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52738 (1998 HW108)
Classification: Main-belt Asteroid          SPK-ID: 2052738
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2170894653818469 3.0671e-08  
a 3.061034898997796 1.5944e-08 au
q 2.396516469259189 9.3936e-08 au
i 11.32296975279312 3.5563e-06 deg
node 139.6148653539215 2.2745e-05 deg
peri 331.9445384934535 2.5039e-05 deg
M 159.0186421993553 1.177e-05 deg
tp 2458336.435050436015
(2018-Aug-05.93505044)
6.0171e-05 TDB
period 1956.144119587357
5.36
1.5283e-05
4.184e-08
d
yr
n .1840355198756731 1.4379e-09 deg/d
Q 3.725553328736404 1.9405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      9959 days (27.27 yr)  
   first obs. used      1993-05-14  
   last obs. used      2020-08-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52953  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:47:34  

Additional Information
 Earth MOID = 1.41916 au 
 Jupiter MOID = 1.4201 au 
 T_jup = 3.168 
[ 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 14.2   n/a MPO474411  

52738 (1998 HW108)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20030216/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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