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175899 (1999 XW205)
Classification: Main-belt Asteroid          SPK-ID: 2175899
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09380461005937102 3.2074e-08  
a 2.597582117604332 1.4727e-08 au
q 2.353916939965262 8.2033e-08 au
i 21.77344995843498 6.4189e-06 deg
node 311.613123923447 1.0337e-05 deg
peri 105.8369118334034 6.1381e-05 deg
M 92.11850877811351 5.5491e-05 deg
tp 2459005.211797614165
(2020-Jun-04.71179761)
0.00023564 TDB
period 1529.157980598668
4.19
1.3005e-05
3.561e-08
d
yr
n .2354236805925438 2.0021e-09 deg/d
Q 2.841247295243402 1.6109e-08 au
  Orbit Determination Parameters
   # obs. used (total)      602  
   data-arc span      7787 days (21.32 yr)  
   first obs. used      1999-12-12  
   last obs. used      2021-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46278  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:29:26  

Additional Information
 Earth MOID = 1.45346 au 
 Jupiter MOID = 2.42781 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458072.5 (2017-Nov-15.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09276128942810062 3.2379e-08  
q 2.357333802256131 8.2795e-08 au
tp 2457473.926270925498
(2016-Mar-26.42627093)
0.00023921 TDB
node 311.6999214949007 1.0337e-05 deg
peri 105.3335816874705 6.2145e-05 deg
i 21.76049468010114 6.4188e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      602  
   data-arc span      7787 days (21.32 yr)  
   first obs. used      1999-12-12  
   last obs. used      2021-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46278  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:29:26  

Additional Information
 Jupiter MOID = 2.42781 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.048376247213345E-15 -2.646602332609812E-15 -2.480770587219214E-12 1.603151212564041E-15 -6.480094702290349E-13 -7.919858401093637E-15
q -2.646602332609812E-15 6.854998648308611E-15 6.400462522441966E-12 -5.027773663084028E-15 1.686613470668246E-12 2.048196918711809E-14
tp -2.480770587219214E-12 6.400462522441966E-12 5.721937098124354E-8 -8.104269264365311E-11 1.466728320043294E-8 5.497011285611909E-11
node 1.603151212564041E-15 -5.027773663084028E-15 -8.104269264365311E-11 1.068552471950583E-10 -1.195083091698447E-10 2.434264829936791E-11
peri -6.480094702290349E-13 1.686613470668246E-12 1.466728320043294E-8 -1.195083091698447E-10 3.862013910919444E-9 -8.419465139897504E-12
i -7.919858401093637E-15 2.048196918711809E-14 5.497011285611909E-11 2.434264829936791E-11 -8.419465139897504E-12 4.120059129786625E-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 15.77   n/a MPCxxxxx  

175899 (1999 XW205)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

Alternate Designations
 1999 XW205 = 2002 PY20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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