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100829 (1998 HW8)
Classification: Main-belt Asteroid          SPK-ID: 2100829
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04236086029963752 4.0741e-08  
a 2.314271628058504 1.1355e-08 au
q 2.216237090926903 9.697e-08 au
i 5.278275858708106 5.0295e-06 deg
node 158.5090398504473 5.0177e-05 deg
peri 335.6394768171587 8.6337e-05 deg
M 171.2154295709712 6.845e-05 deg
tp 2458388.910074824957
(2018-Sep-27.41007482)		 0.00024525 TDB
period 1285.937684557518
3.52		 9.4639e-06
2.591e-08		 d
yr
n .2799513571482848 2.0603e-09 deg/d
Q 2.412306165190105 1.1836e-08 au
   Orbit Determination Parameters
   # obs. used (total)      449  
   data-arc span      9747 days (26.69 yr)  
   first obs. used      1992-09-25  
   last obs. used      2019-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60493  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:11:52  

Additional Information
 Earth MOID = 1.23061 au 
 Jupiter MOID = 2.57877 au 
 T_jup = 3.575 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO474882  

100829 (1998 HW8)          Discovered 1998-Apr-17 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 HW8 = 1992 SH5 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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