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JPL Small-Body Database Browser
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136839 (1997 WT22)
Classification: Amor [NEO]          SPK-ID: 2136839
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 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3058467309819393 3.6988e-08  
a 1.485317822845613 2.0958e-09 au
q 1.031038222259071 5.4291e-08 au
i 8.160136752443176 6.1937e-06 deg
node 71.95263969273584 2.4206e-05 deg
peri 74.74746286106405 2.6055e-05 deg
M 245.1764254680031 8.8041e-06 deg
tp 2458811.390043896034
(2019-Nov-23.89004390)
1.6269e-05 TDB
period 661.1918860043513
1.81
1.3994e-06
3.831e-09
d
yr
n .5444712913455668 1.1524e-09 deg/d
Q 1.939597423432155 2.7368e-09 au
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      10802 days (29.57 yr)  
   first obs. used      1988-12-13  
   last obs. used      2018-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52455  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Jul-12 07:08:54  

Additional Information
 Earth MOID = .13057 au 
 Jupiter MOID = 3.0947 au 
 T_jup = 4.510 
[ 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 18.7   n/a MPO436675  

136839 (1997 WT22)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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