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52172 (2166 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2052172
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06943185598683349 3.5578e-08  
a 3.183798259909828 2.1561e-08 au
q 2.962741237636638 1.1765e-07 au
i 4.622557979270607 5.8245e-06 deg
node 359.8446174848527 4.9374e-05 deg
peri 126.5130689747575 6.6389e-05 deg
M 321.0393007424485 4.3366e-05 deg
tp 2459225.064436974361
(2021-Jan-10.56443697)
0.00025017 TDB
period 2074.993489627904
5.68
2.1078e-05
5.771e-08
d
yr
n .1734945202476546 1.7624e-09 deg/d
Q 3.404855282183018 2.3058e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1186  
   data-arc span      16931 days (46.35 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53965  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 10:23:04  

Additional Information
 Earth MOID = 1.98082 au 
 Jupiter MOID = 1.62826 au 
 T_jup = 3.190 
[ 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 14.0   n/a MPO365859  
diameter diameter 10.367 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.045   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52172 (2166 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2166 T-2 = 1999 FS24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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