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101516 (1998 XW28)
Classification: Main-belt Asteroid          SPK-ID: 2101516
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1228384374481889 5.2818e-08  
a 3.051184806357948 1.8256e-08 au
q 2.676382032379283 1.6038e-07 au
i 2.791707787048816 5.5003e-06 deg
node 239.0281193247199 8.6895e-05 deg
peri 134.8810730134934 8.8999e-05 deg
M 52.08885783767592 1.8245e-05 deg
tp 2458718.828095371492
(2019-Aug-23.32809537)
9.8414e-05 TDB
period 1946.70971635164
5.33
1.7471e-05
4.783e-08
d
yr
n .184927417260074 1.6597e-09 deg/d
Q 3.425987580336614 2.0498e-08 au
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      8030 days (21.98 yr)  
   first obs. used      1998-11-20  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51698  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:29:22  

Additional Information
 Earth MOID = 1.67809 au 
 Jupiter MOID = 2.05025 au 
 T_jup = 3.223 
[ 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 14.8   n/a MPO502726  

101516 (1998 XW28)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 XW28 = 2003 SP110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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