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Ursa Astronomical Association
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00130 Helsinki

Ursa Astronomical Association

2022 HB - 23.4.2022 at 23.38 - 23.4.2022 at 23.59 Orimattila, Artjärvi, Tähtikallio Observation number 106867

Visibility IV / V

2022 HB (2022 HB) The Apollo NEO / PHA asteroid was photographed on the second night of the April 2022 work. The asteroid was discovered by the Asteroid Terrestrial- Impact Last Alert System "(ATLAS) search program at the ATLAS-HKO Observatory (T05 ATLAS-HKO, Haleakala) with a 50cm telescope on April 18, 2022. 4 days after its discovery is the closest observation we have made since the day of the discovery!

1Picture. first image in the series1 L60s measured, 2022-04-23T 20: 38: 53UT 2459693.36033JDUT 14h07m57.79s + 18d36'46.7 "16.642mag Std Dev 146.354 SNR21.227 FWHM4.934", JPL Horizon 20: 38: 53UT 14h07m57.78s + 18d36'46.2 "16.188 mag.

2Picture. last image in the series20 L60s measured, 2022-04-23T 20: 59: 41UT 2459693.37478JDUT 14h07m46.17s + 18d31'22.9 "16.674mag Std Dev 133.088 SNR31.580 FWHM8.500", JPL Horizon 20: 59: 41UT 14h07m46.13s + 18d31'21.0 "16.190 mag.

3Picture. sum view of L60s 1-20 stack of images, very fast motion is shown. No other asteroids below 20.5 mag are shown.

4Picture. Animation of the movement, the effect of the weather is also visible.

TYC 1471-666-1 v.11.86mag stars used to calibrate brightness measurement.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 2022 HB
  • Seeing
    • Good
Technical information

Alluna RC16, C415 / 3320, Moravian G4-16000EC MkII, filter L, bin3 20 x 60s

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