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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).
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comet ison 2013 magnitude perihelion observations november 2012 discovery mi passed sun bright january ison's might solar apparent images however
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Comet ISON | Apparent magnitude | –2.0 (2013 apparition) | 1.00 | infobox |
| Comet ISON | Comet total magnitude (M1) | 10.2 | 1.00 | infobox |
| Comet ISON | Dimensions | 0.6–1.4 km (0.37–0.87 mi) | 1.00 | infobox |
| Comet ISON | Discovered by | Vitaly Nevsky Artyom Novichonok | 1.00 | infobox |
| Comet ISON | Discovery date | 21 September 2012 | 1.00 | infobox |
| Comet ISON | Discovery site | ISON–Kislovodsk (D00) | 1.00 | infobox |
| Comet ISON | Eccentricity | 1.000000086 (epoch 1950) 0.9999947 (near perihelion) 1.0002 (epoch 2050) | 1.00 | infobox |
| Comet ISON | Epoch | 14 December 2013 (JD 2456640.5) | 1.00 | infobox |
| Comet ISON | Inclination | 62.4° | 1.00 | infobox |
| Comet ISON | Last perihelion | 28 November 2013 | 1.00 | infobox |
| Comet ISON | Max. orbital speed | 337.3 km/s (755,000 mph; 1.214 million km/h; 209.6 mi/s) | 1.00 | infobox |
| Comet ISON | Number of observations | 6,682 | 1.00 | infobox |
| Comet ISON | Observation arc | 2.15 years | 1.00 | infobox |
| Comet ISON | Orbit type | Oort cloud | 1.00 | infobox |
| Comet ISON | Orbital period | Ejection trajectory (epoch 2050) | 1.00 | infobox |
| Comet ISON | Perihelion | 0.01244 AU (2.68 R☉) | 1.00 | infobox |
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