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3779 Kieffer (1985 JV1)
Classification: Main-belt Asteroid          SPK-ID: 2003779
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1103899288977978 3.3145e-08  
a 2.63864724665384 1.1786e-08 au
q 2.347367164709353 8.8237e-08 au
i 13.88602204904954 5.3508e-06 deg
node 59.22493222979624 1.5428e-05 deg
peri 72.18680854000563 2.9453e-05 deg
M 151.4915791733525 2.5215e-05 deg
tp 2458341.695706868812
0.00010848 TDB
period 1565.562566720844
n .2299492895732935 1.5407e-09 deg/d
Q 2.929927328598328 1.3088e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2176  
   data-arc span      29105 days (79.69 yr)  
   first obs. used      1940-11-29  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:07:39  

Additional Information
 Earth MOID = 1.40486 au 
 Jupiter MOID = 2.25392 au 
 T_jup = 3.346 
[ 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
absolute magnitude H 11.6   n/a MPO473818  
diameter diameter 14.660 km 0.311 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 2.848 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Tollefson, E.R.; Gross, J. (2002) Minor Planet Bull. 29, 72.]
[Behrend, R. (2017) Observatoire de Geneve web site,]
geometric albedo albedo 0.252   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

3779 Kieffer (1985 JV1)          Discovered 1985-May-13 by Shoemaker, C. and Shoemaker, E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
2000-Aug-21 20:01 < 00:01 Psych 0.0211742435425155 0.021173290990369 0.0211751961085189 5.85570530260186 5.85570520502068 2451778.333790162 0.442060112258554 85.7760821899564 43.9583449906971 -75.8972800537902 70432.4357389038 T 31 CATAB v2.0f-lin.ifort 2020-Aug-24 23:07:49 2020-Aug-24 23:07

Alternate Designations
 1985 JV1 = 1940 WD = 1959 GK = 1978 TH = 1987 WW5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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