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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1915321041904599 4.2144e-08  
a 2.739840199408758 1.3651e-08 au
q 2.215072840870389 1.1759e-07 au
i 10.63472146099748 4.5145e-06 deg
node 63.19694874930653 2.1743e-05 deg
peri 186.6165297859171 2.4558e-05 deg
M 264.1480629068259 1.3721e-05 deg
tp 2459641.546794803347
(2022-Mar-03.04679480)
6.4823e-05 TDB
period 1656.480306442463
4.54
1.238e-05
3.389e-08
d
yr
n .2173282704297 1.6242e-09 deg/d
Q 3.264607557947126 1.6265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1021  
   data-arc span      7996 days (21.89 yr)  
   first obs. used      1999-04-19  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47173  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:03  

Additional Information
 Earth MOID = 1.20004 au 
 Jupiter MOID = 1.77311 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 14.96   n/a E2021B55  

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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