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11401 Pierralba (1999 AF25)
Classification: Main-belt Asteroid          SPK-ID: 2011401
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1994082135400669 3.1487e-08  
a 2.252108755065213 6.8263e-09 au
q 1.803019771519715 7.1826e-08 au
i 4.973133646745737 3.6493e-06 deg
node 356.0050277319622 3.8066e-05 deg
peri 316.2060263590473 3.9125e-05 deg
M 340.4312054066693 8.902e-06 deg
tp 2459067.603324830989
(2020-Aug-06.10332483)
3.0502e-05 TDB
period 1234.475471850934
3.38
5.6126e-06
1.537e-08
d
yr
n .291621833085292 1.3259e-09 deg/d
Q 2.701197738610711 8.1875e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2257  
   data-arc span      17115 days (46.86 yr)  
   first obs. used      1973-09-27  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43633  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:24:17  

Additional Information
 Earth MOID = .793137 au 
 Jupiter MOID = 2.58621 au 
 T_jup = 3.595 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO473921  
diameter diameter 3.947 km 0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.238   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11401 Pierralba           Discovered 1999 Jan. 15 by the OCA-DLR Asteroid Survey at Caussols.
Pierre Albanese (b. 1992) showed a great interest in the sky, being able to recognize the major planets while he was only four years old. He made drawings inspired by the images obtained by his father, Caussols astronomer Dominique Albanese.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1999 AF25 = 1973 SM4 = 1983 RE6 = 1989 GW4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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