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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1755410875114217 4.2653e-08  
a 2.594482236702182 1.3907e-08 au
q 2.139044003342415 1.1487e-07 au
i 12.21861067779956 4.162e-06 deg
node 93.29615240358213 2.6242e-05 deg
peri 316.8768025105935 3.0345e-05 deg
M 180.3359559970886 1.7119e-05 deg
tp 2459362.286284841024
(2021-May-27.78628484)
7.5626e-05 TDB
period 1526.421516696599
4.18
1.2273e-05
3.36e-08
d
yr
n .2358457320354688 1.8962e-09 deg/d
Q 3.049920470061949 1.6348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1504  
   data-arc span      23516 days (64.38 yr)  
   first obs. used      1954-12-22  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46649  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:51:46  

Additional Information
 Earth MOID = 1.16748 au 
 Jupiter MOID = 2.33 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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