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15742 Laurabassi (1991 LB4)
Classification: Main-belt Asteroid          SPK-ID: 2015742
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03210261076252018 3.3679e-08  
a 2.688549789229412 1.1137e-08 au
q 2.602240321830124 9.4381e-08 au
i 14.23271889529035 3.7325e-06 deg
node 238.9442880810761 1.4355e-05 deg
peri 15.84427770475166 6.3727e-05 deg
M 292.108042637703 6.3571e-05 deg
tp 2459700.162652499349
(2022-Apr-30.66265250)
0.00028475 TDB
period 1610.184168301422
4.41
1.0005e-05
2.739e-08
d
yr
n .2235769094536328 1.3892e-09 deg/d
Q 2.7748592566287 1.1495e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1971  
   data-arc span      11950 days (32.72 yr)  
   first obs. used      1988-10-08  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47265  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:03:05  

Additional Information
 Earth MOID = 1.59065 au 
 Jupiter MOID = 2.24207 au 
 T_jup = 3.328 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457431.5 (2016-Feb-13.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0337632584947711 3.3471e-08  
q 2.597054352326245 9.3988e-08 au
tp 2458090.988369950333
(2017-Dec-03.48836995)
0.00027046 TDB
node 239.0156631812465 1.4372e-05 deg
peri 16.14767403332253 6.1118e-05 deg
i 14.22433414830223 3.7311e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1971  
   data-arc span      11950 days (32.72 yr)  
   first obs. used      1988-10-08  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47265  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:03:05  

Additional Information
 Jupiter MOID = 2.24207 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.120335087646144E-15 -3.127369904652742E-15 -1.908124487862957E-12 2.878191743930438E-15 -4.09301513102258E-13 -7.219383017310332E-16
q -3.127369904652742E-15 8.833813049892138E-15 5.685427643056934E-12 -6.962843608538223E-15 1.211139907481771E-12 2.521430052460256E-15
tp -1.908124487862957E-12 5.685427643056934E-12 7.315097734888584E-8 1.397085873951169E-12 1.607854435396349E-8 1.325495198751724E-11
node 2.878191743930438E-15 -6.962843608538223E-15 1.397085873951169E-12 2.065634120795186E-10 -1.996519599956686E-10 -7.116767317935794E-12
peri -4.09301513102258E-13 1.211139907481771E-12 1.607854435396349E-8 -1.996519599956686E-10 3.735424331637663E-9 9.769540878931323E-12
i -7.219383017310332E-16 2.521430052460256E-15 1.325495198751724E-11 -7.116767317935794E-12 9.769540878931323E-12 1.392088430168035E-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 13.88   n/a MPO636301  
diameter diameter 4.869 km 0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.247   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

15742 Laurabassi           Discovered 1991 June 6 by E. W. Elst at the European Southern Observatory.
Laura Bassi (1711-1778) was the first woman to receive a philosophical degree in physics at a European university (Bologna). Not allowed to teach, she gave lectures on physics and performed experimental demonstrations, based on Newton's Principia, at her home. Name suggested by K. Leterme.
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 2017-10-05Last Updated: 2017-10-09

Alternate Designations
 1991 LB4 = 1988 TE5 = 1997 WY33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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