Contact information

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

Ursa Astronomical Association

4066 Haapavesi - 21.10.2017 at 19.35 - 21.10.2017 at 19.50 Orimattila, Artjärvi, Tähtikallio Observation number 68014

Visibility I / V


4066 Aspen Water (1940 RG, 1930 UC1,1987 QD7) Filmed on the second night of the October work. Finland 100 The target of our project 27. The asteroid of the Flora family was discovered by Heikki Alikoski on September 7, 1940 in Iso-Heikkilä, Turku. The name comes from Heikki Alikoski's father's birthplace in Haapavesi. The size of the asteroid at the inner edge of the main zone is 4.12km from the orbital time and no information was found on the spectral class.
1Picture. stacked according to the stars, the asteroid stands out poorly, had to search for MaximDL with the animation function where the motion was visible and the target was located for measurement.
2Picture. first image, measured 16: 35: 12UT 19h33m35.91s -15d37'21.0 "17.1mag, Horizon 16: 35UT 19h33m35.79s -15d37'22.3" 16.97mag.
3Picture. last picture, measured 16: 49: 52UT 19h33m37.25s -15d37'20.2 "17.2mag, Horizon 16: 50UT 19h33m37.11s -15d37'20.4" 16.97mag.
USNO-A 19h35m10s-15d32'41 "r.12.6mag stars used as calibration star. Moving clouds caused 3 images to be removed from the series due to poor quality.

#Suomi100asteroidit


Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 4066 Haapavesi
    • Erittäin heikosti näkyvä
  • Seeing
    • Average
Technical information

Alluna RC16, C415 / 3320, SBIG 1001E, filter L, 7 x 120s

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