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604 Tekmessa (1906 TK)
Classification: Main-belt Asteroid          SPK-ID: 2000604
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1992530046457484 4.7438e-08  
a 3.147713134575463 1.7643e-08 AU
q 2.520521834748415 1.4922e-07 AU
i 4.421209774768905 6.1232e-06 deg
node 12.18043186847091 5.6195e-05 deg
peri 28.87687893456377 5.7815e-05 deg
M 245.6194450743911 1.3618e-05 deg
tp 2457648.598243951489
(2016-Sep-17.09824395)
8.0267e-05 JED
period 2039.81671512505
5.58
1.715e-05
4.695e-08
d
yr
n .1764864447529201 1.4838e-09 deg/d
Q 3.774904434402511 2.1159e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1403  
   data-arc span      38128 days (104.39 yr)  
   first obs. used      1911-01-31  
   last obs. used      2015-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58582  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:35:40  

Additional Information
 Earth MOID = 1.5295 AU 
 T_jup = 3.173 
[ 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 9.4 mag n/a MPO265959  
diameter diameter 65.16 km 4.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
rotation period rot_per 5.5596 h n/a LCDB (Rev. 2015-July); 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 Bul. 38, 195-197.]
[Klinglesmith III, D.A.; Hanowell, J.; Risely, E.; Turk, J.; et al. (2013) Minor Planet Bul. 40, 190-193.]
geometric albedo albedo 0.0870   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 10
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 (1906 TK)          Discovered 1906-Feb-16 by Metcalf, J. H. at Taunton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1906 TK = A894 BA = A911 BC = A915 WG 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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