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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06948616411849858 3.542e-08  
a 3.184202590880564 1.9658e-08 au
q 2.962944567064089 1.1745e-07 au
i 4.622662259013724 4.9953e-06 deg
node 359.8373959292219 4.6354e-05 deg
peri 126.3793548913373 6.1149e-05 deg
M 355.8610356936871 3.7628e-05 deg
tp 2459224.361000196950
(2021-Jan-09.86100020)
0.00021689 TDB
period 2075.388777284284
5.68
1.9219e-05
5.262e-08
d
yr
n .1734614757197792 1.6063e-09 deg/d
Q 3.405460614697039 2.1024e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1404  
   data-arc span      17349 days (47.50 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51486  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 06:17:14  

Additional Information
 Earth MOID = 1.98097 au 
 Jupiter MOID = 1.62726 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 14.07   n/a MPCxxxxx  
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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