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49926 (1999 XK175)
Classification: Main-belt Asteroid          SPK-ID: 2049926
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2071602339982321 4.1131e-08  
a 2.326266067268023 7.5969e-09 au
q 1.844356244430632 9.5833e-08 au
i 5.630273335104705 5.0862e-06 deg
node 45.81628352209715 3.7254e-05 deg
peri 336.5494856689928 3.864e-05 deg
M 337.332132351104 9.9726e-06 deg
tp 2459082.101036087478
(2020-Aug-20.60103609)
3.5949e-05 TDB
period 1295.947790348194
3.55
6.3483e-06
1.738e-08
d
yr
n .2777889685689232 1.3608e-09 deg/d
Q 2.808175890105413 9.1707e-09 au
  Orbit Determination Parameters
   # obs. used (total)      855  
   data-arc span      9676 days (26.49 yr)  
   first obs. used      1994-05-04  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53604  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:07  

Additional Information
 Earth MOID = .849496 au 
 Jupiter MOID = 2.64815 au 
 T_jup = 3.539 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457438.5 (2016-Feb-20.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2087626542877841 4.1265e-08  
q 1.840148572780172 9.6329e-08 au
tp 2457785.936061434922
(2017-Feb-01.43606143)
3.5279e-05 TDB
node 45.85456592203823 3.72e-05 deg
peri 336.5303663783556 3.8561e-05 deg
i 5.636289272177746 5.0906e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      855  
   data-arc span      9676 days (26.49 yr)  
   first obs. used      1994-05-04  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53604  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:07  

Additional Information
 Jupiter MOID = 2.64815 au 
 T_jup = 3.539 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.702818142469788E-15 -3.967371199638049E-15 4.571683996795799E-13 -1.873317365530554E-14 1.364848893019964E-13 -5.759352693182429E-16
q -3.967371199638049E-15 9.279347784028739E-15 -1.076781044190144E-12 4.204104836598006E-14 -3.231380878917095E-13 1.478906969800347E-15
tp 4.571683996795799E-13 -1.076781044190144E-12 1.244631855306009E-9 -1.863220442264965E-11 3.685572228986221E-10 -2.686553716492036E-13
node -1.873317365530554E-14 4.204104836598006E-14 -1.863220442264965E-11 1.383854992307637E-9 -1.381134791232994E-9 1.019576690998502E-14
peri 1.364848893019964E-13 -3.231380878917095E-13 3.685572228986221E-10 -1.381134791232994E-9 1.486929050195099E-9 -5.686445642642357E-14
i -5.759352693182429E-16 1.478906969800347E-15 -2.686553716492036E-13 1.019576690998502E-14 -5.686445642642357E-14 2.591402291489582E-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 15.4   n/a MPO436133  

49926 (1999 XK175)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XK175 = 1994 JT4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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