Skywarden

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

Kari Laihia, Hannu Määttänen, Christos Oscar Kambiselis, Porin Karhunvartijat

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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