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9331 Fannyhensel (1990 QM9)
Classification: Main-belt Asteroid          SPK-ID: 2009331
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05508917662127872 3.3795e-08  
a 2.746282345693616 1.3264e-08 au
q 2.5949919124998 9.3661e-08 au
i 4.436624761494562 4.7653e-06 deg
node 13.61186424832306 4.6779e-05 deg
peri 284.6898894021715 6.498e-05 deg
M 272.1694147182734 4.6939e-05 deg
tp 2459606.064077270547
(2022-Jan-26.56407727)
0.00021742 TDB
period 1662.326026282021
4.55
1.2043e-05
3.297e-08
d
yr
n .2165640159079867 1.5689e-09 deg/d
Q 2.897572778887431 1.3995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1572  
   data-arc span      11160 days (30.55 yr)  
   first obs. used      1990-08-16  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52311  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 21:18:35  

Additional Information
 Earth MOID = 1.58194 au 
 Jupiter MOID = 2.21685 au 
 T_jup = 3.341 
[ show covariance matrix ]

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 14.36   n/a E2021B10  
diameter diameter 3.605 km 0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9331 Fannyhensel           Discovered 1990 Aug. 16 by E. W. Elst at the European Southern Observatory.
Fanny Hensel (1805-1847) was the sister of Felix Mendelssohn-Bartholdy and wife of painter Wilhelm Hensel. She was an accomplished composer of lieder, chamber music and choral pieces. She also composed an oratorio.
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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Alternate Designations
 1990 QM9 = 1997 CA6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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