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49970 (1999 XD249)
Classification: Main-belt Asteroid          SPK-ID: 2049970
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07317407972549077 4.1866e-08  
a 2.311319109734504 1.0172e-08 au
q 2.142190460927742 9.7577e-08 au
i 4.387794581056449 4.338e-06 deg
node 139.1754618406777 6.6527e-05 deg
peri 292.6912106264111 7.4926e-05 deg
M 305.0435317578925 3.3768e-05 deg
tp 2459196.431654720257
(2020-Dec-12.93165472)
0.00012035 TDB
period 1283.477595185936
3.51
8.4731e-06
2.32e-08
d
yr
n .2804879503547915 1.8517e-09 deg/d
Q 2.480447758541267 1.0917e-08 au
  Orbit Determination Parameters
   # obs. used (total)      854  
   data-arc span      9637 days (26.38 yr)  
   first obs. used      1994-06-11  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57173  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:29:52  

Additional Information
 Earth MOID = 1.16143 au 
 Jupiter MOID = 2.67953 au 
 T_jup = 3.577 
[ 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 15.8   n/a MPO436133  

49970 (1999 XD249)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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