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JPL Small-Body Database Browser
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245220 (2004 XY21)
Classification: Main-belt Asteroid          SPK-ID: 2245220
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .157224337802498 5.3084e-08  
a 2.485219132920417 1.9728e-08 au
q 2.094482200452906 1.4082e-07 au
i 5.65518678557217 5.2956e-06 deg
node 256.0592539254861 6.3889e-05 deg
peri 176.0311873282141 6.7135e-05 deg
M 346.78966714835 2.246e-05 deg
tp 2459053.011777492888
(2020-Jul-22.51177749)
8.9508e-05 TDB
period 1431.019196089258
3.92
1.704e-05
4.665e-08
d
yr
n .2515689523829039 2.9955e-09 deg/d
Q 2.875956065387927 2.283e-08 au
  Orbit Determination Parameters
   # obs. used (total)      232  
   data-arc span      6912 days (18.92 yr)  
   first obs. used      2000-11-21  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55007  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:24:59  

Additional Information
 Earth MOID = 1.10925 au 
 Jupiter MOID = 2.39406 au 
 T_jup = 3.452 
[ 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 16.6   n/a MPO450097  

245220 (2004 XY21)          Discovered 2004-Dec-08 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ show close-approach data ]
Alternate Designations
 2004 XY21 = 2000 WP89 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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