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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5784165537825664 0.00012633  
a 100.577954387493 0.0237 au
q 42.40200062417913 0.0043292 au
i 20.73526132141444 0.00015986 deg
node 330.9038690075591 0.00040869 deg
peri 325.068383889233 0.0065535 deg
M 23.41869853717257 0.0096336 deg
tp 2435033.543930215597
(1954-Oct-18.04393022)
1.3926 TDB
period 368427.9966039517
1008.70
130.22
0.3565
d
yr
n .0009771244403746777 3.4538e-07 deg/d
Q 158.7539081508068 0.037409 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 = 41.4077 au 
 Jupiter MOID = 37.3789 au 
 T_jup = 6.760 
[ 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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