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308625 (2005 XJ20)
Classification: Main-belt Asteroid          SPK-ID: 2308625
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2553954092610756 1.7411e-07  
a 2.548573258204418 1.9052e-08 au
q 1.897679347893467 4.5159e-07 au
i 3.567771004194602 8.0937e-06 deg
node 329.0152077057656 0.00027693 deg
peri 75.19778482273199 0.00039885 deg
M 220.6698997804714 0.00014626 deg
tp 2459575.657196708461
(2021-Dec-27.15719671)
0.00060766 TDB
period 1486.086570588892
4.07
1.6664e-05
4.562e-08
d
yr
n .2422469909389887 2.7163e-09 deg/d
Q 3.199467168515368 2.3917e-08 au
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      20930 days (57.30 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-01-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50344  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:18:40  

Additional Information
 Earth MOID = .910473 au 
 Jupiter MOID = 2.2324 au 
 T_jup = 3.392 
[ 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 17.5   n/a MPO281577  
diameter diameter 1.850 km 0.462 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

308625 (2005 XJ20)          Discovered 2005-Dec-02 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

Alternate Designations
 2005 XJ20 = 2001 YZ126 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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