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JPL Small-Body Database Browser
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17924 (1999 GA17)
Classification: Main-belt Asteroid          SPK-ID: 2017924
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2086492475562325 3.4351e-08  
a 2.407094842121766 7.6023e-09 au
q 1.904856314516572 8.2726e-08 au
i 2.319121732928739 4.6863e-06 deg
node 53.08106789175918 7.9022e-05 deg
peri 225.1932299625136 7.9662e-05 deg
M 173.4639522476687 1.0317e-05 deg
tp 2458343.228249441815
(2018-Aug-12.72824944)
3.8429e-05 TDB
period 1364.074939691839
3.73
6.4622e-06
1.769e-08
d
yr
n .2639151189753023 1.2503e-09 deg/d
Q 2.909333369726961 9.1885e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1918  
   data-arc span      15039 days (41.17 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46772  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:15:13  

Additional Information
 Earth MOID = .889311 au 
 Jupiter MOID = 2.22735 au 
 T_jup = 3.491 
[ 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 14.3   n/a MPO449082  
diameter diameter 4.253 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.67 h n/a LCDB (Rev. 2019-August); 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:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.155   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17924 (1999 GA17)          Discovered 1999-Apr-15 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 GA17 = 1978 WX1 = 1981 RG6 = 1996 RG20 = 1999 GB25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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