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20333 Johannhuth (1998 HH51)
Classification: Main-belt Asteroid          SPK-ID: 2020333
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179495713614098 3.7868e-08  
a 2.278095789905848 7.6434e-09 au
q 2.009395367966221 8.6172e-08 au
i 3.950154719513923 3.8799e-06 deg
node 66.77531015378058 6.4832e-05 deg
peri 71.62170518907871 6.7437e-05 deg
M 223.1829032438532 1.7703e-05 deg
tp 2459477.803115090014
(2021-Sep-20.30311509)
6.2061e-05 TDB
period 1255.903870980842
3.44
6.3206e-06
1.73e-08
d
yr
n .2866461425258969 1.4426e-09 deg/d
Q 2.546796211845475 8.5449e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1598  
   data-arc span      11263 days (30.84 yr)  
   first obs. used      1989-10-03  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52223  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:34:30  

Additional Information
 Earth MOID = 1.02702 au 
 Jupiter MOID = 2.47319 au 
 T_jup = 3.595 
[ 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 14.5   n/a MPO435888  
rotation period rot_per 4.168 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

20333 Johannhuth           Discovered 1998 Apr. 25 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Johann Sigismund Huth (1763-1818) was a founder of astronomy at Kharkiv University, Russia (now Ukraine). He was a professor of this university during 1808-1811 and director of Tartu observatory (Estonia) from 1811 to 1818. Huth discovered four comets and estimated the diameter of (3) Juno by the eclipse method.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

Alternate Designations
 1998 HH51 = 1989 TN13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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