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Ursa Astronomical Association
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Ursa Astronomical Association

90471 Andrewdrake - 24.4.2022 at 00.26 - 24.4.2022 at 00.47 Orimattila, Artjärvi, Tähtikallio Observation number 107111

Visibility I / V

90471 Andrewdrake (2001 KV49,2004 CF98) The asteroid on the inner edge of the main zone was photographed on the second night of the April 2022 work. When we photographed the NEO asteroid 2021 VM25, this also came into the picture. The asteroid was discovered by the Catalina Sky Survey (703-Catalina Sky Survey) at the Catalina Observatory on February 14, 2004. The asteroid was named after Dr. Andrew J. Drake (b. 1969) from Australia. Center for Advanced Computing Research (Caltech, USA) Size 1.9km. There is no data on the asteroid in addition to the orbital data. When photographed, the asteroid was at a distance of 1.0526au and the nearest April 3, 2022 to 1.006au. During shooting, the weather changed due to clouds and the first and last images were not measurable.

1Picture. first image in the series2 L120s measured, 2022-04-23T 21: 26: 37UT 2459693.39348JDUT 12h33m54.14s + 04d53'24.2 "19.109mag Std Dev 39.544 SNR4.813 FWHM3.909", JPL Horizon 21: 26: 37UT 12h33m54.11s + 04d53'23.2 "18.437 mag.

2Picture. last image in the series19 L120s measured, 2022-04-23T 21: 45: 07UT 2459693.40633JDUT 12h33m53.58s + 04d53'22.0 "18.829mag Std Dev 47.802 SNR8.204 FWHM3.272", JPL Horizon 21: 45: 07UT 12h33m53.57s + 04d53'21.9 "18.437 mag.

3Picture sum view of L120s 1-20 images stack, motion is displayed.Asteroid 2021 VM25 T16.803mag, fast motion is displayed. Asteroid (83431) 2001 SR47 19,304, motion shown. Asteroid (167433) 2003 WW169 20.069mag, motion shown. No other asteroids less than 20.8mag in the image.

TYC 292-201-1 12.60mag stars used to calibrate brightness measurement.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 90471 Andrewdrake
  • Seeing
    • Average
Technical information

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

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