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

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108625955872592 5.4773e-08  
a 3.128048300968577 3.0902e-08 AU
q 2.781264747200884 1.7973e-07 AU
i 14.3238253743694 6.6426e-06 deg
node 166.0035086178487 2.3739e-05 deg
peri 264.4267624200461 4.0323e-05 deg
M 66.66630778803294 3.0719e-05 deg
tp 2456626.292485048790
(2013-Nov-29.79248505)
0.00017325 JED
period 2020.73145869671
5.53
2.9944e-05
8.198e-08
d
yr
n .1781533109957052 2.64e-09 deg/d
Q 3.47483185473627 3.4328e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1108  
   data-arc span      22869 days (62.61 yr)  
   first obs. used      1951-08-08  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54198  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:14:21  

Additional Information
 Earth MOID = 1.84093 AU 
 T_jup = 3.157 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.0 mag n/a MPO247418  

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

[ show close-approach data ]
Alternate Designations
 1990 QG2 = 1979 SZ12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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