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136841 (1997 WU50)
Classification: Main-belt Asteroid          SPK-ID: 2136841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3742970300046529 5.8178e-08  
a 2.74558604410034 1.3297e-08 au
q 1.717921342171359 1.6103e-07 au
i 11.28034792064859 5.6697e-06 deg
node 68.21660123977459 2.8471e-05 deg
peri 304.1465639271667 2.9146e-05 deg
M 5.18498119082925 6.937e-06 deg
tp 2458976.567079436363
(2020-May-07.06707944)
3.1899e-05 TDB
period 1661.693858822161
4.55
1.2071e-05
3.305e-08
d
yr
n .2166464045640601 1.5738e-09 deg/d
Q 3.773250746029321 1.8273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      8371 days (22.92 yr)  
   first obs. used      1997-11-29  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54935  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:49:33  

Additional Information
 Earth MOID = .748833 au 
 Jupiter MOID = 1.79597 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456978.5 (2014-Nov-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3790837979700643 5.8312e-08  
q 1.70181658666377 1.6189e-07 au
tp 2457315.250049306760
(2015-Oct-19.75004931)
2.3952e-05 TDB
node 68.32142709603947 2.8572e-05 deg
peri 303.9741857550029 2.9182e-05 deg
i 11.2791172882396 5.674e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      8371 days (22.92 yr)  
   first obs. used      1997-11-29  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54935  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 15:49:33  

Additional Information
 Jupiter MOID = 1.79597 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.400246069095655E-15 -9.428532650699896E-15 -1.507880095289352E-13 4.710023662034774E-14 -1.151583593522999E-13 -2.380597812053277E-14
q -9.428532650699896E-15 2.620930743238572E-14 4.884925197339951E-13 -1.304958686682539E-13 3.281227417206366E-13 6.652489796595467E-14
tp -1.507880095289352E-13 4.884925197339951E-13 5.736824190907127E-10 -3.102357135826648E-12 1.654509492565385E-10 1.623153391163671E-12
node 4.710023662034774E-14 -1.304958686682539E-13 -3.102357135826648E-12 8.163526864360952E-10 -8.014518723230028E-10 -4.605146317224371E-11
peri -1.151583593522999E-13 3.281227417206366E-13 1.654509492565385E-10 -8.014518723230028E-10 8.51564495858805E-10 4.595307755658099E-11
i -2.380597812053277E-14 6.652489796595467E-14 1.623153391163671E-12 -4.605146317224371E-11 4.595307755658099E-11 3.219388746838745E-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 15.3   n/a MPO436675  
diameter diameter 2.176 km 0.522 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.258   0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

136841 (1997 WU50)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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Alternate Designations
 1997 WU50 = 2003 AJ78 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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