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Note number : 0085 P/Arend-Rigaux : 49P

• Introduction
• Elements
• Formulæ for magnitudes
• Elements for the next transit through perihelion
• Elements for the previous transit(s) through perihelion

• Comparison with observations
• Ephemerides of the comet  (ou click to open TEXT file TEXTE)
• Load the Postscript file of the note

Introduction

The following improved orbital elements, are from 2791 observations 1997 June 28 to 2013 May 5, including full planetary and non-gravitational effect of type II, and relativity effect of the sun.

The mean residual is 0.41 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2011 October 19 at 0h TT, julian day 2455853.5.

Perihelion passage (T)	2011 October 19.07861 TT	±0.00000 TT
Argument of perihelion (ω)	332.7902900°	±0.0000135°
>Longitude of the node (Ω)	118.8764409°	۪.0000157°
Inclinaison (i)	19.0502813°	±0.0000045°
Perihelion distance (q)	1.4238311 ua	±0.0000001 ua
Eccentricity (e)	0.6003479	±0.0000003
Semimajor axis (a)	3.5626759 ua	±0.0000026 ua
Mean motion (n)	0.14656814°/jour	±0.00000016°/jour
Period (P)	6.725 years	±0.0000072 (0.0026 day)

Non-gravitational parameters :

A₁ = -0.04212 .10^-8 ±0.00271 .10^-8
A₂ = -0.00312 .10^-8 ±0.00012 .10^-8
A₃ = 0.01128 .10^-8 ±0.00133 .10^-8

Formulæ for magnitudes

Total magnitude :
m₁ = H₁ + 5log(Δ) + 10 log(r) avec H₁ = 12.87± 0.02 calculé à l'aide de 355 observation(s).
Nuclear magnitude :
m₂ = H₂ + 5log(Δ) + 5 log(r) avec H₂ = 14.52±0.01 calculé à l'aide de 1765 observation(s).

Elements for the next transit through perihelion

Epoch :2018 July 15 at 0h TT, julian day 2458314.5 TT.

T =2018 July 15.49451 TT.
q :1.4296075 ua	(J2000)	P	Q
n : 0.14618107°/jour	ω : 332.8884053°	-0.05173619	-0.95687523
a : 3.5689623 ua	Ω : 118.8241805°	+0.96518720	-0.12139767
e : 0.5994333	i : 19.0431518°	+0.25639234	+0.26391740
P =6.74 years

Elements for the previous transit(s) through perihelion

Epoch :2005 February 24 at 0h TT, julian day 2453425.5 TT.

T =2005 February 24.55794 TT.
q :1.3685545 ua	(J2000)	P	Q
n : 0.14901833°/jour	ω : 330.7018224°	-0.06206837	-0.96160503
a : 3.5235160 ua	Ω : 121.6477024°	+0.96592039	-0.12530964
e : 0.6115941	i : 18.3019429°	+0.25128733	+0.24415826
P =6.61 years

Epoch :1998 July 12 at 0h TT, julian day 2451006.5 TT.

T =1998 July 12.59135 TT.
q :1.3685941 ua	(J2000)	P	Q
n : 0.14904018°/jour	ω : 330.5616078°	-0.06108464	-0.96177766
a : 3.5231717 ua	Ω : 121.7288032°	+0.96612350	-0.12415512
e : 0.6115449	i : 18.2905032°	+0.25074699	+0.24406809
P =6.61 years

Contact

Send your suggestion to the author of the notes : Patrick Rocher

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