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The path of Comet ISON from December 2012 through October 2013 as it passed through Gemini, Cancer, and Leo. On 1 October 2013, Comet ISON passed within 0.07 AU (10 million km; 6.5 million mi) of Mars. Between 29 September and 2 October, the Mars Reconnaissance Orbiter (MRO) detected Comet ISON. [50]
From 12 December until 14 January 2014, the comet was in the constellation Hercules. On 14 December 2013, it passed the star Zeta Herculis . [ 8 ] The comet came to perihelion (closest approach to the Sun) on 22 December 2013 at a distance of 0.81 AU (121,000,000 km; 75,000,000 mi) from the Sun. [ 2 ] At perihelion, the comet had an elongation ...
C/2024 S1 (ATLAS) (previously had the temporary designation A11bP7I) was a sungrazing comet that was discovered from the ATLAS–HKO in Hawaii on 27 September 2024. The comet passed its perihelion on 28 October 2024, at a distance of about 0.008 AU (1.2 million km; 0.74 million mi) from the barycenter of the Solar System, [1] and disintegrated.
The orbit of the comet has a striking similarity with the orbit of the weak December sigma Virginids (#428) meteor shower, which peaks on 20–22 December, but seems to be active from December 1 to January 10. The shower seems to be the same as the epsilon Virginids (#513). The peak zenithal hourly rate is about 1.5 for visual meteors. [4] [5] [6]
On September 21, 2012, Vitali Nevski and Artyom Novichonok, using the International Scientific Optical Network of telescopes (ISON), discovered the comet C/2012 S1, known as "Comet ISON". [109] Its orbit was expected to bring it within 0.429 AU (64,200,000 km; 39,900,000 mi) of Earth on December 26, 2013. [110]
Comet Tsuchinshan-ATLAS has an 80,000 year orbit and, it just so happens, that it is now approaching its closest pass to Earth. On Wednesday, the comet made its closest approach to our sun and on ...
ISON is managed by the Keldysh Institute of Applied Mathematics, part of the Russian Academy of Sciences. [2] [3] It was credited for the discovery of comets C/2010 X1 (Elenin), [4] P/2015 PD 229, [5] and C/2012 S1 (ISON), [6] the latter popularly known as Comet ISON. The minor planet 365756 ISON is named for the network. [7]
P/2015 PD 229 (Cameron–ISON) is a periodic comet that was initially thought to be an active centaur upon discovery. It orbits the Sun between Jupiter and Saturn once every 19.2 years, and has appeared to have made several close encounters with the giant planets from 1889 to 1949. [ 4 ]