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66177 (1998 WE5)
Classification: Main-belt Asteroid          SPK-ID: 2066177
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1360207290722707 3.8295e-08  
a 3.165963984533791 3.0063e-08 au
q 2.735327255140953 1.1858e-07 au
i 14.2366854647999 4.5771e-06 deg
node 151.5312572353125 1.839e-05 deg
peri 247.5684383198198 2.5499e-05 deg
M 313.8562132954683 1.8019e-05 deg
tp 2459264.235208946888
(2021-Feb-18.73520895)
0.00010403 TDB
period 2057.5830897631
5.63
2.9307e-05
8.024e-08
d
yr
n .1749625576683023 2.4921e-09 deg/d
Q 3.596600713926628 3.4152e-08 au
  Orbit Determination Parameters
   # obs. used (total)      660  
   data-arc span      11168 days (30.58 yr)  
   first obs. used      1987-12-17  
   last obs. used      2018-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53634  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:55:27  

Additional Information
 Earth MOID = 1.7792 au 
 Jupiter MOID = 2.01672 au 
 T_jup = 3.142 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456810.5 (2014-Jun-02.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138820062903989 3.8772e-08  
q 2.726849151963732 1.2043e-07 au
tp 2457189.643877757937
(2015-Jun-16.14387776)
9.4821e-05 TDB
node 152.0524904024172 1.8368e-05 deg
peri 244.7007336676242 2.508e-05 deg
i 14.25058060541339 4.5792e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      660  
   data-arc span      11168 days (30.58 yr)  
   first obs. used      1987-12-17  
   last obs. used      2018-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53634  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:55:27  

Additional Information
 Jupiter MOID = 2.01672 au 
 T_jup = 3.142 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.503259350157231E-15 -4.569462072085088E-15 1.486576167156933E-13 -7.014661145311263E-15 1.99172720230887E-14 -1.173707000092317E-15
q -4.569462072085088E-15 1.450400952873478E-14 -2.842407699083242E-13 2.320181150175337E-14 -5.893978444423658E-14 4.453919304618372E-15
tp 1.486576167156933E-13 -2.842407699083242E-13 8.991086761150991E-9 -2.519306549380204E-12 1.644403516041916E-9 -6.029603285977473E-12
node -7.014661145311263E-15 2.320181150175337E-14 -2.519306549380204E-12 3.373794759473013E-10 -3.272091208087995E-10 -3.254801909453307E-12
peri 1.99172720230887E-14 -5.893978444423658E-14 1.644403516041916E-9 -3.272091208087995E-10 6.289998057051499E-10 2.000484343102721E-12
i -1.173707000092317E-15 4.453919304618372E-15 -6.029603285977473E-12 -3.254801909453307E-12 2.000484343102721E-12 2.096942373174006E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO432213  
diameter diameter 7.110 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66177 (1998 WE5)          Discovered 1998-Nov-21 by Tucker, R. A. at Goodricke-Pigott
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 WE5 = 1987 YW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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