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JPL Small-Body Database Browser
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173241 (1999 HU3)
Classification: Main-belt Asteroid          SPK-ID: 2173241
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2178047339010204 1.0326e-07  
a 2.695435855709881 2.3104e-08 au
q 2.108357166409721 2.7102e-07 au
i 9.429364909503374 7.6388e-06 deg
node 97.58909978714323 5.481e-05 deg
peri 134.5191260923354 5.5871e-05 deg
M 164.8579127964817 1.2216e-05 deg
tp 2457860.299754095333
(2017-Apr-16.79975410)
5.4204e-05 TDB
period 1616.374270458232
4.43
2.0782e-05
5.69e-08
d
yr
n .2227206944453169 2.8635e-09 deg/d
Q 3.282514545010041 2.8136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      340  
   data-arc span      7148 days (19.57 yr)  
   first obs. used      1999-04-12  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58754  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:35:19  

Additional Information
 Earth MOID = 1.10897 au 
 Jupiter MOID = 1.77054 au 
 T_jup = 3.316 
[ 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 MPO266538  

173241 (1999 HU3)          Discovered 1999-Apr-18 by CSS at Catalina
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1999 HU3 = 2003 EJ5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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