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Ursa Astronomical Association
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Ursa Astronomical Association

6164 Gerhardmuller - 4.12.2021 at 20.45 - 4.12.2021 at 20.58 Orimattila, Artjärvi, Tähtikallio Observation number 103234

Visibility II / V

6164 Gerhardmuller (1930 UB1.1977 RF2.1987 OB) The asteroid on the inner edge of the main zone was photographed on the second night of the December work. When photographing NGC 772, the Aegular peculiar spiral galaxy, this came into the picture. The asteroid of the Flora family was discovered by the Soviet Ukrainian astronomer Nikolai Stepanovich at the Nauchi Observatory in Chernykh Crimea on September 9, 1977. Chernykh has found comets 74P / Smirnova Chernykh and 101P / Chernykh and a total of 537 asteroids. The asteroid is named after Gerhard Friedrich Müller (1705-1783), the first rector of the University of St. Petersburg (Fyodor Ivanovit Miller). The German student Müller was invited to St. Petersburg, Russia in 1725, at the age of about 20? He was appointed professor at the age of 25 in 1730. In Russia he pursued an extensive scientific career. Source Wikipediaüller . The size of the asteroid is 4.91km. During shooting, the weather deteriorated, with only 7 images from the series coming into use.

1Picture. first image in the series1 L120s measured, 2021-12-04UT 18: 44: 55UT 2459553.28119JDUT 01h58m40.50s + 19d10'20.4 "17.053mag Std Dev 109.799 SNR17.269 FWHM4.159", JPL Horizon 18: 44: 55UT 01h58m40.48s + 19d10'20.0 "16.908mag.

2Picture. stack of L120s in the last 6-7 images measured, 2021-12-04UT 18: 55: 21UT 2459553.28843JDUT 01h58m40.33s + 19d10'19.1 "16.791mag Std Dev 75.350 SNR7.454 FWHM-", JPL Horizon 18: 55: 21UT 01h58m40. 33s + 19d10'18.8 "16,908 mag.

3Picture summary image of the L120s stack of images 1-7, motion is not displayed. Asteroid (130683) 2000 SV123 18.693mag, motion not shown. No other asteroids under 19.6 mag are shown. TYC 1210-446-1 v. 11.93mag stars used to calibrate brightness measurement.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 6164 Gerhardmuller
  • Seeing
    • Average
Technical information

Alluna RC16, C415 / 3320, Moravian G4-16000EC MkII, filter L, bin3 11 x 120s

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