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49888 (1999 XQ156)
Classification: Main-belt Asteroid          SPK-ID: 2049888
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 .1255469629327697 3.1139e-08  
a 2.281622654603803 9.1384e-09 au
q 1.995171859759691 6.8651e-08 au
i 6.936714294666173 3.88e-06 deg
node 228.2077079849937 2.7481e-05 deg
peri 51.7576385101238 3.2685e-05 deg
M 136.0797870569027 1.6605e-05 deg
tp 2458524.666211459162
(2019-Feb-10.16621146)
5.7673e-05 TDB
period 1258.821516255543
3.45
7.5628e-06
2.071e-08
d
yr
n .2859817657636219 1.7181e-09 deg/d
Q 2.568073449447914 1.0286e-08 au
  Orbit Determination Parameters
   # obs. used (total)      946  
   data-arc span      8155 days (22.33 yr)  
   first obs. used      1998-06-25  
   last obs. used      2020-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55262  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:20  

Additional Information
 Earth MOID = .98757 au 
 Jupiter MOID = 2.53958 au 
 T_jup = 3.585 
[ 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 15.6   n/a MPO502488  

49888 (1999 XQ156)          Discovered 1999-Dec-08 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XQ156 = 2001 FN164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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