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

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0658252487496514 6.4442e-08  
a 2.349624114669048 1.4973e-08 AU
q 2.194959522852779 1.536e-07 AU
i 7.634570840837697 7.0324e-06 deg
node 63.28570271112526 3.9599e-05 deg
peri 128.7193460286607 6.1667e-05 deg
M 218.9945975924188 4.9423e-05 deg
tp 2457515.763364031309
(2016-May-07.26336403)
0.00018303 JED
period 1315.515631912398
3.60
1.2575e-05
3.443e-08
d
yr
n .273656953415794 2.6159e-09 deg/d
Q 2.504288706485317 1.5959e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1072  
   data-arc span      9177 days (25.13 yr)  
   first obs. used      1989-10-26  
   last obs. used      2014-12-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52735  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:25:30  

Additional Information
 Earth MOID = 1.20248 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 13.2 mag n/a MPO296204  
rotation period rot_per 2.89111 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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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