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JPL Small-Body Database Browser
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40343 (1999 NH9)
Classification: Main-belt Asteroid          SPK-ID: 2040343
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1572769379815472 3.1838e-08  
a 2.409619727263241 8.5255e-09 au
q 2.030642114859348 7.7063e-08 au
i 6.751761077019451 3.9588e-06 deg
node 127.4727797437864 2.7281e-05 deg
peri 250.8178883186364 2.9828e-05 deg
M 50.96089630019036 1.1355e-05 deg
tp 2458407.100320987349
(2018-Oct-15.60032099)
4.3023e-05 TDB
period 1366.221740575904
3.74
7.2508e-06
1.985e-08
d
yr
n .2635004182031601 1.3984e-09 deg/d
Q 2.788597339667135 9.8663e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1402  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1998-03-25  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54482  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:10:51  

Additional Information
 Earth MOID = 1.04308 au 
 Jupiter MOID = 2.69229 au 
 T_jup = 3.494 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8   n/a MPO493131  

40343 (1999 NH9)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 NH9 = 1998 HS139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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