Comet C/2013 A1 (Siding Spring) near the globular cluster NGC 362

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© Velimir Popov & Emil Ivanov 2014
Size: 2000 px

C/2013 A1 (Siding Spring) is an Oort cloud comet discovered on 3 January 2013 by Robert H. McNaught at Siding Spring Observatory using the 0.5-meter (20") Uppsala Southern Schmidt Telescope. At the time of discovery it was 7.2 AU from the Sun and located in the constellation Lepus. Comet C/2013 A1 probably took millions of years to come from the Oort cloud. After leaving the planetary region of the Solar System, the post-perihelion orbital period (epoch 2050) is estimated to be roughly 1 million years. On this image taken on August 28th 2014 from 23:00 until 23:30 LT, the comet was near the globular cluster NGC 362, which appears visually near Small Magellanic Cloud, but really is "only" 28 000 ly from Earth.

Image details


Center of field RA 00:27:55 (h:m:s)
Center of field DE -72:17:38 (deg:m:s)
Size 57.3 x 43.2 (arcmin)
Pixel scale: 1.03 (arcsec/pixel)
Orientation: Up is -4.04 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" f 3,6 Astrograph (ASA)
Mount: ASA DDM85
Camera: FLI MicroLine 8300 CCD camera
Filters: Red, Green, Blue, Astrodon
Dates/Times: 28 August 2014
Location: Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2"
Exp. Details: R:3x2min, G:3x2min, B:3x2min,, Bin 1
  Total Exposure Time - 18 min
More details: Dark and flat frames reduction,
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2014. All Rights Reserved
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