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66176 (1998 WR4)
Classification: Inner Main-belt Asteroid          SPK-ID: 2066176
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1375326710840176 3.1024e-08  
a 1.946481924575781 6.8752e-09 au
q 1.678777066272114 5.9998e-08 au
i 22.69766086207848 5.0262e-06 deg
node 204.1512254127226 9.1316e-06 deg
peri 269.5220484168538 2.0358e-05 deg
M 15.35395788972396 1.6623e-05 deg
tp 2459158.194986891603
(2020-Nov-04.69498689)
4.583e-05 TDB
period 991.9139304931886
2.72
5.2553e-06
1.439e-08
d
yr
n .3629347153346306 1.9229e-09 deg/d
Q 2.214186782879447 7.8208e-09 au
  Orbit Determination Parameters
   # obs. used (total)      810  
   data-arc span      9814 days (26.87 yr)  
   first obs. used      1994-05-10  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:00:58  

Additional Information
 Earth MOID = .831343 au 
 Jupiter MOID = 2.99173 au 
 T_jup = 3.791 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.01   n/a MPCxxxxx  

66176 (1998 WR4)          Discovered 1998-Nov-18 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 WR4 = 1994 JM1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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