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Note number : 0160 P/Tempel-Tuttle : 55P

• Introduction
• Elements
• Formulæ for magnitudes
• 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 468 observations 1865 December 21 to 1998 July 5, including full planetary and non-gravitational effect of type II, but not the relativity effect of the Sun.

The mean residual is 1.28 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 1998 March 8 at 0h TT, julian day 2450880.5.

Perihelion passage (T)	1998 February 28.09653 TT	±0.00001 TT
Argument of perihelion (ω)	172.4967065°	±0.0000980°
>Longitude of the node (Ω)	235.2584318°	۪.0001057°
Inclinaison (i)	162.4861567°	±0.0000320°
Perihelion distance (q)	0.9765889 ua	±0.0000004 ua
Eccentricity (e)	0.9055092	±0.0000026
Semimajor axis (a)	10.3352760 ua	±0.0002919 ua
Mean motion (n)	0.02966340°/jour	±0.00000126°/jour
Period (P)	33.227 years	±0.0014076 (0.5141 day)

Non-gravitational parameters :

A₁ = -0.13459 .10^-8 ±0.02912 .10^-8
A₂ = 0.00927 .10^-8 ±0.00002 .10^-8

Formulæ for magnitudes

Total magnitude :
m₁ = H₁ + 5log(Δ) + 10 log(r) avec H₁ = 12.92± 0.11 calculé à l'aide de 81 observation(s).
Nuclear magnitude :
m₂ = H₂ + 5log(Δ) + 5 log(r) avec H₂ = 14.40±0.27 calculé à l'aide de 21 observation(s).

Elements for the previous transit(s) through perihelion

Epoch :1965 April 30 at 0h TT, julian day 2438880.5 TT.

T =1965 April 30.00784 TT.
q :0.9816266 ua	(J2000)	P	Q
n : 0.02993497°/jour	ω : 172.5644270°	+0.46576095	+0.85064966
a : 10.2726739 ua	Ω : 235.1152176°	+0.79581974	-0.28215214
e : 0.9044429	i : 162.7065579°	+0.38695953	-0.44360493
P =32.93 years

Epoch :1932 July 12 at 0h TT, julian day 2426900.5 TT.

T =1932 July 12.70624 TT.
q :0.9785695 ua	(J2000)	P	Q
n : 0.02976478°/jour	ω : 172.6893896°	+0.46844591	+0.84922549
a : 10.3117957 ua	Ω : 235.0612550°	+0.79479970	-0.28463408
e : 0.9051019	i : 162.7079508°	+0.38581326	-0.44474657
P =33.11 years

Epoch :1899 July 1 at 0h TT, julian day 2414836.5 TT.

T =1899 July 1.99168 TT.
q :0.9725757 ua	(J2000)	P	Q
n : 0.02944410°/jour	ω : 172.2082032°	+0.46843129	+0.85019199
a : 10.3865305 ua	Ω : 234.5937503°	+0.79386586	-0.28566859
e : 0.9063618	i : 162.8528145°	+0.38774878	-0.44222961
P =33.47 years

Epoch :1866 January 11 at 0h TT, julian day 2402612.5 TT.

T =1866 January 11.62433 TT.
q :0.9765397 ua	(J2000)	P	Q
n : 0.02940397°/jour	ω : 170.9025543°	+0.46980580	+0.84996680
a : 10.3959795 ua	Ω : 233.2526360°	+0.79006132	-0.28436291
e : 0.9060656	i : 162.6903937°	+0.39380912	-0.44350217
P =33.52 years

Contact

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

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