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24231 (1999 XN91)
Classification: Main-belt Asteroid          SPK-ID: 2024231
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04894006868621342 3.5403e-08  
a 3.02604994954565 1.6204e-08 au
q 2.877954857166973 1.0442e-07 au
i 2.33194595913485 3.6847e-06 deg
node 155.0289850007912 9.3182e-05 deg
peri 134.9366776555807 0.00010223 deg
M 211.9752597984142 4.4178e-05 deg
tp 2460187.077358390441
(2023-Aug-30.57735839)
0.00023776 TDB
period 1922.704600818545
5.26
1.5444e-05
4.228e-08
d
yr
n .1872362503562631 1.5039e-09 deg/d
Q 3.174145041924326 1.6997e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1770  
   data-arc span      10928 days (29.92 yr)  
   first obs. used      1991-06-07  
   last obs. used      2021-05-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51261  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:58:14  

Additional Information
 Earth MOID = 1.86196 au 
 Jupiter MOID = 1.90563 au 
 T_jup = 3.242 
[ 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 14.03   n/a MPCxxxxx  

24231 (1999 XN91)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XN91 = 1996 FP20 = 1998 VV12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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