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58998 (1998 SK21)
Classification: Main-belt Asteroid          SPK-ID: 2058998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1618663847438512 3.9557e-08  
a 2.75024071529913 1.5188e-08 au
q 2.305069193538317 1.1096e-07 au
i 13.01659957986251 5.3635e-06 deg
node 187.8966942248433 1.9687e-05 deg
peri 91.24947942526713 2.6014e-05 deg
M 346.4742844264213 1.7408e-05 deg
tp 2459063.091050049064
(2020-Aug-01.59105005)
8.0645e-05 TDB
period 1665.921325573253
4.56
1.38e-05
3.778e-08
d
yr
n .2160966394233065 1.79e-09 deg/d
Q 3.195412237059944 1.7646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      749  
   data-arc span      8533 days (23.36 yr)  
   first obs. used      1997-04-13  
   last obs. used      2020-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56845  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:48:38  

Additional Information
 Earth MOID = 1.33446 au 
 Jupiter MOID = 2.06402 au 
 T_jup = 3.290 
[ 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 14.9   n/a MPO468491  

58998 (1998 SK21)          Discovered 1998-Sep-21 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SK21 = 2001 FZ37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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