Comet ISON

C/2012 S1 (ISON)
Comet ISON as captured by TRAPPIST on 15 November 2013
Discovery
Discovered byV. Nevsky
A. Novichonok
(at ISON-Kislovodsk D00)[1]
Discovery date21 September 2012
Orbital characteristics
Epoch14 December 2013
(JD 2456640.5)[2]
Observation arc2.15 years
Number of
observations		6682
Orbit typeOort cloud
Perihelion0.01244 AU (q)[2]
Eccentricity1.000000086 (epoch 1950)[3]
0.9999947 (near perihelion)[2]
1.0002 (epoch 2050)[3]
Orbital periodEjection trajectory (epoch 2050)[3]
Max. orbital speed337.3 km/s (755,000 mph)[4]
Inclination62.4°[2]
Last perihelion28 November 2013[2]

Comet ISON, formally known as C/2012 S1, was a sungrazing comet from the Oort cloud which was discovered on 21 September 2012 by Vitaly Nevsky (Віталь Неўскі, Vitebsk, Belarus) and Artyom Novichonok (Артём Новичонок, Kondopoga, Russia).[5]

  1. ^ Cite error: The named reference Remanzacco was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference MPEC2013-W16 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference barycenter was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference perihelion-kms was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Trigo-Rodriguez2013 was invoked but never defined (see the help page).