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21349 Bevoke (1997 ER31)
Classification: Main-belt Asteroid          SPK-ID: 2021349
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1734508197215194 3.5171e-08  
a 3.197446994554646 2.0414e-08 au
q 2.642847192333034 1.1775e-07 au
i .9329545415611691 4.3203e-06 deg
node 23.47921489824709 0.00023979 deg
peri 273.0109502309662 0.00024015 deg
M 309.9296512386358 1.512e-05 deg
tp 2459490.956816568687
(2021-Oct-03.45681657)
8.9218e-05 TDB
period 2088.35082142292
5.72
1.9999e-05
5.475e-08
d
yr
n .1723848293624871 1.6508e-09 deg/d
Q 3.752046796776257 2.3954e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1369  
   data-arc span      9779 days (26.77 yr)  
   first obs. used      1993-09-15  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:43:47  

Additional Information
 Earth MOID = 1.62518 au 
 Jupiter MOID = 1.46248 au 
 T_jup = 3.171 
[ 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 13.97   n/a E2021B10  
diameter diameter 6.664 km 0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21349 Bevoke           Discovered 1997 Mar. 10 by Spacewatch at Kitt Peak.
John Beverly "Bev" Oke (1928-2004) did his PhD at Princeton University and had an outstanding career in spectroscopy and instrument design for large telescopes. Name suggested by R. and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-06-20Last Updated: 2016-08-22

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Alternate Designations
 1997 ER31 = 1993 RV18 = 1999 RB38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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