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JPL Small-Body Database Browser
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390529 (1997 ST12)
Classification: Main-belt Asteroid          SPK-ID: 2390529
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1846006560865484 1.277e-07  
a 2.423266112983293 1.5336e-08 au
q 1.975929598654277 3.0906e-07 au
i .827597260794999 1.3785e-05 deg
node 221.6582569016295 0.00082674 deg
peri 184.2225785929407 0.00082791 deg
M 224.535340434617 4.0925e-05 deg
tp 2459118.969961443597
(2020-Sep-26.46996144)
0.00015736 TDB
period 1377.844130849547
3.77
1.308e-05
3.581e-08
d
yr
n .2612777395785925 2.4803e-09 deg/d
Q 2.870602627312308 1.8167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      80  
   data-arc span      7476 days (20.47 yr)  
   first obs. used      1997-09-28  
   last obs. used      2018-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66585  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:22:47  

Additional Information
 Earth MOID = .98488 au 
 Jupiter MOID = 2.51659 au 
 T_jup = 3.489 
[ 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 18.1   n/a MPO440685  

390529 (1997 ST12)          Discovered 1997-Sep-28 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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