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Note number : 0047 P/Wild 4 : 116P

Introduction

The following improved orbital elements, are from 1817 observations 2006 September 24 to 2015 January 11, including full planetary and non-gravitational effect of type II, and relativity effect of the sun.

The mean residual is 0.40 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 11.88971 TT ±0.00558 TT
Argument of perihelion (ω) 173.4283087° ±0.0002741°
>Longitude of the node (Ω) 21.0195732° ۪.0002695°
Inclinaison (i) 3.6075028° ±0.0000332°
Perihelion distance (q) 2.1855987 ua ±0.0000173 ua
Eccentricity (e) 0.3726303 ±0.0000080
Semimajor axis (a) 3.4837493 ua ±0.0000717 ua
Mean motion (n) 0.15157715°/jour ±0.00000468°/jour
Period (P) 6.502 years ±0.0002009 (0.0734 day)

Non-gravitational parameters :

A1 = 0.19480 .10-8 ±0.06366 .10-8
A2 = -0.52299 .10-8 ±0.01107 .10-8
A3 = 0.75596 .10-8 ±0.01209 .10-8

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) with H1 = 10.90± 0.05 calculated using 181 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 16.88202 TT.
q :2.1970512 ua (J2000) P Q
n : 0.15115196°/jour ω : 173.2953656° -0.96903743 +0.24588642
a : 3.4902794 ua Ω : 20.9804137° -0.22935764 -0.86264076
e : 0.3705228 i : 3.6031783° -0.09144147 -0.44203031
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 18.86236 TT.
q :2.1749082 ua (J2000) P Q
n : 0.15197834°/jour ω : 173.5948743° -0.96751985 +0.25178200
a : 3.4776156 ua Ω : 21.0300607° -0.23464105 -0.86115961
e : 0.3745979 i : 3.6122035° -0.09406872 -0.44159931
P =6.49 years

Contact

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

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