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JPL Small-Body Database Browser
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20326 (1998 HG37)
Classification: Main-belt Asteroid          SPK-ID: 2020326
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .232032978637593 4.6787e-08  
a 2.74515164531881 1.5643e-08 au
q 2.108185932243597 1.3083e-07 au
i 12.51421677224384 5.1454e-06 deg
node 15.99120817531163 2.0007e-05 deg
peri 307.498177270602 2.1581e-05 deg
M 129.9761444104417 9.2646e-06 deg
tp 2458000.696374315075
(2017-Sep-04.19637432)
4.2271e-05 TDB
period 1661.299511737373
4.55
1.4201e-05
3.888e-08
d
yr
n .2166978304974731 1.8523e-09 deg/d
Q 3.382117358394022 1.9273e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1322  
   data-arc span      15609 days (42.74 yr)  
   first obs. used      1976-06-04  
   last obs. used      2019-02-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48557  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:39:38  

Additional Information
 Earth MOID = 1.1226 au 
 Jupiter MOID = 2.09187 au 
 T_jup = 3.275 
[ 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 13.7   n/a MPO378762  
diameter diameter 7.319 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.100   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20326 (1998 HG37)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HG37 = 1999 RG185 = 1999 XL17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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