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Note number : 0026 P/Wolf-Harrington : 43P

Introduction

The following improved orbital elements, are from 2609 observations 1996 June 15 to 2011 June 26, including full planetary and non-gravitational effect of type II, and relativity effect of the sun.

The mean residual is 0.55 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2010 July 1 at 0h TT, julian day 2455378.5.

Perihelion passage (T) 2010 July 1.75242 TT ±0.00000 TT
Argument of perihelion (ω) 191.4696562° ±0.0000430°
>Longitude of the node (Ω) 249.8955412° ۪.0000665°
Inclinaison (i) 15.9665044° ±0.0000139°
Perihelion distance (q) 1.3576251 ua ±0.0000003 ua
Eccentricity (e) 0.5944517 ±0.0000008
Semimajor axis (a) 3.3476287 ua ±0.0000078 ua
Mean motion (n) 0.16091560°/jour ±0.00000056°/jour
Period (P) 6.125 years ±0.0000213 (0.0078 day)

Non-gravitational parameters :

A1 = 0.28372 .10-8 ±0.00277 .10-8
A2 = -0.01326 .10-8 ±0.00008 .10-8

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) avec H1 = 11.00± 0.03 calculé à l'aide de 431 observation(s).
Nuclear magnitude :
m2 = H2 + 5log(Δ) + 5 log(r) avec H2 = 12.99±0.02 calculé à l'aide de 1204 observation(s).

Elements for the next transit through perihelion

Epoch :2016 August 19 at 0h TT, julian day 2457619.5 TT.

T =2016 August 19.68405 TT.
q :1.3579466 ua (J2000) P Q
n : 0.16081535°/jour ω : 191.5975417° +0.15628604 -0.95336844
a : 3.3490198 ua Ω : 249.8330641° +0.92678215 +0.23193699
e : 0.5945242 i : 15.9653175° +0.34153992 -0.19311618
P =6.13 years

Elements for the previous transit(s) through perihelion

Epoch :2004 March 17 at 0h TT, julian day 2453081.5 TT.

T =2004 March 17.86453 TT.
q :1.5786328 ua (J2000) P Q
n : 0.15271326°/jour ω : 187.2750108° +0.14602640 -0.94064316
a : 3.4664495 ua Ω : 254.6944570° +0.92289681 +0.24106527
e : 0.5445966 i : 18.5204429° +0.35628327 -0.23891000
P =6.45 years

Epoch :1997 September 29 at 0h TT, julian day 2450720.5 TT.

T =1997 September 29.21610 TT.
q :1.5818251 ua (J2000) P Q
n : 0.15256095°/jour ω : 187.1324422° +0.14729408 -0.94046817
a : 3.4687563 ua Ω : 254.7562508° +0.92243387 +0.24237835
e : 0.5439792 i : 18.5104293° +0.35695966 -0.23826950
P =6.46 years

Contact

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

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