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171989 (2001 TS203)
Classification: Main-belt Asteroid          SPK-ID: 2171989
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2264468881856638 4.557e-08  
a 3.171847827882111 2.7382e-08 au
q 2.45359275745975 1.4948e-07 au
i 10.70184233173591 5.7552e-06 deg
node 73.52122478533099 2.8097e-05 deg
peri 273.6324231600965 3.0396e-05 deg
M 117.3691442025393 1.2339e-05 deg
tp 2458327.804721803200
(2018-Jul-28.30472180)
6.98e-05 TDB
period 2063.321683022109
5.65
2.6718e-05
7.315e-08
d
yr
n .1744759447652945 2.2593e-09 deg/d
Q 3.890102898304471 3.3583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      745  
   data-arc span      7160 days (19.60 yr)  
   first obs. used      2000-05-28  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51004  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 16:40:59  

Additional Information
 Earth MOID = 1.47623 au 
 Jupiter MOID = 1.71561 au 
 T_jup = 3.135 
[ 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 MPO454178  
diameter diameter 7.141 km 0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.51712 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.046   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

171989 (2001 TS203)          Discovered 2001-Oct-11 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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