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

Ursa Astronomical Association

1355 Magoeba - 4.9.2021 at 21.13 - 4.9.2021 at 21.24 Orimattila, Artjärvi, Tähtikallio Observation number 101399

Visibility I / V


1355 Magoeba (1935 HE) The asteroid at the inner edge of the main zone was photographed on the second night of the September 2021 work. The Hungaria family of asteroids was discovered by South African astronomer Cyril Jackson at the Johannesburg Observatory (078) on April 30, 1935. The asteroid is named after Magoeba (chief), tribal chief of Transvaal Province, South Africa. The size of the asteroid is 4.27km and the rotation speed is 5.9466h / r. Spectrum class spec_T => X. When photographing, the asteroid was at a distance of 1,290au and the closest on June 22, 2021 was 0.923au .We photographed this asteroid during a still enjoyable twilight.
1Picture. the first stack in the series of images 1-2 L30s measured, 2021-09-04UT 18: 12: 56UT 2459462.25898JDUT 18h13m13.40s + 10d22'37.9 "16.818mag Std Dev 291.392 SNR2.005 FWHM2.712", JPL Horizon 18: 12: 56UT 18h13m13.38s + 10d22'38.1 "16.226mag.
2Picture. last image in the series20 L30s measured, 2021-09-04UT 18: 24: 12UT 2459462.26680JDUT 18h13m13.76s + 10d22'32.9 "16.739mag Std Dev 146.899 SNR5.592 FWHM3.232", JPL Horizon 18: 24: 12UT 18h13m13.77s + 10d22'32.7 "16.226mag.
3Picture sum view of L30s 1-20 stack of images, motion shown. No other asteroids under 19.5mag are shown. TYC 1013-748-1 v. 12.53mag stars used to calibrate the brightness measurement.


Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 1355 Magoeba
  • Seeing
    • Mediocre
Technical information

Alluna RC16, C415 / 3320, Moravian G4-16000EC MkII, filter L, bin3 20 x 30s

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