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20216 (1997 GS27)
Classification: Main-belt Asteroid          SPK-ID: 2020216
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117372138785191 4.6501e-08  
a 2.63680994804612 1.9276e-08 au
q 2.327321924873878 1.2348e-07 au
i 13.52036904748209 7.9968e-06 deg
node 311.5472740418813 1.9471e-05 deg
peri 112.5424696154542 4.0292e-05 deg
M 274.1507033232549 3.6528e-05 deg
tp 2459573.450256694123
(2021-Dec-24.95025669)
0.00016065 TDB
period 1563.92769198135
4.28
1.7149e-05
4.695e-08
d
yr
n .2301896704341322 2.5241e-09 deg/d
Q 2.946297971218361 2.1538e-08 au
  Orbit Determination Parameters
   # obs. used (total)      745  
   data-arc span      13378 days (36.63 yr)  
   first obs. used      1984-01-25  
   last obs. used      2020-09-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55189  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:15:15  

Additional Information
 Earth MOID = 1.37868 au 
 Jupiter MOID = 2.33754 au 
 T_jup = 3.348 
[ 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 14.64   n/a E2021B10  
diameter diameter 3.366 km 0.435 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.171   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20216 (1997 GS27)          Discovered 1997-Apr-09 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 GS27 = 1984 BA6 = 1999 RO127 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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