Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

1450 Raimonda - 18.11.2017 at 02.06 - 18.11.2017 at 02.24 Orimattila, Artjärvi, Tähtikallio Observation number 68486

Visibility I / V

1450 Raimonda (1938 DP, 1934 GJ, A915 TF) Filmed on the first night of the November work. Finland 100 target of our project 33. Yrjö Väisälä discovered an asteroid in the central zone of the main zone on February 20, 1938 in Iso-Heikkilä, Turku. The asteroid is named after the German astronomer Jean Jacques Raimond, Jr. He was the director of the planetarium founded in The Hague in the Netherlands in 1934 (the first planetarium outside Germany) and a popularizer of science in the Netherlands. He also published the popular astromic almanac ‘Sterrengids’, 1938-1961. His name is crater Raimond Kuussak. The size of the asteroid is 18.48km and the rotation speed is 12.66h / r. A 3D model of the asteroid can be found at .During the 20min description, the asteroid moved mainly in front of the star. Keli was challenging because of the clouds during the filming. The first image to be measured was 6 images and only astrometry was obtained from the last. 1Picture. series 6 picture, measured 00: 16: 20UT 08h39m5.18s + 21d22'36.5 "16.0mag, Horizon 00: 16UT 08h39m5.03s + 21d22'34.6" 16.23mag.
2Picture. last picture, measured 00: 24: 04UT 08h39m5.38s + 21d22'35.2 ", Horizon 00: 24UT 08h39m05.30s + 21d22'34.7" 16.23mag.
3Picture summary of the series shows the movement when looking closely :).
Brightness calibration used for TYC 1398-2419-1 v.11.14mag stars. The star behind the asteroid and disturbed is USNO-A 08h40m08s + 21d18'48 "R.13.2mag B.13.8mag.


Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 1450 Raimonda
    • Erittäin heikosti näkyvä
  • Seeing
    • Mediocre
Technical information

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

Comments: 1 pcs
Veikko Mäkelä - 4.5.2018 at 14.25 Report this

Raimonda taitaa kuulua samaan feminisoitujen nimien kategoriaan kuin Sundmania ja Donnera.

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