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43173 (1999 XK177)
Classification: Main-belt Asteroid          SPK-ID: 2043173
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06223379252014711 2.8185e-08  
a 3.159335829865257 2.064e-08 au
q 2.962718379327955 8.5441e-08 au
i 16.84812528729512 9.642e-07 deg
node 86.40549956504599 4.1999e-06 deg
peri 204.6839943185481 1.5711e-05 deg
M 73.61145749063576 1.3689e-05 deg
tp 2458781.093620543198
(2019-Oct-24.59362054)
7.6199e-05 TDB
period 2051.124943744744
5.62
2.01e-05
5.503e-08
d
yr
n .1755134425613035 1.7199e-09 deg/d
Q 3.355953280402558 2.1924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2050  
   data-arc span      8171 days (22.37 yr)  
   first obs. used      1998-09-28  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:16:54  

Additional Information
 Earth MOID = 1.95119 au 
 Jupiter MOID = 1.77525 au 
 T_jup = 3.136 
[ 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 12.54   n/a E2021B10  
diameter diameter 17.783 km 5.480 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.070   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

43173 (1999 XK177)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20020624/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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