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17941 Horbatt (1999 JW2)
Classification: Main-belt Asteroid          SPK-ID: 2017941
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1552095765305845 1.5928e-08  
a 2.174833185051168 8.2105e-09 au
q 1.837278247374714 3.7617e-08 au
i 20.27751798393355 6.0718e-07 deg
node 65.80717082686492 9.1058e-07 deg
peri 358.6895352588917 7.8003e-06 deg
M 65.78369254841404 1.0816e-05 deg
tp 2458986.431335179810
(2020-May-16.93133518)
3.4685e-05 TDB
period 1171.486676254181
3.21
6.634e-06
1.816e-08
d
yr
n .3073018304835503 1.7402e-09 deg/d
Q 2.512388122727622 9.4849e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1849  
   data-arc span      11283 days (30.89 yr)  
   first obs. used      1990-05-03  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45197  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:38:35  

Additional Information
 Earth MOID = .850366 au 
 Jupiter MOID = 2.81846 au 
 T_jup = 3.591 
[ 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 14.07   n/a MPCxxxxx  
diameter diameter 3.269 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.499   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17941 Horbatt           Discovered 1999 May 6 by R. A. Tucker at the Goodricke-Pigott Onservatory.
A skilled mechanical craftsman, Paul Allen Horbatt (b. 1946) has contributed greatly to the development of the instrumentation at Goodricke-Pigott Observatory, near Tucson, where this minor planet was discovered. His familiarity with detector enclosures and vacuum seals greatly speeded the fabrication of the instruments.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1999 JW2 = 1990 JC1 = 1997 YC7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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