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469421 (2001 XD255)
Classification: TransNeptunian Object          SPK-ID: 2469421
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .110473576976122 8.8198e-06  
a 39.20173957125575 0.00072199 au
q 34.87098317713274 0.00068919 au
i 18.14686945261525 4.3916e-05 deg
node 106.7473821099008 5.0374e-05 deg
peri 112.835490319378 0.0071803 deg
M 285.1972037523697 0.0071297 deg
tp 2477628.737558883651
(2071-Jun-01.23755888)
1.2639 TDB
period 89651.26783493142
245.45
2.4767
0.006781
d
yr
n .004015559497305077 1.1093e-07 deg/d
Q 43.53249596537876 0.00080175 au
  Orbit Determination Parameters
   # obs. used (total)      293  
   data-arc span      6735 days (18.44 yr)  
   first obs. used      2001-12-09  
   last obs. used      2020-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .58844  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 04:20:31  

Additional Information
 Earth MOID = 33.9064 au 
 Jupiter MOID = 29.6724 au 
 T_jup = 5.317 
[ 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 5.6   n/a MPO382875  

469421 (2001 XD255)          Discovered 2001-Dec-09 by Sheppard, S. S., Jewitt, D. C., Kleyna, J. at Mauna Kea
Reference: Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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