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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1539708439337585 1.4098e-08  
a 2.583250622466099 1.1154e-08 au
q 2.185505344032586 3.5514e-08 au
i 14.03587944758857 7.5958e-07 deg
node 261.7400735884154 2.3021e-06 deg
peri 89.72629465006625 8.3348e-06 deg
M 148.2237174394471 7.9965e-06 deg
tp 2458576.099213678767
(2019-Apr-02.59921368)
3.1699e-05 TDB
period 1516.520344778653
4.15
9.8222e-06
2.689e-08
d
yr
n .2373855393628395 1.5375e-09 deg/d
Q 2.980995900899611 1.2872e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2013  
   data-arc span      25048 days (68.58 yr)  
   first obs. used      1952-08-19  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41769  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:56:52  

Additional Information
 Earth MOID = 1.2323 au 
 Jupiter MOID = 2.5353 au 
 T_jup = 3.365 
[ 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 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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