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21290 Vydra (1996 VR1)
Classification: Main-belt Asteroid          SPK-ID: 2021290
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05333158782388346 4.7053e-08  
a 2.672793955679002 1.7188e-08 au
q 2.530249610096562 1.2384e-07 au
i 15.35964709678736 6.8992e-06 deg
node 58.30078731469899 1.8917e-05 deg
peri 273.7811020476865 7.0169e-05 deg
M 201.5323780812768 6.9632e-05 deg
tp 2459703.062050824521
(2022-May-03.56205082)
0.00030968 TDB
period 1596.050570043573
4.37
1.5395e-05
4.215e-08
d
yr
n .2255567628976642 2.1757e-09 deg/d
Q 2.815338301261441 1.8104e-08 au
  Orbit Determination Parameters
   # obs. used (total)      671  
   data-arc span      8489 days (23.24 yr)  
   first obs. used      1996-11-05  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57899  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:21:51  

Additional Information
 Earth MOID = 1.57818 au 
 Jupiter MOID = 2.36541 au 
 T_jup = 3.327 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0   n/a MPO381434  

21290 Vydra           Discovered 1996 Nov. 9 by M. Tichy and Z. Moravec at Klet.
The Vydra river, headstream of the Otava river, is the wild Šumava mountain river with a stony bed that runs through the Povydří reserve (Vydra Valley).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030910/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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