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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 2456717.5 (2014-Mar-01.0) TDB
Reference: JPL K043/63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04221641436869197 1.7357e-08  
a 6.007163210668838 5.5933e-08 AU
q 5.753562319386881 8.7072e-08 AU
i 9.374673220793255 2.163e-06 deg
node 312.442868114808 1.2503e-05 deg
peri 50.56115822596771 3.3339e-05 deg
M 234.7965651104477 3.2316e-05 deg
tp 2458587.821719320015
(2019-Apr-14.32171932)
0.00049711 JED
period 5377.774336216642
14.72
7.5109e-05
2.056e-07
d
yr
n .06694219160063646 9.3495e-10 deg/d
Q 6.260764101950796 5.8294e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      19283  
   data-arc span      40887 days (111.94 yr)  
   first obs. used      1902-03-04  
   last obs. used      2014-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .79151  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-Feb-19 13:18:37  

Additional Information
 Earth MOID = 4.75631 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. K043/63 from 2526 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 7.   n/a K043/63 autocmod 2.5c
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 00:04 Jupiter 1.95039745631978 1.95039625369627 1.95039865892021 2.88136316704974 2.72647935854131 2426171.003936151 4.47288701407604 13.1027021263376 5.05186067993533 88.8684208905186 2781576.25875244 T K043/63 CATAB v2.0c-linF95 2014-Feb-19 13:22:04 2014-Feb-19 13:22
1974-May-21 21:32 < 00:01 Jupiter 1.00280158375238 1.00280053205956 1.00280263544391 2.80990719634261 2.4912378791037 2442189.397387619 0.401950699624516 5.11181177193876 0.911237743733484 -30.6188722949686 4059896.18074809 T K043/63 CATAB v2.0c-linF95 2014-Feb-19 13:22:04 2014-Feb-19 13:22
2037-Oct-11 14:28 < 00:01 Jupiter 0.902226985610616 0.902226334591267 0.902227636632631 2.52760356795314 2.12394764320811 2465343.102962084 0.39087588230006 4.76554624940222 1.37920056804139 -62.2791254791096 3671607.7513164 T K043/63 CATAB v2.0c-linF95 2014-Feb-19 13:22:04 2014-Feb-19 13:22
2084-May-18 16:05 00:08 Jupiter 1.47453983685081 1.47453020331983 1.47454947046873 2.08376256125172 1.78695352171681 2482364.169993431 8.41369601045308 34.7368359782347 3.8477345882617 -46.2135562321751 1439575.29681096 T K043/63 CATAB v2.0c-linF95 2014-Feb-19 13:22:04 2014-Feb-19 13:22
2126-Jan-22 12:17 00:13 Jupiter 1.60498576370732 1.6049800230224 1.60499150509525 2.58271602075994 2.3695849660353 2497587.011714256 13.3945984436653 60.8679599417742 8.90855492292729 -87.3268938531705 1160624.76119186 T K043/63 CATAB v2.0c-linF95 2014-Feb-19 13:22:04 2014-Feb-19 13:22
2167-Jul-31 15:13 00:07 Jupiter 1.41644895616795 1.41643722321754 1.41646068946037 2.32037387174307 2.04649813483991 2512752.133957706 7.14983605101006 50.8439016399833 2.94613809781435 -58.7906007371783 2376632.16961041 T K043/63 CATAB v2.0c-linF95 2014-Feb-19 13:22:04 2014-Feb-19 13:22

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1989.8       1989 XV   
 1975.1       1974 II   
 1960.4       1957 IV   
 1945.7       1941 VI   
 1930.9   29P/1927 V1   1925 II   1927i 
 1901.5   29P/1902 E1   1908 IV   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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