Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
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 ]  
46885 (1998 RR18)
Classification: Main-belt Asteroid          SPK-ID: 2046885
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1952976063500277 4.5218e-08  
a 2.595124361093085 1.1871e-08 au
q 2.088302785190961 1.2058e-07 au
i 3.104999224483746 3.8093e-06 deg
node 144.8228391253782 8.139e-05 deg
peri 239.9182409908866 8.2106e-05 deg
M 39.69322752944358 8.8196e-06 deg
tp 2458832.135857979854
(2019-Dec-14.63585798)
3.7537e-05 TDB
period 1526.988226953639
4.18
1.0478e-05
2.869e-08
d
yr
n .2357582027454165 1.6177e-09 deg/d
Q 3.10194593699521 1.419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      7832 days (21.44 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57254  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:36:59  

Additional Information
 Earth MOID = 1.09411 au 
 Jupiter MOID = 2.35398 au 
 T_jup = 3.388 
[ 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 15.5   n/a MPO449297  

46885 (1998 RR18)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 RR18 = 2000 CL117 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-05 11:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin