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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1456813745769432 3.3471e-08  
a 2.459614488393909 1.2294e-08 au
q 2.101294468795319 8.2452e-08 au
i .8257169427573808 4.246e-06 deg
node 13.70392170307365 0.00029978 deg
peri 242.132393417303 0.00030027 deg
M 230.9904559603553 1.8176e-05 deg
tp 2459505.415066742210
(2021-Oct-17.91506674)
7.2338e-05 TDB
period 1408.96106082925
3.86
1.0563e-05
2.892e-08
d
yr
n .2555074160730322 1.9156e-09 deg/d
Q 2.817934507992498 1.4085e-08 au
  Orbit Determination Parameters
   # obs. used (total)      683  
   data-arc span      7947 days (21.76 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58822  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:35:38  

Additional Information
 Earth MOID = 1.08657 au 
 Jupiter MOID = 2.22835 au 
 T_jup = 3.476 
[ 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 16.0   n/a MPO453286  
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

[ show close-approach data ]
Alternate Designations
 1998 HJ86 = 2002 JR58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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