NASA網頁的完整資料:
http://ssd.jpl.nasa.gov/horizons.cgi#resultsJPL/HORIZONS Garradd (C/2009 P1) 2011-Nov-17 18:48:54
Rec #:903742 (+COV) Soln.date: 2011-Nov-07_15:50:13 # obs: 4720 (2009-2011)
FK5/J2000.0 helio. ecliptic osc. elements (AU, DAYS, DEG, period=Julian yrs):
EPOCH= 2455740.5 != 2011-Jun-28.0000000 (CT) Residual RMS= .42042
EC= 1.000976679939178 QR= 1.550605154698915 TP= 2455919.177329165
OM= 325.9973984067939 W= 90.74426738012214 IN= 106.1782188360693
A= -1587.628753800395 MA= 359.99721612268 ADIST= 9.999999E99
PER= 9.999999E99 N= 1.558E-5 ANGMOM= .030300728
DAN= 3.1436 DDN= 3.0629 L= 233.3279758
B= 73.8051274 TP= 2011-Dec-23.6773292
Physical & non-grav parameters (KM, SEC; A1,A2,A3=AU/d^2; DT=days):
GM= n.a. RAD= n.a. A1= n.a.
A2= n.a. A3= n.a. DT= n.a.
M1= 6.5 M2= 9.6 k1= 8.
k2= 5. PHCOF= .030
COMET comments
1: soln ref.= JPL#66, data arc: 2009-Aug-13 to 2011-Nov-06
2: k1=8., k2=5., phase coef.=0.03;