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5644 Maureenbell (1990 QG2)
Classification: Main-belt Asteroid          SPK-ID: 2005644
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1115813099337598 3.2507e-08  
a 3.125218438775442 1.5801e-08 au
q 2.776502471547739 1.008e-07 au
i 14.33059276722071 3.9063e-06 deg
node 165.9838540598869 1.4762e-05 deg
peri 263.1584954869187 2.3759e-05 deg
M 64.80751274028108 1.7627e-05 deg
tp 2458637.219700468547
(2019-Jun-02.71970047)
9.9028e-05 TDB
period 2017.989925881485
5.52
1.5304e-05
4.19e-08
d
yr
n .1783953405231927 1.3529e-09 deg/d
Q 3.473934406003146 1.7564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2448  
   data-arc span      25101 days (68.72 yr)  
   first obs. used      1951-08-08  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46147  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:24:04  

Additional Information
 Earth MOID = 1.83598 au 
 Jupiter MOID = 1.90183 au 
 T_jup = 3.157 
[ 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 12.1   n/a MPO337301  
diameter diameter 15.926 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.090   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5644 Maureenbell           Discovered 1990 Aug. 22 by H. E. Holt at Palomar.
Maureen E. Ockert-Bell (b. 1961), an image-processing specialist at Cornell University, has published results on the physical and optical properties of the Saturnian, Uranian and Jovian ring systems, on the physical and radiative properties of dust in Mars' atmosphere, and on clouds in Earth's atmosphere.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990928/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1990 QG2 = 1979 SZ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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