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7400 Lenau (1987 QW1)
Classification: Main-belt Asteroid          SPK-ID: 2007400
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09840149649227782 4.6812e-08  
a 2.958002275894814 1.4077e-08 au
q 2.666930425319201 1.3593e-07 au
i 1.975505048730541 4.1204e-06 deg
node 160.901735669599 0.000112 deg
peri 184.4337778652854 0.00011398 deg
M 144.0786412964454 2.3188e-05 deg
tp 2458256.807697969523
(2018-May-18.30769797)
0.00011885 TDB
period 1858.215945971562
5.09
1.3264e-05
3.631e-08
d
yr
n .1937342109136703 1.3829e-09 deg/d
Q 3.249074126470428 1.5462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2070  
   data-arc span      15451 days (42.30 yr)  
   first obs. used      1977-10-16  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:28:24  

Additional Information
 Earth MOID = 1.65949 au 
 Jupiter MOID = 2.12427 au 
 T_jup = 3.259 
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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 13.3   n/a MPO365338  
diameter diameter 6.305 km 0.328 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.256   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7400 Lenau           Discovered 1987 Aug. 21 by E. W. Elst at the European Southern Observatory.
Nikolaus Lenau (N. F. Niembsch von Strehlenau, 1802-1850) was an Austrian poet. Unable to settle down to any profession, he started writing verses. Many poems (e.g., Herbst, Schilflieder) were inspired by his hopeless passion for Sophie von Löwenthal. Liszt used his Faust to compose the Mephisto Walzer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

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Alternate Designations
 1987 QW1 = 1977 UV = 1982 QV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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