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Note number : 0179 P/Vaisala-Oterma : 139P

Introduction

The following improved orbital elements, are from 311 observations 1939 October 7 to 2009 March 21. Perturbations by all nine planets were taken into account, and relativity effect of the sun.

The mean residual is 0.50 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2008 April 19 at 0h TT, julian day 2454575.5.

Perihelion passage (T) 2008 April 19.33651 TT ±0.00000 TT
Argument of perihelion (ω) 165.5187518° ±0.0001862°
>Longitude of the node (Ω) 242.4530738° ۪.0001907°
Inclinaison (i) 2.3296043° ±0.0000099°
Perihelion distance (q) 3.4028383 ua ±0.0000006 ua
Eccentricity (e) 0.2465132 ±0.0000006
Semimajor axis (a) 4.5161217 ua ±0.0000046 ua
Mean motion (n) 0.10269649°/jour ±0.00000016°/jour
Period (P) 9.597 years ±0.0000147 (0.0054 day)

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) avec H1 = 11.47± 0.03 calculé à l'aide de 141 observation(s).
Nuclear magnitude :
m2 = H2 + 5log(Δ) + 5 log(r) avec H2 = 13.85±0.04 calculé à l'aide de 62 observation(s).

Elements for the next transit through perihelion

Epoch :2017 December 10 at 0h TT, julian day 2458097.5 TT.

T =2017 December 10.81397 TT.
q :3.4144149 ua (J2000) P Q
n : 0.10222019°/jour ω : 166.0647501° +0.66541844 -0.74560146
a : 4.5301397 ua Ω : 242.2072597° +0.68091482 +0.62604290
e : 0.2462893 i : 2.3329549° +0.30589754 +0.22836100
P =9.64 years

Elements for the previous transit(s) through perihelion

Epoch :1998 September 28 at 0h TT, julian day 2451084.5 TT.

T =1998 September 28.82881 TT.
q :3.3815848 ua (J2000) P Q
n : 0.10329396°/jour ω : 165.5516265° +0.66869012 -0.74266450
a : 4.4986903 ua Ω : 242.4681923° +0.67808202 +0.62901903
e : 0.2483179 i : 2.3329511° +0.30505457 +0.22974880
P =9.54 years

Epoch :1988 July 18 at 0h TT, julian day 2447360.5 TT.

T =1988 July 18.63585 TT.
q :3.7636665 ua (J2000) P Q
n : 0.09268394°/jour ω : 160.4514296° +0.69657358 -0.71659019
a : 4.8357786 ua Ω : 245.3769494° +0.65292289 +0.65380473
e : 0.2217041 i : 2.2588018° +0.29745076 +0.24297709
P =10.63 years

Epoch :1978 May 18 at 0h TT, julian day 2443646.5 TT.

T =1978 May 18.25473 TT.
q :3.3814510 ua (J2000) P Q
n : 0.10330427°/jour ω : 147.7462422° +0.73082385 -0.68162521
a : 4.4983910 ua Ω : 255.2685069° +0.61811554 +0.68316908
e : 0.2482977 i : 2.1229850° +0.28953354 +0.26204404
P =9.54 years

Epoch :1968 October 22 at 0h TT, julian day 2440151.5 TT.

T =1968 October 22.42037 TT.
q :3.4017802 ua (J2000) P Q
n : 0.10258721°/jour ω : 147.7042519° +0.73143852 -0.68097029
a : 4.5193285 ua Ω : 255.2589603° +0.61752184 +0.68369603
e : 0.2472819 i : 2.1177605° +0.28924810 +0.26237225
P =9.61 years

Epoch :1959 March 4 at 0h TT, julian day 2436631.5 TT.

T =1959 March 4.01297 TT.
q :3.4141742 ua (J2000) P Q
n : 0.10218270°/jour ω : 147.5152036° +0.73151277 -0.68089234
a : 4.5312476 ua Ω : 255.4416941° +0.61742014 +0.68371912
e : 0.2465267 i : 2.1139621° +0.28927744 +0.26251436
P =9.65 years

Epoch :1949 July 16 at 0h TT, julian day 2433113.5 TT.

T =1949 July 16.66367 TT.
q :3.3927240 ua (J2000) P Q
n : 0.10297050°/jour ω : 146.9313820° +0.73540133 -0.67668886
a : 4.5081066 ua Ω : 255.6970584° +0.61343644 +0.68721176
e : 0.2474171 i : 2.1134973° +0.28788992 +0.26425779
P =9.57 years

Epoch :1939 December 30 at 0h TT, julian day 2429627.5 TT.

T =1939 December 30.94393 TT.
q :3.3899552 ua (J2000) P Q
n : 0.10274920°/jour ω : 147.2515750° +0.73159798 -0.68080160
a : 4.5145771 ua Ω : 255.6980035° +0.61728897 +0.68374609
e : 0.2491090 i : 2.1106071° +0.28934189 +0.26267941
P =9.59 years

Contact

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

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