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90928 (1997 SS8)
Classification: Main-belt Asteroid          SPK-ID: 2090928
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1380888030462665 5.5295e-08  
a 2.241529033620226 8.834e-09 au
q 1.931998972374154 1.2383e-07 au
i 1.560734263392557 5.9312e-06 deg
node 155.0225499764805 0.00016058 deg
peri 28.00161955145862 0.00016116 deg
M 81.81815318685385 1.4071e-05 deg
tp 2458721.912163195342
(2019-Aug-26.41216320)
4.7391e-05 TDB
period 1225.786910890469
3.36
7.2463e-06
1.984e-08
d
yr
n .2936888922549181 1.7362e-09 deg/d
Q 2.551059094866298 1.0054e-08 au
  Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      9952 days (27.25 yr)  
   first obs. used      1991-12-07  
   last obs. used      2019-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63577  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:27:36  

Additional Information
 Earth MOID = .93449 au 
 Jupiter MOID = 2.40594 au 
 T_jup = 3.621 
[ 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 16.6   n/a MPO468894  

90928 (1997 SS8)          Discovered 1997-Sep-27 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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Alternate Designations
 1997 SS8 = 1996 GO = 2001 XY123 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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