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17679 (1997 AK4)
Classification: Main-belt Asteroid          SPK-ID: 2017679
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1846602832600669 3.2394e-08  
a 3.017288002619416 1.7287e-08 au
q 2.460114745378513 9.5407e-08 au
i 2.493644587018384 3.7662e-06 deg
node 279.3127021899513 9.8836e-05 deg
peri 168.3063995543765 9.956e-05 deg
M 201.0187652860415 1.3544e-05 deg
tp 2459845.909143369789
(2022-Sep-23.40914337)
7.6053e-05 TDB
period 1914.359843541977
5.24
1.6452e-05
4.504e-08
d
yr
n .1880524193058305 1.6161e-09 deg/d
Q 3.574461259860319 2.0479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1376  
   data-arc span      18016 days (49.33 yr)  
   first obs. used      1971-02-18  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4928  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:13:41  

Additional Information
 Earth MOID = 1.47658 au 
 Jupiter MOID = 1.64623 au 
 T_jup = 3.220 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456743.5 (2014-Mar-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1890578302041638 3.2875e-08  
q 2.437895484823772 9.7732e-08 au
tp 2456024.738050789867
(2012-Apr-07.23805079)
5.9594e-05 TDB
node 279.4222101556369 9.9189e-05 deg
peri 167.1754755734197 9.9848e-05 deg
i 2.492218403284684 3.7663e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1376  
   data-arc span      18016 days (49.33 yr)  
   first obs. used      1971-02-18  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4928  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:13:41  

Additional Information
 Jupiter MOID = 1.64623 au 
 T_jup = 3.220 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.080734421085046E-15 -3.18206026388832E-15 -2.076129299646459E-13 -2.053335417624478E-16 -3.521287950507907E-14 -9.452827385125809E-17
q -3.18206026388832E-15 9.551631791136722E-15 8.00923262700877E-13 4.566386569293358E-15 1.495176550504922E-13 2.587794087863228E-16
tp -2.076129299646459E-13 8.00923262700877E-13 3.551477229479518E-9 3.656568690714589E-12 7.100416756780078E-10 1.257931115907746E-13
node -2.053335417624478E-16 4.566386569293358E-15 3.656568690714589E-12 9.838483271055286E-9 -9.827726505911432E-9 -1.826663799932654E-11
peri -3.521287950507907E-14 1.495176550504922E-13 7.100416756780078E-10 -9.827726505911432E-9 9.969597660496877E-9 1.826266541729896E-11
i -9.452827385125809E-17 2.587794087863228E-16 1.257931115907746E-13 -1.826663799932654E-11 1.826266541729896E-11 1.418537066931519E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO439216  

17679 (1997 AK4)          Discovered 1997-Jan-06 by Kobayashi, T. at Oizumi
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1997 AK4 = 1971 DJ = 1994 NK5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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