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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.


:
Orbital Elements at Epoch 2455902.5 (2011-Dec-07.0) TDB
Reference: JPL K192/41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04425258918935492 1.9476e-08  
a 5.99651308297346 3.7868e-08 au
q 5.731151852944044 1.2993e-07 au
i 9.380950708622926 1.8197e-06 deg
node 312.5873239709144 1.0762e-05 deg
peri 50.31817184622902 2.45e-05 deg
M 180.3833646435243 2.1808e-05 deg
tp 2458578.528048864799
(2019-Apr-05.02804887)
0.00032146 TDB
period 5363.479255022106
14.68
5.0806e-05
1.391e-07
d
yr
n .06712061012688976 6.3581e-10 deg/d
Q 6.261874313002877 3.9544e-08 au
  Orbit Determination Parameters
   # obs. used (total)      33664  
   data-arc span      8814 days (24.13 yr)  
   first obs. used      1997-03-04  
   last obs. used      2021-04-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .68604  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2021-May-04 23:56:22  

Additional Information
 Earth MOID = 4.73604 au 
 Jupiter MOID = .74018 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 8.6   1. K192/41 2 parameter fit from 7040 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a K192/41 autocmod 2.9c
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   
 1945.8       1941 VI   
 1931.2   29P/1927 V1   1925 II   1927i 
 1901.8   29P/1902 E1   1908 IV   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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