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49950 (1999 XJ207)
Classification: Main-belt Asteroid          SPK-ID: 2049950
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09222362692580824 2.5948e-08  
a 2.364680605942737 8.2355e-09 au
q 2.14660118394158 6.0883e-08 au
i 7.242864730336209 3.9384e-06 deg
node 44.1696917509266 2.8636e-05 deg
peri 225.5115881107298 3.8604e-05 deg
M 58.51321497640859 2.5173e-05 deg
tp 2458784.621883043248
(2019-Oct-28.12188304)
9.2898e-05 TDB
period 1328.180687657727
3.64
6.9385e-06
1.9e-08
d
yr
n .2710474586367214 1.416e-09 deg/d
Q 2.582760027943895 8.995e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1362  
   data-arc span      8068 days (22.09 yr)  
   first obs. used      1998-09-22  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51886  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:29:57  

Additional Information
 Earth MOID = 1.13795 au 
 Jupiter MOID = 2.4787 au 
 T_jup = 3.532 
[ 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 15.0   n/a MPO474381  

49950 (1999 XJ207)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XJ207 = 2001 HQ20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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