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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07283988275516103 4.2077e-08  
a 2.312748835264651 1.2112e-08 au
q 2.144288481261838 9.7992e-08 au
i 4.38573510610977 4.9473e-06 deg
node 139.1914293484611 6.7236e-05 deg
peri 292.1800721122522 7.8452e-05 deg
M 193.3994107235289 4.1648e-05 deg
tp 2459195.018215664643
(2020-Dec-11.51821566)
0.00014994 TDB
period 1284.668671153964
3.52
1.0092e-05
2.763e-08
d
yr
n .2802278969538714 2.2014e-09 deg/d
Q 2.481209189267463 1.2994e-08 au
  Orbit Determination Parameters
   # obs. used (total)      782  
   data-arc span      9201 days (25.19 yr)  
   first obs. used      1994-06-11  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58422  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:17:30  

Additional Information
 Earth MOID = 1.16325 au 
 Jupiter MOID = 2.68114 au 
 T_jup = 3.576 
[ 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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