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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4201325235990946 4.5716e-05  
a 56.15990379726529 0.0050347 au
q 32.56530168983785 0.00035387 au
i 13.15350551296783 3.0243e-05 deg
node 166.5055406131028 0.00019367 deg
peri 66.9109532703085 0.0013037 deg
M .980219951686176 0.00036388 deg
tp 2458581.938771602485
(2019-Apr-08.43877160)
0.20591 TDB
period 153722.6843464082
420.87
20.672
0.0566
d
yr
n .002341879479470667 3.1492e-07 deg/d
Q 79.75450590469273 0.0071499 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      7703 days (21.09 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .49853  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:30:47  

Additional Information
 Earth MOID = 31.5776 au 
 Jupiter MOID = 27.281 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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