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JPL Small-Body Database Browser
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52568 (1997 HJ8)
Classification: Main-belt Asteroid          SPK-ID: 2052568
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2358647129397976 5.4123e-08  
a 2.380350322377889 1.2126e-08 au
q 1.818909676894073 1.2935e-07 au
i 2.125217848374295 5.8914e-06 deg
node 176.37785775 0.00012299 deg
peri 198.4420482595671 0.00012354 deg
M 321.4326850276059 1.7501e-05 deg
tp 2459144.206577958988
(2020-Oct-21.70657796)
6.6093e-05 TDB
period 1341.404453544836
3.67
1.025e-05
2.806e-08
d
yr
n .2683754322185625 2.0507e-09 deg/d
Q 2.941790967861705 1.4986e-08 au
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      8511 days (23.30 yr)  
   first obs. used      1996-02-10  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62126  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:30:58  

Additional Information
 Earth MOID = .820022 au 
 Jupiter MOID = 2.52132 au 
 T_jup = 3.500 
[ 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 15.3   n/a MPO287137  
diameter diameter 3.280 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.150   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52568 (1997 HJ8)          Discovered 1997-Apr-30 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 HJ8 = 1998 RE75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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