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216550 (2001 TK172)
Classification: Main-belt Asteroid          SPK-ID: 2216550
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05410665781627653 5.6094e-08  
a 2.795489394783454 2.1082e-08 au
q 2.644234806670875 1.5227e-07 au
i 14.18504486674149 8.3804e-06 deg
node 54.85519769031259 2.0115e-05 deg
peri 253.269952331437 8.8576e-05 deg
M 99.04993352687484 8.9475e-05 deg
tp 2458730.782340686085
(2019-Sep-04.28234069)
0.00042276 TDB
period 1707.203138174026
4.67
1.9312e-05
5.287e-08
d
yr
n .2108712150008377 2.3854e-09 deg/d
Q 2.946743982896032 2.2222e-08 au
  Orbit Determination Parameters
   # obs. used (total)      359  
   data-arc span      7031 days (19.25 yr)  
   first obs. used      2001-10-11  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57095  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:55:18  

Additional Information
 Earth MOID = 1.66599 au 
 Jupiter MOID = 2.18073 au 
 T_jup = 3.281 
[ 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 15.77   n/a MPCxxxxx  
diameter diameter 4.752 km 0.316 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216550 (2001 TK172)          Discovered 2001-Oct-13 by LINEAR at Socorro
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

[ show close-approach data ]
Alternate Designations
 2001 TK172 = 2006 TT94 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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