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JPL Small-Body Database Browser
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11755 Paczynski (2691 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2011755
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1530893127652562 3.9596e-08  
a 2.384083657813314 8.4021e-09 au
q 2.019105929063795 9.3138e-08 au
i 2.822016316306504 4.6692e-06 deg
node 32.68904865293077 6.7284e-05 deg
peri 192.2338458953869 6.8357e-05 deg
M 210.4342433048171 1.2743e-05 deg
tp 2459559.112095077846
(2021-Dec-10.61209508)
4.8376e-05 TDB
period 1344.561473639114
3.68
7.1078e-06
1.946e-08
d
yr
n .2677452887487876 1.4154e-09 deg/d
Q 2.749061386562832 9.6883e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1420  
   data-arc span      23687 days (64.85 yr)  
   first obs. used      1955-03-23  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54959  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:08:49  

Additional Information
 Earth MOID = 1.01007 au 
 Jupiter MOID = 2.23117 au 
 T_jup = 3.519 
[ 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 14.7   n/a MPO296233  
diameter diameter 2.906 km 0.285 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.276   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11755 Paczynski           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Polish-born astrophysicist Bohdan Paczynski (b. 1940), at Princeton University since 1982, is known for his theoretical work on \gamma -ray bursters---he was an early proponent of their being at cosmological distances---and for leading searches for gravitational lensing by low-mass stars and substellar objects.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

Alternate Designations
 2691 P-L = 1999 CW20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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