C/2012 S1
Also known as Comet ISON
comet discovered in 2012, with a close approach to Earth in December 2013
Key facts
- Discovered by
- Vitaly Nevsky , Artyom Novichonok
- Discovery site
- ISON –Kislovodsk ( D00 )
- Discovery date
- 21 September 2012
- Epoch
- 14 December 2013 ( JD 2456640.5)
- Observation arc
- 2.15 years
- Number of observations
- 6,682
- Orbit type
- Oort cloud
- Perihelion
- 0.01244 AU (2.68 R ☉ )
- Eccentricity
- 1.000000086 (epoch 1950) , 0.9999947 (near perihelion) , 1.0002 (epoch 2050)
- Orbital period
- Ejection trajectory (epoch 2050)
- Max orbital speed
- 337.3 km/s (755,000 mph; 1.214 million km/h; 209.6 mi/s)
- Inclination
- 62.4°
~19 min read
Article
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).
History