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120920 (1998 SY85)
Classification: Main-belt Asteroid          SPK-ID: 2120920
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2115663753325896 4.6765e-08  
a 2.163362911165021 6.1352e-09 au
q 1.705668061520879 1.019e-07 au
i 2.073476667426521 5.3097e-06 deg
node 22.82270376773983 9.8266e-05 deg
peri 355.789182555379 9.8766e-05 deg
M 283.9339139942736 9.0784e-06 deg
tp 2459246.073254612452
(2021-Jan-31.57325461)
2.9735e-05 TDB
period 1162.231111165985
3.18
4.9441e-06
1.354e-08
d
yr
n .3097490650020865 1.3177e-09 deg/d
Q 2.621057760809164 7.4332e-09 au
  Orbit Determination Parameters
   # obs. used (total)      528  
   data-arc span      7525 days (20.60 yr)  
   first obs. used      1998-09-17  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59688  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:07:17  

Additional Information
 Earth MOID = .707741 au 
 Jupiter MOID = 2.84058 au 
 T_jup = 3.665 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO436584  

120920 (1998 SY85)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 SY85 = 1998 TH35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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