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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1338473193115257 6.6694e-08  
a 2.610501017583988 1.8161e-08 au
q 2.261092454320361 1.7769e-07 au
i 11.55884366819047 8.6721e-06 deg
node 187.4427208988967 2.2244e-05 deg
peri 52.67961866496 3.5078e-05 deg
M 56.28893441642704 2.5327e-05 deg
tp 2458759.617775227765
(2019-Oct-03.11777523)
0.00010777 TDB
period 1540.579899354024
4.22
1.6076e-05
4.401e-08
d
yr
n .2336782403502412 2.4385e-09 deg/d
Q 2.959909580847615 2.0592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      7710 days (21.11 yr)  
   first obs. used      1998-03-22  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62535  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:59:20  

Additional Information
 Earth MOID = 1.27103 au 
 Jupiter MOID = 2.07148 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 15.9   n/a MPO432399  
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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