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173187 (1998 HU53)
Classification: Main-belt Asteroid          SPK-ID: 2173187
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3105599152465535 9.1491e-08  
a 3.013945689321062 2.3584e-08 au
q 2.077934971487798 2.8479e-07 au
i 3.122768023875732 6.0688e-06 deg
node 130.2829376862414 0.00015456 deg
peri 95.92255758684205 0.00015558 deg
M 55.26093714147041 1.2712e-05 deg
tp 2458707.128916413462
(2019-Aug-11.62891641)
6.5929e-05 TDB
period 1911.179859667931
5.23
2.2432e-05
6.142e-08
d
yr
n .1883653169422528 2.2109e-09 deg/d
Q 3.949956407154326 3.0908e-08 au
  Orbit Determination Parameters
   # obs. used (total)      336  
   data-arc span      7690 days (21.05 yr)  
   first obs. used      1998-03-22  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56631  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:22:27  

Additional Information
 Earth MOID = 1.07144 au 
 Jupiter MOID = 1.05017 au 
 T_jup = 3.171 
[ 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 16.0   n/a MPO475466  

173187 (1998 HU53)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1998 HU53 = 2003 EN18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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