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20356 (1998 HG147)
Classification: Main-belt Asteroid          SPK-ID: 2020356
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739518003261715 2.4781e-08  
a 2.593596376972938 1.1288e-08 au
q 2.14243561787906 6.8412e-08 au
i 12.21716549763339 4.5134e-07 deg
node 93.27862975010828 2.0498e-06 deg
peri 317.3247847955886 4.7998e-06 deg
M 321.203304743966 7.8643e-06 deg
tp 2459364.916063451917
(2021-May-30.41606345)
3.3846e-05 TDB
period 1525.639811640516
4.18
9.9602e-06
2.727e-08
d
yr
n .2359665743206406 1.5405e-09 deg/d
Q 3.044757136066817 1.3252e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2109  
   data-arc span      24157 days (66.14 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45173  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:17:42  

Additional Information
 Earth MOID = 1.17029 au 
 Jupiter MOID = 2.33303 au 
 T_jup = 3.365 
[ 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 13.50   n/a E2021B10  
diameter diameter 6.162 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.244   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20356 (1998 HG147)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HG147 = 1979 YF7 = 1999 NJ38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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