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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3100168832687946 9.1873e-08  
a 3.013022128495359 2.2504e-08 au
q 2.078934398999318 2.8482e-07 au
i 3.12151047346951 6.0649e-06 deg
node 130.2981322933551 0.00015468 deg
peri 96.00101542904062 0.0001557 deg
M 339.8695804061157 1.2342e-05 deg
tp 2458707.319916788475
(2019-Aug-11.81991679)
6.6017e-05 TDB
period 1910.301465128614
5.23
2.1402e-05
5.86e-08
d
yr
n .1884519310546424 2.1113e-09 deg/d
Q 3.9471098579914 2.9481e-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 = 1.07247 au 
 Jupiter MOID = 1.05355 au 
 T_jup = 3.172 
[ 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 15.9   n/a MPO433112  

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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