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

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2455479.5 (2010-Oct-10.0) TDB
Reference: JPL K192/18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04500914311248275 2.2249e-08  
a 5.991345843215139 4.7934e-08 au
q 5.721680500721491 1.592e-07 au
i 9.389125671737105 2.0468e-06 deg
node 312.6271376502153 1.0802e-05 deg
peri 49.40379456763286 2.4922e-05 deg
M 152.9078911096455 2.2341e-05 deg
tp 2453204.337563151076
0.00033289 TDB
period 5356.548123983288
n .06720746116106828 8.0655e-10 deg/d
Q 6.261011185708789 5.0092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      28396  
   data-arc span      8280 days (22.67 yr)  
   first obs. used      1997-03-04  
   last obs. used      2019-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .7135  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2019-Nov-07 14:32:01  

Additional Information
 Earth MOID = 4.72564 au 
 Jupiter MOID = .732002 au 
 T_jup = 2.984 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.3   1. K192/18 2 parameter fit from 3734 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a K192/18 autocmod 2.8
diameter diameter 60.4 km 7.4 Schambeau, C. A.; Fernandez, Y. R.; Lisse, C. M.; Samarasinha, N.; Woodney, L. M. (2015), Icarus 260, pp. 60-72  
geometric albedo albedo 0.033   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (  

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

[ show close-approach data ]
Alternate Designations
 1989.9       1989 XV   
 1975.2       1974 II   
 1960.5       1957 IV   
 1945.9       1941 VI   
 1931.2   29P/1927 V1   1925 II   1927i 
 1901.9   29P/1902 E1   1908 IV   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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