Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1370980558821605 5.285e-08  
a 5.211984255513124 1.0024e-07 au
q 4.497431346793845 3.1886e-07 au
i 28.46178465177819 5.3162e-06 deg
node 76.0189681143756 1.0954e-05 deg
peri 351.9962602891902 2.3427e-05 deg
M 276.265184713963 2.4883e-05 deg
tp 2460011.396366169117
(2023-Mar-07.89636617)
0.00031741 TDB
period 4346.133571534457
11.90
0.00012538
3.433e-07
d
yr
n .08283224481591289 2.3895e-09 deg/d
Q 5.926537164232403 1.1398e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1722  
   data-arc span      12403 days (33.96 yr)  
   first obs. used      1986-12-02  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:19:27  

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. 2020-October); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-17 19:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin