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20215 (1997 GQ26)
Classification: Main-belt Asteroid          SPK-ID: 2020215
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1409971035459106 4.2687e-08  
a 2.797528557821235 1.5038e-08 au
q 2.403085134081472 1.1888e-07 au
i 7.143388119714216 5.2913e-06 deg
node 183.3829300138285 3.0693e-05 deg
peri 229.5516183084644 3.5964e-05 deg
M 142.5023758911662 1.7573e-05 deg
tp 2458523.981271039678
(2019-Feb-09.48127104)
8.2725e-05 TDB
period 1709.071451634749
4.68
1.3781e-05
3.773e-08
d
yr
n .2106406959496371 1.6985e-09 deg/d
Q 3.191971981560997 1.7159e-08 au
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      10604 days (29.03 yr)  
   first obs. used      1992-03-03  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53909  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:15:12  

Additional Information
 Earth MOID = 1.41997 au 
 Jupiter MOID = 2.20669 au 
 T_jup = 3.301 
[ 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 15.04   n/a E2021B10  
diameter diameter 3.547 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.169   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20215 (1997 GQ26)          Discovered 1997-Apr-07 by Spacewatch at Kitt Peak
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 GQ26 = 1999 RR163 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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