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29P/Schwassmann-Wachmann 1
Classification: Jupiter-family Comet          SPK-ID: 1000079
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457164.5 (2015-May-22.0) TDB
Reference: JPL K043/66 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04167236691542867 1.5931e-08  
a 6.011206406300244 5.4359e-08 AU
q 5.760705207332525 8.3906e-08 AU
i 9.377029669986966 2.0988e-06 deg
node 312.4087108743847 1.2437e-05 deg
peri 49.88913203254688 3.3971e-05 deg
M 265.3747615449091 3.3294e-05 deg
tp 2458579.463945714643
(2019-Apr-05.96394571)
0.00050898 JED
period 5383.204616166189
14.74
7.302e-05
1.999e-07
d
yr
n .0668746640094065 9.0711e-10 deg/d
Q 6.261707605267962 5.6624e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      20460  
   data-arc span      41342 days (113.19 yr)  
   first obs. used      1902-03-04  
   last obs. used      2015-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .77476  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-May-12 21:45:26  

Additional Information
 Earth MOID = 4.76423 AU 
 T_jup = 2.985 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5.5 mag 1. K043/66 from 2580 observations, assumed slope, autocmod 2.6
comet total magnitude slope K1 7.   n/a K043/66 autocmod 2.6
diameter diameter 30.8 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

29P/Schwassmann-Wachmann 1          Discovered 1927-Nov-15 by Schwassmann, A. and Wachmann, A. A. at Hamburg Observatory, Germany
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (AU) Minimum Distance (AU) Maximum Distance (AU) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1930-Jul-13 12:06 00:05 Jupiter 1.95039592332934 1.95039469771735 1.95039714894063 2.88136329695207 2.72647937062825 2426171.004466423 4.55915180438514 13.3296692281367 4.95169339215831 87.9497329430974 2836742.55297884 T K043/66 CATAB v2.0c-linF95 2015-May-12 22:02:03 2015-May-12 22:02
1974-May-21 21:32 < 00:01 Jupiter 1.00280309377739 1.00280205135385 1.00280413620141 2.80991084444729 2.49124250440196 2442189.397026126 0.406634086818306 5.01395106423255 0.907249215677545 -30.8052721615023 4103244.49309975 T K043/66 CATAB v2.0c-linF95 2015-May-12 22:02:03 2015-May-12 22:02
2037-Oct-11 14:26 < 00:01 Jupiter 0.902227871964513 0.902227240122383 0.902228503809395 2.52760443174171 2.12394910539567 2465343.101535979 0.383592871796083 4.62253720958619 1.33821960362068 -63.3559820163991 3817370.14424785 T K043/66 CATAB v2.0c-linF95 2015-May-12 22:02:03 2015-May-12 22:02
2084-May-18 16:14 00:08 Jupiter 1.47453332243468 1.47452385428668 1.47454279067162 2.08377387159713 1.78696529049386 2482364.176628755 8.29944649482309 34.4246578907954 3.65921036789736 -46.6051105291419 1522845.99169724 T K043/66 CATAB v2.0c-linF95 2015-May-12 22:02:03 2015-May-12 22:02
2126-Jan-22 12:02 00:13 Jupiter 1.60497853480542 1.60497207824857 1.60498499221678 2.58269322763653 2.36955911964132 2497587.001375052 12.9532059354822 58.9778398751011 8.49641982992898 -86.5411895659943 1216025.01624974 T K043/66 CATAB v2.0c-linF95 2015-May-12 22:02:03 2015-May-12 22:02
2167-Jul-31 15:16 00:07 Jupiter 1.41644405556937 1.41643237204422 1.41645573943214 2.32038061086648 2.04650476488086 2512752.136108671 7.12568327718539 50.775497842056 2.914999079038 -58.7619631100776 2401259.30950745 T K043/66 CATAB v2.0c-linF95 2015-May-12 22:02:03 2015-May-12 22:02

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1989.8       1989 XV   
 1975.0       1974 II   
 1960.3       1957 IV   
 1945.6       1941 VI   
 1930.8   29P/1927 V1   1925 II   1927i 
 1901.4   29P/1902 E1   1908 IV   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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