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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .101671710297211 4.3404e-08  
a 2.76288651946138 1.7811e-08 au
q 2.481979121670633 1.2076e-07 au
i 3.461287535237309 4.1053e-06 deg
node 284.0225472144871 8.3929e-05 deg
peri 22.00721664645146 8.728e-05 deg
M 23.54155759765506 2.3406e-05 deg
tp 2458490.807814038562
(2019-Jan-07.30781404)
0.00010896 TDB
period 1677.424562173028
4.59
1.622e-05
4.441e-08
d
yr
n .2146147183713801 2.0753e-09 deg/d
Q 3.043793917252127 1.9622e-08 au
  Orbit Determination Parameters
   # obs. used (total)      600  
   data-arc span      7068 days (19.35 yr)  
   first obs. used      2000-07-07  
   last obs. used      2019-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59039  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 13:01:22  

Additional Information
 Earth MOID = 1.46653 au 
 Jupiter MOID = 2.15612 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 15.5   n/a MPO302718  
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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