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187457 (2005 XA17)
Classification: Main-belt Asteroid          SPK-ID: 2187457
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1062077838111472 3.143e-08  
a 3.090843509196507 2.8393e-08 au
q 2.762571869977677 9.8687e-08 au
i 3.205887122737659 3.7866e-06 deg
node 132.7336462702704 8.2892e-05 deg
peri 170.1424170010519 8.9452e-05 deg
M 54.95994182141759 3.0339e-05 deg
tp 2458897.489473475328
(2020-Feb-17.98947348)
0.00016925 TDB
period 1984.787209261066
5.43
2.7349e-05
7.488e-08
d
yr
n .1813796452940805 2.4993e-09 deg/d
Q 3.419115148415337 3.1409e-08 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      7732 days (21.17 yr)  
   first obs. used      1999-10-15  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49338  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:30  

Additional Information
 Earth MOID = 1.74531 au 
 Jupiter MOID = 1.78673 au 
 T_jup = 3.214 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457991.5 (2017-Aug-26.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .107795683440241 3.1396e-08  
q 2.757168734082452 9.9688e-08 au
tp 2458903.575864525342
(2020-Feb-24.07586453)
0.00016702 TDB
node 132.8278448454372 8.3091e-05 deg
peri 171.4508767195684 8.9524e-05 deg
i 3.20262604307949 3.7828e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      7732 days (21.17 yr)  
   first obs. used      1999-10-15  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49338  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:30  

Additional Information
 Jupiter MOID = 1.78673 au 
 T_jup = 3.214 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.857260848578807E-16 -3.024037389145235E-15 1.059242918321906E-12 4.338655814305106E-15 2.042825683842612E-13 -4.388521319635815E-16
q -3.024037389145235E-15 9.937618156438461E-15 -5.453216180213311E-12 -2.365359038528429E-14 -1.112512143846136E-12 1.588508408589521E-15
tp 1.059242918321906E-12 -5.453216180213311E-12 2.789548185314552E-8 1.340457546967756E-10 5.590627612395051E-9 9.328527330337833E-13
node 4.338655814305106E-15 -2.365359038528429E-14 1.340457546967756E-10 6.904157786970275E-9 -6.865716633556247E-9 7.952648176375521E-11
peri 2.042825683842612E-13 -1.112512143846136E-12 5.590627612395051E-9 -6.865716633556247E-9 8.014470517230542E-9 -7.925279815767929E-11
i -4.388521319635815E-16 1.588508408589521E-15 9.328527330337833E-13 7.952648176375521E-11 -7.925279815767929E-11 1.430945416664161E-11

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 15.69   n/a MPCxxxxx  

187457 (2005 XA17)          Discovered 2005-Dec-01 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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