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JPL Small-Body Database Browser
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523939 (1998 HB12)
Classification: Main-belt Asteroid          SPK-ID: 2523939
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442366110703802 7.8001e-08  
a 2.341252694383456 2.07e-08 au
q 2.00355834008619 1.824e-07 au
i 9.765017654710434 1.0231e-05 deg
node 19.83609280511403 4.5487e-05 deg
peri 163.7884261085316 7.3548e-05 deg
M 330.8138088112902 5.1211e-05 deg
tp 2458706.582997914749
(2019-Aug-11.08299791)
0.00018661 TDB
period 1308.491368482594
3.58
1.7354e-05
4.751e-08
d
yr
n .2751260028696084 3.6488e-09 deg/d
Q 2.678947048680722 2.3686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      42  
   data-arc span      7588 days (20.77 yr)  
   first obs. used      1998-04-19  
   last obs. used      2019-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62201  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 10:46:58  

Additional Information
 Earth MOID = 1.00715 au 
 Jupiter MOID = 2.27952 au 
 T_jup = 3.531 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.4   .19025 MPO457200 autocmod 2.6q

523939 (1998 HB12)          Discovered 1998-Apr-19 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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