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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1741578803133011 3.9209e-08  
a 2.595199835168232 1.2846e-08 au
q 2.143225332885905 1.0772e-07 au
i 12.21850026523378 3.535e-06 deg
node 93.28655881232834 1.9439e-05 deg
peri 317.1386558186067 2.3985e-05 deg
M 274.2168991096872 1.6067e-05 deg
tp 2459364.376387616852
(2021-May-29.87638762)
6.9564e-05 TDB
period 1527.054841600621
4.18
1.1338e-05
3.104e-08
d
yr
n .2357479182755853 1.7504e-09 deg/d
Q 3.04717433745056 1.5083e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1929  
   data-arc span      24053 days (65.85 yr)  
   first obs. used      1954-12-22  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44486  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:03:19  

Additional Information
 Earth MOID = 1.17187 au 
 Jupiter MOID = 2.33107 au 
 T_jup = 3.364 
[ 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 13.4   n/a MPO347681  
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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