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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1061231160508014 5.275e-08  
a 2.726485942526812 1.5423e-08 au
q 2.43714275843716 1.4434e-07 au
i 8.683376240944995 5.3402e-06 deg
node 80.00572436202425 3.0946e-05 deg
peri 317.6593751848555 3.6736e-05 deg
M 211.9944455005854 2.2118e-05 deg
tp 2460072.550027381077
(2023-May-08.05002738)
0.00010365 TDB
period 1644.384298145719
4.50
1.3953e-05
3.82e-08
d
yr
n .2189269262701864 1.8576e-09 deg/d
Q 3.015829126616463 1.706e-08 au
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      9451 days (25.88 yr)  
   first obs. used      1995-09-14  
   last obs. used      2021-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53363  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:16:42  

Additional Information
 Earth MOID = 1.45298 au 
 Jupiter MOID = 2.36819 au 
 T_jup = 3.332 
[ 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 15.58   n/a MPO637235  

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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