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JPL Small-Body Database Browser
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17825 (1998 GQ8)
Classification: Main-belt Asteroid          SPK-ID: 2017825
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1203033375042648 3.4838e-08  
a 3.106543222655998 2.126e-08 au
q 2.732815704869227 1.1049e-07 au
i 15.26598754050616 4.2354e-06 deg
node 107.7299376990466 1.6601e-05 deg
peri 194.6014602497507 2.5203e-05 deg
M 210.2342553243297 1.9204e-05 deg
tp 2459432.502281380765
(2021-Aug-06.00228138)
0.00010853 TDB
period 1999.928768395682
5.48
2.053e-05
5.621e-08
d
yr
n .1800064110727241 1.8478e-09 deg/d
Q 3.480270740442769 2.3817e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1300  
   data-arc span      8163 days (22.35 yr)  
   first obs. used      1997-01-14  
   last obs. used      2019-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54082  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:24:17  

Additional Information
 Earth MOID = 1.71891 au 
 Jupiter MOID = 1.74134 au 
 T_jup = 3.155 
[ show covariance matrix ]

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 13.5   n/a MPO337409  
diameter diameter 12.559 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.027   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17825 (1998 GQ8)          Discovered 1998-Apr-02 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 GQ8 = 1997 AC17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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