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4179 Toutatis (1989 AC)
Classification: Apollo [NEO, PHA]          SPK-ID: 2004179
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 496 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6296101749717794 7.4251e-10  
a 2.533899735287975 1.7222e-10 AU
q .9385306795923676 1.824e-09 AU
i .4471200740920092 1.7929e-07 deg
node 124.3647650525852 3.2895e-05 deg
peri 278.7510722931275 3.2711e-05 deg
M 184.1319033248249 2.8212e-08 deg
tp 2457720.225895600331
(2016-Nov-27.72589560)
1.5269e-07 JED
period 1473.270748444353
4.03
1.502e-07
4.112e-10
d
yr
n .2443542711888693 2.4912e-11 deg/d
Q 4.129268790983582 2.8065e-10 AU
  Orbit Determination Parameters
   # obs. used (total)      5252  
   # delay obs. used      29  
   # Doppler obs. used      28  
   data-arc span      29317 days (80.27 yr)  
   first obs. used      1934-02-10  
   last obs. used      2014-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .40535  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:27:58  

Additional Information
 Earth MOID = .0060684 AU 
 T_jup = 3.138 
[ 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 15.30 mag n/a PDS3 (MPC 28111)  
magnitude slope G 0.10   n/a PDS3 (MPC 28111) Fit
diameter diameter 5.4 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)
extent extent 1.70x2.03x4.26 km 0.08 Hudson et al. (2003) Icarus 161:346-355 dynamically equivalent, equal volume ellipsoid
rotation period rot_per 176. h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Nakamura, T.; Fuse, T. (1998) Publ. Astron. Soc. Japan 50, 531-536.]
[Pravec, P.; et al. (2005) Icarus 173, 108-131.]
SMASSII spectral type spec_B Sk   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4179 Toutatis (1989 AC)          Discovered 1989-Jan-04 by Pollas, C. at Caussols (010)
Reference: DISCOVERY.DBLast Updated: 2013-09-05

[ show close-approach data ]
Alternate Designations
 1989 AC = 1934 CT 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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