Back C/2012 S1 Afrikaans C/2012 S1 AN مذنب آيسون Arabic C/2012 S1 BS Cometa C/2012 S1 (Ison) Catalan C/2012 S1 Czech C/2012 S1 (ISON) German Κομήτης C/2012 S1 Greek C/2012 S1 (ISON) Spanish سی/۲۰۱۲ اس۱ Persian
_by_TRAPPIST_on_2013-11-15.jpg) Comet ISON as captured by TRAPPIST on 15 November 2013 | |
| Discovery | |
|---|---|
| Discovered by | V. Nevsky A. Novichonok (at ISON-Kislovodsk D00)[1] |
| Discovery date | 21 September 2012 |
| Orbital characteristics | |
| Epoch | 14 December 2013 (JD 2456640.5)[2] |
| Observation arc | 2.15 years |
| Number of observations | 6682 |
| Orbit type | Oort cloud |
| Perihelion | 0.01244 AU (q)[2] |
| Eccentricity | 1.000000086 (epoch 1950)[3] 0.9999947 (near perihelion)[2] 1.0002 (epoch 2050)[3] |
| Orbital period | Ejection trajectory (epoch 2050)[3] |
| Max. orbital speed | 337.3 km/s (755,000 mph)[4] |
| Inclination | 62.4°[2] |
| Last perihelion | 28 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]
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