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173948 (2001 WW77)
Classification: Main-belt Asteroid          SPK-ID: 2173948
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1202097896268765 5.7733e-08  
a 3.058996027950817 2.859e-08 au
q 2.691274758961399 1.7939e-07 au
i 1.213367013039459 6.8162e-06 deg
node 213.7938201993854 0.00025521 deg
peri 141.2951211319186 0.00025637 deg
M 215.2702179031904 2.7767e-05 deg
tp 2459786.137498091111
(2022-Jul-25.63749809)
0.00015738 TDB
period 1954.190044476235
5.35
2.7396e-05
7.501e-08
d
yr
n .1842195445717194 2.5826e-09 deg/d
Q 3.426717296940236 3.2026e-08 au
  Orbit Determination Parameters
   # obs. used (total)      232  
   data-arc span      8987 days (24.61 yr)  
   first obs. used      1995-09-18  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60433  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:33:13  

Additional Information
 Earth MOID = 1.68668 au 
 Jupiter MOID = 2.01031 au 
 T_jup = 3.223 
[ 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 16.0   n/a MPO469866  

173948 (2001 WW77)          Discovered 2001-Nov-20 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 2001 WW77 = 1995 SD15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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