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173871 (2001 TW235)
Classification: Main-belt Asteroid          SPK-ID: 2173871
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09473555811767445 6.1404e-08  
a 3.063330519364609 2.5116e-08 au
q 2.773124192913698 1.8677e-07 au
i 10.83952378303267 6.0515e-06 deg
node 153.9610051366815 2.969e-05 deg
peri 229.7498934787494 3.9568e-05 deg
M 105.7771029149079 2.6266e-05 deg
tp 2458025.088707344937
(2017-Sep-28.58870735)
0.00014114 TDB
period 1958.345044886153
5.36
2.4085e-05
6.594e-08
d
yr
n .1838286878709509 2.2608e-09 deg/d
Q 3.353536845815521 2.7495e-08 au
  Orbit Determination Parameters
   # obs. used (total)      366  
   data-arc span      7633 days (20.90 yr)  
   first obs. used      1998-03-20  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57528  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:44:18  

Additional Information
 Earth MOID = 1.78818 au 
 Jupiter MOID = 2.14281 au 
 T_jup = 3.199 
[ 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 15.1   n/a MPO436863  
rotation period rot_per 5.250 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

173871 (2001 TW235)          Discovered 2001-Oct-15 by NEAT at Palomar
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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