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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1426114726451153 4.3584e-08  
a 2.381883331395224 7.3602e-09 au
q 2.042199441836098 1.0369e-07 au
i .7914291835464026 4.5499e-06 deg
node 312.6827570876023 0.00025216 deg
peri 200.3427895369366 0.00025241 deg
M 217.4235726865285 1.1448e-05 deg
tp 2459532.270672275729
(2021-Nov-13.77067228)
4.3449e-05 TDB
period 1342.700512465248
3.68
6.2236e-06
1.704e-08
d
yr
n .2681163793845783 1.2428e-09 deg/d
Q 2.721567220954351 8.4099e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1483  
   data-arc span      10161 days (27.82 yr)  
   first obs. used      1991-12-28  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50325  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:32:05  

Additional Information
 Earth MOID = 1.05259 au 
 Jupiter MOID = 2.27104 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 14.7   n/a MPO365368  
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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