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 ]  
305207 (2007 WS20)
Classification: Main-belt Asteroid          SPK-ID: 2305207
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01204793487433987 6.8384e-08  
a 2.999665291194233 4.6129e-08 au
q 2.963525519121107 1.951e-07 au
i 10.61073062360697 6.5342e-06 deg
node 112.1750624542349 4.4077e-05 deg
peri 26.0931377635197 0.0003277 deg
M 52.58729841971737 0.00032449 deg
tp 2458323.304622767346
(2018-Jul-23.80462277)
0.0017096 TDB
period 1897.612898979792
5.20
4.3773e-05
1.198e-07
d
yr
n .1897120325191432 4.3761e-09 deg/d
Q 3.035805063267358 4.6685e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      4217 days (11.55 yr)  
   first obs. used      2007-11-09  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53815  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:54:25  

Additional Information
 Earth MOID = 1.98152 au 
 Jupiter MOID = 2.01219 au 
 T_jup = 3.227 
[ 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 MPO433966  

305207 (2007 WS20)          Discovered 2007-Nov-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
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