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 ]  
541747 (2011 WH128)
Classification: Inner Main-belt Asteroid          SPK-ID: 2541747
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 .037138435190057 1.5098e-07  
a 1.948558075665522 2.3658e-08 au
q 1.876191677858356 2.8183e-07 au
i 18.63591429760755 9.22e-06 deg
node 259.9782402761955 2.492e-05 deg
peri 2.151929040408303 0.00020085 deg
M 275.3037234858888 0.00021382 deg
tp 2459434.238512229324
(2021-Aug-07.73851223)
0.00059091 TDB
period 993.5013422760939
2.72
1.8094e-05
4.954e-08
d
yr
n .3623548199494592 6.5992e-09 deg/d
Q 2.020924473472689 2.4537e-08 au
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      2913 days (7.98 yr)  
   first obs. used      2011-11-24  
   last obs. used      2019-11-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54915  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:24:19  

Additional Information
 Earth MOID = .85914 au 
 Jupiter MOID = 3.03797 au 
 T_jup = 3.829 
[ 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 18.2   .50012 MPO504476 autocmod 2.8

541747 (2011 WH128)          Discovered 2011-Nov-24 by Mount Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2019-12-13

Alternate Designations
 2011 WH128 = 2016 RM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-13 18:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin