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90818 Daverichards (1995 RR)
Classification: Main-belt Asteroid          SPK-ID: 2090818
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1058112877599333 6.1408e-08  
a 2.727312804698887 1.772e-08 au
q 2.438732324709543 1.6437e-07 au
i 8.682845560216371 5.477e-06 deg
node 80.01145204139161 3.9507e-05 deg
peri 317.7677484261886 4.6648e-05 deg
M 125.1865561775487 2.4298e-05 deg
tp 2458428.420947537979
(2018-Nov-05.92094754)
0.00011058 TDB
period 1645.13239420243
4.50
1.6033e-05
4.39e-08
d
yr
n .2188273729632138 2.1327e-09 deg/d
Q 3.015893284688232 1.9595e-08 au
  Orbit Determination Parameters
   # obs. used (total)      468  
   data-arc span      8993 days (24.62 yr)  
   first obs. used      1995-09-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54132  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:35:08  

Additional Information
 Earth MOID = 1.45514 au 
 Jupiter MOID = 2.36592 au 
 T_jup = 3.331 
[ 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 15.5   n/a MPO351481  

90818 Daverichards           Discovered 1995 Sept. 14 by AMOS at Haleakala.
Dave Richards (b. 1957) was the AMOS Commander during the last years of the twentieth century, ardently supporting the search for near-earth objcets in collaboration with the Jet Propulsion Laboratory.
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

Alternate Designations
 1995 RR = 2000 UR17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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