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Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

Telescopic comet Mrkos - 14.3.2020 at 22.03 - 14.3.2020 at 22.23 Orimattila, Artjärvi, Tähtikallio Observation number 89724

Visibility Unclassified


124P / (Mrkos) The periodic comet of the Jupiter family was filmed on the second night of the March work. The asteroid-like comet is now closest to the earth and thus well described. The comet was discovered by Czech astronomer Antonin Mrkos at the Klet Observatory on March 16, 1991. Antonin Mrkos has found a total of 13 comets and 274 asteroids, source Wikipedia https://en.wikipedia.org/wiki/Antonín_Mrkos . In his youth, Antonin was an avid amateur astronomer who also made his own telescopes. The largest lens was as much as 65cm, source BLANSKÝ FOREST & NETOLICKO http://www.blanet.cz/cz/doc-rndr-antonin-mrkos-csc-/144/ . Antonin Mrkos became the director of the Klet Observatory in České Budějovice in 1965, the telescope was a 0.57m / F5.2 telescope with which observations were made until 2002, when the KLENOT telescope was added, source Wikipedia https://en.wikipedia.org/ wiki / Kleť_Observatory . The comet already had a highly concentrated coma (star-shaped) when it was discovered, source GARY W. KRONK'S COMETOGRAPHY http://cometography.com/pcomets/124p.html . When photographing the comet was 0.785au away, the closest it was 2 days later 0.765 au on March 16, 2019. 1Picture. Average stack by comet. No coma or tail was observed.
2Picture The sum of the stack according to the stars, fast movement is shown. No asteroids less than 24.0 mag in the picture.
3Picture. first image measured, 2020-03-14T 20: 03: 33UT 2458923.33579JDUT 10h33m40.11s + 33d58'03.2 "N17.08mag Std Dev 303.875, JPL Horizon 20: 03: 33UT 10h33m40.20s + 33d58'03.7" T16.82mag.
4Picture. last image measured, 2020-03-14T 20: 22: 20UT 2458923.34884JDUT 10h33m38.53s + 33d57'38.8 "N17.048mag Std Dev 157.643, JPL Horizon 20: 22: 20UT 10h33m38.53s + 33d57'39.4" T16.82mag. TYC 2514-1143-1 v.11.45mag stars used to calibrate the brightness measurement.



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Additional information
  • Observation target
    • Comet
  • Name of the observation target
    • 124P/Mrkos
    • Heikosti näkyvä
  • Title for the comet
    • Telescopic comet
Technical information

Alluna RC16, C415 / 3320, SBIG 1001E, filter L, 10 x 120s

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