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103203 (1999 XM251)
Classification: Main-belt Asteroid          SPK-ID: 2103203
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2261969660331304 4.1504e-08  
a 2.265889563578471 8.6033e-09 au
q 1.753352218930887 9.4798e-08 au
i 2.969195021419656 4.9099e-06 deg
node 92.41187417880721 9.739e-05 deg
peri 245.8833010135972 9.8095e-05 deg
M 121.109442636499 1.1406e-05 deg
tp 2458781.386123471717
(2019-Oct-24.88612347)		 3.868e-05 TDB
period 1245.823548235127
3.41		 7.0953e-06
1.943e-08		 d
yr
n .2889654803121897 1.6457e-09 deg/d
Q 2.778426908226055 1.0549e-08 au
   Orbit Determination Parameters
   # obs. used (total)      405  
   data-arc span      7721 days (21.14 yr)  
   first obs. used      1999-11-29  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55806  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:40  

Additional Information
 Earth MOID = .74496 au 
 Jupiter MOID = 2.6136 au 
 T_jup = 3.580 
[ 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 17.0   n/a MPO502732  

103203 (1999 XM251)          Discovered 1999-Dec-09 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XM251 = 2002 NW28 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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