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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06582524842957121 6.4464e-08  
a 2.349624122238352 1.7856e-08 AU
q 2.1949595306759 1.5405e-07 AU
i 7.634570917228011 7.2386e-06 deg
node 63.28571061020622 4.664e-05 deg
peri 128.7193160691363 7.2438e-05 deg
M 218.9946138719552 5.3775e-05 deg
tp 2457515.763307032341
(2016-May-07.26330703)
0.00019752 JED
period 1315.515638269291
3.60
1.4996e-05
4.106e-08
d
yr
n .2736569520934169 3.1195e-09 deg/d
Q 2.504288713800805 1.9032e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      975  
   data-arc span      9077 days (24.85 yr)  
   first obs. used      1989-10-26  
   last obs. used      2014-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53151  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:53:30  

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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