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Ursa Astronomical Association
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Ursa Astronomical Association

(162385) 2000 BM19 - 20.1.2023 at 22.02 - 20.1.2023 at 22.14 Orimattila, Artjärvi, Tähtikallio Observation number 111829

Visibility I / V

(162385) 2000 BM19 (2000 BM19) The Aten/NEO asteroid was imaged on the first night of the 2023 January talcos. The asteroid was discovered by the Linear Socorro Discovery Program (704 – Lincoln Laboratory ETS, New Mexico) on January 31, 2000. The asteroid has a size of 0.81 km and a rotation speed of 9.463 h/r. Spectral class spec_B=>O . The spectra of O type asteroids correspond to the spectra of L6 and LL6 chondrite meteorites, only 7 asteroids belong to the rare type. Source Wikipedia . (162385) 2000 BM19 asteroid is the only Ate type. When photographed, the asteroid was at a distance of 0.0901au and at its closest on January 13, 2023 at 0.08519au. The lights of a nearby cell phone base station mast caused strong artifacts in the pictures.

1Fig. first image of the series L30s measured, 2023-01-20T 20:02:01UT 2459965.33523JDUT 18h58m04.64s +63d12'52.1" 17.907mag Std Dev 50.977 SNR6.113 FWHM2.819" ,JPL Horizon 20:02:58m04.64s +04h 63d12'51.3" 16.499mag .

2Fig. last image of series L30s measured, 2023-01-20T 20:13:25UT 2459965.34265JDUT 18h58m11.24s +63d13'46.9" 17.662mag Std Dev 79.455 SNR4.532 FWHM2.960" , JPL Horizon 20:13:58m11.24s +18h01s 63d13'46.1" 16.499mag .

3Fig. sum picture L30s from a stack of 1-20 pictures, fast movement is weakly visible. There are no other asteroids below 20.4 mag in the picture.

TYC 4229-64-1 12.33mag star used for brightness measurement calibration.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • (162385) 2000 BM19
  • Seeing
    • Mediocre
Technical information

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

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