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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1649996653610525 4.4528e-08  
a 2.436767984315572 9.4916e-09 au
q 2.034702082340976 1.0679e-07 au
i 4.316741954226438 4.9663e-06 deg
node 179.1258093234849 3.9318e-05 deg
peri 21.01639629689691 4.0609e-05 deg
M 207.0824320202379 9.9077e-06 deg
tp 2459590.666533598799
(2022-Jan-11.16653360)
3.9118e-05 TDB
period 1389.375693731186
3.80
8.1178e-06
2.223e-08
d
yr
n .2591091823646458 1.5139e-09 deg/d
Q 2.838833886290169 1.1058e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1719  
   data-arc span      16002 days (43.81 yr)  
   first obs. used      1976-04-01  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51843  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:55:15  

Additional Information
 Earth MOID = 1.03305 au 
 Jupiter MOID = 2.11718 au 
 T_jup = 3.481 
[ 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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