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Ursa Astronomical Association
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00130 Helsinki

Ursa Astronomical Association

385 Ilmatar - 25.9.2017 at 01.40 - 25.9.2017 at 01.59 Orimattila, Artjärvi, Tähtikallio Observation number 67535

Visibility IV / V

385 Ilmatar (1894 AX, 1942 FQ, 1953 TQ, 1987 QG3, A918 CC) Filmed on a DS weekend Sunday. The outer edge of the main zone asteroid 385 Ilmatar, discovered by Maximilian Franz Joseph Cornelius Wolf (Max Wolf) at the Heidelberg-Königstuhl Observatory on March 1, 1894. The size of the asteroid is 85.8km and the rotation time is 62.36h / r, spectral class S. named asteroid. 1Picture. the total image does not show movement.
2Picture. first image, measured 22: 40: 05UT 04h28m21.4s + 36d02'16.7 "12.7mag, Horizon 22: 40UT 04h28m21.4s + 37d02'15.7" 12.8mag.
3Picture. last image, measured 22: 59: 00UT 04h28m21.61s + 36d02'21.8 "12.7mag., Horizon 22: 59UT 04h28m21.63s + 37d02'20.9" 12.8mag. The stars TYC 2384-731-1 v.12.65mag were used for calibration.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 385 Ilmatar
    • Näyttävä
  • Seeing
    • Good
Technical information

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

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