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Ursa Astronomical Association

Telescopic comet LONEOS - 17.3.2017 at 22.57 Helsinki, Maunula Observation number 61987

Visibility I / V

Jorma Ryske, Etelä-Suomen kosmol. seura

Comet 315P / 2013 V6 (LONEOS) may have had a small eruption on March 15, 2017, according to some international comet forums. In my picture, it’s about as bright as a couple of weeks ago, but the tail is a little different. Near the comet on the left is the star GSC 2524: 606 mag 15.03. The comet clearly distinguishes between a small almost star-like coma and a short tail, the diameter of the coma being 20 "and the tail 80" in the direction PA 210 °. The animation is cropped and shows the movement of the comet for an hour.

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Additional information
  • Observation target
    • Comet
  • Name of the observation target
    • 315P/LONEOS
    • Erittäin heikosti näkyvä
  • Tail length
  • 80 arc seconds
  • Coma diameter
  • 20 kaarisekuntia
  • Weather
    • +1C
  • Title for the comet
    • Telescopic comet
Technical information

SW 200mm / F4, Atik314L +, MPCC, CLS filter, CEM60. FOV 38'x 28 '. Exposures 31x120s = 62min from March 17, 2017 10:57 PM EET. North at the top, east at the left.

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