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JPL Small-Body Database Browser
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19704 Medlock (1999 TU8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2019704
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09595636353357205 3.6768e-08  
a 3.233480405742267 1.885e-08 au
q 2.923207384450179 1.1717e-07 au
i 2.758304266654164 4.236e-06 deg
node 88.62725532397289 8.5967e-05 deg
peri 28.59829708323225 8.8803e-05 deg
M 121.2796767871023 2.2893e-05 deg
tp 2458285.033494168880
(2018-Jun-15.53349417)
0.00013338 TDB
period 2123.751884261244
5.81
1.8571e-05
5.084e-08
d
yr
n .1695113269435556 1.4823e-09 deg/d
Q 3.543753427034354 2.0659e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1557  
   data-arc span      13559 days (37.12 yr)  
   first obs. used      1982-12-13  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53278  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:54:27  

Additional Information
 Earth MOID = 1.93986 au 
 Jupiter MOID = 1.53265 au 
 T_jup = 3.177 
[ show covariance matrix ]

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 13.4   n/a MPO439230  
diameter diameter 11.334 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.087   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19704 Medlock           Discovered 1999 Oct. 7 by S. Brady at Hudson.
Kevin Medlock (b. 1954) is a Californian award-winning telescope and instrument maker known for large aperture, research-grade telescopes. He constructed the 0.75-m reflector for the public program at Fremont Peak and helped restore the 0.5-m Brashear refractor at the Chabot Space and Science Center.
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

[ show close-approach data ]
Alternate Designations
 1999 TU8 = 1982 XX = 1984 EJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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