本帖最后由 andy2000a 于 2010-10-11 17:58 编辑
好像 是 軌道六要素
http://plain.isas.jaxa.jp/~ebisa ... 7Komaba/node46.html
http://zh.wikipedia.org/zh-tw/%E ... 3%E6%A0%B9%E6%95%B8
maybe can
http://activity.ntsec.gov.tw/act ... ior/0405/040505.pdf
and
McNaught彗星的尾巴和軌道 - McNaught 彗星的尾巴
http://www.alanchuhk.com/McNaught_Comet.doc
e (eccentricity偏心率) = 1.000301
i (inclination軌道斜角) = 77.827680
q (perihelion distance近日點距離) = 0.1707540 AU
TP (time of perihelion passage過近日點時刻) = 2007-01-12.80
(longitude of ascending node 升交點黃經) = 267.413470
(argument of perihelion近日點幅角)
公轉週期 (P)
平均近點角 (M)
近日點 (q)
遠日點 (Q)
http://www.stellarium.org/wiki/index.php/JPL_HORIZONS
EC Eccentricity, e
QR Periapsis distance, q (AU)
IN Inclination w.r.t xy-plane, i (degrees)
OM Longitude of Ascending Node, OMEGA, (degrees)
W Argument of Perifocus, w (degrees)
Tp Time of periapsis (Julian day number)
N Mean motion, n (degrees/day)
MA Mean anomaly, M (degrees)
TA True anomaly, nu (degrees)
A Semi-major axis, a (AU)
AD Apoapsis distance (AU)
PR Orbital period (day) |
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