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JPL Small-Body Database Browser
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100647 (1997 WS2)
Classification: Main-belt Asteroid          SPK-ID: 2100647
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671334324488544 4.3529e-08  
a 2.20639251235492 1.1513e-08 au
q 1.837630558435591 1.007e-07 au
i 2.874102360117383 3.9644e-06 deg
node 73.66547629513902 8.521e-05 deg
peri 297.1837627245702 8.6356e-05 deg
M 358.5159163996777 1.7877e-05 deg
tp 2459005.434901113387
(2020-Jun-04.93490111)
5.9473e-05 TDB
period 1197.078385903297
3.28
9.3696e-06
2.565e-08
d
yr
n .3007321861620195 2.3538e-09 deg/d
Q 2.575154466274249 1.3437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      7918 days (21.68 yr)  
   first obs. used      1997-11-23  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:08:51  

Additional Information
 Earth MOID = .839669 au 
 Jupiter MOID = 2.88876 au 
 T_jup = 3.641 
[ 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 16.5   n/a MPO436469  

100647 (1997 WS2)          Discovered 1997-Nov-23 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1997 WS2 = 2000 RO95 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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