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31824 Elatus (1999 UG5)
Classification: Centaur          SPK-ID: 2031824
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3804204304270674 1.8674e-06  
a 11.81363736440621 5.3636e-05 AU
q 7.319488353329513 1.219e-05 AU
i 5.244880710267942 1.6558e-05 deg
node 87.05739490279586 0.00017223 deg
peri 282.0201002245838 0.0003966 deg
M 145.8204584459897 0.0011434 deg
tp 2450993.054513167613
(1998-Jun-28.55451317)
0.0062387 JED
period 14831.1176518533
40.61
0.101
0.0002765
d
yr
n .02427328866580829 1.6531e-07 deg/d
Q 16.3077863754829 7.404e-05 AU
  Orbit Determination Parameters
   # obs. used (total)      333  
   data-arc span      3864 days (10.58 yr)  
   first obs. used      1998-09-19  
   last obs. used      2009-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      1  
   fit RMS      .6141  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:57:24  

Additional Information
 Earth MOID = 6.32374 AU 
 T_jup = 3.216 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.1 mag n/a PDS3 (MPO 18900)  
rotation period rot_per 26.82 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Gutierrez, P.J.; Ortiz, J.L.; Alexandrino, E.; Roos-Serote, M.; Doressoundiram, A. (2001) Astron. Astrophys. 371, L1-L4.]
[Bauer, J.M.; Meech, K.J.; Fernandez, Y.R.; Farnham, T.L.; Roush, T.L. (2002) Publ. Astron. Soc. Pacific 114, 1309-1321.]

31824 Elatus           Discovered 1999 Oct. 29 by the Catalina Sky Survey.
The name of the centaur Elatus is associated with woodlands and means "fir man", perhaps because he used to pull up whole fir trees and use them as weapons. During a battle with Hercules, Elatus was killed by a poisoned arrow that passed through his arm and continued to wound Chiron in the knee.
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 ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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