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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5789577267350223 7.094e-05  
a 100.8724924592254 0.014955 au
q 42.47158353493658 0.0033307 au
i 20.72800599272913 0.00013473 deg
node 330.8820618980277 0.0003499 deg
peri 325.296576041467 0.006077 deg
M 23.47330343374546 0.0060712 deg
tp 2435072.058727597836
(1954-Nov-25.55872760)
0.88152 TDB
period 370047.5684039151
1013.14
82.291
0.2253
d
yr
n .0009728479004814106 2.1634e-07 deg/d
Q 159.2734013835142 0.023613 au
  Orbit Determination Parameters
   # obs. used (total)      93  
   data-arc span      4346 days (11.90 yr)  
   first obs. used      2008-09-24  
   last obs. used      2020-08-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .50709  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 19:39:27  

Additional Information
 Earth MOID = 41.4751 au 
 Jupiter MOID = 37.4478 au 
 T_jup = 6.767 
[ 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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