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 ]  
66306 (1999 JG39)
Classification: Main-belt Asteroid          SPK-ID: 2066306
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .2220552882736715 3.9351e-08  
a 2.241574410172398 8.4073e-09 au
q 1.743820958334681 9.0645e-08 au
i 4.329766404245786 4.5205e-06 deg
node 20.1023706418478 4.9978e-05 deg
peri 296.4241907108346 5.0962e-05 deg
M 37.02739846233311 1.3025e-05 deg
tp 2458874.419226110743
(2020-Jan-25.91922611)
4.3935e-05 TDB
period 1225.82413253541
3.36
6.8964e-06
1.888e-08
d
yr
n .2936799745126576 1.6522e-09 deg/d
Q 2.739327862010115 1.0274e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1059  
   data-arc span      11932 days (32.67 yr)  
   first obs. used      1986-09-09  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56091  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:27:55  

Additional Information
 Earth MOID = .735955 au 
 Jupiter MOID = 2.57194 au 
 T_jup = 3.598 
[ 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 15.5   n/a MPO381719  

66306 (1999 JG39)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JG39 = 1986 RT12 = 1998 CP5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-20 00:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin