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JPL Small-Body Database Browser
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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2211443031585522 5.1113e-08  
a 2.542793824878797 1.0849e-08 au
q 1.980469456400106 1.3224e-07 au
i 3.715912696976904 4.8028e-06 deg
node 73.95346063651293 8.2791e-05 deg
peri 268.6563130042456 8.3569e-05 deg
M 124.0286212406215 1.343e-05 deg
tp 2458090.248178029532
(2017-Dec-02.74817803)
5.3395e-05 TDB
period 1481.034410218911
4.05
9.4785e-06
2.595e-08
d
yr
n .2430733529998054 1.5556e-09 deg/d
Q 3.105118193357488 1.3248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      742  
   data-arc span      13644 days (37.36 yr)  
   first obs. used      1981-09-24  
   last obs. used      2019-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5639  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:05:20  

Additional Information
 Earth MOID = .975881 au 
 Jupiter MOID = 2.30707 au 
 T_jup = 3.407 
[ 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 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

[ show close-approach data ]
Alternate Designations
 1989 SJ1 = 1981 SL8 = 1981 UG25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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