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58992 (1998 SH8)
Classification: Main-belt Asteroid          SPK-ID: 2058992
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2373558224756115 4.1343e-08  
a 2.266107522575509 6.2925e-09 au
q 1.728233707736428 9.4811e-08 au
i .358865282815911 4.0739e-06 deg
node 331.0417726572298 0.00054544 deg
peri 16.13895973313559 0.00054548 deg
M 197.2729683061036 6.9653e-06 deg
tp 2459763.717833092846
(2022-Jul-03.21783309)
2.5298e-05 TDB
period 1246.003308748547
3.41
5.1898e-06
1.421e-08
d
yr
n .2889237913513845 1.2034e-09 deg/d
Q 2.803981337414589 7.7861e-09 au
  Orbit Determination Parameters
   # obs. used (total)      984  
   data-arc span      10818 days (29.62 yr)  
   first obs. used      1991-08-02  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51697  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:34:05  

Additional Information
 Earth MOID = .719637 au 
 Jupiter MOID = 2.61941 au 
 T_jup = 3.578 
[ 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 15.95   n/a E2021B10  

58992 (1998 SH8)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SH8 = 1991 PZ23 = 2000 DO49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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