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JPL Small-Body Database Browser
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249598 (1997 WB7)
Classification: Main-belt Asteroid          SPK-ID: 2249598
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2481179105423935 5.4119e-08  
a 2.757648112323479 1.6823e-08 au
q 2.073426224682601 1.5413e-07 au
i 7.75293214190531 5.4219e-06 deg
node 289.2673367616241 3.5508e-05 deg
peri 165.9566979219451 3.7363e-05 deg
M 243.4555639491492 1.1672e-05 deg
tp 2459141.996610015802
(2020-Oct-19.49661002)
5.707e-05 TDB
period 1672.656252080817
4.58
1.5306e-05
4.191e-08
d
yr
n .2152265293912918 1.9695e-09 deg/d
Q 3.441869999964355 2.0997e-08 au
  Orbit Determination Parameters
   # obs. used (total)      332  
   data-arc span      7994 days (21.89 yr)  
   first obs. used      1997-11-24  
   last obs. used      2019-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54081  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:46:30  

Additional Information
 Earth MOID = 1.09127 au 
 Jupiter MOID = 1.75714 au 
 T_jup = 3.284 
[ 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 16.2   n/a MPO360272  

249598 (1997 WB7)          Discovered 1997-Nov-24 by Spacewatch at Kitt Peak
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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