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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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:
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
(2004-Jul-17.83756315)
0.00033289 TDB
period 5356.548123983288
14.67
6.4283e-05
1.76e-07
d
yr
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] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)  

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

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Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 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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