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(Spitzer two-band thermal model)〔 | mass = ~ 1.2 kg (assumed)〔 | sidereal_day = 0.504 d (12.101 h)〔 | spectral_type = (Neutral) B–V=0.66, V–R=0.36〔 B0–V0=0.869〔 | magnitude = 19.4 〔 | abs_magnitude = 3.2 〔 | albedo = 〔 | single_temperature = < 41 K }} (55636) is a bright Kuiper belt object in the outer Solar System estimated to be about in diameter.〔 It is a large member of the Haumea family that was discovered on October 15, 2002 by the Near-Earth Asteroid Tracking (NEAT) program.〔 A classical Kuiper belt object with the absolute magnitude between that of 50000 Quaoar and 20000 Varuna, has the most eccentric and inclined orbit of the three. A variability of the visual brightness was also detected which could fit to 7.9 h or 15.8 h rotational period (the distinction between single or double-peaked curved could not be made with confidence). The changes in brightness are quite close to the error margin and could also be due to an ''irregular shape''.〔 == Orbit == The diagrams to the left show polar and ecliptic views of the orbits of the two cubewanos. The perihelia (q) and the aphelia (Q) are marked with the dates of passage. The present positions (as of April 2006) are marked with the spheres, illustrating relative sizes and differences in albedo (both objects appear neutral in the visible spectrum). is classified as a classical Kuiper belt object and follows an orbit very similar to that of : highly inclined (26°) and moderately eccentric (e ~0.12), far from Neptune’s perturbations (perihelion at ~37 AU). Other mid-sizes cubewanos follow similar orbits as well, notably and . It has been observed 303 times, with precovery images back to 1954.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「(55636) 2002 TX300」の詳細全文を読む スポンサード リンク
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