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JPL Small-Body Database Browser
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590 Tomyris (A906 ED)
Classification: Main-belt Asteroid          SPK-ID: 2000590
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08022375807768556 3.478e-08  
a 2.998857790331871 1.2588e-08 au
q 2.758278148450904 1.0575e-07 au
i 11.17352446660433 4.0818e-06 deg
node 106.1434661894923 2.1861e-05 deg
peri 339.074755865441 3.6104e-05 deg
M 72.91934919342863 2.7854e-05 deg
tp 2458616.286591375191
(2019-May-12.78659138)
0.00014678 TDB
period 1896.846703033879
5.19
1.1943e-05
3.27e-08
d
yr
n .1897886631661927 1.195e-09 deg/d
Q 3.239437432212838 1.3598e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2578  
   data-arc span      41694 days (114.15 yr)  
   first obs. used      1906-03-05  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:08:58  

Additional Information
 Earth MOID = 1.77774 au 
 Jupiter MOID = 1.93644 au 
 T_jup = 3.220 
[ 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 10.0   n/a MPO502158 IRAS observations used: 8
diameter diameter 30.577 km 0.200 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.562 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Addleman, D.; Covele, B.; Duncan, A.; Johnson, J.; et al. (2005) Minor Planet Bull. 32, 76-78.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2016) Astron. Astrophys., submitted.]
[Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2018) Icarus 299, 84-96.]
geometric albedo albedo 0.187   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.817   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=11.80, mean=13.49, max.=17.67) deg.
U-B UB 0.410   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=11.80, mean=13.49, max.=17.67) deg.

590 Tomyris (A906 ED)          Discovered 1906-Mar-04 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A906 ED = 1954 ME = 1955 SJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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