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129509 (1995 ST52)
Classification: Main-belt Asteroid          SPK-ID: 2129509
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06647493188109156 4.5015e-08  
a 2.611804458726622 1.9434e-08 au
q 2.438184935246039 1.2058e-07 au
i 3.37576654236715 6.4385e-06 deg
node 27.21126653386874 8.9382e-05 deg
peri 275.4962288529865 0.00010602 deg
M 20.08285855267411 5.561e-05 deg
tp 2458914.493268417311
(2020-Mar-05.99326842)
0.0002384 TDB
period 1541.733876607184
4.22
1.7208e-05
4.711e-08
d
yr
n .2335033337869139 2.6062e-09 deg/d
Q 2.785423982207205 2.0726e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      9070 days (24.83 yr)  
   first obs. used      1995-09-29  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54584  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:40:54  

Additional Information
 Earth MOID = 1.42577 au 
 Jupiter MOID = 2.35088 au 
 T_jup = 3.404 
[ 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 16.5   n/a MPO475133  

129509 (1995 ST52)          Discovered 1995-Sep-29 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1995 ST52 = 1997 CD = 2004 XQ56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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