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JPL Small-Body Database Browser
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71117 (1999 XW157)
Classification: Main-belt Asteroid          SPK-ID: 2071117
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .147310514690547 4.8134e-08  
a 2.572217602793851 1.4567e-08 au
q 2.193302903830204 1.2702e-07 au
i 14.32230080123817 5.0336e-06 deg
node 97.34892730696045 2.0688e-05 deg
peri 308.7219431148113 2.6487e-05 deg
M 279.4121331203576 1.9146e-05 deg
tp 2458937.808391341925
(2020-Mar-29.30839134)
8.1424e-05 TDB
period 1506.815176836108
4.13
1.28e-05
3.504e-08
d
yr
n .2389145036061421 2.0295e-09 deg/d
Q 2.951132301757499 1.6713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      988  
   data-arc span      7268 days (19.90 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55432  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:39:41  

Additional Information
 Earth MOID = 1.23319 au 
 Jupiter MOID = 2.43316 au 
 T_jup = 3.371 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO449449  

71117 (1999 XW157)          Discovered 1999-Dec-08 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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