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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5358472959658266 6.5315e-08  
a 2.940636745202011 2.0617e-08 au
q 1.364904496867764 1.9431e-07 au
i 10.07968548624932 8.1792e-06 deg
node 77.36116992194606 2.2507e-05 deg
peri 99.14623718410698 2.8437e-05 deg
M 23.81255353973516 2.4799e-05 deg
tp 2459078.667273006170
(2020-Aug-17.16727301)
0.00012624 TDB
period 1841.876455819469
5.04
1.937e-05
5.303e-08
d
yr
n .1954528485678658 2.0555e-09 deg/d
Q 4.516368993536258 3.1665e-08 au
  Orbit Determination Parameters
   # obs. used (total)      646  
   data-arc span      7467 days (20.44 yr)  
   first obs. used      1999-11-15  
   last obs. used      2020-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51026  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 12:25:43  

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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