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259688 (2003 XN21)
Classification: Main-belt Asteroid          SPK-ID: 2259688
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569326363318778 5.9452e-08  
a 2.311271432974126 1.2218e-08 au
q 1.94855751371894 1.434e-07 au
i 4.215739534870787 4.9186e-06 deg
node 46.2620608474247 8.2607e-05 deg
peri 8.40207601539672 8.54e-05 deg
M 332.5306366419588 2.4434e-05 deg
tp 2459298.431170985372
(2021-Mar-24.93117099)
8.7458e-05 TDB
period 1283.437882968394
3.51
1.0177e-05
2.786e-08
d
yr
n .2804966292309959 2.2241e-09 deg/d
Q 2.673985352229312 1.4135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      215  
   data-arc span      7739 days (21.19 yr)  
   first obs. used      1999-10-08  
   last obs. used      2020-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55236  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 14:02:26  

Additional Information
 Earth MOID = .959279 au 
 Jupiter MOID = 2.66912 au 
 T_jup = 3.564 
[ 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 MPO433692  

259688 (2003 XN21)          Discovered 2003-Dec-14 by Spacewatch at Kitt Peak
Reference: 20110119/Numbers.arcLast Updated: 2011-01-25
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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