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146771 (2001 XO220)
Classification: Main-belt Asteroid          SPK-ID: 2146771
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08965390672172931 5.4967e-08  
a 2.939181522239905 2.954e-08 au
q 2.675672416206778 1.7301e-07 au
i 8.401898373363247 5.5051e-06 deg
node 273.8814781805834 3.2978e-05 deg
peri 72.72538076425201 4.5313e-05 deg
M 310.9302393150704 3.3062e-05 deg
tp 2459251.370432797940
(2021-Feb-05.87043280)
0.00017112 TDB
period 1840.509400222031
5.04
2.7747e-05
7.597e-08
d
yr
n .1955980230019858 2.9488e-09 deg/d
Q 3.202690628273031 3.2188e-08 au
  Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      8676 days (23.75 yr)  
   first obs. used      1995-08-29  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56344  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:39:17  

Additional Information
 Earth MOID = 1.68316 au 
 Jupiter MOID = 2.15697 au 
 T_jup = 3.251 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO436736  

146771 (2001 XO220)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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