Contact information

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

Ursa Astronomical Association

(41855) 2000 WV89 - 18.11.2017 at 03.38 - 18.11.2017 at 03.57 Orimattila, Artjärvi, Tähtikallio Observation number 69115

Visibility I / V


41855 (2000 WV89, 1998 HF97) Filmed on the first night of the November work. The asteroid in the main zone was discovered on November 21, 2000 by Socorro LINEAR. Visit a large 300km asteroid near 15 Eunom at 0.02-0.04au every 50 years, is it a detached piece? 1Picture. first picture, measured 01: 37: 49UT 08h15m14.04s + 24d19'59.03 19.34mag, Horizon 21: 38UT 08h15m14.02s + 24d19'59.95 "19.36mag.
2Picture. last picture, measured 01.56: 45UT 08h15m14.36s + 24d20'00.8 "19.68mag, Horizon 01: 57UT 08h15m14.38s + 24d20'00.6" 19.68mag, Horizon 08h15m14.38s + 24d20'00.6 "19.36mag. Used as calibration star TYC 1928-437-1 v.11.49mag.
Summary image of the stack showing possible movements http://www.taivaanvahti.fi/images/uploads/201712/68593_16bf98f2acf60c66a9c6102ae127804a.jpg , and annotation of all asteroids in the image.


Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • (41855) 2000 WV89
    • Erittäin heikosti näkyvä
  • Seeing
    • Excellent
Technical information

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

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