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JPL Small-Body Database Browser
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604 Tekmessa (A906 DH)
Classification: Main-belt Asteroid          SPK-ID: 2000604
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1978529250024115 4.1873e-08  
a 3.148177634564236 1.26e-08 au
q 2.525301481138529 1.3038e-07 au
i 4.419131987756203 4.8571e-06 deg
node 12.16483010291778 4.7658e-05 deg
peri 28.77690655104398 4.8642e-05 deg
M 168.1659215988079 1.1264e-05 deg
tp 2457647.434471761257
(2016-Sep-15.93447176)
6.0977e-05 TDB
period 2040.268247597079
5.59
1.2249e-05
3.354e-08
d
yr
n .1764473864767484 1.0593e-09 deg/d
Q 3.771053787989943 1.5093e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2736  
   data-arc span      39645 days (108.54 yr)  
   first obs. used      1911-01-31  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46745  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:10:16  

Additional Information
 Earth MOID = 1.53399 au 
 Jupiter MOID = 1.66982 au 
 T_jup = 3.173 
[ 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 9.5   n/a MPO347517  
diameter diameter 64.536 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.5596 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Baker, R.E.; Warner, B.D. (2011) Minor Planet Bull. 38, 195-197.]
[Klinglesmith III, D.A.; Hanowell, J.; Risely, E.; Turk, J.; et al. (2013) Minor Planet Bull. 40, 190-193.]
[Klinglesmith III, D.A. (2017) Minor Planet Bull. 44, 127-129.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.090   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B Xc   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)

604 Tekmessa (A906 DH)          Discovered 1906-Feb-16 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A906 DH = A894 BA = A911 BC = A915 WG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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