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Note number : 0091 P/Kowal 1 : 99P

• 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 562 observations 1977 April 24 to 2010 July 13. Perturbations by all nine planets were taken into account, and relativity effect of the sun.

The mean residual is 0.45 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2007 January 15 at 0h TT, julian day 2454115.5.

Perihelion passage (T)	2007 January 15.68521 TT	±0.00000 TT
Argument of perihelion (ω)	172.8213637°	±0.0000683°
>Longitude of the node (Ω)	28.4018844°	۪.0000714°
Inclinaison (i)	4.3452821°	±0.0000062°
Perihelion distance (q)	4.7183028 ua	±0.0000004 ua
Eccentricity (e)	0.2271776	±0.0000004
Semimajor axis (a)	6.1052871 ua	±0.0000037 ua
Mean motion (n)	0.06533486°/jour	±0.00000006°/jour
Period (P)	15.086 years	±0.0000136 (0.0050 day)

Formulæ for magnitudes

Total magnitude :
m₁ = H₁ + 5log(Δ) + 10 log(r) avec H₁ = 8.35± 0.04 calculé à l'aide de 292 observation(s).
Nuclear magnitude :
m₂ = H₂ + 5log(Δ) + 5 log(r) avec H₂ = 11.38±0.05 calculé à l'aide de 149 observation(s).

Elements for the next transit through perihelion

Epoch :2022 February 12 at 0h TT, julian day 2459622.5 TT.

T =2022 April 12.71148 TT.
q :4.7060976 ua	(J2000)	P	Q
n : 0.06531386°/jour	ω : 174.9402527°	-0.92009834	+0.39006241
a : 6.1065952 ua	Ω : 28.1018561°	-0.36196854	-0.81199070
e : 0.2293418	i : 4.3395237°	-0.14965899	-0.43419169
P =15.09 years

Elements for the previous transit(s) through perihelion

Epoch :1992 March 13 at 0h TT, julian day 2448694.5 TT.

T =1992 March 13.95464 TT.
q :4.6722649 ua	(J2000)	P	Q
n : 0.06562975°/jour	ω : 174.7893619°	-0.91648070	+0.39837683
a : 6.0869848 ua	Ω : 28.7753557°	-0.36977629	-0.80828362
e : 0.2324172	i : 4.3921497°	-0.15273709	-0.43355911
P =15.02 years

Epoch :1977 January 1 at 0h TT, julian day 2443144.5 TT.

T =1977 January 1.73121 TT.
q :4.6593934 ua	(J2000)	P	Q
n : 0.06555222°/jour	ω : 172.4471829°	-0.92981837	+0.36612400
a : 6.0917834 ua	Ω : 29.1169855°	-0.34153149	-0.82070268
e : 0.2351348	i : 4.3958955°	-0.13709135	-0.43863462
P =15.04 years

Contact

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

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