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9962 Pfau (1991 YL1)
Classification: Main-belt Asteroid          SPK-ID: 2009962
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .142633642910657 3.6731e-08  
a 2.382137989874347 6.6406e-09 au
q 2.042364970462699 8.9003e-08 au
i .7914474564964153 3.3824e-06 deg
node 312.6840643880385 0.0002491 deg
peri 200.2862581983362 0.00024933 deg
M 271.1097863566232 1.1486e-05 deg
tp 2459532.089102247098
(2021-Nov-13.58910225)
4.337e-05 TDB
period 1342.915849970507
3.68
5.6154e-06
1.537e-08
d
yr
n .2680733867337304 1.1209e-09 deg/d
Q 2.721911009285994 7.5878e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1771  
   data-arc span      10632 days (29.11 yr)  
   first obs. used      1991-12-28  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48144  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:44:38  

Additional Information
 Earth MOID = 1.05258 au 
 Jupiter MOID = 2.26995 au 
 T_jup = 3.524 
[ 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 14.72   n/a E2021B10  
diameter diameter 3.062 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9962 Pfau           Discovered 1991 Dec. 28 by F. Borngen at Tautenburg.
Werner Pfau (b. 1936), director of the Jena University Observatory from 1990 to 2000 and a former chairman of the Astronomische Gesellschaft, is a well-known German expert on the physics of the interstellar medium and a promoter of the education of teachers of astronomy. The citation was provided by H. Zimmermann.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1991 YL1 = 1996 FJ3 = 1996 HN26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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