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49657 (1999 JH99)
Classification: Main-belt Asteroid          SPK-ID: 2049657
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2133243008857648 4.125e-08  
a 3.045681851860996 2.2559e-08 au
q 2.395963900092288 1.2901e-07 au
i 10.94379787465528 5.0946e-06 deg
node 113.125515505002 2.6389e-05 deg
peri 23.57621778486368 2.9079e-05 deg
M 353.2659303295064 1.2869e-05 deg
tp 2458636.816194603540
(2019-Jun-02.31619460)
6.9551e-05 TDB
period 1941.445618621927
5.32
2.157e-05
5.906e-08
d
yr
n .1854288353724451 2.0602e-09 deg/d
Q 3.695399803629705 2.7371e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1181  
   data-arc span      13623 days (37.30 yr)  
   first obs. used      1982-01-19  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52692  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:41:01  

Additional Information
 Earth MOID = 1.41498 au 
 Jupiter MOID = 1.38972 au 
 T_jup = 3.176 
[ 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 13.5   n/a MPO302340  
diameter diameter 10.363 km 2.568 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.085   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

49657 (1999 JH99)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JH99 = 1982 BG10 = 1986 XQ4 = 1999 LU8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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