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312438 (2008 HH28)
Classification: Main-belt Asteroid          SPK-ID: 2312438
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1619749752481528 4.7352e-08  
a 2.999541408413434 3.8044e-08 au
q 2.513690763029859 1.5079e-07 au
i 7.979321573018091 6.0761e-06 deg
node 228.1874109445891 3.7217e-05 deg
peri 236.1913072341479 4.4168e-05 deg
M 202.0426110462609 2.7129e-05 deg
tp 2459833.065029035813
(2022-Sep-10.56502904)
0.00015445 TDB
period 1897.495346296668
5.20
3.6099e-05
9.883e-08
d
yr
n .1897237854641436 3.6094e-09 deg/d
Q 3.48539205379701 4.4206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      214  
   data-arc span      6859 days (18.78 yr)  
   first obs. used      2002-01-05  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60096  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:47:26  

Additional Information
 Earth MOID = 1.541 au 
 Jupiter MOID = 1.76079 au 
 T_jup = 3.219 
[ 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 16.2   n/a MPO437379  

312438 (2008 HH28)          Discovered 2008-Apr-28 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2008 HH28 = 2010 KO95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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