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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
359876 (2011 WA21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2359876
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1177324392009621 8.3044e-08  
a 3.25210118493808 6.4873e-08 au
q 2.86922337990698 2.4854e-07 au
i 13.26923047426566 1.0169e-05 deg
node 65.89420237093064 3.6054e-05 deg
peri 76.42763809546626 5.7974e-05 deg
M 32.99086219491229 4.4908e-05 deg
tp 2458404.193054181072
(2018-Oct-12.69305418)
0.00026626 TDB
period 2142.123478837502
5.86
6.4096e-05
1.755e-07
d
yr
n .1680575389591297 5.0286e-09 deg/d
Q 3.634978989969178 7.251e-08 au
  Orbit Determination Parameters
   # obs. used (total)      100  
   data-arc span      4940 days (13.52 yr)  
   first obs. used      2005-10-28  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61476  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:31:04  

Additional Information
 Earth MOID = 1.92003 au 
 Jupiter MOID = 1.62811 au 
 T_jup = 3.128 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO434269  

359876 (2011 WA21)          Discovered 2005-Oct-28 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 2011 WA21 = 2005 UY272 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin