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JPL Small-Body Database Browser
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20437 Selohusa (1999 JH1)
Classification: Main-belt Asteroid          SPK-ID: 2020437
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300287007554877 6.0234e-08  
a 2.344671648181646 8.1365e-09 au
q 2.039797040070359 1.4212e-07 au
i 6.107814369054332 6.2819e-06 deg
node 193.1111914009085 3.6078e-05 deg
peri 175.1368554655519 3.8864e-05 deg
M 158.0363259732299 1.3971e-05 deg
tp 2458424.826949769655
(2018-Nov-02.32694977)
5.0913e-05 TDB
period 1311.358618385178
3.59
6.826e-06
1.869e-08
d
yr
n .2745244473577397 1.429e-09 deg/d
Q 2.649546256292933 9.1944e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1106  
   data-arc span      10135 days (27.75 yr)  
   first obs. used      1992-05-06  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:06:39  

Additional Information
 Earth MOID = 1.03895 au 
 Jupiter MOID = 2.81505 au 
 T_jup = 3.543 
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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 15.1   n/a MPO358825  
diameter diameter 2.694 km 0.422 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.222   0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20437 Selohusa           Discovered 1999 May 8 by the Catalina Sky Survey.
The South Euclid-Lyndhurst, Ohio, U.S.A. (SELOHUSA) region is in suburban Cleveland. Euclid bluestone quarries provided building stone for the development of northeast Ohio in the 19th-century. NASA astronaut Carl E. Walz and Charles F. Brush, inventor of arc-lamp street lighting, are from the region.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2019-05-18Last Updated: 2019-05-29

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Alternate Designations
 1999 JH1 = 1993 TU35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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