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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 2456799.5 (2014-May-22.0) TDB
Reference: JPL K043/64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0420903312834263 1.6795e-08  
a 6.007987468896092 5.4733e-08 AU
q 5.755109285983581 8.5602e-08 AU
i 9.37505298845617 2.1361e-06 deg
node 312.4336312720836 1.2485e-05 deg
peri 50.45323042759253 3.3425e-05 deg
M 240.3959899146599 3.2456e-05 deg
tp 2458586.543788491324
(2019-Apr-13.04378849)
0.00049858 JED
period 5378.881221439333
14.73
7.3502e-05
2.012e-07
d
yr
n .06692841599942743 9.1458e-10 deg/d
Q 6.260865651808602 5.7036e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      19591  
   data-arc span      40973 days (112.18 yr)  
   first obs. used      1902-03-04  
   last obs. used      2014-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .78853  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-May-12 11:23:38  

Additional Information
 Earth MOID = 4.75914 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. K043/64 from 2543 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 7.   n/a K043/64 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 1.9503973241478 1.95039613889993 1.95039850940344 2.88136306947478 2.7264792446293 2426171.003955179 4.47170689477466 13.095677506587 4.95993676047098 88.731561966088 2833002.87001543 T K043/64 CATAB v2.0c-linF95 2014-May-12 11:32:02 2014-May-12 11:32
1974-May-21 21:32 < 00:01 Jupiter 1.0028017011548 1.00280066750433 1.00280273480584 2.80990770250332 2.49123848970463 2442189.397362642 0.399006938480269 5.00848508448064 0.906009144622211 -30.6518889219214 4092139.17555903 T K043/64 CATAB v2.0c-linF95 2014-May-12 11:32:02 2014-May-12 11:32
2037-Oct-11 14:28 < 00:01 Jupiter 0.902227082628922 0.902226445963799 0.90222771929683 2.52760378933564 2.12394795419489 2465343.102904495 0.38718597402462 4.66837078238015 1.36111215860241 -62.6843148892254 3733479.63359113 T K043/64 CATAB v2.0c-linF95 2014-May-12 11:32:02 2014-May-12 11:32
2084-May-18 16:07 00:08 Jupiter 1.47453868274497 1.4745291380371 1.47454822753953 2.0837649126245 1.7869560120449 2482364.171426403 8.34703319550816 34.5233787754707 3.74285785265516 -46.3498394199751 1482893.24094423 T K043/64 CATAB v2.0c-linF95 2014-May-12 11:32:02 2014-May-12 11:32
2126-Jan-22 12:15 00:13 Jupiter 1.60498444286806 1.60497843398095 1.60499045251654 2.58271247879492 2.36958092220276 2497587.010235931 13.1900892753757 59.9880870492965 8.70400611153479 -87.0283420146235 1187596.25523446 T K043/64 CATAB v2.0c-linF95 2014-May-12 11:32:02 2014-May-12 11:32
2167-Jul-31 15:14 00:07 Jupiter 1.41644795718016 1.41643627677683 1.41645963792291 2.32037547380594 2.04649974521825 2512752.134692938 7.11963334566785 50.670467871942 2.92357062574158 -58.7756974660525 2394585.29734267 T K043/64 CATAB v2.0c-linF95 2014-May-12 11:32:02 2014-May-12 11:32

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1989.8       1989 XV   
 1975.1       1974 II   
 1960.4       1957 IV   
 1945.6       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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