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51895 Biblialexa (2001 QX33)
Classification: Main-belt Asteroid          SPK-ID: 2051895
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08370268575824091 5.7544e-08  
a 3.01103192006084 1.7823e-08 au
q 2.759000461447954 1.7532e-07 au
i 10.97501330285887 6.805e-06 deg
node 212.8744221832826 2.0224e-05 deg
peri 316.200031789566 3.7039e-05 deg
M 101.4195143005211 2.8768e-05 deg
tp 2458858.861337839658
(2020-Jan-10.36133784)
0.00015375 TDB
period 1908.409044478423
5.22
1.6945e-05
4.639e-08
d
yr
n .1886388041607661 1.6749e-09 deg/d
Q 3.263063378673725 1.9315e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1054  
   data-arc span      9042 days (24.76 yr)  
   first obs. used      1996-10-03  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53913  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:51:37  

Additional Information
 Earth MOID = 1.77555 au 
 Jupiter MOID = 1.74989 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457031.5 (2015-Jan-09.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .085234774526056 5.718e-08  
q 2.753612727496909 1.7478e-07 au
tp 2456946.389547458959
(2014-Oct-15.88954746)
0.00015779 TDB
node 212.9131827999031 2.0225e-05 deg
peri 315.3452582505193 3.6734e-05 deg
i 10.9762769354514 6.8055e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1054  
   data-arc span      9042 days (24.76 yr)  
   first obs. used      1996-10-03  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53913  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:51:37  

Additional Information
 Jupiter MOID = 1.74989 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.269556940242412E-15 -9.949200388744779E-15 4.555242054817719E-12 -7.306222820131116E-15 8.488687473846759E-13 -3.540609197341706E-15
q -9.949200388744779E-15 3.054728454492021E-14 -1.472305383628953E-11 2.168907871394524E-14 -2.748800064603211E-12 1.177538168686089E-14
tp 4.555242054817719E-12 -1.472305383628953E-11 2.489713295130755E-8 -1.027512220255439E-11 4.849903611420497E-9 -1.149621316073049E-11
node -7.306222820131116E-15 2.168907871394524E-14 -1.027512220255439E-11 4.090668195614796E-10 -4.031421073924821E-10 -4.548826194045963E-11
peri 8.488687473846759E-13 -2.748800064603211E-12 4.849903611420497E-9 -4.031421073924821E-10 1.349393975487989E-9 4.258581795470681E-11
i -3.540609197341706E-15 1.177538168686089E-14 -1.149621316073049E-11 -4.548826194045963E-11 4.258581795470681E-11 4.631490333642788E-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 14.29   n/a E2021B10  
diameter diameter 4.847 km 0.260 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.172   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

51895 Biblialexa           Discovered 2001 Aug. 19 by P. Pravec and P. Kušnirák at Ondřejov.
The new Bibliotecha Alexandrina, opened in 2002, is an extraordinary cultural and scientific institution. It is a revival of the old library at Alexandria, more than 2300 years old, that was tragically destroyed in the seventh century. Tens of thousands of volumes were then lost, including many astronomical papers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

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