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Ursa Astronomical Association
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Ursa Astronomical Association

Telescopic comet Schwassmann-Wachmann - 17.10.2020 at 02.09 - 17.10.2020 at 02.27 Orimattila, Artjärvi, Tähtikallio Observation number 94362

Visibility I / V

Kari Laihia, Toni Veikkolainen, Porin Karhunvartijat

29P / (Schwassmann-Wachmann) The periodic comet of the Jupiter family was filmed on the first night of the October 2020 Virtual Club Event. Outbreaks sometimes occur in a comet, which is why we have tried to portray many times. The comet's orbit is outside Jupiter's orbit and will come close to Jupiter 2037 less than 1au away. Discharges may increase the brightness by 1-5 mag. The size of the large comet's core is 60.4km. When photographing the comet was 4,913au away, the closest it was 4,747au on October 10, 2019. 1Picture. Average stack by comet, stretch with MaximDL Histogram Specification-Exponential filter.
2Picture The sum of the stack according to the stars. The picture shows an asteroid (339315) 2004 XW107 18.373mag, the motion is shown. Asteroid (82970) 2001 QY134 18.582mag, motion shown. Asteroid (253394) 2003 NZ12 18,967mag, motion shown. Asteroid (108045) 2001 FX155 19.158mag, motion shown. No other asteroids below 20.9mag.
3Picture. first measurable image2 measured, 2020-10-16T 23: 09: 21UT 2459139.46482JDUT 02h42m01.83s + 27d25'06.0 "N16.609mag Std Dev 102.288, JPL Horizon 23: 09: 21UT 02h42m01.86s + 27d25'05.4" T15.503mag .
4Picture. last image measured, 2020-10-16T 23: 26: 27UT 2459139.47670JDUT 02h42m01.51s + 27d25'05.2 "N16.607mag Std Dev 126.396, JPL Horizon 23: 26: 27UT 02h42m01.53s + 27d25'04.6" T15.503mag. TYC 1776-206-1 v.11.12mag stars used to calibrate brightness measurement.

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Additional information
  • Observation target
    • Comet
  • Visibility of the comet
    • Telescopic comet
  • Name of the observation target
    • 29P/Schwassmann-Wachmann
Technical information

Alluna RC16, C415 / 3320, Moravian G4-16000EC MkII, filter L, bin2 10 x 120s

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