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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208060242741487 3.1682e-08  
a 3.105996273325384 1.8868e-08 au
q 2.730773212134622 1.0411e-07 au
i 15.26633148039713 3.6592e-06 deg
node 107.7326434327645 1.6192e-05 deg
peri 194.6846325419955 2.427e-05 deg
M 318.2178222366182 1.9051e-05 deg
tp 2459432.553644735423
(2021-Aug-06.05364474)
0.00010643 TDB
period 1999.40061951406
5.47
1.8219e-05
4.988e-08
d
yr
n .1800539604151446 1.6407e-09 deg/d
Q 3.481219334516145 2.1148e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1573  
   data-arc span      8610 days (23.57 yr)  
   first obs. used      1997-01-14  
   last obs. used      2020-08-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50965  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:14:28  

Additional Information
 Earth MOID = 1.71566 au 
 Jupiter MOID = 1.74227 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 13.53   n/a E2021B10  
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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