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173870 (2001 TZ220)
Classification: Main-belt Asteroid          SPK-ID: 2173870
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .262225262691402 4.0638e-08  
a 2.614640301001764 1.9174e-08 au
q 1.92901556122805 1.0447e-07 au
i 17.69316762083513 4.9116e-06 deg
node 8.129355629471103 1.7087e-05 deg
peri 218.4313875695636 2.0425e-05 deg
M 199.1366383761335 1.5133e-05 deg
tp 2459290.534798175262
(2021-Mar-17.03479818)
6.9725e-05 TDB
period 1544.245531334455
4.23
1.6987e-05
4.651e-08
d
yr
n .233123549782208 2.5643e-09 deg/d
Q 3.300265040775478 2.4202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      7665 days (20.99 yr)  
   first obs. used      1998-12-12  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53655  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:03:29  

Additional Information
 Earth MOID = .95073 au 
 Jupiter MOID = 1.79376 au 
 T_jup = 3.293 
[ 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 14.8   n/a MPO320790  
diameter diameter 5.870 km 1.870 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.062   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

173870 (2001 TZ220)          Discovered 2001-Oct-14 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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