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 ]  
541533 (2011 RO21)
Classification: Main-belt Asteroid          SPK-ID: 2541533
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1768931737012197 8.1873e-08  
a 2.399119092589149 4.3593e-08 au
q 1.974731302213864 2.2166e-07 au
i 1.694510086051117 6.5251e-06 deg
node 282.5549499825448 0.00033229 deg
peri .4756729280213314 0.00033625 deg
M 238.4202391352835 6.3718e-05 deg
tp 2459658.889774789221
(2022-Mar-20.38977479)
0.00025138 TDB
period 1357.300900663392
3.72
3.6994e-05
1.013e-07
d
yr
n .2652322707691765 7.229e-09 deg/d
Q 2.823506882964434 5.1304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      72  
   data-arc span      5543 days (15.18 yr)  
   first obs. used      2006-02-04  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61481  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:24  

Additional Information
 Earth MOID = .956357 au 
 Jupiter MOID = 2.32027 au 
 T_jup = 3.505 
[ 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 17.98   .19089 MPCxxxxx autocmod 2.6n

541533 (2011 RO21)          Discovered 2011-Sep-04 by Pan-STARRS 1 at Haleakala
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-24 16:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin