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JPL Small-Body Database Browser
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528381 (2008 ST291)
Classification: TransNeptunian Object          SPK-ID: 2528381
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5764590794976105 0.00012625  
a 99.885278038393 0.023362 au
q 42.30550260501808 0.0043305 au
i 20.75800371362422 0.0001603 deg
node 330.9707893901831 0.00040864 deg
peri 324.6515438455514 0.0065339 deg
M 23.34892344015343 0.0095868 deg
tp 2434951.378555320487
(1954-Jul-27.87855532)
1.4188 TDB
period 364628.53381255
998.30
127.93
0.3503
d
yr
n .0009873061667331569 3.4638e-07 deg/d
Q 157.4650534717679 0.03683 au
  Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      3385 days (9.27 yr)  
   first obs. used      2008-09-24  
   last obs. used      2017-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      3  
   norm. resid. RMS      .50875  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 11:03:14  

Additional Information
 Earth MOID = 41.311 au 
 Jupiter MOID = 37.2831 au 
 T_jup = 6.748 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 4.4   n/a E2018X68  

528381 (2008 ST291)          Discovered 2008-Sep-24 by Schwamb, M. E., Brown, M. E., Rabinowitz, D. L. at Palomar
Reference: Last Updated: 2019-05-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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