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376764 (1999 XS16)
Classification: Mars-crossing Asteroid          SPK-ID: 2376764
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5358472964588529 6.5346e-08  
a 2.940636743864764 2.0625e-08 au
q 1.364904494797266 1.9441e-07 au
i 10.07968544498633 8.1827e-06 deg
node 77.36117002994348 2.2507e-05 deg
peri 99.14623681475841 2.8454e-05 deg
M 23.81255392309401 2.4834e-05 deg
tp 2459078.667271127887
(2020-Aug-17.16727113)		 0.00012641 TDB
period 1841.876454563086
5.04		 1.9378e-05
5.305e-08		 d
yr
n .1954528487011883 2.0563e-09 deg/d
Q 4.516368992932262 3.1676e-08 au
   Orbit Determination Parameters
   # obs. used (total)      643  
   data-arc span      7467 days (20.44 yr)  
   first obs. used      1999-11-15  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51183  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:18:42  

Additional Information
 Earth MOID = .419607 au 
 Jupiter MOID = .837014 au 
 T_jup = 3.019 
[ 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 15.43   n/a E2021B25  

376764 (1999 XS16)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: Last Updated: 2013-11-20

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