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Note number : 0047 P/Wild 4 : 116P

Introduction

The following improved orbital elements, are from 1911 observations 2006 September 24 to 2015 April 21, including full planetary and non-gravitational effect of type II, and relativity effect of the sun.

The mean residual is 0.35 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2014 December 30 at 0h TT, julian day 2457021.5.

Perihelion passage (T) 2016 January 11.89055 TT ±0.00467 TT
Argument of perihelion (ω) 173.4284468° ±0.0002290°
>Longitude of the node (Ω) 21.0195907° ۪.0002272°
Inclinaison (i) 3.6074774° ±0.0000284°
Perihelion distance (q) 2.1856012 ua ±0.0000145 ua
Eccentricity (e) 0.3726297 ±0.0000067
Semimajor axis (a) 3.4837499 ua ±0.0000601 ua
Mean motion (n) 0.15157711°/jour ±0.00000392°/jour
Period (P) 6.502 years ±0.0001682 (0.0614 day)

Non-gravitational parameters :

A1 = -0.01959 .10-8 ±0.05480 .10-8
A2 = -0.59912 .10-8 ±0.00982 .10-8
A3 = 0.79488 .10-8 ±0.00920 .10-8

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) with H1 = 11.07± 0.04 calculated using 227 observation(s).
Nuclear magnitude :
m2 = H2 + 5log(Δ) + 5 log(r) with H2 = 11.90±0.00 calculated using 607 observation(s).

Elements for the next transit through perihelion

Epoch :2022 July 16 at 0h TT, julian day 2459776.5 TT.

T =2022 July 16.87081 TT.
q :2.1970509 ua (J2000) P Q
n : 0.15115314°/jour ω : 173.2961131° -0.96903337 +0.24590242
a : 3.4902612 ua Ω : 20.9806108° -0.22937190 -0.86263746
e : 0.3705196 i : 3.6031183° -0.09144867 -0.44202785
P =6.52 years

Elements for the previous transit(s) through perihelion

Epoch :2009 July 18 at 0h TT, julian day 2455030.5 TT.

T =2009 July 18.86240 TT.
q :2.1749096 ua (J2000) P Q
n : 0.15197764°/jour ω : 173.5947608° -0.96751982 +0.25178208
a : 3.4776263 ua Ω : 21.0301789° -0.23464117 -0.86115970
e : 0.3745994 i : 3.6121914° -0.09406866 -0.44159910
P =6.49 years

Epoch :2003 January 21 at 0h TT, julian day 2452660.5 TT.

T =2003 January 21.45381 TT.
q :2.1697137 ua (J2000) P Q
n : 0.15216448°/jour ω : 173.4149474° -0.96815969 +0.24930527
a : 3.4747791 ua Ω : 21.0635074° -0.23245727 -0.86173185
e : 0.3755823 i : 3.6156548° -0.09290016 -0.44188810
P =6.48 years

Contact

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

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