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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534004284053169 3.9648e-08  
a 2.383460135711497 8.5695e-09 au
q 2.017836329806359 9.3203e-08 au
i 2.822557691897229 4.6904e-06 deg
node 32.68924893243833 7.0172e-05 deg
peri 192.2020218490631 7.1273e-05 deg
M 103.3437384946589 1.2774e-05 deg
tp 2458214.673606674915
(2018-Apr-06.17360668)
4.7412e-05 TDB
period 1344.03403263962
3.68
7.2485e-06
1.985e-08
d
yr
n .2678503603759028 1.4445e-09 deg/d
Q 2.749083941616635 9.8841e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1393  
   data-arc span      23625 days (64.68 yr)  
   first obs. used      1955-03-23  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55025  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:19:10  

Additional Information
 Earth MOID = 1.00888 au 
 Jupiter MOID = 2.23179 au 
 T_jup = 3.519 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456476.5 (2013-Jul-03.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1528591625462823 3.9716e-08  
q 2.020444063289768 9.328e-08 au
tp 2456870.033445648574
(2014-Jul-31.53344565)
4.7427e-05 TDB
node 32.73628375510906 7.0126e-05 deg
peri 192.0837957566746 7.1236e-05 deg
i 2.823417006611352 4.6901e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1393  
   data-arc span      23625 days (64.68 yr)  
   first obs. used      1955-03-23  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55025  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:19:10  

Additional Information
 Jupiter MOID = 2.23179 au 
 T_jup = 3.519 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.577360780353881E-15 -3.69387047540932E-15 -6.846195077478921E-13 2.273859836861601E-15 -1.973694182834292E-13 -4.490727451907443E-16
q -3.69387047540932E-15 8.701083316212773E-15 1.617273191540592E-12 -5.049682446244023E-15 4.610878793331186E-13 1.052271051168106E-15
tp -6.846195077478921E-13 1.617273191540592E-12 2.24933602400004E-9 2.164792242022602E-12 6.029220461920543E-10 8.378286837463112E-15
node 2.273859836861601E-15 -5.049682446244023E-15 2.164792242022602E-12 4.91759328842651E-9 -4.910641129801978E-9 -7.932646991607577E-11
peri -1.973694182834292E-13 4.610878793331186E-13 6.029220461920543E-10 -4.910641129801978E-9 5.074632691999465E-9 7.924280162962941E-11
i -4.490727451907443E-16 1.052271051168106E-15 8.378286837463112E-15 -7.932646991607577E-11 7.924280162962941E-11 2.199708062624552E-11

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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