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173340 (1999 XY23)
Classification: Main-belt Asteroid          SPK-ID: 2173340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07348588957406431 2.4569e-07  
a 2.513425573699723 9.9222e-09 au
q 2.328724259538196 6.1593e-07 au
i 8.000530638658836 7.5374e-06 deg
node 235.1730825951151 2.668e-05 deg
peri 181.0063469341277 0.00013509 deg
M 45.61317615289018 0.00011696 deg
tp 2458816.089653098489
(2019-Nov-28.58965310)
0.00047305 TDB
period 1455.450606246314
3.98
8.6185e-06
2.36e-08
d
yr
n .2473460785649466 1.4647e-09 deg/d
Q 2.69812688786125 1.0651e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1057  
   data-arc span      10389 days (28.44 yr)  
   first obs. used      1991-11-07  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:27:07  

Additional Information
 Earth MOID = 1.34037 au 
 Jupiter MOID = 2.58114 au 
 T_jup = 3.443 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456821.5 (2014-Jun-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07263792182907278 2.4819e-07  
q 2.331070707368012 6.2227e-07 au
tp 2457356.050783845020
(2015-Nov-29.55078385)
0.00047348 TDB
node 235.2317801369278 2.6722e-05 deg
peri 179.8689831858473 0.00013453 deg
i 7.9928327345667 7.5336e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1057  
   data-arc span      10389 days (28.44 yr)  
   first obs. used      1991-11-07  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51437  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:27:07  

Additional Information
 Jupiter MOID = 2.58114 au 
 T_jup = 3.443 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.160038478302411E-14 -1.544284088596078E-13 -1.12867475145144E-10 -2.411560579124116E-13 -3.147964933156093E-11 4.981032951444623E-14
q -1.544284088596078E-13 3.872244801431199E-13 2.829465866557888E-10 6.044042363021277E-13 7.890740786096046E-11 -1.248541854297531E-13
tp -1.12867475145144E-10 2.829465866557888E-10 2.241848891745587E-7 4.517920489326795E-10 6.243557325688351E-8 -1.019684856808501E-10
node -2.411560579124116E-13 6.044042363021277E-13 4.517920489326795E-10 7.140603241025053E-10 -5.79335287208838E-10 -8.364140571502384E-11
peri -3.147964933156093E-11 7.890740786096046E-11 6.243557325688351E-8 -5.79335287208838E-10 1.809701325807356E-8 5.415765105092435E-11
i 4.981032951444623E-14 -1.248541854297531E-13 -1.019684856808501E-10 -8.364140571502384E-11 5.415765105092435E-11 5.675501967101496E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO352059  

173340 (1999 XY23)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 1999 XY23 = 1995 WL16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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