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146773 (2001 XO221)
Classification: Main-belt Asteroid          SPK-ID: 2146773
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1016235644035013 4.2719e-08  
a 2.764263789123901 1.6206e-08 au
q 2.483349449921602 1.1784e-07 au
i 3.461110198265331 3.9853e-06 deg
node 284.0216354106749 7.0154e-05 deg
peri 22.30909681226671 7.3044e-05 deg
M 151.9606216803419 2.1441e-05 deg
tp 2458491.908049113228
(2019-Jan-08.40804911)
9.7888e-05 TDB
period 1678.678986032587
4.60
1.4763e-05
4.042e-08
d
yr
n .2144543435614387 1.886e-09 deg/d
Q 3.045178128326201 1.7853e-08 au
  Orbit Determination Parameters
   # obs. used (total)      701  
   data-arc span      7559 days (20.70 yr)  
   first obs. used      2000-07-07  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56437  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:35:24  

Additional Information
 Earth MOID = 1.46674 au 
 Jupiter MOID = 2.15632 au 
 T_jup = 3.330 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.49   n/a MPCxxxxx  
diameter diameter 4.407 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.083   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146773 (2001 XO221)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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