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 ]  
146720 (2001 WC87)
Classification: Main-belt Asteroid          SPK-ID: 2146720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1752298107852073 3.6131e-08  
a 2.660482224270441 1.2131e-08 au
q 2.194286427514124 9.6069e-08 au
i 3.134653311158779 4.7104e-06 deg
node 313.68152645 8.0589e-05 deg
peri 159.2832890745445 8.2086e-05 deg
M 44.85380703647097 1.4432e-05 deg
tp 2458803.014243101043
(2019-Nov-15.51424310)
6.3476e-05 TDB
period 1585.035411282186
4.34
1.0841e-05
2.968e-08
d
yr
n .2271242632420335 1.5534e-09 deg/d
Q 3.126678021026758 1.4257e-08 au
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      6764 days (18.52 yr)  
   first obs. used      2001-10-14  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59095  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 23:56:23  

Additional Information
 Earth MOID = 1.21114 au 
 Jupiter MOID = 1.98247 au 
 T_jup = 3.362 
[ 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 15.9   n/a MPO453933  

146720 (2001 WC87)          Discovered 2001-Nov-19 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2001 WC87 = 2003 FH79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-05 20:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin