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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09512690570308775 3.4936e-08  
a 3.236497193530158 1.777e-08 au
q 2.928619230192906 1.0926e-07 au
i 2.757367589844637 4.1307e-06 deg
node 88.62853613805642 7.7246e-05 deg
peri 28.94051105620833 8.0216e-05 deg
M 154.8202331005559 2.2766e-05 deg
tp 2458285.888842202583
(2018-Jun-16.38884220)
0.00013183 TDB
period 2126.724719457148
5.82
1.7516e-05
4.796e-08
d
yr
n .1692743760893939 1.3941e-09 deg/d
Q 3.544375156867409 1.9461e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1726  
   data-arc span      13767 days (37.69 yr)  
   first obs. used      1982-12-13  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52602  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:03:16  

Additional Information
 Earth MOID = 1.94515 au 
 Jupiter MOID = 1.53006 au 
 T_jup = 3.176 
[ 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 13.38   n/a E2021B10  
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

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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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