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JPL Small-Body Database Browser
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4834 Thoas (1989 AM2)
Classification: Jupiter Trojan          SPK-ID: 2004834
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .137098029062934 6.1781e-08  
a 5.211984217160059 1.0838e-07 au
q 4.497431453480296 3.4474e-07 au
i 28.46177940212825 5.9115e-06 deg
node 76.01896699685948 1.11e-05 deg
peri 351.9962677357216 2.4067e-05 deg
M 276.2651776978786 2.7166e-05 deg
tp 2460011.396439713230
(2023-Mar-07.89643971)
0.00034839 TDB
period 4346.133523562072
11.90
0.00013556
3.711e-07
d
yr
n .0828322457302107 2.5836e-09 deg/d
Q 5.926536980839822 1.2323e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1501  
   data-arc span      16037 days (43.91 yr)  
   first obs. used      1975-12-02  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52457  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:39:53  

Additional Information
 Earth MOID = 3.51391 au 
 Jupiter MOID = .577914 au 
 T_jup = 2.741 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.1   n/a MPO421678  
diameter diameter 72.331 km 0.460 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 18.192 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[French, L.M.; Stephens, R.D.; Lederer, S.M.; Coley, D.R.; Rohl, D.A. (2011) Minor Planet Bull. 38, 116-120.]
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.]
[Stephens, R.D.; Coley, D.R.; Warner, B.D.; French, L.M. (2016) Minor Planet Bull. 43, 323-331.]
geometric albedo albedo 0.085   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

4834 Thoas (1989 AM2)          Discovered 1989-Jan-11 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 AM2 = 1975 XX3 = 1986 XN = 1987 WP2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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