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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2005058440181402 1.1228e-07  
a 10.60493625022278 1.5527e-06 au
q 8.478584556613294 2.2725e-06 au
i 20.37151915284857 4.6166e-06 deg
node 205.1983641466289 2.0402e-05 deg
peri 87.15004734682084 4.9831e-05 deg
M 231.7979848206059 7.3977e-05 deg
tp 2463888.635742113025
(2033-Oct-18.13574211)
0.0035422 TDB
period 12614.22345739084
34.54
0.0027703
7.585e-06
d
yr
n .02853921220089623 6.2678e-09 deg/d
Q 12.73128794383227 1.864e-06 au
  Orbit Determination Parameters
   # obs. used (total)      596  
   data-arc span      13958 days (38.21 yr)  
   first obs. used      1983-01-13  
   last obs. used      2021-04-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51312  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 20:01:06  

Additional Information
 Earth MOID = 7.53368 au 
 Jupiter MOID = 3.87016 au 
 T_jup = 3.113 
[ 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 9.02   n/a E2021B10  
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. 2020-October); 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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