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Note number : 0047 P/Wild 4 : 116P

Introduction

The following improved orbital elements, are from 1891 observations 2006 September 24 to 2015 March 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 11.89041 TT ±0.00539 TT
Argument of perihelion (ω) 173.4284516° ±0.0002653°
>Longitude of the node (Ω) 21.0195720° ۪.0002633°
Inclinaison (i) 3.6074851° ±0.0000329°
Perihelion distance (q) 2.1856005 ua ±0.0000167 ua
Eccentricity (e) 0.3726299 ±0.0000077
Semimajor axis (a) 3.4837496 ua ±0.0000693 ua
Mean motion (n) 0.15157713°/jour ±0.00000452°/jour
Period (P) 6.502 years ±0.0001939 (0.0708 day)

Non-gravitational parameters :

A1 = 0.08057 .10-8 ±0.06302 .10-8
A2 = -0.53985 .10-8 ±0.01101 .10-8
A3 = 0.78492 .10-8 ±0.01044 .10-8

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) with H1 = 11.05± 0.04 calculated using 224 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 16.88078 TT.
q :2.1970520 ua (J2000) P Q
n : 0.15115216°/jour ω : 173.2957676° -0.96903513 +0.24589548
a : 3.4902764 ua Ω : 20.9805465° -0.22936571 -0.86263896
e : 0.3705221 i : 3.6031349° -0.09144554 -0.44202877
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 18.86254 TT.
q :2.1749092 ua (J2000) P Q
n : 0.15197812°/jour ω : 173.5948335° -0.96751970 +0.25178256
a : 3.4776190 ua Ω : 21.0301345° -0.23464158 -0.86115954
e : 0.3745982 i : 3.6121957° -0.09406891 -0.44159912
P =6.49 years

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

T =2003 January 21.46646 TT.
q :2.1697126 ua (J2000) P Q
n : 0.15216571°/jour ω : 173.4152344° -0.96815858 +0.24930955
a : 3.4747603 ua Ω : 21.0634735° -0.23246106 -0.86173084
e : 0.3755792 i : 3.6156528° -0.09290215 -0.44188766
P =6.48 years

Contact

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

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