Contact information

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

Ursa Astronomical Association

(15198) 1940 GJ - 28.9.2019 at 01.29 - 28.9.2019 at 01.48 Orimattila, Artjärvi, Tähtikallio Observation number 85991

Visibility III / V


(15198) 1940 GJ (1940 GJ, 2000 DL) The asteroid on the inner edge of the main zone was photographed on the first night of the September 2019 Extraordinary Talks (storm bongar event). Finland 183. The asteroid of the Phocaea family was discovered by Liisi Oterma on April 5, 1940 in Iso-Heikkilä, Turku, and left it unnamed. The asteroid was found on 1940 04 05.00 13h44.8m + 05d19m 15.6mag (062-Turku). The size of the asteroid is 4.25km. 1Picture. first image measured, 2019-09-27T 22: 29: 26UT 2458754.43710JDUT 01h49m57.64s -04d28'31.2 "16.5mag Std Dev 262.027, JPL Horizon 22: 29: 26UT 01h49m57.74s -04d28'30.9" 16.93mag.
2Picture. last image measured, 2019-09-28T 22: 48: 12UT 2458754.45013JDUT 01h49m56.67s -04d28'29.9 "16.6mag Std Dev 263.331, JPL Horizon 22: 48: 12UT 01h49m56.75s -04d28'29.7" 16.93mag.
3Picture. sum view of the stack, motion is shown. No other asteroids below 20mag in the picture. USNO-A 01h50m01s -04d31'04 "B13.4 R13.1 stars used to calibrate brightness measurement.
#Suomi100asteroidit


Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • (15198) 1940 GJ
    • Keskitaso
  • Seeing
    • Average
Technical information

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

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