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JPL Small-Body Database Browser
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469674 (2004 XK21)
Classification: Main-belt Asteroid          SPK-ID: 2469674
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2969576437328703 2.6055e-07  
a 2.576170316114427 7.1919e-08 au
q 1.811156849186523 7.1891e-07 au
i 4.476779045868013 7.2914e-06 deg
node 248.9438765972094 0.00017117 deg
peri 132.7414541214269 0.00017875 deg
M 201.8809739593333 6.3183e-05 deg
tp 2459263.848748827894
(2021-Feb-18.34874883)
0.00029203 TDB
period 1510.289783321986
4.13
6.3244e-05
1.732e-07
d
yr
n .2383648515506443 9.9817e-09 deg/d
Q 3.341183783042331 9.3276e-08 au
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      4797 days (13.13 yr)  
   first obs. used      2004-12-02  
   last obs. used      2018-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61042  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-06 09:57:05  

Additional Information
 Earth MOID = .817355 au 
 Jupiter MOID = 2.13933 au 
 T_jup = 3.359 
[ 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 17.3   n/a MPO437769  

469674 (2004 XK21)          Discovered 2004-Dec-08 by LINEAR at Socorro
Reference: Last Updated: 2016-08-22

Alternate Designations
 2004 XK21 = 2008 US203 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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