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305985 (2009 HB105)
Classification: Main-belt Asteroid          SPK-ID: 2305985
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0698425567971634 4.8464e-08  
a 2.95210773047014 4.1235e-08 au
q 2.745924978633434 1.598e-07 au
i 10.47861176588311 6.0894e-06 deg
node 75.94827294417017 2.9267e-05 deg
peri 242.9456238742056 5.4127e-05 deg
M 345.4909298871112 4.8102e-05 deg
tp 2459075.167877881727
(2020-Aug-13.66787788)
0.00024817 TDB
period 1852.664287116726
5.07
3.8817e-05
1.063e-07
d
yr
n .1943147511955675 4.0713e-09 deg/d
Q 3.158290482306846 4.4115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      205  
   data-arc span      4587 days (12.56 yr)  
   first obs. used      2006-11-11  
   last obs. used      2019-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58167  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 17:58:47  

Additional Information
 Earth MOID = 1.75098 au 
 Jupiter MOID = 2.04671 au 
 T_jup = 3.240 
[ 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 16.1   n/a MPO437358  

305985 (2009 HB105)          Discovered 2009-Apr-19 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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