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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1115813133829613 3.2964e-08  
a 3.12521843713818 1.6022e-08 au
q 2.776502459313656 1.0266e-07 au
i 14.33059284672151 3.9635e-06 deg
node 165.9838536995185 1.513e-05 deg
peri 263.1584947790747 2.4076e-05 deg
M 64.80751430591847 1.786e-05 deg
tp 2458637.219691977800
(2019-Jun-02.71969198)
0.00010026 TDB
period 2017.989924295686
5.52
1.5518e-05
4.249e-08
d
yr
n .1783953406633813 1.3718e-09 deg/d
Q 3.473934414962704 1.7809e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2291  
   data-arc span      25017 days (68.49 yr)  
   first obs. used      1951-08-08  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:43:03  

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 1.95282551994652 1.95282512971639 1.95282591017719 5.22830690113939 5.1446777335121 2437976.843536199 1.18787917843528 120.806307974028 16.8640573679209 86.5991506972236 4530256.96096349 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 17:43:20 2020-Feb-22 17:43
2045-Nov-14 12:05 < 00:01 Jupiter 1.94726346439375 1.94726307669146 1.94726385209626 5.18843378344304 5.10390862191844 2468299.003251379 0.688700075730621 76.6519513905477 16.7993895511241 84.6416744289757 4414670.68375648 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 17:43:20 2020-Feb-22 17:43
2128-Nov-22 00:18 00:03 Jupiter 1.93043171039339 1.9304311212978 1.93043229949732 5.13531244254156 5.04914711968528 2498621.512180172 2.53405624853672 255.09434949048 16.7299350181695 85.2109372681295 4331273.93001435 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 17:43:20 2020-Feb-22 17:43
2139-Apr-07 03:07 00:03 Jupiter 1.99546280008202 1.99546188648341 1.99546371368358 3.61506844833932 3.49567896780764 2502409.629604779 3.11985843393529 148.927991307761 24.3677653588452 -68.6554482756545 2324229.37530726 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 17:43:20 2020-Feb-22 17:43

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