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JPL Small-Body Database Browser
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172817 (2004 HS54)
Classification: Main-belt Asteroid          SPK-ID: 2172817
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300828497468291 5.6007e-08  
a 2.738529914200345 2.2498e-08 au
q 2.382294138844224 1.594e-07 au
i 2.537250812992295 4.9662e-06 deg
node 220.77818614307 0.00015185 deg
peri 325.516941094727 0.00015334 deg
M 222.0028855652908 2.346e-05 deg
tp 2459635.015397351696
(2022-Feb-24.51539735)
0.00011168 TDB
period 1655.292170291617
4.53
2.0398e-05
5.585e-08
d
yr
n .2174842643861343 2.6801e-09 deg/d
Q 3.094765689556465 2.5425e-08 au
  Orbit Determination Parameters
   # obs. used (total)      349  
   data-arc span      9885 days (27.06 yr)  
   first obs. used      1992-10-03  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51344  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 19:43:31  

Additional Information
 Earth MOID = 1.38413 au 
 Jupiter MOID = 1.86963 au 
 T_jup = 3.337 
[ 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 16.1   n/a MPO493967  

172817 (2004 HS54)          Discovered 2004-Apr-21 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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