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JPL Small-Body Database Browser
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59436 (1999 GE21)
Classification: Main-belt Asteroid          SPK-ID: 2059436
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839052542888205 5.3209e-08  
a 2.470433084739037 1.145e-08 au
q 2.01610746008659 1.3019e-07 au
i 15.35694796002864 5.4081e-06 deg
node 49.93100309028093 2.21e-05 deg
peri 246.0856844913445 2.6281e-05 deg
M 89.21429015173923 1.4379e-05 deg
tp 2458649.028598837572
(2019-Jun-14.52859884)
5.6499e-05 TDB
period 1418.267232785993
3.88
9.8601e-06
2.7e-08
d
yr
n .253830866058175 1.7647e-09 deg/d
Q 2.924758709391485 1.3556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1092  
   data-arc span      7566 days (20.71 yr)  
   first obs. used      1999-03-20  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50372  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 06:10:25  

Additional Information
 Earth MOID = 1.05298 au 
 Jupiter MOID = 2.34854 au 
 T_jup = 3.412 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO502546  
diameter diameter 6.723 km 0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59436 (1999 GE21)          Discovered 1999-Apr-15 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 GE21 = 2000 SQ220 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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