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(2017 GK4)
Classification: Apollo [NEO, PHA]          SPK-ID: 3773752
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3859429333786786 1.269e-07  
a 1.32008796452159 1.6009e-08 au
q .8106093431762385 1.6111e-07 au
i 16.35713277091443 1.5568e-05 deg
node 202.6512400145089 8.8477e-06 deg
peri 83.08836138215491 2.8964e-05 deg
M 339.2891628813724 1.9396e-05 deg
tp 2459032.371161172373
(2020-Jul-01.87116117)
3.0377e-05 TDB
period 553.9910316679063
1.52
1.0077e-05
2.759e-08
d
yr
n .6498300142443542 1.1821e-08 deg/d
Q 1.829566585866941 2.2187e-08 au
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      1348 days (3.69 yr)  
   first obs. used      2017-03-16  
   last obs. used      2020-11-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-23 05:21:34  

Additional Information
 Earth MOID = .0419121 au 
 Jupiter MOID = 3.42594 au 
 T_jup = 4.833 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458093.5 (2017-Dec-06.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3857174635320962 1.2695e-07  
q .8108205617135806 1.6103e-07 au
tp 2457924.589270077728
(2017-Jun-20.08927008)
1.421e-05 TDB
node 202.6637071907629 8.8482e-06 deg
peri 83.0745875110626 2.897e-05 deg
i 16.35830312728304 1.5567e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      1348 days (3.69 yr)  
   first obs. used      2017-03-16  
   last obs. used      2020-11-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32912  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-23 05:21:34  

Additional Information
 Jupiter MOID = 3.42594 au 
 T_jup = 4.833 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.611676665668624E-14 -2.042123710260594E-14 1.174917407443763E-12 -5.067847973525624E-13 3.353448735063229E-12 1.144320056685947E-12
q -2.042123710260594E-14 2.593020028852517E-14 -1.477301267682958E-12 6.422126667675761E-13 -4.246415423335514E-12 -1.440506772675407E-12
tp 1.174917407443763E-12 -1.477301267682958E-12 2.01933627952891E-10 -8.369085530780112E-11 3.573168996217926E-10 1.702408862100103E-10
node -5.067847973525624E-13 6.422126667675761E-13 -8.369085530780112E-11 7.829107134549332E-11 -1.864645532450077E-10 -9.759067993043792E-11
peri 3.353448735063229E-12 -4.246415423335514E-12 3.573168996217926E-10 -1.864645532450077E-10 8.392847337764452E-10 3.405591285345983E-10
i 1.144320056685947E-12 -1.440506772675407E-12 1.702408862100103E-10 -9.759067993043792E-11 3.405591285345983E-10 2.423377500361613E-10

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 21.7   n/a MPO438036  
rotation period rot_per 0.301 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Carbognani, A.; Bacci, P.; Buzzi, L. (2018) Minor Planet Bull. 45, 6-10.]

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