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21457 Fevig (1998 HD51)
Classification: Main-belt Asteroid          SPK-ID: 2021457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1894109761941979 3.5054e-08  
a 2.34037154037827 6.8272e-09 au
q 1.897079482258103 8.1965e-08 au
i .2398382410129712 3.5723e-06 deg
node 59.66362658548236 0.00099443 deg
peri 57.09381887830402 0.0009945 deg
M 30.8122095643387 1.0076e-05 deg
tp 2458488.570134584360
(2019-Jan-05.07013458)
3.6593e-05 TDB
period 1307.752742155383
3.58
5.7224e-06
1.567e-08
d
yr
n .2752813956303875 1.2046e-09 deg/d
Q 2.783663598498437 8.1204e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1293  
   data-arc span      9127 days (24.99 yr)  
   first obs. used      1994-05-02  
   last obs. used      2019-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5038  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:56:13  

Additional Information
 Earth MOID = .913666 au 
 Jupiter MOID = 2.31168 au 
 T_jup = 3.540 
[ 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 15.4   n/a MPO381435  

21457 Fevig           Discovered 1998 Apr. 25 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Ronald A. Fevig (b. 1964), of the University of North Dakota, works on the spectroscopy of minor planets and comets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18

[ show close-approach data ]
Alternate Designations
 1998 HD51 = 2000 XK54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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