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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 ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3859115349366542 1.2697e-07  
a 1.320053933681776 1.6166e-08 au
q .8106298939354732 1.6106e-07 au
i 16.35677330527762 1.5568e-05 deg
node 202.6430658881557 8.8379e-06 deg
peri 83.08974657417565 2.8964e-05 deg
M 109.2653710830461 2.1597e-05 deg
tp 2459032.361958433773
(2020-Jul-01.86195843)
3.0382e-05 TDB
period 553.9696096198373
1.52
1.0176e-05
2.786e-08
d
yr
n .6498551432217565 1.1937e-08 deg/d
Q 1.829477973428078 2.2404e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .32911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 18:59:32  

Additional Information
 Earth MOID = .041392 au 
 Jupiter MOID = 3.42518 au 
 T_jup = 4.833 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458093.5 (2017-Dec-06.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .385717463659158 1.2695e-07  
q .8108205615526225 1.6103e-07 au
tp 2457924.589270090106
(2017-Jun-20.08927009)
1.421e-05 TDB
node 202.6637072026456 8.8482e-06 deg
peri 83.07458745444448 2.897e-05 deg
i 16.35830310017341 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .32911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 18:59:32  

Additional Information
 Jupiter MOID = 3.42518 au 
 T_jup = 4.833 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.611676344774305E-14 -2.042123391015692E-14 1.174916027816079E-12 -5.067847234872628E-13 3.353445939151003E-12 1.144319570431225E-12
q -2.042123391015692E-14 2.593019705875944E-14 -1.477299688244343E-12 6.422126461265006E-13 -4.246412127496727E-12 -1.44050631771004E-12
tp 1.174916027816079E-12 -1.477299688244343E-12 2.019335300897043E-10 -8.369085380001024E-11 3.573165735257196E-10 1.702408334747375E-10
node -5.067847234872628E-13 6.422126461265006E-13 -8.369085380001024E-11 7.829109350783521E-11 -1.864645303427955E-10 -9.759070749480918E-11
peri 3.353445939151003E-12 -4.246412127496727E-12 3.573165735257196E-10 -1.864645303427955E-10 8.392838552431716E-10 3.405589791371021E-10
i 1.144319570431225E-12 -1.44050631771004E-12 1.702408334747375E-10 -9.759070749480918E-11 3.405589791371021E-10 2.4233775807685E-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 21.6   n/a E2020-WC4  
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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