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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

(496005) 2007 XJ16 - 24.9.2017 at 22.37 - 24.9.2017 at 22.56 Orimattila, Artjärvi, Tähtikallio Observation number 67545

Visibility II / V

496005 (2007 XJ16) Filmed on a DS weekend Sunday. The NEO, PHA, Amor type asteroid has first received the comet code A / 2007 XJ16 and the asteroid number appeared after our description! Found in Steward Observatory, Kitt Peak Spacewatch 0.9m reflector on December 5, 2007. The size is 477-1067m. The rapid movement of the asteroid caused difficulties in the measurement, due to the exposures being too long. An additional tripod for monitoring should have been used. 1Picture. It was necessary to stretch quite a bit so that the streak of movement was visible in the total image.
2Picture. the first image also shows motion during shooting, measured 19: 37: 01UT 18h17m25.98s + 22d21'43.7 "17.6mag, Horizon 19: 37UT 18h17m26.02s + 22d21'43.8" 16.75mag.
3Picture. last image, measured 19: 55: 57UT 18h17m32.39s + 22d23'13.2 "17.7mag., Horizon 19: 56UT 19h17m32.6s + 22d23'13.6" 16.75mag. The stars TYC 1580-330-1 v.12.75mag were used for calibration. Also pictured is the galaxy NGC 6616.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • (496005) 2007 XJ16
    • Heikosti näkyvä
  • Seeing
    • Good
Technical information

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

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