2005 NZ6＜地球接近小惑星242643番＞
2013/05/01T21:16:59.06〜21:37:33.99までの60秒間露光20枚を合成
露光時間：60秒*20=20分
ε160/530mm + LPS-P2 + 60D/ISO800 / EM200Temma2
StellaImage4で合成、レベル補正とリサイズ
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＊ (242643) 2005 NZ6 が2013年04月29日に地球に最接近！ ＊
(242643) 2005 NZ6 was discovered by the NEAT Survey (Palomar Mountain) on July 3, 2005. Its physical characteristics are effectivley unknown except for its absolute magnitude of 17.6, which suggests a diameter within a factor of two of about 950 meters. This asteroid has a very eccentric orbit (e = 0.865) and it makes regular approaches within 0.1 AU of all four terrestrial planets. This asteroid will approach within 0.064 AU (24.9 lunar distances) on April 29, its closest distance to Earth for this century. It should be a moderately strong radar target at Goldstone and an outstanding target at Arecibo, where it should be imaged at 7.5 m resolution. We have three tracks scheduled at Goldstone on Apr. 26, 27, and 28. Six tracks are scheduled at Arecibo between Apr. 26-May 1. 2005 NZ6 has been classified as a "Potentially Hazardous Asteroid" (PHA) by the IAU's Minor Planet Center. Orbital and Physical Characteristics orbit type Apollo semimajor axis 1.834 AU eccentricity 0.865 inclination 8.5 deg perihelion distance 0.248 AU aphelion distance 3.419 AU absolute magnitude (H) 17.6 diameter 950 m +- a factor of two rotation period unknown pole direction unknown lightcurve amplitude unknown spectral class unknown Last update: 2013 Apr 23 |
2013年05月01日 14.03等
