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312565 (2009 HD7)
Classification: Main-belt Asteroid          SPK-ID: 2312565
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1410359174978383 6.8613e-08  
a 2.361616076932081 1.4742e-08 au
q 2.02854338674432 1.5845e-07 au
i 5.194236190190742 5.3963e-06 deg
node 87.76410982241349 8.0305e-05 deg
peri 115.0874073916685 8.3293e-05 deg
M 28.22901118624309 1.9382e-05 deg
tp 2458896.554537271607
(2020-Feb-17.05453727)
7.1245e-05 TDB
period 1325.599622860951
3.63
1.2412e-05
3.398e-08
d
yr
n .2715752130519143 2.5429e-09 deg/d
Q 2.694688767119843 1.6821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      176  
   data-arc span      9631 days (26.37 yr)  
   first obs. used      1993-12-14  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6776  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:27:45  

Additional Information
 Earth MOID = 1.03124 au 
 Jupiter MOID = 2.27346 au 
 T_jup = 3.532 
[ 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 17.5   n/a MPO418616  

312565 (2009 HD7)          Discovered 2009-Apr-17 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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