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91198 (1998 SS137)
Classification: Outer Main-belt Asteroid          SPK-ID: 2091198
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1254842136410544 6.4069e-08  
a 3.229190610080665 3.105e-08 au
q 2.823978165677616 2.1162e-07 au
i 4.874585277491867 5.7244e-06 deg
node 86.57877543679763 7.6998e-05 deg
peri 310.6410839185164 7.9661e-05 deg
M 259.7754455384937 2.433e-05 deg
tp 2459590.579574479272
(2022-Jan-11.07957448)
0.00014823 TDB
period 2119.526975738531
5.80
3.0571e-05
8.37e-08
d
yr
n .1698492183023814 2.4498e-09 deg/d
Q 3.634403054483714 3.4947e-08 au
  Orbit Determination Parameters
   # obs. used (total)      522  
   data-arc span      8443 days (23.12 yr)  
   first obs. used      1996-05-13  
   last obs. used      2019-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:25:09  

Additional Information
 Earth MOID = 1.83465 au 
 Jupiter MOID = 1.78076 au 
 T_jup = 3.169 
[ 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 14.5   n/a MPO439642  

91198 (1998 SS137)          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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