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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
91543 (1999 RJ207)
Classification: Main-belt Asteroid          SPK-ID: 2091543
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04854691031781841 3.4938e-08  
a 2.993332054205416 1.6793e-08 au
q 2.848015031418454 1.0662e-07 au
i 9.092902592415781 3.6646e-06 deg
node 256.8713036145595 2.3697e-05 deg
peri 138.0805246554943 4.8493e-05 deg
M 49.76124955964137 4.0159e-05 deg
tp 2459135.031396051216
(2020-Oct-12.53139605)
0.00021157 TDB
period 1891.606385582107
5.18
1.5918e-05
4.358e-08
d
yr
n .190314434728035 1.6016e-09 deg/d
Q 3.138649076992377 1.7608e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1369  
   data-arc span      7882 days (21.58 yr)  
   first obs. used      1999-09-08  
   last obs. used      2021-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49875  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:50  

Additional Information
 Earth MOID = 1.86297 au 
 Jupiter MOID = 2.16824 au 
 T_jup = 3.234 
[ 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 14.21   n/a MPCxxxxx  

91543 (1999 RJ207)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-22 00:53 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin