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Ursa Astronomical Association
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Ursa Astronomical Association

326 Tamara - 22.4.2022 at 22.13 - 22.4.2022 at 22.25 Orimattila, Artjärvi, Tähtikallio Observation number 106610

Visibility I / V

Kari Laihia, Veikko Mäkelä, Toni Veikkolainen, Rauno Päivinen, Christos Oscar Kambiselis, Juha Blad, Porin Karhunvartijat

326 Tamara (1899 OD, A892 FD, A899 OD) The asteroid on the inner edge of the main zone was photographed on the first night of the April 2022 work. The asteroid of the Tamara family of the Phokaea group was discovered at the Johann Palisa Wine Observatory on March 19, 1892. Source Wikipedia https://en.wikipedia.org/wiki/326_Tamara . The asteroid is named after Queen Tamar the Great of Georgia (c. 1160-1213). Tamar ruled during a very difficult time when he was conducting considerable military operations around his kingdom. Source Wikipedia https://en.wikipedia.org/wiki/Tamar_of_Georgia .The size of the large asteroid is 93km and the rotation speed is 14.445h / r. Spectrum class spec_T => C. When photographed, the asteroid was at a distance of 2.3758au and the closest January 28, 2022 to 1,800au.

1Picture. first image in the series1 L60s measured, 2022-04-22T 19: 13: 39UT 2459692.30114JDUT 08h30m44.55s + 43d22'43.9 "14.293mag Std Dev 1777.815 SNR47.692 FWHM3.040", JPL Horizon 19: 13: 39UT 08h30m44.47s + 43d22'43.6 "14.329 mag.

2Picture. last image in the series11 L60s measured, 2022-04-22T 19: 24: 33UT 2459692.30871JDUT 08h30m44.99s + 43d22'38.1 "14.363mag Std Dev 1766.203 SNR75.764 FWHM3.014", JPL Horizon 19: 24: 33UT 08h30m44.90s + 43d22'37.7 "14.329 mag.

3Picture sum view of L60s 1-11 image stack, motion is displayed. No other asteroids less than 22.4 magma are shown.

TYC 2981-627-1 used to calibrate brightness measurement

v.12.0mag stars.


Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 326 Tamara
  • Seeing
    • Mediocre
Technical information

Alluna RC16, C415 / 3320, Moravian G4-16000EC MkII, filter L, bin3 11 x 60s

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