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 ]  
18478 (1995 WT15)
Classification: Main-belt Asteroid          SPK-ID: 2018478
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0828205512301554 3.9091e-08  
a 2.885618478865177 1.3152e-08 au
q 2.64662996580564 1.1844e-07 au
i 2.192019659094056 3.941e-06 deg
node 26.89298907580778 0.00010107 deg
peri 350.6137729306839 0.00010376 deg
M 16.88349255184265 2.3504e-05 deg
tp 2458916.531463794085
(2020-Mar-08.03146379)
0.00011685 TDB
period 1790.427717565485
4.90
1.224e-05
3.351e-08
d
yr
n .2010692732625398 1.3746e-09 deg/d
Q 3.124606991924713 1.4241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1652  
   data-arc span      10640 days (29.13 yr)  
   first obs. used      1990-10-12  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54611  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:28:45  

Additional Information
 Earth MOID = 1.64818 au 
 Jupiter MOID = 2.30123 au 
 T_jup = 3.286 
[ 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 13.9   n/a MPO350949  

18478 (1995 WT15)          Discovered 1995-Nov-17 by Spacewatch at Kitt Peak
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 WT15 = 1998 HC66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-14 05:57 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin