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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 2457262.5 (2015-Aug-28.0) TDB
Reference: JPL K043/67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04164442422772476 1.5493e-08  
a 6.012037561045346 5.2635e-08 AU
q 5.761669718380158 8.3457e-08 AU
i 9.377178759160429 2.0847e-06 deg
node 312.4077824484874 1.2371e-05 deg
peri 49.7006997642919 3.3866e-05 deg
M 272.1151301814212 3.3201e-05 deg
tp 2458576.945450879525
(2019-Apr-03.44545088)
0.00050651 JED
period 5384.321138478777
14.74
7.0709e-05
1.936e-07
d
yr
n .06686079651291196 8.7805e-10 deg/d
Q 6.262405403710535 5.4827e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      20744  
   data-arc span      41408 days (113.37 yr)  
   first obs. used      1902-03-04  
   last obs. used      2015-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .77283  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Aug-18 21:57:42  

Additional Information
 Earth MOID = 4.76585 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. K043/67 from 2588 observations, assumed slope, autocmod 2.6
comet total magnitude slope K1 7.   n/a K043/67 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 12:07 00:05 Jupiter 1.95039549976624 1.95039430910414 1.95039669045052 2.88136323876278 2.72647927454219 2426171.004802103 4.57266121564493 13.3698603224677 4.835126177671 88.0700173620956 2905302.68087912 T K043/67 CATAB v2.0c-linF95 2015-Aug-18 22:02:04 2015-Aug-18 22:02
1974-May-21 21:32 < 00:01 Jupiter 1.00280344048075 1.00280241574139 1.00280446521999 2.80991196165536 2.49124388173907 2442189.397084836 0.402344164335751 4.90133628673766 0.908135809082426 -30.8229249909139 4109819.59831728 T K043/67 CATAB v2.0c-linF95 2015-Aug-18 22:02:04 2015-Aug-18 22:02
2037-Oct-11 14:26 < 00:01 Jupiter 0.90222812665551 0.902227508657727 0.902228744655608 2.52760488575381 2.12394977046868 2465343.101374527 0.381295891178662 4.48746777412246 1.33090836693208 -63.6835960149163 3850253.03112337 T K043/67 CATAB v2.0c-linF95 2015-Aug-18 22:02:04 2015-Aug-18 22:02
2084-May-18 16:15 00:08 Jupiter 1.47453283482067 1.47452338229683 1.47454228743316 2.08377416999848 1.7869655321555 2482364.176934469 8.28742868422506 34.388520215559 3.53799489566734 -46.6184705569189 1574854.11833733 T K043/67 CATAB v2.0c-linF95 2015-Aug-18 22:02:04 2015-Aug-18 22:02
2126-Jan-22 12:00 00:13 Jupiter 1.60497816764449 1.60497149108979 1.60498484511411 2.58269016085496 2.36955572606216 2497586.999809588 12.8901319819045 58.7208345938312 8.18886582644178 -86.3567222382916 1261442.31145384 T K043/67 CATAB v2.0c-linF95 2015-Aug-18 22:02:04 2015-Aug-18 22:02
2167-Jul-31 15:15 00:07 Jupiter 1.41644443272702 1.4164327521557 1.41645611363377 2.32038004157303 2.04650419720582 2512752.135457676 7.12050266309469 50.7412205997895 2.90749128715099 -58.7522916300939 2407206.38777217 T K043/67 CATAB v2.0c-linF95 2015-Aug-18 22:02:04 2015-Aug-18 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   
 1945.5       1941 VI   
 1930.8   29P/1927 V1   1925 II   1927i 
 1901.3   29P/1902 E1   1908 IV   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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