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 ]  
66503 (1999 RE81)
Classification: Main-belt Asteroid          SPK-ID: 2066503
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1640260593424484 4.3876e-08  
a 2.581622657753153 1.0714e-08 au
q 2.158169266492725 1.1165e-07 au
i 5.931844062272487 3.2853e-06 deg
node 149.392119702108 5.2754e-05 deg
peri 222.710330269599 5.4353e-05 deg
M 30.81932454805342 1.3182e-05 deg
tp 2459070.794560862408
(2020-Aug-09.29456086)
5.5453e-05 TDB
period 1515.087003828652
4.15
9.4316e-06
2.582e-08
d
yr
n .2376101168383555 1.4792e-09 deg/d
Q 3.005076049013581 1.2471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      8774 days (24.02 yr)  
   first obs. used      1997-02-03  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50942  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:22:45  

Additional Information
 Earth MOID = 1.16066 au 
 Jupiter MOID = 2.46522 au 
 T_jup = 3.398 
[ 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 15.61   n/a MPCxxxxx  

66503 (1999 RE81)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RE81 = 1997 CS5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-15 17:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin