Maisoncelles Obs. in France, 7 in MPEC 2015-G03 -- C/2014 W11, C/2013 V2, 70P, 32P, 22P, 10P, 4P
K32Maritime Alps Obs., 1 in MPEC 2015-G03 -- 110P
C41MASTER-II Obs. Kislovodsk in Russia, 6 in MPECs 2015-G01 & 2015-G03 -- C/2014 R1, C/2013 V2, 4401, 269P, 22P, 4P
K95MASTER-II Obs. Sutherland in South Africa, 4 in MPECs 2015-G01 & 2015-G03 -- C/2015 F4, 68348, 277142, 164201
C94MASTER-II Obs. Tunka in Russia, 1 in MPEC 2015-G03 -- C/2014 R1
5682David Tholen's team on Mauna Kea in Hawaii, 3 in MPECs 2015-G01 & 2015-G03 -- 2015 FN36, 2015 FF36, C/2013 A1
568_Marco Micheli on Mauna Kea in Hawaii, 1 in MPEC 2015-G03 -- P/2010 K2
152Moletai Obs. in Lithuania, 2 in MPEC 2015-G03 -- C/2015 F3, C/2014 Q2
213Montcabre Obs. in Spain, 7 in MPEC 2015-G03 -- P/2015 C1, C/2014 R1, C/2014 Q2, C/2013 V2, C/2013 A1, 32P, 22P
900Moriyama Obs. in Japan, 26 in MPEC 2015-G03 -- C/2014 Y1, P/2014 X1, C/2014 W11, C/2014 Q2, C/2014 G3, C/2014 B1, C/2014 A4, C/2013 X1, C/2013 V4, C/2013 V2, C/2013 TW5, C/2013 G9, C/2013 C2, C/2013 A1, C/2006 S3, 269P, 201P, 110P, 70P, 53P, 32P, 22P, 17P, 15P, 10P, 4P
V08Mountain Creek Ranch Obs., 8 in MPEC 2015-G03 -- C/2014 Q2, C/2013 X1, C/2013 V4, C/2011 J2, 201P, 110P, 108P, 17P
474Mt. John Obs. in New Zealand, 6 in MPEC 2015-G03 -- C/2015 D3, C/2015 D2, C/2015 B2, C/2015 A1, C/2014 W6, C/2014 A5
G96Mt. Lemmon Survey (MLS) in Arizona, 8 in MPEC 2015-G03 -- P/2015 D5, P/2015 C1, C/2015 B1, C/2013 P2, 314P, 156P, 129P, 16P
E07Murrumbateman Obs. in New South Wales, 2 in MPEC 2015-G03 -- C/2015 D3, C/2015 B2
D81Nagano Obs. in Japan, 5 in MPEC 2015-G03 -- C/2015 F3, C/2015 C2, C/2014 Q2, 70P, 32P
C47Nonndorf Obs. in Austria, 6 in MPEC 2015-G03 -- C/2014 Q2, C/2013 V2, C/2013 A1, 70P, 22P, 15P
Z73Nuevos Horizontes Obs., 1 in MPEC 2015-G03 -- C/2014 Q2
411Oizumi Obs. in Japan, 1 in MPEC 2015-G03 -- 116P
C23Olmen Obs. in Belgium, 27 in MPEC 2015-G03 -- C/2015 F3, C/2015 C2, C/2014 Y1, P/2014 X1, C/2014 W2, C/2014 W11, C/2014 R1, C/2014 Q2, C/2013 X1, C/2013 V4, C/2013 V2, C/2013 A1, C/2012 K8, C/2012 F3, C/2006 S3, 201P, 119P, 110P, 70P, 65P, 53P, 32P, 22P, 17P, 15P, 10P, 4P
I41Palomar Transient Factory in southern California, 1 in MPEC 2015-G03 -- C/2013 UQ4
F51Pan-STARRS 1 (PS1) in Hawaii, 26 in MPECs 2015-G02 & 2015-G03 -- 2015 FP332, P/2015 D5, C/2015 D3, P/2015 C1, C/2015 B1, P/2014 X1, C/2014 W9, C/2014 W6, C/2014 OE4, P/2014 L2, C/2013 UQ4, C/2013 U2, C/2013 P2, C/2012 U1, C/2012 K6, P/2011 U2, C/2006 S3, 295P, 221P, 169P, 156P, 129P, 106P, 65P, 53P, 22P
W95Panamanian San Pedro Atacama Obs. (OPSPA) in Chile, 4 in MPEC 2015-G03 -- C/2014 G3, C/2006 S3, 129P, 53P
B49Paus Obs. in Spain, 4 in MPEC 2015-G03 -- C/2014 W11, C/2013 V2, 269P, 32P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPEC 2015-G03 -- P/2015 D5, C/2014 W11, C/2014 Q2, C/2013 V2, C/2013 U2, C/2006 S3, 110P, 70P, 65P, 32P, 22P, 4P
W98Polonia Obs. in Chile, 1 in MPEC 2015-G03 -- C/2015 F2
Z93Polop Obs., 2 in MPEC 2015-G03 -- C/2013 V2, 32P
J53Posadas Obs. in Spain, 3 in MPEC 2015-G03 -- P/2014 X1, C/2014 W11, 32P
D29Purple Mtn. Obs. Xuyi Station in China, 9 in MPEC 2015-G03 -- P/2015 C1, C/2015 B1, C/2014 W2, 201P, 129P, 70P, 53P, 32P, 22P
L04ROASTERR-1 Obs. in Romania, 2 in MPEC 2015-G03 -- C/2015 D4, P/2014 X1
939Rodeno Obs. in Spain, 11 in MPEC 2015-G03 -- P/2014 X1, C/2014 W11, C/2014 Q2, C/2013 X1, C/2013 V2, C/2013 A1, 110P, 70P, 32P, 22P, 4P
247roving observer, 1 in MPEC 2015-G03 -- C/2015 F3
867Saji Obs., 2 in MPEC 2015-G03 -- 292P, 158P
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2015-G03 -- 65P
233San Vito Obs. in Italy, 2 in MPEC 2015-G03 -- C/2013 X1, 110P
B74Santa Maria de Montmagastrell Obs. in Spain, 5 in MPEC 2015-G03 -- P/2015 D5, C/2015 B1, C/2014 Q2, C/2013 V5, 15P
C95SATINO-1 in France, 1 in MPEC 2015-G03 -- C/2012 K1
K14Sencelles Obs. in Spain, 2 in MPEC 2015-G03 -- C/2014 Q2, 32P
510Siegen Obs. in Germany, 2 in MPEC 2015-G03 -- P/2015 C1, C/2014 Q2
G68Sierra Stars Obs. in northern California, 1 in MPEC 2015-G03 -- C/2013 C2
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2015-G03 -- 70P
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 8 in MPEC 2015-G03 -- C/2014 W6, C/2013 TW5, C/2013 C2, C/2012 F3, 70P, 10P, 7P, 4P
K90Sopot Obs. in Serbia, 5 in MPEC 2015-G03 -- C/2013 V2, C/2013 A1, C/2006 S3, 32P, 22P
G45Space Surveillance Telescope Atom Site in New Mexico, 25 in MPEC 2015-G03 -- C/2015 D3, P/2015 C1, C/2015 B1, P/2014 W4, C/2014 W2, C/2014 W11, P/2014 W1, C/2014 G3, C/2013 W2, C/2013 TW5, 305P, 269P, 218P, 201P, 172P, 129P, 119P, 110P, 70P, 65P, 53P, 32P, 22P, 16P, 4P
691Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2015-G03 -- C/2013 P2, 169P, 53P, 22P
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2015-G02 -- 2015 FP332
K21St. Saturnin les Avignon Obs., 1 in MPEC 2015-G03 -- 22P
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2015-G03 -- 110P
461SZTE Asteroid Program in Hungary, 6 in MPEC 2015-G03 -- P/2015 D5, C/2015 D4, C/2014 Y1, C/2014 B1, 17P, 15P
I81Tarbatness Obs. in Scotland, 19 in MPEC 2015-G03 -- P/2014 X1, C/2014 Q2, C/2014 F2, C/2013 X1, C/2013 V5, C/2013 V2, C/2013 U2, C/2013 A1, C/2012 U1, C/2012 K8, 201P, 110P, 70P, 65P, 32P, 22P, 15P, 10P, 4P
926Tenagra II Obs. in Arizona, 1 in MPEC 2015-G03 -- C/2013 V2
K41Vegaquattro Obs. in Italy, 1 in MPEC 2015-G03 -- 22P
H47Vicksburg Obs. in Mississippi, 8 in MPEC 2015-G03 -- C/2014 W11, C/2013 A1, C/2012 F3, 269P, 70P, 32P, 22P, 10P
Q65Warrumbungle Obs., 2 in MPEC 2015-G03 -- C/2013 C2, 88P
C51WISE in Earth polar orbit, 5 in MPEC 2015-G03 -- P/2014 X1, C/2014 R1, C/2013 A1, 108P, 40P
367Yatsuka Obs. in Japan, 10 in MPEC 2015-G03 -- C/2015 F3, C/2015 C2, C/2014 Q2, C/2014 A4, 201P, 110P, 32P, 17P, 15P, 4P
754Yerkes Obs. in Wisconsin, 1 in MPEC 2015-G03 -- C/2014 Y1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 April '15

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL 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 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
2015 FN36NEODyS16202100-211338.47e-07-5.52-5.640NEODyS: "Based on 35 optical observations (of which 1 are rejected as outliers) from 2015-03-23.221 to 2015-03-29.278."
JPL Sentry16002100-211339.5e-07-5.47-5.600JPL: "Analysis based on 34 observations spanning 6.0575 days (2015-Mar-23.21978 to 2015-Mar-29.27727)." Diameter approximately 0.057 km. from mean, weighted H=23.9.
2015 FF36NEODyS16202082-210433.72e-08-8.45-8.80NEODyS: "Based on 54 optical observations (of which 0 are rejected as outliers) from 2015-03-14.350 to 2015-03-26.919."
JPL Sentry16002073-211231.8e-06-6.71-6.860JPL: "Analysis based on 53 observations spanning 12.569 days (2015-Mar-14.349115 to 2015-Mar-26.918529)." Diameter approximately 0.017 km. from mean, weighted H=26.5.

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 April '15

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

1800Grabbed MPEC 2015-G03 - Observations and Orbits of Comets - see above
1700Generated Traffic Report
1620Noted that NEODyS has updated its 2015 FF36 risk assessment - see above
Noted that NEODyS has updated its 2015 FN36 risk assessment - see above
1600Noted that JPL Sentry has updated its 2015 FF36 risk assessment - see above
Noted that JPL Sentry has updated its 2015 FN36 risk assessment - see above
Grabbed MPEC 2015-G01 - Daily Orbit Update - see above
Grabbed MPEC 2015-G02 - 2015 FP332 - see above