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47304 (1999 WH8)
Classification: Main-belt Asteroid          SPK-ID: 2047304
[ 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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1323508601943746 4.488e-08  
a 2.528055706073966 1.2087e-08 au
q 2.19346535875578 1.1571e-07 au
i 4.420449595240284 3.8509e-06 deg
node 320.4681957095011 5.9468e-05 deg
peri 231.0291157782153 6.0912e-05 deg
M 290.8339179808436 1.4414e-05 deg
tp 2459282.577899268156
(2021-Mar-09.07789927)		 5.921e-05 TDB
period 1468.17689786753
4.02		 1.053e-05
2.883e-08		 d
yr
n .2452020601351827 1.7586e-09 deg/d
Q 2.862646053392153 1.3687e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1130  
   data-arc span      8123 days (22.24 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54337  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:24:09  

Additional Information
 Earth MOID = 1.19693 au 
 Jupiter MOID = 2.11482 au 
 T_jup = 3.436 
[ 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 14.9   n/a MPO412500  

47304 (1999 WH8)          Discovered 1999-Nov-28 by Kobayashi, T. at Oizumi
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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