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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05362616220371182 4.267e-08  
a 2.672292301787191 1.526e-08 au
q 2.528987521355821 1.1417e-07 au
i 15.36066652575772 6.2368e-06 deg
node 58.29618090485607 1.7739e-05 deg
peri 273.8968893912959 6.3478e-05 deg
M 290.7782349288232 6.3e-05 deg
tp 2459703.306485675635
(2022-May-03.80648568)
0.00027958 TDB
period 1595.601249544259
4.37
1.3667e-05
3.742e-08
d
yr
n .2256202795672318 1.9326e-09 deg/d
Q 2.815597082218562 1.6078e-08 au
  Orbit Determination Parameters
   # obs. used (total)      796  
   data-arc span      9011 days (24.67 yr)  
   first obs. used      1996-11-05  
   last obs. used      2021-07-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56133  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:59:24  

Additional Information
 Earth MOID = 1.57638 au 
 Jupiter MOID = 2.36408 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 15.07   n/a MPO636384  

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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