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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
66631 (1999 RP209)
Classification: Main-belt Asteroid          SPK-ID: 2066631
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995602397133136 5.827e-08  
a 2.647591558522334 1.4069e-08 au
q 2.119237552440671 1.5672e-07 au
i 12.67755251629448 5.3922e-06 deg
node 233.07614366249 2.6856e-05 deg
peri 113.6639551840499 3.0605e-05 deg
M 305.7176638887559 1.282e-05 deg
tp 2459237.763502675460
(2021-Jan-23.26350268)
5.6659e-05 TDB
period 1573.52956932656
4.31
1.2543e-05
3.434e-08
d
yr
n .2287850238200945 1.8237e-09 deg/d
Q 3.175945564603996 1.6877e-08 au
  Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      8510 days (23.30 yr)  
   first obs. used      1995-12-20  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58116  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:15:55  

Additional Information
 Earth MOID = 1.15063 au 
 Jupiter MOID = 2.44085 au 
 T_jup = 3.329 
[ 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 15.6   n/a MPO253782  

66631 (1999 RP209)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RP209 = 1995 YM14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-01 00:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin