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129127 (2004 XA167)
Classification: Main-belt Asteroid          SPK-ID: 2129127
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1391870699922349 5.0632e-08  
a 2.613128548199115 1.9037e-08 au
q 2.249414842062218 1.3807e-07 au
i 4.330426649157825 4.6184e-06 deg
node 126.4472706994271 6.625e-05 deg
peri 231.9908885971703 6.7742e-05 deg
M 300.5153006790602 1.6239e-05 deg
tp 2459255.442569526552
(2021-Feb-09.94256953)
7.0852e-05 TDB
period 1542.906429338719
4.22
1.6861e-05
4.616e-08
d
yr
n .233325879751693 2.5497e-09 deg/d
Q 2.976842254336012 2.1687e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      9148 days (25.05 yr)  
   first obs. used      1995-08-26  
   last obs. used      2020-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55633  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:51:42  

Additional Information
 Earth MOID = 1.24842 au 
 Jupiter MOID = 2.4657 au 
 T_jup = 3.391 
[ show covariance matrix ]

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 15.6   n/a MPO296940  
rotation period rot_per 2.071 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

129127 (2004 XA167)          Discovered 2004-Dec-02 by NEAT at Palomar
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2004 XA167 = 1998 HQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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