Telescopic comet ATLAS, Orimattila, Artjärvi, Tähtikallio

C/2022 L2 (ATLAS) The hyperbolic comet was imaged on the first night of the 2023 May talcos. ATLAS Mauna Loa (T08 – ATLAS-MLO, Mauna Loa) discovered the Oort cloud comet on June 10, 2022 as a 18.4 mag target. The perihelion comet will arrive on March 12, 2024 at 2.69au. When photographing, the comet was 3.3178au in Hercules and at its closest on April 5, 2024 at a distance of 1.81 AU, estimated at T9.5 mag.

1Fig. stacked 1-20 images L30s sum image according to stars, movement is not visible. There are no asteroids below 21.1 mag in the picture.

2Fig. first image measured, 2023-05-19T 21:20:49UT 2460084.38945JDUT 17h43m31.90s +22d51'29.9" N16.566mag Std Dev 112.856 SNR5.439 FWHM5.203" ,JPL Horizon 21:20:49UT 17h 43m32.06s +22d51 '30.0" T16.082mag .

3Fig. last image measured, 2023-05-19T 21:31:44UT 2460084.39703JDUT 17h43m31.15s +22d51'31.4" N16.656mag Std Dev 106.362 SNR4.514 FWHM6.082" ,JPL Horizon 21:31:44UT 17h 43m31.29s +22d51 '31.1" T16.082mag .

TYC 2077-1618-1 12.27 mag star used for brightness measurement calibration.

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Telescopic comet ATLAS - 20.5.2023 at 00.21 - 20.5.2023 at 00.32 Orimattila, Artjärvi, Tähtikallio Observation number 116559