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85458 (1997 HD8)
Classification: Main-belt Asteroid          SPK-ID: 2085458
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09073390497665282 4.8988e-08  
a 3.189387546270341 2.7749e-08 au
q 2.900001959713328 1.6197e-07 au
i 5.779165300739974 5.6375e-06 deg
node 44.8848740192251 5.5768e-05 deg
peri 201.2804184521699 6.7298e-05 deg
M 279.7252110125063 4.0659e-05 deg
tp 2459064.412462879521
(2020-Aug-02.91246288)
0.0002364 TDB
period 2080.459989283142
5.70
2.7152e-05
7.434e-08
d
yr
n .1730386558042119 2.2583e-09 deg/d
Q 3.478773132827354 3.0267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      632  
   data-arc span      10257 days (28.08 yr)  
   first obs. used      1991-04-08  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60983  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:55:32  

Additional Information
 Earth MOID = 1.88751 au 
 Jupiter MOID = 1.5364 au 
 T_jup = 3.183 
[ 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 14.4   n/a MPO436373  
diameter diameter 6.732 km 0.288 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85458 (1997 HD8)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 HD8 = 2002 CB168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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