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58242 (1993 HJ4)
Classification: Main-belt Asteroid          SPK-ID: 2058242
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 .1293721139030415 4.9235e-08  
a 3.128267040832545 1.9648e-08 au
q 2.723556520906826 1.5319e-07 au
i 12.61389852020942 5.6688e-06 deg
node 42.88611708969923 2.1925e-05 deg
peri 4.728813855877305 2.9604e-05 deg
M 104.7417892616122 1.9224e-05 deg
tp 2458412.507694218660
(2018-Oct-21.00769422)
0.00010693 TDB
period 2020.943422615963
5.53
1.904e-05
5.213e-08
d
yr
n .178134625626484 1.6782e-09 deg/d
Q 3.532977560758263 2.219e-08 au
  Orbit Determination Parameters
   # obs. used (total)      971  
   data-arc span      10805 days (29.58 yr)  
   first obs. used      1990-10-19  
   last obs. used      2020-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54088  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:51:48  

Additional Information
 Earth MOID = 1.73347 au 
 Jupiter MOID = 1.88137 au 
 T_jup = 3.164 
[ 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 14.2   n/a MPO459251  
diameter diameter 9.247 km 0.619 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58242 (1993 HJ4)          Discovered 1993-Apr-21 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 HJ4 = 2001 TG141 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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