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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2421396938220765 7.7105e-08  
a 3.139876815214174 2.2936e-08 au
q 2.379588004539177 2.4652e-07 au
i 29.62426090489307 9.8745e-06 deg
node 185.7331666679379 1.2058e-05 deg
peri 162.6979598122486 2.0225e-05 deg
M 320.1817105067812 1.5902e-05 deg
tp 2459621.274707332419
(2022-Feb-10.77470733)
9.089e-05 TDB
period 2032.20418731075
5.56
2.2268e-05
6.097e-08
d
yr
n .1771475535026793 1.9411e-09 deg/d
Q 3.900165625889171 2.849e-08 au
  Orbit Determination Parameters
   # obs. used (total)      382  
   data-arc span      22230 days (60.86 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54682  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:39:05  

Additional Information
 Earth MOID = 1.38516 au 
 Jupiter MOID = 1.61402 au 
 T_jup = 2.968 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457573.5 (2016-Jul-04.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2411761463725894 7.7372e-08  
q 2.383770602603804 2.472e-07 au
tp 2457591.113335990679
(2016-Jul-21.61333599)
8.2799e-05 TDB
node 185.7533406665858 1.2057e-05 deg
peri 162.9608472724381 2.0223e-05 deg
i 29.61521270546753 9.8725e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      382  
   data-arc span      22230 days (60.86 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54682  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:39:05  

Additional Information
 Jupiter MOID = 1.61402 au 
 T_jup = 2.968 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.986471558730269E-15 -1.908005120643555E-14 3.298837199313998E-12 -2.415831554902786E-14 7.991097396171324E-13 4.026603824510648E-15
q -1.908005120643555E-14 6.111014491142295E-14 -1.00008281913606E-11 8.193929132560167E-14 -2.467574867263193E-12 -2.037246149280237E-15
tp 3.298837199313998E-12 -1.00008281913606E-11 6.855737516417964E-9 -1.444135634446829E-11 1.370590969509618E-9 2.893667323221347E-11
node -2.415831554902786E-14 8.193929132560167E-14 -1.444135634446829E-11 1.453832989591771E-10 -1.291018856155966E-10 5.151829890332928E-11
peri 7.991097396171324E-13 -2.467574867263193E-12 1.370590969509618E-9 -1.291018856155966E-10 4.089884509953924E-10 -3.919195460882412E-11
i 4.026603824510648E-15 -2.037246149280237E-15 2.893667323221347E-11 5.151829890332928E-11 -3.919195460882412E-11 9.746548899220839E-11

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 15.06   n/a MPO614063  
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

[ show close-approach data ]
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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