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136838 (1997 WG22)
Classification: Main-belt Asteroid          SPK-ID: 2136838
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1017137477903194 7.2854e-08  
a 2.838403679340713 2.6913e-08 au
q 2.549699003373138 2.1263e-07 au
i 16.10065405110488 7.1016e-06 deg
node 50.15103881431551 1.8117e-05 deg
peri 203.3214454390695 3.3439e-05 deg
M 62.90773651318492 2.8826e-05 deg
tp 2458695.281237723127
(2019-Jul-30.78123772)
0.0001397 TDB
period 1746.665203836168
4.78
2.4842e-05
6.801e-08
d
yr
n .2061070428433215 2.9314e-09 deg/d
Q 3.127108355308289 2.965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      538  
   data-arc span      9660 days (26.45 yr)  
   first obs. used      1992-11-26  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56301  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:13:25  

Additional Information
 Earth MOID = 1.54326 au 
 Jupiter MOID = 1.90348 au 
 T_jup = 3.245 
[ 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 14.8   n/a MPO453850  
diameter diameter 3.115 km 0.346 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.263   0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136838 (1997 WG22)          Discovered 1997-Nov-28 by BAO Schmidt CCD Asteroid Program at Xinglong
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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