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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2090420011972633 3.4123e-08  
a 2.213856833858841 6.6486e-09 au
q 1.751067770944752 7.8167e-08 au
i 5.747423400188384 3.8522e-06 deg
node 338.3941240122207 2.9366e-05 deg
peri 38.98893712189199 3.043e-05 deg
M 295.1163375873815 7.655e-06 deg
tp 2459217.348079760339
(2021-Jan-02.84807976)
2.5759e-05 TDB
period 1203.158172812082
3.29
5.4199e-06
1.484e-08
d
yr
n .2992125292708521 1.3479e-09 deg/d
Q 2.676645896772931 8.0384e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1990  
   data-arc span      25259 days (69.16 yr)  
   first obs. used      1951-09-04  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46499  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:54:22  

Additional Information
 Earth MOID = .756521 au 
 Jupiter MOID = 2.80453 au 
 T_jup = 3.620 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457342.5 (2015-Nov-16.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .209100701785358 3.4065e-08  
q 1.750804482449568 7.8005e-08 au
tp 2456812.690109526732
(2014-Jun-04.19010953)
2.6093e-05 TDB
node 338.4563803024985 2.9361e-05 deg
peri 39.12420124243886 3.0429e-05 deg
i 5.748331338707587 3.8525e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1990  
   data-arc span      25259 days (69.16 yr)  
   first obs. used      1951-09-04  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46499  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:54:22  

Additional Information
 Jupiter MOID = 2.80453 au 
 T_jup = 3.620 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.160419175208922E-15 -2.652491674670466E-15 -7.198883265359669E-14 -1.178452388686242E-16 -3.716491625820463E-14 -3.101453730291808E-15
q -2.652491674670466E-15 6.084702918937239E-15 1.249625140536773E-13 2.738286639081027E-16 7.652773244914859E-14 7.184715639842022E-15
tp -7.198883265359669E-14 1.249625140536773E-13 6.808193085131955E-10 -1.021545193212727E-13 2.126575425145404E-10 -3.342366769407228E-13
node -1.178452388686242E-16 2.738286639081027E-16 -1.021545193212727E-13 8.620916800855856E-10 -8.573732588896855E-10 6.745259114567888E-12
peri -3.716491625820463E-14 7.652773244914859E-14 2.126575425145404E-10 -8.573732588896855E-10 9.2590917487386E-10 -6.772749649949059E-12
i -3.101453730291808E-15 7.184715639842022E-15 -3.342366769407228E-13 6.745259114567888E-12 -6.772749649949059E-12 1.484180345866701E-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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