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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .102764881220809 4.6277e-08  
a 2.711232670947493 2.8002e-08 au
q 2.432613167555597 1.2642e-07 au
i 4.363870433383084 5.3478e-06 deg
node 124.5953728498513 8.8536e-05 deg
peri 182.4700487550857 0.00010071 deg
M 77.83326257300494 4.4213e-05 deg
tp 2458647.957609306643
(2019-Jun-13.45760931)
0.00020006 TDB
period 1630.604402977024
4.46
2.5262e-05
6.916e-08
d
yr
n .2207770317207175 3.4203e-09 deg/d
Q 2.98985217433939 3.088e-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 = 1.41771 au 
 Jupiter MOID = 2.218 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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