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190271 (2008 HG5)
Classification: Main-belt Asteroid          SPK-ID: 2190271
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08950097806032493 7.0591e-08  
a 3.01091098685205 3.2031e-08 au
q 2.741431508676213 1.9475e-07 au
i 9.124980679875948 8.0901e-06 deg
node 201.0624775219513 2.9628e-05 deg
peri 59.86563509301364 6.6226e-05 deg
M 102.3200520679886 5.3031e-05 deg
tp 2458658.120141800101
(2019-Jun-23.62014180)		 0.00028477 TDB
period 1908.294073406271
5.22		 3.0451e-05
8.337e-08		 d
yr
n .1886501692883248 3.0104e-09 deg/d
Q 3.280390465027886 3.4897e-08 au
   Orbit Determination Parameters
   # obs. used (total)      226  
   data-arc span      8675 days (23.75 yr)  
   first obs. used      1997-03-08  
   last obs. used      2020-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57745  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:02:28  

Additional Information
 Earth MOID = 1.73932 au 
 Jupiter MOID = 1.77704 au 
 T_jup = 3.224 
[ 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 16.14   n/a E2021B55  

190271 (2008 HG5)          Discovered 2008-Apr-24 by Spacewatch at Kitt Peak
Reference: 20080819/Numbers.arcLast Updated: 2008-08-25

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