Presentation list by number list by name list by date ASCII files

Note number : 0056 P/Hartley 1 : 100P

Introduction

The following improved orbital elements, are from 220 observations 1985 June 13 to 2010 July 12, including full planetary and non-gravitational effect of type II, and 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 : 2009 December 6 at 0h TT, julian day 2455171.5.

Perihelion passage (T) 2009 December 6.15034 TT ±0.00000 TT
Argument of perihelion (ω) 181.7087490° ±0.0000770°
>Longitude of the node (Ω) 37.8446934° ۪.0000920°
Inclinaison (i) 25.6543533° ±0.0000181°
Perihelion distance (q) 1.9824100 ua ±0.0000014 ua
Eccentricity (e) 0.4186244 ±0.0000019
Semimajor axis (a) 3.4098609 ua ±0.0000138 ua
Mean motion (n) 0.15653054°/jour ±0.00000095°/jour
Period (P) 6.297 years ±0.0000383 (0.0140 day)

Non-gravitational parameters :

A1 = 0.18030 .10-8 ±0.01361 .10-8
A2 = -0.00310 .10-8 ±0.00056 .10-8

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) avec H1 = 13.84± 0.08 calculé à l'aide de 73 observation(s).
Nuclear magnitude :
m2 = H2 + 5log(Δ) + 5 log(r) avec H2 = 16.12±0.19 calculé à l'aide de 12 observation(s).

Elements for the next transit through perihelion

Epoch :2016 April 2 at 0h TT, julian day 2457480.5 TT.

T =2016 April 2.02574 TT.
q :2.0105603 ua (J2000) P Q
n : 0.15529370°/jour ω : 181.8621985° -0.77260606 +0.57726713
a : 3.4279421 ua Ω : 37.7249872° -0.57677092 -0.46420478
e : 0.4134789 i : 25.5892226° -0.26535859 -0.67177123
P =6.35 years

Elements for the previous transit(s) through perihelion

Epoch :2003 August 18 at 0h TT, julian day 2452869.5 TT.

T =2003 August 18.01328 TT.
q :1.9797127 ua (J2000) P Q
n : 0.15664018°/jour ω : 181.5308268° -0.77409831 +0.57447363
a : 3.4082696 ua Ω : 37.8920811° -0.57612692 -0.46512474
e : 0.4191443 i : 25.6636794° -0.26239202 -0.67352730
P =6.29 years

Epoch :1997 May 28 at 0h TT, julian day 2450596.5 TT.

T =1997 May 28.51363 TT.
q :1.8186829 ua (J2000) P Q
n : 0.16364056°/jour ω : 178.9312952° -0.78862723 +0.55115613
a : 3.3103614 ua Ω : 38.9030019° -0.56730484 -0.48125730
e : 0.4506090 i : 25.7232620° -0.23713353 -0.68162918
P =6.02 years

Epoch :1991 May 17 at 0h TT, julian day 2448393.5 TT.

T =1991 May 17.67420 TT.
q :1.8183720 ua (J2000) P Q
n : 0.16364607°/jour ω : 178.7555521° -0.78982289 +0.54930015
a : 3.3102871 ua Ω : 38.9489023° -0.56640708 -0.48257516
e : 0.4506906 i : 25.7246715° -0.23529306 -0.68219540
P =6.02 years

Epoch :1985 June 11 at 0h TT, julian day 2446227.5 TT.

T =1985 June 11.65022 TT.
q :1.5397973 ua (J2000) P Q
n : 0.17580564°/jour ω : 174.1435589° -0.81083290 +0.51562735
a : 3.1558343 ua Ω : 41.0629608° -0.55263932 -0.51871746
e : 0.5120791 i : 24.9322547° -0.19271687 -0.68195354
P =5.61 years

Contact

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

Presentation list by number list by name list by date ASCII files
Caution : This Website was created with the Ministère de l'Education Nationale, the CNRS and the CNES support. Any use of the data published on this website requires the IMCCE agreement..