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52281 (1989 SJ1)
Classification: Main-belt Asteroid          SPK-ID: 2052281
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221805589638036 4.8486e-08  
a 2.542369814213607 1.0423e-08 au
q 1.978457978494014 1.261e-07 au
i 3.715730165120973 3.9424e-06 deg
node 73.94506553092079 7.604e-05 deg
peri 268.6190054191229 7.6678e-05 deg
M 317.653131461731 1.3325e-05 deg
tp 2459570.670786110396
(2021-Dec-22.17078611)
5.5575e-05 TDB
period 1480.663982109539
4.05
9.1055e-06
2.493e-08
d
yr
n .2431341643680014 1.4952e-09 deg/d
Q 3.1062816499332 1.2735e-08 au
  Orbit Determination Parameters
   # obs. used (total)      841  
   data-arc span      14528 days (39.78 yr)  
   first obs. used      1981-09-24  
   last obs. used      2021-07-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55242  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:37:01  

Additional Information
 Earth MOID = .973966 au 
 Jupiter MOID = 2.30977 au 
 T_jup = 3.407 
[ 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 15.3   n/a MPO351203  

52281 (1989 SJ1)          Discovered 1989-Sep-26 by Elst, E. W. at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 SJ1 = 1981 SL8 = 1981 UG25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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