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11757 Salpeter (2799 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2011757
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2418063233818533 8.0289e-08  
a 3.138692526651336 2.3618e-08 au
q 2.379736826555677 2.5509e-07 au
i 29.62427206145331 1.0517e-05 deg
node 185.7406391937084 1.2387e-05 deg
peri 162.7558500740442 2.1085e-05 deg
M 249.9078039918568 1.6497e-05 deg
tp 2459621.620153112691
(2022-Feb-11.12015311)
9.6386e-05 TDB
period 2031.054545446887
5.56
2.2925e-05
6.277e-08
d
yr
n .1772478246864563 2.0007e-09 deg/d
Q 3.897648226746995 2.933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      21765 days (59.59 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:36:30  

Additional Information
 Earth MOID = 1.38607 au 
 Jupiter MOID = 1.61446 au 
 T_jup = 2.968 
[ 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 15.0   n/a MPO452336  
diameter diameter 6.697 km 1.888 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.032   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

11757 Salpeter           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Edwin E. Salpeter (b. 1924), born in Austria, educated in Australia and the U.K., has been at Cornell University since 1948. A generalist, he worked with Hans Bethe in quantum electrodynamics and nuclear physics and is best known for the triple- \alpha helium-burning reaction and for the initial mass function of stars.
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

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Alternate Designations
 2799 P-L = 5180 T-3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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