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 ]  
541531 (2011 RD20)
Classification: Main-belt Asteroid          SPK-ID: 2541531
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02009763097886949 1.0317e-07  
a 2.41837926497626 3.769e-08 au
q 2.369775570941817 2.2897e-07 au
i 2.634491814845392 5.9382e-06 deg
node 128.8426267652799 0.00017933 deg
peri 289.7383893710673 0.00054213 deg
M 102.0395770354677 0.00049193 deg
tp 2458811.140126883135
(2019-Nov-23.64012688)
0.0018839 TDB
period 1373.678315751448
3.76
3.2113e-05
8.792e-08
d
yr
n .2620700901164535 6.1264e-09 deg/d
Q 2.466982959010702 3.8447e-08 au
  Orbit Determination Parameters
   # obs. used (total)      81  
   data-arc span      6519 days (17.85 yr)  
   first obs. used      2002-02-13  
   last obs. used      2019-12-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .64388  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:23:32  

Additional Information
 Earth MOID = 1.38136 au 
 Jupiter MOID = 2.56715 au 
 T_jup = 3.513 
[ 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 18.0   n/a MPO420345  

541531 (2011 RD20)          Discovered 2011-Sep-04 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-14 22:32 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin