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20348 (1998 HK122)
Classification: Main-belt Asteroid          SPK-ID: 2020348
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1425953384272662 1.6712e-08  
a 2.526802872670546 9.7339e-09 au
q 2.166492561903101 4.0829e-08 au
i 15.17882938507813 3.4692e-07 deg
node 87.4193113289995 1.8211e-06 deg
peri 245.5944320895487 7.3479e-06 deg
M 130.7437910232948 6.9455e-06 deg
tp 2458667.687944639096
(2019-Jul-03.18794464)
2.6931e-05 TDB
period 1467.085652241414
4.02
8.4774e-06
2.321e-08
d
yr
n .2453844459933146 1.4179e-09 deg/d
Q 2.887113183437992 1.1122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2235  
   data-arc span      8803 days (24.10 yr)  
   first obs. used      1997-02-06  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43789  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:17:36  

Additional Information
 Earth MOID = 1.19917 au 
 Jupiter MOID = 2.4779 au 
 T_jup = 3.391 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.85   n/a E2021B10  
diameter diameter 4.830 km 0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.144   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20348 (1998 HK122)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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