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85617 (1998 HJ86)
Classification: Main-belt Asteroid          SPK-ID: 2085617
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1455384657706915 2.8435e-08  
a 2.458924434579869 9.9686e-09 au
q 2.10105634492505 7.3533e-08 au
i .8257389008980018 4.1494e-06 deg
node 13.70087090299346 0.00023457 deg
peri 242.2436320767447 0.00023515 deg
M 332.0680695558966 1.5536e-05 deg
tp 2459505.773449241862
(2021-Oct-18.27344924)
6.0796e-05 TDB
period 1408.368168673248
3.86
8.5644e-06
2.345e-08
d
yr
n .2556149790996324 1.5544e-09 deg/d
Q 2.816792524234689 1.1419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      855  
   data-arc span      8450 days (23.13 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .563  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:26:37  

Additional Information
 Earth MOID = 1.08643 au 
 Jupiter MOID = 2.22747 au 
 T_jup = 3.476 
[ 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 16.04   n/a MPCxxxxx  
diameter diameter 1.723 km 0.299 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.216   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85617 (1998 HJ86)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 HJ86 = 2002 JR58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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