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JPL Small-Body Database Browser
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17071 (1999 GK21)
Classification: Main-belt Asteroid          SPK-ID: 2017071
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1652216729034184 4.4543e-08  
a 2.436511054229023 9.597e-09 au
q 2.033946621801633 1.0685e-07 au
i 4.31712588238458 4.9727e-06 deg
node 179.1280765670328 3.9752e-05 deg
peri 21.05719870109702 4.1063e-05 deg
M 103.36300108625 9.8384e-06 deg
tp 2458201.646308843772
(2018-Mar-24.14630884)
3.7711e-05 TDB
period 1389.155958198497
3.80
8.2075e-06
2.247e-08
d
yr
n .2591501680393465 1.5311e-09 deg/d
Q 2.839075486656414 1.1183e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1700  
   data-arc span      15943 days (43.65 yr)  
   first obs. used      1976-04-01  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51779  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:16:34  

Additional Information
 Earth MOID = 1.0326 au 
 Jupiter MOID = 2.11807 au 
 T_jup = 3.482 
[ 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 14.1   n/a MPO299085  
diameter diameter 4.280 km 0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.291   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17071 (1999 GK21)          Discovered 1999-Apr-15 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 GK21 = 1976 GC1 = 1976 GC4 = 1987 BJ3 = 1996 QQ2 = 1997 WH47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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