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91197 (1998 SD115)
Classification: Main-belt Asteroid          SPK-ID: 2091197
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1021509232830433 4.1389e-08  
a 3.155945567176486 3.0235e-08 au
q 2.83356281365838 1.3364e-07 au
i 11.64811605712645 5.2781e-06 deg
node 194.7404416565976 2.2418e-05 deg
peri 216.6887187888275 3.387e-05 deg
M 282.5100499694977 2.4837e-05 deg
tp 2459441.293886946439
(2021-Aug-14.79388695)
0.00014145 TDB
period 2047.82425641331
5.61
2.9428e-05
8.057e-08
d
yr
n .1757963354875613 2.5263e-09 deg/d
Q 3.478328320694592 3.3323e-08 au
  Orbit Determination Parameters
   # obs. used (total)      625  
   data-arc span      7976 days (21.84 yr)  
   first obs. used      1998-09-26  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56666  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:16:16  

Additional Information
 Earth MOID = 1.85231 au 
 Jupiter MOID = 1.97611 au 
 T_jup = 3.166 
[ 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 14.6   n/a MPO436410  

91197 (1998 SD115)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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