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JPL Small-Body Database Browser
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160925 (2001 XA157)
Classification: Main-belt Asteroid          SPK-ID: 2160925
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0607261745910988 4.8284e-08  
a 2.252758852724959 1.1465e-08 au
q 2.11595742532274 1.0732e-07 au
i 7.33397505870982 5.6944e-06 deg
node 340.104491062937 2.7489e-05 deg
peri 142.8776131038969 4.6133e-05 deg
M 131.965156468979 3.6994e-05 deg
tp 2458547.782522932116
(2019-Mar-05.28252293)
0.00012616 TDB
period 1235.010029202287
3.38
9.4277e-06
2.581e-08
d
yr
n .2914956085275921 2.2252e-09 deg/d
Q 2.389560280127178 1.2161e-08 au
  Orbit Determination Parameters
   # obs. used (total)      565  
   data-arc span      7379 days (20.20 yr)  
   first obs. used      1999-02-12  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5843  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:43:03  

Additional Information
 Earth MOID = 1.13537 au 
 Jupiter MOID = 2.63166 au 
 T_jup = 3.613 
[ 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 16.2   n/a MPO433028  

160925 (2001 XA157)          Discovered 2001-Dec-14 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

Alternate Designations
 2001 XA157 = 1999 DE4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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