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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1326410227840017 4.8545e-08  
a 2.527575357120679 1.2717e-08 au
q 2.192315176588554 1.2351e-07 au
i 4.420301138203565 4.2579e-06 deg
node 320.4797327980734 6.2199e-05 deg
peri 231.0520679723325 6.3641e-05 deg
M 192.7274994473935 1.4343e-05 deg
tp 2459282.487860294982
(2021-Mar-08.98786029)		 5.9365e-05 TDB
period 1467.758471327328
4.02		 1.1077e-05
3.033e-08		 d
yr
n .2452719619968833 1.8511e-09 deg/d
Q 2.862835537652805 1.4404e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1042  
   data-arc span      7779 days (21.30 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55819  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:02:17  

Additional Information
 Earth MOID = 1.19615 au 
 Jupiter MOID = 2.1159 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

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