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Comet C/2013 A1 (Siding Spring)

Object information

Comet Siding Spring (C/2013 A1), an Oort cloud comet, was discovered on January 3, 2013. This comet has attracted some attention, since it is goig to pass very closely to Mars on October, 19 2014, with a small risk of impact with the Red Planet.

This site shows the current location in the sky, and other relevant information about Comet ISON in real time. Comet's precise position is obtained from the JPL Horizons service which provides ephemerides for solar system bodies.

This finder chart shows an accurate view of the star field surrounding the comet, simulating a telesopic view. It is obtained from the Digitized Sky Surcvey 2, which is a photographic archive covering large part of the sky.

The chart covers an area of 45x30 arc minutes, which is roughly equivalent of full Moon's apparent size.

Follow http://blog.ison2013.org if you are interested in daily pictres of Comet ISON.

Latest updates

A high precision photographic sky map showing the position of Comet C/2013 A1 (Siding Spring) in real time.

Current close conjunctions

List of bright objects (stars brighter than magnitude 9.0 and galaxies brighter than magmitude 14.0) close to Comet C/2013 A1 (Siding Spring) (less than 1.5 degrees):

TypeNameMagnitudeArDec
StarHIP 124667.513602h 40m 31s-24° 08’ 07”
StarHIP 125218.528802h 41m 08s-24° 29’ 45”
StarHIP 126158.804202h 42m 09s-25° 18’ 27”
StarHIP 126668.291202h 42m 44s-25° 19’ 08”
StarHIP 127798.945402h 44m 14s-25° 29’ 55”
StarHIP 127806.892202h 44m 14s-25° 29’ 43”
StarHIP 127888.148802h 44m 21s-24° 51’ 04”
StarHIP 127978.309802h 44m 28s-24° 24’ 54”
StarHIP 128648.200802h 45m 22s-24° 39’ 07”
StarHIP 129207.255202h 46m 08s-25° 20’ 04”
StarHIP 130667.915802h 47m 57s-24° 47’ 58”
StarHIP 131348.132602h 48m 55s-24° 36’ 35”
StarHIP 131976.041402h 49m 50s-24° 33’ 35”

Astronomy databases

This online sky chart is created using the following astronomy databases and services:

  1. The Digitized Sky Survey, a photographic survey of the whole sky created using images from different telescopes, including the Oschin Schmidt Telescope on Palomar Mountain
  2. The Hipparcos Star Catalogue, containing more than 100.000 bright stars
  3. The PGC 2003 Catalogue, containing information about 1 million galaxies
  4. The GSC 2.3 Catalogue, containing information about more than 2 billion stars and galaxies
Please see the acknowledgements section.

About the data, and how to use it

TheSkyLive.com offers live information, ephemeris computations, astronomical sky charts for the most important Solar System objects. You can use the live position charts during your observation sessions, to point your telescope and identify the object on the sky background. The ephemeris computations feature can be used to plan your astronomical observations in the future.

Please note: we aim to provide high quality data obtained from the JPL Horizons ephemeris service. Please keep in mind that for objects like comets, there might be high discrepancies between the magnitude information we are showing here and the actual value. This happens because comets' magnitude is highly influenced by physical phenomena which can be hardly modelled and calculated in advance.

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