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8818 Hermannbondi (1985 RW2)
Classification: Main-belt Asteroid          SPK-ID: 2008818
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08099280699369991 4.7516e-08  
a 2.785912021446036 1.2167e-08 au
q 2.560273186791629 1.3026e-07 au
i 1.77555311704464 3.6001e-06 deg
node 96.16289177619872 0.00014205 deg
peri 250.2036392176391 0.00014389 deg
M 159.7249989353342 2.4303e-05 deg
tp 2458246.936393306013
(2018-May-08.43639331)
0.00011407 TDB
period 1698.437315499162
4.65
1.1126e-05
3.046e-08
d
yr
n .2119595446442471 1.3885e-09 deg/d
Q 3.011550856100443 1.3152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1946  
   data-arc span      12695 days (34.76 yr)  
   first obs. used      1985-09-05  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:18:13  

Additional Information
 Earth MOID = 1.55365 au 
 Jupiter MOID = 2.31397 au 
 T_jup = 3.326 
[ 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 13.9   n/a MPO452294  
diameter diameter 9.448 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8818 Hermannbondi           Discovered 1985 Sept. 5 by H. Debehogne at the European Southern Observatory.
British cosmologist Hermann Bondi (1919-2005), known for work on the steady-state theory of the universe, had an impressive career that encompassed mathematics, radar technology, energy, defence, ecology and humanism. As director general of the European Space Research Organization he was a leader in space research.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

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Alternate Designations
 1985 RW2 = 1990 SV26 = 1996 AD8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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