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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1889904830722148 3.5197e-08  
a 2.34123474394874 6.8604e-09 au
q 1.898763658704415 8.2299e-08 au
i .239963569565673 3.3083e-06 deg
node 59.90355410754309 0.00096436 deg
peri 57.48193709455997 0.00096443 deg
M 249.0130344620353 9.4472e-06 deg
tp 2459799.899489592544
(2022-Aug-08.39948959)
3.4307e-05 TDB
period 1308.47632016428
3.58
5.7512e-06
1.575e-08
d
yr
n .2751291669953964 1.2093e-09 deg/d
Q 2.783705829193066 8.1569e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1331  
   data-arc span      9193 days (25.17 yr)  
   first obs. used      1994-05-02  
   last obs. used      2019-07-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49564  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:45:52  

Additional Information
 Earth MOID = .915433 au 
 Jupiter MOID = 2.30755 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 15.47   n/a MPCxxxxx  

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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