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Note number : 0134 P/Kowal-Mrkos : 143P

Introduction

The following improved orbital elements, are from 404 observations 1984 April 23 to 2014 November 16. Perturbations by all nine planets were taken into account, and relativity effect of the sun.

The mean residual is 0.36 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2009 June 12 at 0h TT, julian day 2454994.5.

Perihelion passage (T) 2009 June 12.19774 TT ±0.00000 TT
Argument of perihelion (ω) 320.7601938° ±0.0000627°
>Longitude of the node (Ω) 245.3685811° ۪.0000628°
Inclinaison (i) 4.6898998° ±0.0000052°
Perihelion distance (q) 2.5382006 ua ±0.0000002 ua
Eccentricity (e) 0.4098120 ±0.0000003
Semimajor axis (a) 4.3006649 ua ±0.0000025 ua
Mean motion (n) 0.11050977°/jour ±0.00000010°/jour
Period (P) 8.919 years ±0.0000078 (0.0028 day)

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) with H1 = 11.48± 0.06 calculated using 175 observation(s).
Nuclear magnitude :
m2 = H2 + 5log(Δ) + 5 log(r) with H2 = 14.07±0.02 calculated using 115 observation(s).

Elements for the next transit through perihelion

Epoch :2018 May 7 at 0h TT, julian day 2458245.5 TT.

T =2018 May 7.30025 TT.
q :2.5322568 ua (J2000) P Q
n : 0.11064977°/jour ω : 320.8674517° -0.89556062 +0.43867855
a : 4.2970366 ua Ω : 245.3030733° -0.38490986 -0.84768899
e : 0.4106969 i : 4.6959397° -0.22319403 -0.29830271
P =8.91 years

Elements for the previous transit(s) through perihelion

Epoch :2000 July 1 at 0h TT, julian day 2451726.5 TT.

T =2000 July 1.78764 TT.
q :2.5467384 ua (J2000) P Q
n : 0.11016923°/jour ω : 320.5883222° -0.89620032 +0.43738330
a : 4.3095227 ua Ω : 245.4983965° -0.38363041 -0.84813075
e : 0.4090440 i : 4.6837282° -0.22282887 -0.29894828
P =8.95 years

Epoch :1991 August 2 at 0h TT, julian day 2448470.5 TT.

T =1991 August 2.29474 TT.
q :2.5320588 ua (J2000) P Q
n : 0.11088622°/jour ω : 320.4560102° -0.89617581 +0.43741163
a : 4.2909258 ua Ω : 245.6325900° -0.38358498 -0.84809210
e : 0.4099038 i : 4.6868548° -0.22300555 -0.29901648
P =8.89 years

Epoch :1984 June 8 at 0h TT, julian day 2445859.5 TT.

T =1984 June 8.31841 TT.
q :1.9489302 ua (J2000) P Q
n : 0.13416066°/jour ω : 338.3182063° -0.67334015 +0.73775923
a : 3.7790786 ua Ω : 249.3208082° -0.67052662 -0.63684670
e : 0.4842843 i : 2.9538520° -0.31145961 -0.22391426
P =7.35 years

Contact

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

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