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JPL Small-Body Database Browser
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249122 (2007 XU21)
Classification: Main-belt Asteroid          SPK-ID: 2249122
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204795704308966 4.875e-08  
a 2.601079538540191 2.4058e-08 au
q 2.287702593080274 1.3305e-07 au
i 3.237883535607116 4.3432e-06 deg
node 270.0007548915628 9.4362e-05 deg
peri 274.491998742791 9.6151e-05 deg
M 159.7751378095136 2.1762e-05 deg
tp 2457920.458250489597
(2017-Jun-15.95825049)		 8.9433e-05 TDB
period 1532.247339480424
4.20		 2.1258e-05
5.82e-08		 d
yr
n .2349490129459607 3.2596e-09 deg/d
Q 2.914456484000107 2.6956e-08 au
   Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      9119 days (24.97 yr)  
   first obs. used      1994-11-10  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50046  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:44:08  

Additional Information
 Earth MOID = 1.29274 au 
 Jupiter MOID = 2.06485 au 
 T_jup = 3.402 
[ 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 16.0   n/a MPO454845  

249122 (2007 XU21)          Discovered 2007-Dec-10 by LINEAR at Socorro
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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