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JPL Small-Body Database Browser
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39536 Lenhof (1990 TA11)
Classification: Main-belt Asteroid          SPK-ID: 2039536
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1693256008882068 3.6593e-08  
a 2.245827865909172 1.1331e-08 au
q 1.865551713022622 8.3312e-08 au
i 5.66259353136158 5.3379e-06 deg
node 236.9507105882529 4.9288e-05 deg
peri 45.39731605127796 5.4438e-05 deg
M 252.5976595687887 2.6834e-05 deg
tp 2458967.253587479273
(2020-Apr-27.75358748)
9.2943e-05 TDB
period 1229.314845118309
3.37
9.3031e-06
2.547e-08
d
yr
n .2928460527663714 2.2162e-09 deg/d
Q 2.626104018795721 1.3249e-08 au
  Orbit Determination Parameters
   # obs. used (total)      812  
   data-arc span      10400 days (28.47 yr)  
   first obs. used      1990-10-10  
   last obs. used      2019-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:07:09  

Additional Information
 Earth MOID = .853801 au 
 Jupiter MOID = 2.50861 au 
 T_jup = 3.606 
[ 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 15.7   n/a MPO381562  
diameter diameter 1.712 km 0.360 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.380   0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39536 Lenhof           Discovered 1990 Oct. 10 by L. D. Schmadel and F. Börngen at Tautenburg.
Helmut Lenhof (b. 1924) is a retired professor of physics. He was one of the founders of the Carinthian Astronomical Association in Klagenfurt, Austria, and dedicated much of his time to astronomy. He still contributes a monthly column for their journal. Name proposed by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120703/MPCPages.arcLast Updated: 2012-07-09

Alternate Designations
 1990 TA11 = 1996 KB6 = 2000 RH32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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