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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2373558207051764 4.1908e-08  
a 2.266107518974653 6.3211e-09 au
q 1.728233709002253 9.6004e-08 au
i .3588652036793086 4.1167e-06 deg
node 331.041791714157 0.00055028 deg
peri 16.13894068184383 0.00055032 deg
M 197.2729689120208 7.0076e-06 deg
tp 2459763.717829653260
(2022-Jul-03.21782965)
2.5415e-05 TDB
period 1246.00330577869
3.41
5.2134e-06
1.427e-08
d
yr
n .2889237920400364 1.2089e-09 deg/d
Q 2.803981328947053 7.8214e-09 au
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      10513 days (28.78 yr)  
   first obs. used      1991-08-02  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51841  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:48:40  

Additional Information
 Earth MOID = .719637 au 
 Jupiter MOID = 2.61941 au 
 T_jup = 3.578 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456926.5 (2014-Sep-26.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2383611501685422 4.2028e-08  
q 1.725492345556505 9.6366e-08 au
tp 2457270.962419498451
(2015-Sep-05.46241950)
2.1486e-05 TDB
node 331.4054809305092 0.00054632 deg
peri 15.69568553811803 0.00054636 deg
i .3608237884252105 4.1244e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      976  
   data-arc span      10513 days (28.78 yr)  
   first obs. used      1991-08-02  
   last obs. used      2020-05-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51841  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:48:40  

Additional Information
 Jupiter MOID = 2.61941 au 
 T_jup = 3.578 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.766313215496998E-15 -4.045194872983356E-15 5.121780405970412E-14 2.153831684704505E-14 -3.104264040308477E-14 -2.541625280775501E-16
q -4.045194872983356E-15 9.286313634094752E-15 -1.012646972862593E-13 -5.112368361756813E-14 7.484135153863622E-14 5.913963791924404E-16
tp 5.121780405970412E-14 -1.012646972862593E-13 4.616621524260572E-10 4.526952779122632E-13 1.519918572047136E-10 2.804203447775887E-15
node 2.153831684704505E-14 -5.112368361756813E-14 4.526952779122632E-13 2.984626771855228E-7 -2.984557255132171E-7 5.438574327930031E-10
peri -3.104264040308477E-14 7.484135153863622E-14 1.519918572047136E-10 -2.984557255132171E-7 2.985072976903057E-7 -5.438484901279365E-10
i -2.541625280775501E-16 5.913963791924404E-16 2.804203447775887E-15 5.438574327930031E-10 -5.438484901279365E-10 1.701038639084736E-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 15.95   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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