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2005 Hencke (1973 RA)
Classification: Main-belt Asteroid          SPK-ID: 2002005
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656404952425069 1.7362e-08  
a 2.621173924570571 7.7316e-09 au
q 2.187001377587956 4.5041e-08 au
i 12.24003750612211 8.2489e-07 deg
node 290.9548327882544 2.9868e-06 deg
peri 111.7903497068105 7.3983e-06 deg
M 8.728808702483756 5.0341e-06 deg
tp 2459162.916721667083
(2020-Nov-09.41672167)
2.1709e-05 TDB
period 1550.037429048051
4.24
6.8582e-06
1.878e-08
d
yr
n .2322524561365543 1.0276e-09 deg/d
Q 3.055346471553186 9.0123e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      17248 days (47.22 yr)  
   first obs. used      1973-12-23  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3827  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:55:12  

Additional Information
 Earth MOID = 1.22985 au 
 Jupiter MOID = 2.39356 au 
 T_jup = 3.353 
[ 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 12.32   n/a MPCxxxxx  
diameter diameter 9.369 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.186 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Brinsfield, J.W. (2008) Minor Planet Bull. 35, 86-87.]
geometric albedo albedo 0.265   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2005 Hencke (1973 RA)          Discovered 1973-Sep-02 by Wild, P. at Zimmerwald
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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