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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2371887216590285 4.2049e-08  
a 2.266384939627602 6.3271e-09 au
q 1.728823993010057 9.6363e-08 au
i .3589020769948316 4.1231e-06 deg
node 331.0415817610358 0.00055401 deg
peri 16.12951724790912 0.00055406 deg
M 139.512644449679 6.9156e-06 deg
tp 2458517.541281704130
(2019-Feb-03.04128170)
2.3155e-05 TDB
period 1246.232119478065
3.41
5.2187e-06
1.429e-08
d
yr
n .2888707443608272 1.2097e-09 deg/d
Q 2.803945886245147 7.8278e-09 au
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      10488 days (28.71 yr)  
   first obs. used      1991-08-02  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51866  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:42:08  

Additional Information
 Earth MOID = .722012 au 
 Jupiter MOID = 2.61882 au 
 T_jup = 3.578 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456880.5 (2014-Aug-11.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2383699618430469 4.217e-08  
q 1.725418500585799 9.6705e-08 au
tp 2457270.975738980043
(2015-Sep-05.47573898)
2.1552e-05 TDB
node 331.4043785565271 0.00055009 deg
peri 15.70446845195722 0.00055014 deg
i .3608206965240638 4.1314e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      10488 days (28.71 yr)  
   first obs. used      1991-08-02  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51866  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:42:08  

Additional Information
 Jupiter MOID = 2.61882 au 
 T_jup = 3.578 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.778276540306243E-15 -4.073170380531335E-15 5.709364122964087E-14 2.214236154045685E-14 -2.89407350782706E-14 -2.549306621813381E-16
q -4.073170380531335E-15 9.351762958017344E-15 -1.151793098154196E-13 -5.254504265122467E-14 6.984724413444201E-14 5.930780933003159E-16
tp 5.709364122964087E-14 -1.151793098154196E-13 4.644719794377635E-10 4.417113385049682E-13 1.533253165130216E-10 1.348907699076699E-15
node 2.214236154045685E-14 -5.254504265122467E-14 4.417113385049682E-13 3.026042799723124E-7 -3.025972377451947E-7 5.594314704659789E-10
peri -2.89407350782706E-14 6.984724413444201E-14 1.533253165130216E-10 -3.025972377451947E-7 3.026493398714106E-7 -5.594228404510296E-10
i -2.549306621813381E-16 5.930780933003159E-16 1.348907699076699E-15 5.594314704659789E-10 -5.594228404510296E-10 1.706874643923554E-11

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 15.9   n/a MPO449379  

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

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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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