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JPL Small-Body Database Browser
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312564 (2009 HN4)
Classification: Main-belt Asteroid          SPK-ID: 2312564
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1030407684827168 4.6266e-08  
a 2.711725879661645 2.8334e-08 au
q 2.432307561106838 1.2645e-07 au
i 4.363539846947327 5.3473e-06 deg
node 124.5962731445028 8.8545e-05 deg
peri 182.3767344767039 0.00010066 deg
M 349.5966410266983 4.4044e-05 deg
tp 2458647.634422372055
(2019-Jun-13.13442237)
0.00019957 TDB
period 1631.049365641039
4.47
2.5563e-05
6.999e-08
d
yr
n .2207168020684106 3.4593e-09 deg/d
Q 2.991144198216452 3.1253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      4726 days (12.94 yr)  
   first obs. used      2006-09-28  
   last obs. used      2019-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67813  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:03  

Additional Information
 Earth MOID = 1.4166 au 
 Jupiter MOID = 2.21546 au 
 T_jup = 3.351 
[ 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 17.1   n/a MPO440462  

312564 (2009 HN4)          Discovered 2009-Apr-17 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

Alternate Designations
 2009 HN4 = 2006 SG340 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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