Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

:
Orbital Elements at Epoch 2455652.5 (2011-Apr-01.0) TDB
Reference: JPL K192/32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04474035465873583 2.1252e-08  
a 5.993436362578117 4.3605e-08 au
q 5.725287894091808 1.4823e-07 au
i 9.385875413460953 1.9653e-06 deg
node 312.6157476054258 1.0789e-05 deg
peri 49.80387323276378 2.4561e-05 deg
M 164.120222232087 2.1917e-05 deg
tp 2453209.227706876141
(2004-Jul-22.72770688)
0.00032922 TDB
period 5359.351904122778
14.67
5.8488e-05
1.601e-07
d
yr
n .06717230113646082 7.3307e-10 deg/d
Q 6.261584831064426 4.5556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      30438  
   data-arc span      8582 days (23.50 yr)  
   first obs. used      1997-03-04  
   last obs. used      2020-09-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70448  
   source      ORB  
   producer      Shantanu Naidu  
   solution date      2020-Sep-07 17:07:10  

Additional Information
 Earth MOID = 4.72805 au 
 Jupiter MOID = .735499 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 8.5   1. K192/32 2 parameter fit from 4853 observations, autocmod 2.8
comet total magnitude slope K1 4.5   n/a K192/32 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

[ 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 12:21 00:10 Jupiter 1.95040021994671 1.95039611668048 1.95040432326948 2.88138266762854 2.72650019258135 2426171.014585016 9.8500024110282 588.832929438548 36.1403210852415 76.0615606424358 3250913.3636762 T K192/32 CATAB v2.0f-lin.ifort 2020-Sep-07 17:22:03 2020-Sep-07 17:22
1974-May-21 21:29 00:02 Jupiter 1.00280198328454 1.00280009262979 1.00280387394181 2.8099163915019 2.49124838554948 2442189.395070056 1.86008424628569 149.927297646718 70.2066333788296 -61.7946073065091 2234341.61305021 T K192/32 CATAB v2.0f-lin.ifort 2020-Sep-07 17:22:03 2020-Sep-07 17:22
2037-Oct-11 14:27 00:01 Jupiter 0.902226660098729 0.902225429302439 0.902227890896506 2.52760623500674 2.1239506576616 2465343.102057832 1.24373402159507 97.1412825289861 35.1278074798195 -56.662426137313 3096801.50644327 T K192/32 CATAB v2.0f-lin.ifort 2020-Sep-07 17:22:03 2020-Sep-07 17:22
2084-May-18 16:11 00:19 Jupiter 1.47453513752506 1.47452466337552 1.47454561233199 2.0837713692623 1.78696276823128 2482364.174338286 19.1144747647125 1805.97434344976 59.2549921073482 63.2044909019679 3036954.15695998 T K192/32 CATAB v2.0f-lin.ifort 2020-Sep-07 17:22:03 2020-Sep-07 17:22
2126-Jan-22 12:04 00:17 Jupiter 1.60498104483632 1.60496847168979 1.60499361853983 2.58269846453026 2.36956517588571 2497587.002784091 16.5417035712986 1691.33941147916 52.5863081001863 -75.2888696014378 3296984.48131845 T K192/32 CATAB v2.0f-lin.ifort 2020-Sep-07 17:22:03 2020-Sep-07 17:22
2167-Jul-31 15:11 00:14 Jupiter 1.41644813347773 1.41643607248843 1.41646019451429 2.32037649841692 2.0465009433179 2512752.132645083 13.5630766954707 771.851288211341 55.9134735197136 -13.3616938157076 2514286.80056955 T K192/32 CATAB v2.0f-lin.ifort 2020-Sep-07 17:22:03 2020-Sep-07 17:22

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 
 1901.8   29P/1902 E1   1908 IV   
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-19 23:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin