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JPL Small-Body Database Browser
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32532 Thereus (2001 PT13)
Classification: Centaur          SPK-ID: 2032532
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2004810102599484 1.7813e-07  
a 10.61087670682726 3.5848e-06 au
q 8.483597424898774 2.6923e-06 au
i 20.36175163778223 1.1562e-05 deg
node 205.2486447072377 2.8568e-05 deg
peri 86.86114592121017 0.00010295 deg
M 220.8292948034664 0.00017583 deg
tp 2463881.071239856224
(2033-Oct-10.57123986)
0.0086141 TDB
period 12624.82390864542
34.56
0.0063978
1.752e-05
d
yr
n .02851524921099879 1.445e-08 deg/d
Q 12.73815598875574 4.3035e-06 au
  Orbit Determination Parameters
   # obs. used (total)      433  
   data-arc span      8252 days (22.59 yr)  
   first obs. used      1995-06-05  
   last obs. used      2018-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53678  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:32:15  

Additional Information
 Earth MOID = 7.53892 au 
 Jupiter MOID = 3.87165 au 
 T_jup = 3.114 
[ 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 9.1   n/a MPO319483  
diameter diameter 86.500 km 1.900 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)  
rotation period rot_per 8.335 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ortiz, J.L.; Baumont, S.; Gutierrez, P.J.; Roos-Serote, M. (2002) Astron. Astrophys. 388, 661-666.]
[Farnham, T.L.; Davies, J.K. (2003) Icarus 164, 418-427.]
[Ortiz, J.L.; Gutierrez, P.J.; Casanova, V.; Sota, A. (2003) Astron. Astrophys. 407, 1149-1155.]
[Rabinowitz, D.L.; Schaefer, B.E.; Tourtellotte, S.W. (2007) Astron. J. 133, 26-43.]
[Brucker, M.; Romanishin, W.J.; Tegler, S.C.; Consolmagno, S.J.; Grundy, W.M. (2008) Bull. Amer. Astron. Soc. 40, 483 (47.09)]
geometric albedo albedo 0.059   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)  

32532 Thereus           Discovered 2001 Aug. 9 by the Near-Earth Asteroid Tracking project at Palomar.
The centaur Thereus was a hunter who captured bears and carried them home, alive and struggling.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030614/MPCPages.arcLast Updated: 2005-04-26

[ show close-approach data ]
Alternate Designations
 2001 PT13 = 1995 MM6 = 1999 NE2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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