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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457102.5 (2015-Mar-21.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .100454465416395 7.2961e-08  
q 2.553827759784476 2.121e-07 au
tp 2456951.242410386783
(2014-Oct-20.74241039)
0.00014462 TDB
node 50.20266910720594 1.8097e-05 deg
peri 203.9780672049148 3.3817e-05 deg
i 16.10921706722583 7.1041e-06 deg
  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
 Jupiter MOID = 1.90348 au 
 T_jup = 3.245 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.32332018590121E-15 -1.53784458113566E-14 -3.92232919174791E-12 -9.993140990650234E-16 -6.05836906239427E-13 5.416779523245313E-15
q -1.53784458113566E-14 4.498503268375027E-14 1.052877789458121E-11 9.259229248054138E-16 1.605941663378978E-12 -1.543299786793505E-14
tp -3.92232919174791E-12 1.052877789458121E-11 2.091584652461356E-8 -1.460530782941206E-11 4.135931676495282E-9 2.165811973372882E-11
node -9.993140990650234E-16 9.259229248054138E-16 -1.460530782941206E-11 3.274960181873253E-10 -3.173795637331422E-10 -5.139535974871107E-12
peri -6.05836906239427E-13 1.605941663378978E-12 4.135931676495282E-9 -3.173795637331422E-10 1.143593089812582E-9 9.682755962510125E-12
i 5.416779523245313E-15 -1.543299786793505E-14 2.165811973372882E-11 -5.139535974871107E-12 9.682755962510125E-12 5.046852484980923E-11

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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