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172051 (2001 XA125)
Classification: Main-belt Asteroid          SPK-ID: 2172051
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1521384034761564 4.701e-08  
a 2.998598873675138 2.5626e-08 au
q 2.542396828368802 1.3802e-07 au
i 2.710108883354267 5.5391e-06 deg
node 130.6973488566123 0.00012792 deg
peri 340.3843753376468 0.0001298 deg
M 170.6564524871752 2.1205e-05 deg
tp 2458101.424424021216
(2017-Dec-13.92442402)
0.00010906 TDB
period 1896.601052202734
5.19
2.4313e-05
6.657e-08
d
yr
n .18981324490034 2.4332e-09 deg/d
Q 3.454800918981474 2.9525e-08 au
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      8652 days (23.69 yr)  
   first obs. used      1995-09-19  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:42:51  

Additional Information
 Earth MOID = 1.55923 au 
 Jupiter MOID = 1.65975 au 
 T_jup = 3.234 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456879.5 (2014-Aug-10.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1543971239548236 4.7157e-08  
q 2.528615781833366 1.3919e-07 au
tp 2456206.784059572602
(2012-Oct-06.28405957)
0.00010339 TDB
node 130.8495987545211 0.00012864 deg
peri 338.8719160753129 0.00013041 deg
i 2.704693916702106 5.528e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      8652 days (23.69 yr)  
   first obs. used      1995-09-19  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62674  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:42:51  

Additional Information
 Jupiter MOID = 1.65975 au 
 T_jup = 3.234 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.223792226859322E-15 -6.489048700264126E-15 5.40557304849357E-14 1.066552061143685E-14 -2.562166623570838E-14 6.742159973191324E-16
q -6.489048700264126E-15 1.93751008097829E-14 -1.495367520142536E-13 -3.155145643082488E-14 1.120886177283704E-13 -1.867102598961555E-15
tp 5.40557304849357E-14 -1.495367520142536E-13 1.068969489937652E-8 -3.266165716803717E-11 2.251001414755328E-9 -2.841098221638341E-13
node 1.066552061143685E-14 -3.155145643082488E-14 -3.266165716803717E-11 1.654951021095743E-8 -1.653753300656986E-8 1.011332516348985E-10
peri -2.562166623570838E-14 1.120886177283704E-13 2.251001414755328E-9 -1.653753300656986E-8 1.700573262521209E-8 -1.010740542964705E-10
i 6.742159973191324E-16 -1.867102598961555E-15 -2.841098221638341E-13 1.011332516348985E-10 -1.010740542964705E-10 3.055844996793586E-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 16.1   n/a MPO436855  

172051 (2001 XA125)          Discovered 2001-Dec-14 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2001 XA125 = 1995 SG61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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