Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

2004 UE - 6.11.2021 at 21.17 - 6.11.2021 at 21.38 Orimattila, Artjärvi, Tähtikallio Observation number 102148

Visibility II / V

The asteroid Apollo NEO / PHA was photographed on the second night of November. The asteroid was discovered on 16 November 2004 in the Linear exploration program, the first sighting was made on 12 September (645) in the Apache Point-Sloan Digital Sky Survey. Size estimate 170-380m rotation speed 5.6h and 1mag brightness difference, suggests an elongated shape? The Goldstone Radar Observatory intends to photograph the 2004 EU and also the second one we photographed 3361 Orpheus Apollo 11.11.2021! In Finland, this destination is no longer noticeable, it is on its way south at a rapid pace. When photographed, the asteroid was 0.05725au away and the nearest 13.11.2021 0.02854au. We also photographed the second series with 60s exposure but due to varying weather and cloud cover it could not be used for observation.

1Picture. first image in the series1 L120s measured, 2021-11-06UT 19: 17: 08UT 2459525.30356JDUT 23h44m35.48s + 14d54'03.7 "17.115mag Std Dev 103.247 SNR11.541 FWHM4.066", JPL Horizon 19: 17: 08UT 23h44m35.41s + 14d54'06.0 "16,904 mag.

2Picture. last image in the series11 L120s measured, 2021-11-06UT 19: 37: 28UT 2459525.31768JDUT 23h44m36.69s + 14d50'30.2 "17.259mag Std Dev 90.499 SNR11.011 FWHM6.039", JPL Horizon 19: 37: 28UT 23h44m36.65s + 14d50'52.7 "16,904 mag.

3Picture summary image of the L120s 1-11 stack of images, fast motion is displayed. Asteroid (336467) 2008 VG7 19.5mag, motion shown. No other asteroids below 20.9mag are shown. TYC 1176-7-1 v. 11.82mag stars used to calibrate brightness measurement.

Additional information
  • Observation target
    • Asteroid
  • Name of the observation target
    • 2004 UE
  • Seeing
    • Average
Technical information

Alluna RC16, C415 / 3320, Moravian G4-16000EC MkII, filter L, bin3 11 x 120s

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