Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

(313607) 2003 QL30 - 18.11.2022 at 22.53 - 18.11.2022 at 23.05 Orimattila, Artjärvi, Tähtikallio Observation number 111247

Visibility I / V

(313607) 2003 QL30 (2003 QL30) The Mars-Crossing asteroid was imaged on the first night of the 2022 November talcos. The asteroid was discovered by Australian amateur astronomer John Broughton (b.1952), at the Reedy Creek Observatory (428 – Reedy Creek) on August 24, 2004. John Broughton is one of the amateurs who discovered the most asteroids in the world. He has also developed telescopes suitable for search and the search methods that support them. He has found a total of 1180 asteroids and comets P/2005 T5 (Broughton), C/2006 OF2 (Broughton). Source Wikipedia . John Broughton's own observatory is located at Reedy Creek, a suburb of the Gold Coast in eastern Queensland, Source Wikipedia,_Queensland . The estimated size of the asteroid is 1.2 km. No other information can be found besides track information. At the time of imaging, the asteroid was at a distance of 0.4971au and at its closest on October 31, 2022 at 0.46846au.

1Fig. first image of the series L60s measured, 2022-11-18T 20:53:40UT 2459902.37060JDUT 03h00m45.19s +10d15'03.8" 16.495mag Std Dev 160.933 SNR23.781 FWHM2.977" ,JPL Horizon 20:53.40m20m +20d15'03.8" 10d15'03.4" 16.913mag .

2Fig. last image in series L60s measured, 2022-11-18T 21:04:22UT 2459902.37803JDUT 03h00m44.94s +10d15'10.1" 16.618mag Std Dev 136.080 SNR23.063 FWHM3.264" , JPL Horizon 21:04.264m44.94s +10d15'10.1" 10d15'09.7" 16.913mag .

3Fig. sum picture L60s 1-11 from a stack of pictures, movement is visible. Asteroid (151320) 2002 CQ131 19.457mag, motion visible. Asteroid (123840) 2001 CF22 19.443mag, motion visible. Asteroid (199468) 2006 DF60 19.718mag, motion visible. Asteroid (312924) 2011 WN35, no motion seen. Bright star next to asteroid HD 18718 7.67mag. No other asteroids below 20.1mag.

TYC 644-242-1 v.11.07mag star used for brightness measurement calibration.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • (313607) 2003 QL30
  • Seeing
    • Good
Technical information

Alluna RC16, C415/3320, Moravian G4-16000EC MkII, filter L, bin3 11 x 60s

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