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 ]  
249609 (1999 RL161)
Classification: Main-belt Asteroid          SPK-ID: 2249609
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1456636910877158 5.5644e-08  
a 2.35275457677606 1.5176e-08 au
q 2.010043660899343 1.3711e-07 au
i 6.971014560865595 5.7371e-06 deg
node 194.1571931963394 3.9871e-05 deg
peri 149.0024997764689 4.3132e-05 deg
M 266.7453415130379 1.826e-05 deg
tp 2459341.953369270522
(2021-May-07.45336927)
6.8302e-05 TDB
period 1318.145548241685
3.61
1.2753e-05
3.492e-08
d
yr
n .2731109629586924 2.6424e-09 deg/d
Q 2.695465492652778 1.7386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      288  
   data-arc span      7554 days (20.68 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5638  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:45:41  

Additional Information
 Earth MOID = 1.0065 au 
 Jupiter MOID = 2.72402 au 
 T_jup = 3.532 
[ 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 16.8   n/a MPO427417  

249609 (1999 RL161)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jul-12 18:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin