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JPL Small-Body Database Browser
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136920 (1998 HN145)
Classification: Main-belt Asteroid          SPK-ID: 2136920
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06993409067181214 5.4401e-08  
a 3.179039766626069 4.0251e-08 au
q 2.956716511337545 1.6779e-07 au
i 16.87034904205668 8.2263e-06 deg
node 56.0096893697289 1.9374e-05 deg
peri 97.44765612220175 6.1993e-05 deg
M 312.9517238847159 6.06e-05 deg
tp 2458871.072454947798
(2020-Jan-22.57245495)
0.0003505 TDB
period 2070.343311676917
5.67
3.932e-05
1.077e-07
d
yr
n .1738842046000625 3.3024e-09 deg/d
Q 3.401363021914593 4.3066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      7545 days (20.66 yr)  
   first obs. used      1998-04-21  
   last obs. used      2018-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6418  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:37:00  

Additional Information
 Earth MOID = 2.02393 au 
 Jupiter MOID = 1.73048 au 
 T_jup = 3.129 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO432830  
diameter diameter 7.189 km 0.574 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.078   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136920 (1998 HN145)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 HN145 = 2003 DG15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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