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59420 (1999 GR2)
Classification: Main-belt Asteroid          SPK-ID: 2059420
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1253142980321437 3.5617e-08  
a 2.404350904953064 1.0089e-08 au
q 2.103051359075922 8.7598e-08 au
i 3.487553896229391 3.5793e-06 deg
node 60.16360164942232 6.6602e-05 deg
peri 57.1695651285173 6.8623e-05 deg
M 299.1769309446369 1.8585e-05 deg
tp 2459230.570551505117
(2021-Jan-16.07055151)
7.1086e-05 TDB
period 1361.743164693841
3.73
8.5715e-06
2.347e-08
d
yr
n .2643670328838686 1.6641e-09 deg/d
Q 2.705650450830207 1.1354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1031  
   data-arc span      8057 days (22.06 yr)  
   first obs. used      1997-10-30  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5447  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 06:10:25  

Additional Information
 Earth MOID = 1.12173 au 
 Jupiter MOID = 2.37237 au 
 T_jup = 3.510 
[ 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 15.2   n/a MPO347917  
diameter diameter 5.670 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59420 (1999 GR2)          Discovered 1999-Apr-09 by Roe, J. M. at Oaxaca
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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