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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .130028702767699 5.704e-08  
a 2.344671647968604 7.8022e-09 au
q 2.039797035167044 1.3398e-07 au
i 6.107814081997335 6.0498e-06 deg
node 193.1111885869658 3.5594e-05 deg
peri 175.1368586621897 3.8247e-05 deg
M 158.0363257531964 1.3847e-05 deg
tp 2458424.826950649623
(2018-Nov-02.32695065)
5.0342e-05 TDB
period 1311.358618206448
3.59
6.5455e-06
1.792e-08
d
yr
n .2745244473951556 1.3703e-09 deg/d
Q 2.649546260770165 8.8167e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1215  
   data-arc span      10217 days (27.97 yr)  
   first obs. used      1992-05-06  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:12:26  

Additional Information
 Earth MOID = 1.03895 au 
 Jupiter MOID = 2.81505 au 
 T_jup = 3.543 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457046.5 (2015-Jan-24.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299546918002418 5.726e-08  
q 2.040223353546147 1.3455e-07 au
tp 2457110.597944769811
(2015-Mar-29.09794477)
5.0535e-05 TDB
node 193.1398914686086 3.5609e-05 deg
peri 174.5250144983008 3.8239e-05 deg
i 6.104887849886532 6.0521e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1215  
   data-arc span      10217 days (27.97 yr)  
   first obs. used      1992-05-06  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54394  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 05:12:26  

Additional Information
 Jupiter MOID = 2.81505 au 
 T_jup = 3.543 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.278757325539073E-15 -7.6945440280539E-15 -1.038575917853396E-12 -1.192174253582943E-14 -2.868219092924663E-13 -9.017767370416805E-16
q -7.6945440280539E-15 1.810299154106772E-14 2.399524092602858E-12 2.72575242992714E-14 6.62612864889801E-13 2.250978354452273E-15
tp -1.038575917853396E-12 2.399524092602858E-12 2.553796177532004E-9 3.669301573772654E-12 7.154963340111299E-10 -8.656985592846936E-13
node -1.192174253582943E-14 2.72575242992714E-14 3.669301573772654E-12 1.268007542599325E-9 -1.259225571914139E-9 -8.890200783929706E-11
peri -2.868219092924663E-13 6.62612864889801E-13 7.154963340111299E-10 -1.259225571914139E-9 1.462191394015294E-9 8.821710103451295E-11
i -9.017767370416805E-16 2.250978354452273E-15 -8.656985592846936E-13 -8.890200783929706E-11 8.821710103451295E-11 3.662777999262517E-11

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

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