Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
90818 Daverichards (1995 RR)
Classification: Main-belt Asteroid          SPK-ID: 2090818
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]
Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .103301568596073 1.0732e-07  
a 2.728361561076335 4.1566e-08 AU
q 2.446517532119919 3.0671e-07 AU
i 8.68407023797258 1.0879e-05 deg
node 80.15549295312957 6.6213e-05 deg
peri 317.6685641316209 8.2372e-05 deg
M 47.79209016664046 5.2736e-05 deg
tp 2456781.973135620084
(2014-May-04.47313562)
0.0002389 JED
period 1646.081410176163
4.51
3.7617e-05
1.03e-07
d
yr
n .2187012123303628 4.9978e-09 deg/d
Q 3.010205590032751 4.586e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      194  
   data-arc span      6582 days (18.02 yr)  
   first obs. used      1995-09-14  
   last obs. used      2013-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58807  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 17:50:51  

Additional Information
 Earth MOID = 1.46262 AU 
 T_jup = 3.331 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4 mag n/a MPO270522  

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 | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-21 08:45 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin