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17194 (1999 XA221)
Classification: Main-belt Asteroid          SPK-ID: 2017194
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .153970844208019 1.4075e-08  
a 2.583250622645577 1.1144e-08 au
q 2.185505343475947 3.5476e-08 au
i 14.03587944660631 7.5944e-07 deg
node 261.7400735915022 2.302e-06 deg
peri 89.72629449974612 8.3232e-06 deg
M 148.2237175062797 7.9937e-06 deg
tp 2458576.099213332158
(2019-Apr-02.59921333)
3.1681e-05 TDB
period 1516.5203449367
4.15
9.813e-06
2.687e-08
d
yr
n .2373855393381 1.5361e-09 deg/d
Q 2.980995901815207 1.286e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2024  
   data-arc span      25053 days (68.59 yr)  
   first obs. used      1952-08-19  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41686  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:29:56  

Additional Information
 Earth MOID = 1.2323 au 
 Jupiter MOID = 2.5353 au 
 T_jup = 3.365 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457298.5 (2015-Oct-03.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551817061455907 1.4314e-08  
q 2.181477655459126 3.6201e-08 au
tp 2457057.262483715840
(2015-Feb-03.76248372)
2.7909e-05 TDB
node 261.8708219210801 2.3083e-06 deg
peri 89.05954123482847 8.1753e-06 deg
i 14.02353970700406 7.5903e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2024  
   data-arc span      25053 days (68.59 yr)  
   first obs. used      1952-08-19  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41686  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:29:56  

Additional Information
 Jupiter MOID = 2.5353 au 
 T_jup = 3.365 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.048958523856827E-16 -5.012943695098187E-16 -2.168697002756426E-13 5.136384660824467E-17 -7.267351397079071E-14 5.30418866834924E-17
q -5.012943695098187E-16 1.310478162341962E-15 6.038426680691765E-13 1.12346941907412E-16 1.997525339473953E-13 -2.917154807712796E-16
tp -2.168697002756426E-13 6.038426680691765E-13 7.789055572945716E-10 4.174512609811468E-12 2.168285495553309E-10 -4.012399962477303E-12
node 5.136384660824467E-17 1.12346941907412E-16 4.174512609811468E-12 5.328078354246949E-12 -3.983130806492263E-12 -8.915049708846599E-13
peri -7.267351397079071E-14 1.997525339473953E-13 2.168285495553309E-10 -3.983130806492263E-12 6.683561885545017E-11 -2.013490993182451E-13
i 5.30418866834924E-17 -2.917154807712796E-16 -4.012399962477303E-12 -8.915049708846599E-13 -2.013490993182451E-13 5.761290503632314E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.99   n/a E2021B10  
diameter diameter 6.667 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.274   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

17194 (1999 XA221)          Discovered 1999-Dec-14 by LINEAR at Socorro
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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