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

Ursa Astronomical Association

10109 Sidhu - 23.4.2022 at 23.14 - 23.4.2022 at 23.36 Orimattila, Artjärvi, Tähtikallio Observation number 106896

Visibility II / V

Kari Laihia, Veikko Mäkelä, Toni Veikkolainen, Rauno Päivinen, Christos Oscar Kambiselis, Olli-Pekka Joronen, Porin Karhunvartijat

10109 Sidhu (1992 KQ, 1987 HN) The asteroid in the central zone of the main zone was photographed on the second night of the April 2022 work. The asteroid of the Eunomia family was discovered by Eleanor Francis "Glo" at the Helin Palomar Observatory (code 675) on May 29, 1992. The asteroid is named after the Indian-Canadian amateur astronomer Askarn Singh "Sid" Sidhu. He joined the Royal Astronomical Society of Canada at the Victoria Center in 1985 and has been a mentor to new members. Sidhu coordinates the borrowing of telescopes owned by the center and the club’s school program. News of the naming of an asteroid after his name. Source The Bear Rocks https://www.iheartradio.ca/100-3-the-bear/news/it-changed-me-bc-amateur-astronomer-honoured-with-asteroid-name-1.17330002 . The size of the asteroid is 9.49km. The spectral class according to the family S. At the time of filming, the asteroid was at a distance of 1,769au and the closest on April 17, 2022 to 1,763au. When shooting, the weather improved.

1Picture. first image in the series1 L120s measured, 2022-04-23T 20: 14: 38UT 2459693.34349JDUT 13h30m36.38s + 15d03'06.0 "16.574mag Std Dev 76.962 SNR7.831 FWHM3.690", JPL Horizon 20: 14: 38UT 13h30m36.41s + 15d03'05.6 "16.733 mag.

2Picture. the last image in the series11 L120s measured, 2022-04-23T 20: 35: 31UT 2459693.35799JDUT 13h30m35.64s + 15d03'07.5 "16.560mag Std Dev 354.735 SNR73.349 FWHM3.734", JPL Horizon 20: 35: 31UT 13h30m35.64s + 15d03'07.3 "16.733 mag.

3Picture sum view of L120s 1-11 stack of images, motion is displayed. No other asteroids below 21.3 mag are shown. TYC 1458-1330-1 v.12.10mag stars used to calibrate brightness measurement.


Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 10109 Sidhu
  • Seeing
    • Average
Technical information

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

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