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523909 (1997 SJ9)
Classification: Main-belt Asteroid          SPK-ID: 2523909
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1286957307882949 2.8643e-07  
a 2.930320564289249 7.8347e-08 au
q 2.553200817824075 8.9258e-07 au
i 17.10999535785632 2.1699e-05 deg
node 8.026752830423314 2.6533e-05 deg
peri 50.96582623577021 0.00079421 deg
M 152.8082204689418 0.00068432 deg
tp 2458222.794189756030
(2018-Apr-14.29418976)
0.0034549 TDB
period 1832.192606056386
5.02
7.348e-05
2.012e-07
d
yr
n .1964858928095254 7.8801e-09 deg/d
Q 3.307440310754422 8.843e-08 au
  Orbit Determination Parameters
   # obs. used (total)      70  
   data-arc span      7828 days (21.43 yr)  
   first obs. used      1997-09-27  
   last obs. used      2019-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .64716  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 18:43:49  

Additional Information
 Earth MOID = 1.59627 au 
 Jupiter MOID = 2.22023 au 
 T_jup = 3.198 
[ 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 17.3   n/a MPO423712  

523909 (1997 SJ9)          Discovered 1997-Sep-27 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29

Alternate Designations
 1997 SJ9 = 2007 RB49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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