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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .169585219390583 3.6209e-08  
a 2.2464831499527 1.1369e-08 au
q 1.865512812110723 8.261e-08 au
i 5.661488597679041 5.2882e-06 deg
node 236.9439306443309 4.9215e-05 deg
peri 45.32150284801714 5.4348e-05 deg
M 9.79801676308273 2.7154e-05 deg
tp 2458967.027445879359
(2020-Apr-27.52744588)
9.2641e-05 TDB
period 1229.852915626116
3.37
9.3364e-06
2.556e-08
d
yr
n .2927179302711371 2.2222e-09 deg/d
Q 2.627453487794676 1.3297e-08 au
  Orbit Determination Parameters
   # obs. used (total)      821  
   data-arc span      10428 days (28.55 yr)  
   first obs. used      1990-10-10  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58488  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:29:13  

Additional Information
 Earth MOID = .854309 au 
 Jupiter MOID = 2.50792 au 
 T_jup = 3.605 
[ 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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