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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1115813129312285 3.3856e-08  
a 3.125218437362469 1.6493e-08 au
q 2.776502460924683 1.063e-07 au
i 14.33059255511847 4.1039e-06 deg
node 165.9838526671884 1.5605e-05 deg
peri 263.1584959114679 2.4566e-05 deg
M 64.8075141053006 1.8425e-05 deg
tp 2458637.219693063261
(2019-Jun-02.71969306)
0.00010326 TDB
period 2017.989924512925
5.52
1.5975e-05
4.374e-08
d
yr
n .1783953406441769 1.4122e-09 deg/d
Q 3.473934413800256 1.8334e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2220  
   data-arc span      24989 days (68.42 yr)  
   first obs. used      1951-08-08  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47886  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 20:07:40  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1962-Nov-08 08:15 00:01 Jupiter 1.95282551686901 1.95282510620792 1.95282592753065 5.22830687776659 5.1446777096265 2437976.843538306 1.21615631386475 124.183605171945 17.4008385257035 86.1762308917222 4342099.86579983 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 20:08:13 2020-Jan-28 20:08
2045-Nov-14 12:05 < 00:01 Jupiter 1.94726346259253 1.94726307063701 1.94726385454815 5.18843370708529 5.10390854421731 2468299.003250490 0.709531861960572 78.7770030622439 17.3183478538305 85.3537677702948 4267609.67483185 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 20:08:13 2020-Jan-28 20:08
2128-Nov-22 00:18 00:03 Jupiter 1.93043171076653 1.93043112124858 1.93043230029292 5.13531238119326 5.04914705730685 2498621.512188339 2.60446996137248 261.849536320815 17.2331249778817 85.4212367404475 4166212.23859436 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 20:08:13 2020-Jan-28 20:08
2139-Apr-07 03:07 00:03 Jupiter 1.99546278387606 1.9954618432875 1.99546372446791 3.61506846232866 3.4956789812886 2502409.629615983 3.20481056131224 152.983977786476 24.4119629192457 -68.5244366464267 2277009.26109555 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 20:08:13 2020-Jan-28 20:08

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