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JPL Small-Body Database Browser
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38084 (1999 HB12)
Classification: TransNeptunian Object          SPK-ID: 2038084
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4201344140473997 4.5938e-05  
a 56.15992434095443 0.005078 au
q 32.56520743502124 0.00038252 au
i 13.15349596225798 4.0382e-05 deg
node 166.505553888141 0.00024481 deg
peri 66.91201988672765 0.001821 deg
M .9798300552870276 0.0005661 deg
tp 2458582.105030694547
(2019-Apr-08.60503069)
0.28138 TDB
period 153722.76869568
420.87
20.85
0.05708
d
yr
n .002341878194457194 3.1763e-07 deg/d
Q 79.75464124688762 0.0072115 au
  Orbit Determination Parameters
   # obs. used (total)      139  
   data-arc span      5907 days (16.17 yr)  
   first obs. used      1999-03-20  
   last obs. used      2015-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .51032  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-05 19:12:55  

Additional Information
 Earth MOID = 31.5776 au 
 Jupiter MOID = 27.2809 au 
 T_jup = 5.899 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.8   n/a MPO474237  

38084 (1999 HB12)          Discovered 1999-Apr-18 by Buie, M., Millis, R. at Kitt Peak
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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