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JPL Small-Body Database Browser
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32730 Lamarr (1951 RX)
Classification: Main-belt Asteroid          SPK-ID: 2032730
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090420128981736 5.549e-08  
a 2.213856829024337 7.0881e-09 au
q 1.751067741216722 1.2305e-07 au
i 5.747427193570521 4.3912e-06 deg
node 338.394170340399 3.958e-05 deg
peri 38.98887818445262 4.0349e-05 deg
M 295.1163480416114 8.3903e-06 deg
tp 2459217.348044110882
(2021-Jan-02.84804411)
2.8342e-05 TDB
period 1203.158168870992
3.29
5.7782e-06
1.582e-08
d
yr
n .299212530250959 1.437e-09 deg/d
Q 2.676645916831953 8.5698e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      24721 days (67.68 yr)  
   first obs. used      1951-09-04  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48712  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:44:47  

Additional Information
 Earth MOID = .756521 au 
 Jupiter MOID = 2.80453 au 
 T_jup = 3.620 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456781.5 (2014-May-04.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2085214848174649 5.5273e-08  
q 1.751696725949967 1.2245e-07 au
tp 2456812.063386334867
(2014-Jun-03.56338634)
2.7465e-05 TDB
node 338.4622381499662 3.9581e-05 deg
peri 38.97939786427509 4.0361e-05 deg
i 5.748270350479504 4.3897e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1633  
   data-arc span      24721 days (67.68 yr)  
   first obs. used      1951-09-04  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48712  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:44:47  

Additional Information
 Jupiter MOID = 2.80453 au 
 T_jup = 3.620 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.055115767985746E-15 -6.76136384958154E-15 2.663109481608424E-13 -1.548837687353362E-15 -4.121555716444064E-14 -6.353700170739933E-15
q -6.76136384958154E-15 1.499506693067344E-14 -6.06513437027733E-13 4.82088620853585E-15 8.493472300201972E-14 1.429174412628012E-14
tp 2.663109481608424E-13 -6.06513437027733E-13 7.543067982880475E-10 -6.493467645295666E-12 2.222913602199427E-10 -1.927964883432556E-12
node -1.548837687353362E-15 4.82088620853585E-15 -6.493467645295666E-12 1.566648075727017E-9 -1.560448220307169E-9 5.596594822907651E-11
peri -4.121555716444064E-14 8.493472300201972E-14 2.222913602199427E-10 -1.560448220307169E-9 1.62905029299863E-9 -5.60544441428686E-11
i -6.353700170739933E-15 1.429174412628012E-14 -1.927964883432556E-12 5.596594822907651E-11 -5.60544441428686E-11 1.926904012715087E-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 14.5   n/a MPO337529  
diameter diameter 3.064 km 0.695 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.327   0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

32730 Lamarr           Discovered 1951 Sept. 4 by K. Reinmuth at Heidelberg.
Hedy Lamarr (1914-2000) was a Austrian-American inventor and actress. Along with George Antheil, she developed technology for a radio guidance system to assist the Allied war effort in WWII. These technologies are used in current Bluetooth systems.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2019-08-27Last Updated: 2019-09-23

Alternate Designations
 1951 RX = 1961 VS = 1997 TF1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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