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Note number : 0105 P/Tuttle : 8P

• 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 1676 observations 1967 January 7 to 2008 June 10, including full planetary and non-gravitational effect of type II, and relativity effect of the sun.

The mean residual is 0.46 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2008 January 27 at 0h TT, julian day 2454492.5.

Perihelion passage (T)	2008 January 27.02289 TT	±0.00000 TT
Argument of perihelion (ω)	207.5067870°	±0.0000019°
>Longitude of the node (Ω)	270.3415223°	۪.0000035°
Inclinaison (i)	54.9828539°	±0.0000030°
Perihelion distance (q)	1.0271317 ua	±0.0000000 ua
Eccentricity (e)	0.8198546	±0.0000002
Semimajor axis (a)	5.7016827 ua	±0.0000058 ua
Mean motion (n)	0.07239349°/jour	±0.00000011°/jour
Period (P)	13.615 years	±0.0000208 (0.0076 day)

Non-gravitational parameters :

A₁ = 0.05362 .10^-8 ±0.00245 .10^-8
A₂ = 0.01362 .10^-8 ±0.00001 .10^-8
A₃ = -0.00893 .10^-8 ±0.00257 .10^-8

Formulæ for magnitudes

Total magnitude :
m₁ = H₁ + 5log(Δ) + 10 log(r) avec H₁ = 13.27± 0.13 calculé à l'aide de 214 observation(s).
Nuclear magnitude :
m₂ = H₂ + 5log(Δ) + 5 log(r) avec H₂ = 14.97±0.01 calculé à l'aide de 1014 observation(s).

Elements for the next transit through perihelion

Epoch :2021 August 27 at 0h TT, julian day 2459453.5 TT.

T =2021 August 27.73572 TT.
q :1.0260089 ua	(J2000)	P	Q
n : 0.07227917°/jour	ω : 207.4888039°	-0.26849047	-0.50830103
a : 5.7076931 ua	Ω : 270.2039154°	+0.96326386	-0.13641085
e : 0.8202410	i : 54.9111117°	+0.00596765	-0.85030709
P =13.64 years

Elements for the previous transit(s) through perihelion

Epoch :1994 June 25 at 0h TT, julian day 2449528.5 TT.

T =1994 June 25.30522 TT.
q :0.9977243 ua	(J2000)	P	Q
n : 0.07296814°/jour	ω : 206.7031315°	-0.26825812	-0.51199634
a : 5.6717082 ua	Ω : 270.5484929°	+0.96318084	-0.12681254
e : 0.8240875	i : 54.6925768°	+0.01789572	-0.84957538
P =13.51 years

Epoch :1980 December 14 at 0h TT, julian day 2444587.5 TT.

T =1980 December 14.70642 TT.
q :1.0149218 ua	(J2000)	P	Q
n : 0.07203508°/jour	ω : 206.8856429°	-0.27191244	-0.51376913
a : 5.7205792 ua	Ω : 270.5838251°	+0.96218763	-0.13102024
e : 0.8225841	i : 54.4630181°	+0.01608059	-0.84786495
P =13.68 years

Epoch :1967 March 31 at 0h TT, julian day 2439580.5 TT.

T =1967 March 31.28855 TT.
q :1.0229060 ua	(J2000)	P	Q
n : 0.07159736°/jour	ω : 206.9043816°	-0.27120036	-0.51553976
a : 5.7438713 ua	Ω : 270.4906406°	+0.96238407	-0.13089417
e : 0.8219135	i : 54.3748693°	+0.01634856	-0.84680900
P =13.77 years

Contact

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

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