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118390 (1999 JS49)
Classification: Main-belt Asteroid          SPK-ID: 2118390
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1916463112766676 4.94e-08  
a 2.739844663831216 1.4719e-08 au
q 2.214763540536902 1.3492e-07 au
i 10.6357298408375 5.621e-06 deg
node 63.20375315064582 2.2634e-05 deg
peri 186.5898621561037 2.5466e-05 deg
M 220.7191901162782 1.3626e-05 deg
tp 2459641.379118185471
(2022-Mar-02.87911819)
6.4943e-05 TDB
period 1656.484355162656
4.54
1.3349e-05
3.655e-08
d
yr
n .2173277392436648 1.7514e-09 deg/d
Q 3.264925787125529 1.754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      842  
   data-arc span      7858 days (21.51 yr)  
   first obs. used      1999-04-19  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50397  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:11:52  

Additional Information
 Earth MOID = 1.20127 au 
 Jupiter MOID = 1.77381 au 
 T_jup = 3.299 
[ 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 15.0   n/a MPO459558  

118390 (1999 JS49)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1999 JS49 = 2001 XF236 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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