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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04894006868599911 3.5403e-08  
a 3.026049949538675 1.6204e-08 au
q 2.877954857160988 1.0442e-07 au
i 2.331945959098956 3.6847e-06 deg
node 155.0289850005944 9.3182e-05 deg
peri 134.9366776574074 0.00010223 deg
M 211.9752597971385 4.4178e-05 deg
tp 2460187.077358394521
(2023-Aug-30.57735839)
0.00023776 TDB
period 1922.704600811897
5.26
1.5444e-05
4.228e-08
d
yr
n .1872362503569105 1.5039e-09 deg/d
Q 3.174145041916362 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-Aug-25 15:17:05  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1941-Mar-27 10:20 00:02 Jupiter 1.91048221633856 1.91048189657808 1.91048253609915 3.19765413431021 3.05586015112951 2430080.930265263 1.79325266735795 68.431166242084 10.5258873033324 85.210369781498 4292490.60776396 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 15:17:13 2021-Aug-25 15:17
1988-Jul-04 04:05 < 00:01 Jupiter 1.91378102875509 1.91378071322438 1.9137813442857 3.25561784756195 3.11670744635846 2447346.670485795 0.66251018425087 40.9737048188429 10.9083167967406 87.0846130992064 4277192.56230571 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 15:17:13 2021-Aug-25 15:17
2035-Oct-13 05:26 < 00:01 Jupiter 1.92180497694486 1.92180465547105 1.92180529841868 3.32741583946394 3.19221079057178 2464613.726471356 0.499890294394482 37.2922832135478 11.4816392361538 89.3608588272188 4273165.81930004 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 15:17:13 2021-Aug-25 15:17
2083-Jan-20 10:12 00:02 Jupiter 1.92885904555894 1.9288586988781 1.92885939223979 3.40164893788039 3.27000806739321 2481879.925046394 1.61545277995508 77.5033260312536 12.0604007489103 -87.8368450757128 4222936.3877829 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 15:17:13 2021-Aug-25 15:17
2130-Apr-30 12:46 00:03 Jupiter 1.93732938627358 1.93732895056821 1.93732982198026 3.48249803252805 3.35460425804397 2499146.031874536 2.73422205836572 132.39373441104 12.6304552541002 -86.0330023477083 4193254.0095003 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 15:17:13 2021-Aug-25 15:17
2177-Aug-07 22:38 00:04 Jupiter 1.95599947468813 1.95599885450515 1.95600009487612 3.59069142346813 3.46799487870455 2516412.443163300 3.84009193114402 192.837329873946 13.2503990702987 -84.3371534129328 4198475.18928338 T 39 CATAB v2.0g-lin.ifort 2021-Aug-25 15:17:13 2021-Aug-25 15:17

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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