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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1206330743647056 3.2716e-08  
a 3.105629396107454 1.9745e-08 au
q 2.730987774217608 1.0618e-07 au
i 15.26636423533234 3.8966e-06 deg
node 107.7326932952572 1.6595e-05 deg
peri 194.6985763940883 2.4963e-05 deg
M 282.1737755961791 1.9285e-05 deg
tp 2459432.661755821701
(2021-Aug-06.16175582)
0.00010816 TDB
period 1999.046379129938
5.47
1.9064e-05
5.219e-08
d
yr
n .1800858668205016 1.7174e-09 deg/d
Q 3.4802710179973 2.2127e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1449  
   data-arc span      8505 days (23.29 yr)  
   first obs. used      1997-01-14  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52025  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:41:28  

Additional Information
 Earth MOID = 1.71785 au 
 Jupiter MOID = 1.7437 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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