Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

(177614) 2004 HK33 - 18.11.2022 at 23.07 - 18.11.2022 at 23.18 Orimattila, Artjärvi, Tähtikallio Observation number 111194

Visibility III / V

Kari Laihia, Toni Veikkolainen, Juha Blad, Porin Karhunvartijat

(177614) 2004 HK33 (2004 HK33) The Apollo NEO/PHA asteroid imaged on the first night of the 2022 November talcos. The asteroid was discovered by the Linear Socorro Discovery Program (704 – Lincoln Laboratory ETS, New Mexico) on April 21, 2004. The entire estimate for the asteroid is 1.1km. At the time of imaging, the asteroid was at a distance of 0.3466au and at its closest on October 8, 2022 at 0.10255au.

1Fig. first image of the series L60s measured, 2022-11-18T 21:07:23UT 2459902.38012JDUT 02h16m36.58s -04d16'13.9" 16.976mag Std Dev 109.610 SNR21.774 FWHM3.518" ,JPL Horizon 21:07:26m -04d16m36.58s -04d16'13.9" 04d16'15.6" 16.963mag .

2Fig. last image of series L60s measured, 2022-11-18T 21:18:06UT 2459902.38756JDUT 02h16m36.66s -04d15'59.0" 16.816mag Std Dev 127.255 SNR25.131 FWHM3.838" , JPL Horizon 21:12.06m -07h16m36.66s -04d15'59.0" 04d15'59.7" 16.963mag .

3Fig. sum picture L60s 1-11 from a stack of pictures, fast movement is visible. Asteroid (5001) EMP 15.989mag, motion visible. Asteroid (130057) 1999 VA179 19.029mag, motion visible .Asteroid (154006) Suzannehawley 20.099mag, motion not visible ?

Figure 4. as reference image Simbad DSS image , (154006) Suzannehawley assumed location . No other asteroids below 22.8mag.

TYC 4623-767-1 v.11.89mag star used for brightness measurement calibration.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • (177614) 2004 HK33
  • Seeing
    • Good
Technical information

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

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