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85161 (1988 SA2)
Classification: Main-belt Asteroid          SPK-ID: 2085161
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .210841972000836 3.6574e-08  
a 2.213439847657572 1.0047e-08 au
q 1.74675382527222 8.2223e-08 au
i 6.399237670457254 4.8185e-06 deg
node 91.77998867733899 4.0417e-05 deg
peri 217.3668838510787 4.3072e-05 deg
M 252.2513942458028 1.7605e-05 deg
tp 2459360.505529574144
(2021-May-26.00552957)
6.0454e-05 TDB
period 1202.818261447836
3.29
8.1893e-06
2.242e-08
d
yr
n .2992970854688113 2.0377e-09 deg/d
Q 2.680125870042925 1.2165e-08 au
  Orbit Determination Parameters
   # obs. used (total)      539  
   data-arc span      11461 days (31.38 yr)  
   first obs. used      1988-09-15  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58739  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:27:31  

Additional Information
 Earth MOID = .736991 au 
 Jupiter MOID = 2.58231 au 
 T_jup = 3.618 
[ 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 16.3   n/a MPO453282  

85161 (1988 SA2)          Discovered 1988-Sep-16 by Bus, S. J. at Cerro Tololo
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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