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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

(44264) 1998 QH54 - 14.8.2022 at 00.26 - 14.8.2022 at 00.47 Orimattila, Artjärvi, Tähtikallio Observation number 109645

Visibility II / V

Kari Laihia, Toni Veikkolainen, Jani Katava, Porin Karhunvartijat

(44264) Asteroid 1998 QH54 (1998 QH54,2001 AK39) was imaged on the second night of the 2022 August talcos. When photographing the planetary nebula NGC 6852, this came into the picture. A mid-main belt asteroid was discovered by the Loneos exploration program at Lowel Observatory's Anderson Mesa station (699) on August 27, 1998. The size of the asteroid is 3.64 km. There is nothing more to be found about this ordinary asteroid than the orbital data. When photographing, the asteroid was at a distance of 1.4245au and at its closest on July 21, 2022 at 1.373au.

1Fig. first image of the series L120s measured, 2022-08-13T 21:26:05UT 2459805.39311JDUT 20h01m16.69s +01d53'25.2" 18.140mag Std Dev 126.992 SNR5.906 FWHM2.881" ,JPL Horizon 21:26.03mUT +01d53'25.2m 176.992 01d53'25.1" 17.689mag .

2Fig. last image of the series L120s measured, 2022-08-13T 21:46:53UT 2459805.40755JDUT 20h01m16.15s +01d53'17.0" 18.254mag Std Dev 163.689 SNR4.283 FWHM3.161" ,JPL Horizon 21:46.51m16.17s +01d53'17.0" 01d53'17.6" 17.689mag .

3 Picture sum picture L120s 1-11 from a stack of pictures, movement is visible. Asteroid (105086) 2000 KR78 18.273mag, motion visible. Planetary nebula NGC 6852 12.6mag. . There are no others under 19.6 mag in the picture. asteroids.

TYC 494-1895-1 v.12.20mag star used for brightness measurement calibration.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • (44264) 1998 QH54
  • Seeing
    • Good
Technical information

Alluna RC16, C415/3320, Moravian G4-16000EC MkII, filter L, bin3 11 x 120s

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