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Note number : 0015 P/Schwassmann-Wachmann 1 : 29P

Introduction

The following improved orbital elements, are from 21147 observations 1902 March 4 to 2014 August 24. Perturbations by all nine planets were taken into account, and relativity effect of the sun.

The mean residual is 0.39 arc second.

Elements

Orbital elements given with respect to the mean ecliptic and equinox of J2000.
Epoch : 2004 July 18 at 0h TT, julian day 2453204.5.

Perihelion passage (T) 2004 July 10.77387 TT ±0.00000 TT
Argument of perihelion (ω) 48.9525759° ±0.0000068°
>Longitude of the node (Ω) 312.7152252° ۪.0000073°
Inclinaison (i) 9.3920995° ±0.0000012°
Perihelion distance (q) 5.7235809 ua ±0.0000000 ua
Eccentricity (e) 0.0441696 ±0.0000000
Semimajor axis (a) 5.9880716 ua ±0.0000002 ua
Mean motion (n) 0.06726259°/jour ±0.00000000°/jour
Period (P) 14.653 years ±0.0000009 (0.0003 day)

Formulæ for magnitudes

Total magnitude :
m1 = H1 + 5log(Δ) + 10 log(r) with H1 = 3.14± 0.02 calculated using 2516 observation(s).
Nuclear magnitude :
m2 = H2 + 5log(Δ) + 5 log(r) with H2 = 8.24±0.01 calculated using 11493 observation(s).

Elements for the next transit through perihelion

Epoch :2019 March 7 at 0h TT, julian day 2458549.5 TT.

T =2019 March 7.78376 TT.
q :5.7668207 ua (J2000) P Q
n : 0.06662908°/jour ω : 47.7759005° +0.99270119 -0.00960630
a : 6.0259685 ua Ω : 312.3952192° -0.05131951 +0.86841822
e : 0.0430052 i : 9.3684376° +0.10913594 +0.49573937
P =14.79 years

Elements for the previous transit(s) through perihelion

Epoch :1989 October 26 at 0h TT, julian day 2447825.5 TT.

T =1989 October 26.49923 TT.
q :5.7717716 ua (J2000) P Q
n : 0.06636749°/jour ω : 49.8545749° +0.99140745 -0.05344561
a : 6.0417923 ua Ω : 312.8471113° -0.01263569 +0.86932950
e : 0.0446922 i : 9.3720978° +0.13019831 +0.49133470
P =14.85 years

Epoch :1974 February 17 at 0h TT, julian day 2442095.5 TT.

T =1974 February 17.43907 TT.
q :5.4478446 ua (J2000) P Q
n : 0.06569457°/jour ω : 14.6239173° +0.90379163 +0.41411120
a : 6.0829804 ua Ω : 320.3503197° -0.40769785 +0.75630894
e : 0.1044119 i : 9.7481148° -0.13016587 +0.50646688
P =15.00 years

Epoch :1957 May 12 at 0h TT, julian day 2435970.5 TT.

T =1957 May 12.82540 TT.
q :5.5376813 ua (J2000) P Q
n : 0.06121501°/jour ω : 355.8027564° +0.74527891 +0.65909093
a : 6.3762322 ua Ω : 322.3276996° -0.60683216 +0.60787586
e : 0.1315120 i : 9.4925286° -0.27625001 +0.44281608
P =16.10 years

Epoch :1941 April 21 at 0h TT, julian day 2430105.5 TT.

T =1941 April 21.59627 TT.
q :5.5228645 ua (J2000) P Q
n : 0.06106555°/jour ω : 356.2262853° +0.75465767 +0.64842076
a : 6.3866316 ua Ω : 322.7212283° -0.59756278 +0.61617239
e : 0.1352461 i : 9.5233151° -0.27094375 +0.44708177
P =16.14 years

Epoch :1925 May 7 at 0h TT, julian day 2424277.5 TT.

T =1925 May 7.82812 TT.
q :5.4749776 ua (J2000) P Q
n : 0.05995274°/jour ω : 359.0854933° +0.79726939 +0.59578968
a : 6.4654191 ua Ω : 323.7725168° -0.55276736 +0.65610666
e : 0.1531906 i : 9.4402378° -0.24250724 +0.46320483
P =16.44 years

Epoch :1908 October 18 at 0h TT, julian day 2418232.5 TT.

T =1908 October 18.75052 TT.
q :5.4953701 ua (J2000) P Q
n : 0.05996856°/jour ω : 357.0796584° +0.78215929 +0.61572667
a : 6.4642824 ua Ω : 324.3422158° -0.56829445 +0.64216979
e : 0.1498871 i : 9.4222795° -0.25547654 +0.45661650
P =16.44 years

Contact

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

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