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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2112743394690793 3.8742e-08  
a 2.16273154452459 5.9128e-09 au
q 1.705801866006216 8.5452e-08 au
i 2.073602755327505 4.1782e-06 deg
node 22.80307544196102 9.7103e-05 deg
peri 355.833234722233 9.7582e-05 deg
M 345.8518373058029 9.1353e-06 deg
tp 2459246.156213813872
(2021-Jan-31.65621381)		 2.9561e-05 TDB
period 1161.72236128832
3.18		 4.7641e-06
1.304e-08		 d
yr
n .3098847125579724 1.2708e-09 deg/d
Q 2.619661223042965 7.162e-09 au
   Orbit Determination Parameters
   # obs. used (total)      575  
   data-arc span      8117 days (22.22 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57551  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:26:12  

Additional Information
 Earth MOID = .706507 au 
 Jupiter MOID = 2.84312 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 17.21   n/a E2021B55  

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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