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8359 (1989 WD)
Classification: Main-belt Asteroid          SPK-ID: 2008359
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06569255679379958 6.632e-08  
a 2.34990154976659 1.8157e-08 AU
q 2.195530508748711 1.5983e-07 AU
i 7.634282269768284 7.7017e-06 deg
node 63.28778218620689 4.7963e-05 deg
peri 128.7371110435659 7.7183e-05 deg
M 164.2425281710439 5.7984e-05 deg
tp 2456200.216993400854
(2012-Sep-29.71699340)
0.00021191 JED
period 1315.748635765285
3.60
1.525e-05
4.175e-08
d
yr
n .2736084919370723 3.1712e-09 deg/d
Q 2.50427259078447 1.935e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      962  
   data-arc span      8566 days (23.45 yr)  
   first obs. used      1989-10-26  
   last obs. used      2013-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57468  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 15:56:30  

Additional Information
 Earth MOID = 1.20204 AU 
 T_jup = 3.544 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a MPO263424  
rotation period rot_per 2.89111 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Higgins, D.; Warner, B.D. (2009) Minor Planet Bul. 36, 159-160.]
[Brinsfield, J.W. (2009) Minor Planet Bul. 36, 169.]

[ show close-approach data ]
Alternate Designations
 1989 WD = 1991 HB 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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