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JPL Small-Body Database Browser
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(2016 GC221)
Classification: Apollo [NEO]          SPK-ID: 3751828
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1646846835536555 0.00013532  
a 1.031451648109193 0.00054545 au
q .8615873598394344 0.00031616 au
i 25.25798912362602 0.031687 deg
node 23.51370244586536 0.00051379 deg
peri 279.8413614887235 0.003116 deg
M 270.9665778791532 1.1159 deg
tp 2459491.128575774802
(2021-Oct-03.62857577)
1.2611 TDB
period 382.623586372877
1.05
0.30351
0.000831
d
yr
n .9408724731600061 0.00074633 deg/d
Q 1.201315936378952 0.00063528 au
  Orbit Determination Parameters
   # obs. used (total)      71  
   data-arc span      2 days  
   first obs. used      2016-04-13  
   last obs. used      2016-04-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .37742  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 16:59:44  

Additional Information
 Earth MOID = .0192628 au 
 Jupiter MOID = 3.96159 au 
 T_jup = 5.839 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 24.8   n/a MPO380437  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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