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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1530893173450914 3.8327e-08  
a 2.384083658654774 8.2225e-09 au
q 2.019105918857727 9.0442e-08 au
i 2.822016725065453 4.538e-06 deg
node 32.68904354749375 6.6741e-05 deg
peri 192.2338497545948 6.7794e-05 deg
M 210.43424400259 1.2708e-05 deg
tp 2459559.112092767481
(2021-Dec-10.61209277)
4.8287e-05 TDB
period 1344.561474350958
3.68
6.9559e-06
1.904e-08
d
yr
n .2677452886070367 1.3851e-09 deg/d
Q 2.749061398451822 9.4812e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1452  
   data-arc span      23975 days (65.64 yr)  
   first obs. used      1955-03-23  
   last obs. used      2020-11-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54897  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:46:58  

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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