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17931 (1999 GA27)
Classification: Outer Main-belt Asteroid          SPK-ID: 2017931
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472093343014274 4.4787e-08  
a 3.207207870174613 1.862e-08 au
q 2.735076934639909 1.4997e-07 au
i 2.237232996172516 3.9182e-06 deg
node 115.0034009251246 0.00011147 deg
peri 100.6742633710308 0.00011243 deg
M 270.4164827232599 1.7599e-05 deg
tp 2459722.553124648210
(2022-May-23.05312465)
0.00010513 TDB
period 2097.920807158941
5.74
1.827e-05
5.002e-08
d
yr
n .1715984696712749 1.4944e-09 deg/d
Q 3.679338805709316 2.1362e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1663  
   data-arc span      9338 days (25.57 yr)  
   first obs. used      1995-08-25  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5278  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:38:26  

Additional Information
 Earth MOID = 1.72838 au 
 Jupiter MOID = 1.28964 au 
 T_jup = 3.174 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457014.5 (2014-Dec-23.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1499909212776868 4.4256e-08  
q 2.723039510426128 1.4846e-07 au
tp 2457627.368721754049
(2016-Aug-26.86872175)
9.4962e-05 TDB
node 115.0453644071431 0.00011138 deg
peri 101.1316572985766 0.00011233 deg
i 2.238092940917691 3.9235e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1663  
   data-arc span      9338 days (25.57 yr)  
   first obs. used      1995-08-25  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5278  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:38:26  

Additional Information
 Jupiter MOID = 1.28964 au 
 T_jup = 3.174 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.958550675445593E-15 -6.537990031719335E-15 -1.864963785132548E-12 1.786936019746399E-15 -2.414961410809857E-13 -1.492849854674464E-16
q -6.537990031719335E-15 2.20398129579228E-14 6.649336541320057E-12 -5.735953659937283E-15 8.620001459276867E-13 5.777768360009429E-16
tp -1.864963785132548E-12 6.649336541320057E-12 9.017750742474489E-9 5.947272053036477E-12 1.40636977293144E-9 6.215251254521187E-13
node 1.786936019746399E-15 -5.735953659937283E-15 5.947272053036477E-12 1.240600125668894E-8 -1.239531173147499E-8 6.153525407626311E-11
peri -2.414961410809857E-13 8.620001459276867E-13 1.40636977293144E-9 -1.239531173147499E-8 1.261722292173537E-8 -6.139708897323153E-11
i -1.492849854674464E-16 5.777768360009429E-16 6.215251254521187E-13 6.153525407626311E-11 -6.139708897323153E-11 1.539347409285804E-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 13.65   n/a MPCxxxxx  
diameter diameter 8.414 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17931 (1999 GA27)          Discovered 1999-Apr-07 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 GA27 = 2000 OF13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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