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85612 (1998 HL23)
Classification: Main-belt Asteroid          SPK-ID: 2085612
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1338678889127719 4.533e-08  
a 2.608772154314797 1.4936e-08 au
q 2.259541333362251 1.1511e-07 au
i 11.56367302297842 6.0588e-06 deg
node 187.4287172782418 1.6939e-05 deg
peri 52.39099989680034 3.1042e-05 deg
M 149.1992993713434 2.3053e-05 deg
tp 2458758.652386200215
(2019-Oct-02.15238620)
9.7844e-05 TDB
period 1539.049727012502
4.21
1.3217e-05
3.619e-08
d
yr
n .2339105707122325 2.0088e-09 deg/d
Q 2.958002975267342 1.6935e-08 au
  Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      8540 days (23.38 yr)  
   first obs. used      1998-03-22  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60027  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:54:08  

Additional Information
 Earth MOID = 1.2698 au 
 Jupiter MOID = 2.07016 au 
 T_jup = 3.369 
[ 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 15.94   n/a E2021B10  
diameter diameter 4.012 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85612 (1998 HL23)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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