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102943 (1999 XY51)
Classification: Main-belt Asteroid          SPK-ID: 2102943
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1735291854595931 3.9559e-08  
a 3.043112452292075 2.0433e-08 au
q 2.515043627183886 1.2908e-07 au
i 7.163347116340947 5.5155e-06 deg
node 58.34085885659979 3.471e-05 deg
peri 51.03027132942967 3.9354e-05 deg
M 309.9722180625672 1.7908e-05 deg
tp 2459469.953715216180
(2021-Sep-12.45371522)
9.7526e-05 TDB
period 1938.989371928217
5.31
1.9529e-05
5.347e-08
d
yr
n .1856637304009563 1.8699e-09 deg/d
Q 3.571181277400263 2.3979e-08 au
  Orbit Determination Parameters
   # obs. used (total)      583  
   data-arc span      9053 days (24.79 yr)  
   first obs. used      1996-03-26  
   last obs. used      2021-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52916  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:22  

Additional Information
 Earth MOID = 1.53909 au 
 Jupiter MOID = 1.61954 au 
 T_jup = 3.204 
[ 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 15.2   n/a MPO493578  

102943 (1999 XY51)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XY51 = 2001 FT66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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