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 ]  
231212 (2005 WK57)
Classification: Main-belt Asteroid          SPK-ID: 2231212
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2213463291805266 7.0365e-08  
a 2.418960005244029 2.0197e-08 au
q 1.883532087648756 1.7649e-07 au
i 10.06092689140659 8.3771e-06 deg
node 104.8264330350685 5.7749e-05 deg
peri 314.1840075989587 6.5791e-05 deg
M 307.1181935950199 3.4197e-05 deg
tp 2459202.357662484367
(2020-Dec-18.85766248)
0.00013232 TDB
period 1374.173150173033
3.76
1.721e-05
4.712e-08
d
yr
n .2619757196934531 3.281e-09 deg/d
Q 2.954387922839302 2.4667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      6060 days (16.59 yr)  
   first obs. used      2001-08-12  
   last obs. used      2018-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .71574  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 05:40:52  

Additional Information
 Earth MOID = .911765 au 
 Jupiter MOID = 2.40477 au 
 T_jup = 3.460 
[ 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 17.3   n/a MPO433511  

231212 (2005 WK57)          Discovered 2005-Nov-30 by Lowe, A. at Mayhill
Reference: 20100130/Numbers.arcLast Updated: 2010-02-01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-20 06:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin