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Note number : 0124 P/Crommelin : 27P

Introduction

The following improved orbital elements, are from 480 observations 1956 October 3 to 2012 January 26, including full planetary and non-gravitational effect of type II, and relativity effect of the sun.

The mean residual is 0.97 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2011 August 3 at 0h TT, julian day 2455776.5.

Perihelion passage (T) 2011 August 3.80890 TT ±0.00000 TT
Argument of perihelion (ω) 195.9801913° ±0.0000654°
>Longitude of the node (Ω) 250.6379134° ۪.0000913°
Inclinaison (i) 28.9569106° ±0.0000316°
Perihelion distance (q) 0.7478759 ua ±0.0000003 ua
Eccentricity (e) 0.9187425 ±0.0000022
Semimajor axis (a) 9.2037754 ua ±0.0002550 ua
Mean motion (n) 0.03529840°/jour ±0.00000147°/jour
Period (P) 27.923 years ±0.0011604 (0.4239 day)

Non-gravitational parameters :

A1 = 0.07219 .10-8 ±0.01354 .10-8
A2 = -0.00009 .10-8 ±0.00001 .10-8

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) avec H1 = 12.75± 0.20 calculé à l'aide de 42 observation(s).
Nuclear magnitude :
m2 = H2 + 5log(Δ) + 5 log(r) avec H2 = 15.59±0.04 calculé à l'aide de 41 observation(s).

Elements for the next transit through perihelion

Epoch :2039 May 27 at 0h TT, julian day 2465935.5 TT.

T =2039 May 27.25996 TT.
q :0.7404481 ua (J2000) P Q
n : 0.03557533°/jour ω : 195.9706150° +0.09180822 -0.88202312
a : 9.1559498 ua Ω : 250.6736538° +0.95880656 +0.20359688
e : 0.9191293 i : 29.3258062° +0.26881450 -0.42495121
P =27.71 years

Elements for the previous transit(s) through perihelion

Epoch :1984 February 20 at 0h TT, julian day 2445750.5 TT.

T =1984 February 20.17060 TT.
q :0.7345267 ua (J2000) P Q
n : 0.03596429°/jour ω : 195.8413214° +0.08939426 -0.88362417
a : 9.0898155 ua Ω : 250.9007387° +0.95846406 +0.20179704
e : 0.9191923 i : 29.1013438° +0.27084185 -0.42247638
P =27.41 years

Contact

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

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