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Note number : 0028 P/Honda-Mrkos-Pajdusakova : 45P

• 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 261 observations 1995 September 21 to 2006 June 6, including full planetary and non-gravitational effect of type II, but not the relativity effect of the Sun.

The mean residual is 0.61 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2006 June 29 at 0h TT, julian day 2453915.5.

Perihelion passage (T)	2006 June 29.80299 TT	±0.00000 TT
Argument of perihelion (ω)	326.1158106°	±0.0009495°
>Longitude of the node (Ω)	89.1114487°	۪.0010520°
Inclinaison (i)	4.2532666°	±0.0000717°
Perihelion distance (q)	0.5302496 ua	±0.0000011 ua
Eccentricity (e)	0.8245020	±0.0000083
Semimajor axis (a)	3.0213997 ua	±0.0001484 ua
Mean motion (n)	0.18766868°/jour	±0.00001383°/jour
Period (P)	5.252 years	±0.0003870 (0.1413 day)

Non-gravitational parameters :

A₁ = 0.31515 .10^-8 ±0.01581 .10^-8
A₂ = -0.05051 .10^-8 ±0.00002 .10^-8

Formulæ for magnitudes

Total magnitude :
m₁ = H₁ + 5log(Δ) + 10 log(r) avec H₁ = 14.07± 0.18 calculé à l'aide de 65 observation(s).
Nuclear magnitude :
m₂ = H₂ + 5log(Δ) + 5 log(r) avec H₂ = 18.05±1.83 calculé à l'aide de 4 observation(s).

Elements for the next transit through perihelion

Epoch :2011 September 30 at 0h TT, julian day 2455834.5 TT.

T =2011 September 28.75270 TT.
q :0.5296436 ua	(J2000)	P	Q
n : 0.18777896°/jour	ω : 326.2449088°	+0.56843238	-0.81938137
a : 3.0202166 ua	Ω : 89.0074872°	+0.77028467	+0.49836602
e : 0.8246339	i : 4.2532506°	+0.28904354	+0.28327634
P =5.25 years

Elements for the previous transit(s) through perihelion

Epoch :2001 March 29 at 0h TT, julian day 2451997.5 TT.

T =2001 March 29.92687 TT.
q :0.5284115 ua	(J2000)	P	Q
n : 0.18772056°/jour	ω : 326.1314797°	+0.56898025	-0.81899717
a : 3.0208430 ua	Ω : 89.0822674°	+0.76998760	+0.49889616
e : 0.8250781	i : 4.2556003°	+0.28875694	+0.28345414
P =5.25 years

Epoch :1995 December 25 at 0h TT, julian day 2450076.5 TT.

T =1995 December 25.98446 TT.
q :0.5320490 ua	(J2000)	P	Q
n : 0.18715516°/jour	ω : 326.0538532°	+0.56904449	-0.81896376
a : 3.0269240 ua	Ω : 89.1555571°	+0.76995146	+0.49901975
e : 0.8242278	i : 4.2483885°	+0.28872672	+0.28333310
P =5.27 years

Contact

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

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