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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 2456978.5 (2014-Nov-17.0) TDB
Reference: JPL K043/65 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04185196528135934 1.6244e-08  
a 6.009493660694381 5.532e-08 AU
q 5.757984540648451 8.4237e-08 AU
i 9.37613075022886 2.1081e-06 deg
node 312.4171421285203 1.247e-05 deg
peri 50.23303646250383 3.3894e-05 deg
M 252.5943151698984 3.3132e-05 deg
tp 2458583.888016119149
(2019-Apr-10.38801612)
0.00050808 JED
period 5380.90406217418
14.73
7.4301e-05
2.034e-07
d
yr
n .06690325563145988 9.2382e-10 deg/d
Q 6.261002780740311 5.7636e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      20274  
   data-arc span      41153 days (112.67 yr)  
   first obs. used      1902-03-04  
   last obs. used      2014-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .77531  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-Nov-07 13:09:18  

Additional Information
 Earth MOID = 4.76241 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. K043/65 from 2579 observations, assumed slope, autocmod 2.6
comet total magnitude slope K1 7.   n/a K043/65 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 12:06 00:05 Jupiter 1.9503963105255 1.9503950689009 1.95039755214937 2.88136354021234 2.72647965932865 2426171.004393983 4.55922305314694 13.3313806864433 5.02616011687655 87.9829186107997 2794771.66019022 T K043/65 CATAB v2.0c-linF95 2014-Nov-07 13:22:01 2014-Nov-07 13:22
1974-May-21 21:32 < 00:01 Jupiter 1.00280281320675 1.00280176055384 1.00280386585915 2.80991010745041 2.49124157827025 2442189.396969248 0.408986294889836 5.07950034225248 0.908355672650783 -30.8055304084016 4094105.48038044 T K043/65 CATAB v2.0c-linF95 2014-Nov-07 13:22:01 2014-Nov-07 13:22
2037-Oct-11 14:26 < 00:01 Jupiter 0.902227662841122 0.902227023016603 0.902228302667902 2.52760414203837 2.12394865818219 2465343.101728025 0.385050105176703 4.70000917545858 1.34330905714298 -63.1811184892881 3796565.99862885 T K043/65 CATAB v2.0c-linF95 2014-Nov-07 13:22:01 2014-Nov-07 13:22
2084-May-18 16:13 00:08 Jupiter 1.47453412486888 1.47452464512948 1.47454360469702 2.0837726080234 1.78696399198085 2482364.175818298 8.30857504468491 34.4515638108327 3.73003524902905 -46.5942679810452 1493952.66574299 T K043/65 CATAB v2.0c-linF95 2014-Nov-07 13:22:01 2014-Nov-07 13:22
2126-Jan-22 12:04 00:13 Jupiter 1.6049793382843 1.60497300954111 1.60498566778336 2.58269663370886 2.36956294357509 2497587.002989216 12.9950570015416 59.1501031966997 8.67247442208996 -86.6551253787965 1191481.78558313 T K043/65 CATAB v2.0c-linF95 2014-Nov-07 13:22:01 2014-Nov-07 13:22
2167-Jul-31 15:16 00:07 Jupiter 1.41644428447915 1.41643259819226 1.41645597110672 2.32038024428689 2.04650439646568 2512752.136195531 7.12938935044118 50.7985857418286 2.92085097261263 -58.7687969481009 2396627.34585303 T K043/65 CATAB v2.0c-linF95 2014-Nov-07 13:22:01 2014-Nov-07 13:22

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1989.8       1989 XV   
 1975.1       1974 II   
 1960.3       1957 IV   
 1945.6       1941 VI   
 1930.9   29P/1927 V1   1925 II   1927i 
 1901.4   29P/1902 E1   1908 IV   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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