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RA: 16 34 24.54 Dec: +57 08 58.5 (J2000)
A CCD-image of CM-Dra and comparison stars used in differential photometry.
CM Dra Orbital Elements
(References: L77 = Lacy, 1977; M96 = Metcalfe
et al.,1996; CB95 = Chabrier & Baraffe 1995):
Period(days): 1.26838965 (L77) +-.00000010 1.2683909 (M96) +-.0000024 1.268389934 (preliminary redetermination by the TEP +-.000000005 group based on eclipse timings in 1994-96 and using the Epochs given by L77) Epoch (Helioc. JD) primary min: 2442893.93249 (L77) +-.00010 2449830.757029 (TEP, prelim. value) second. min: 2442894.56567 (L77) +-.00010 Orbital inclin. (L77) 89.82+- 0.05 deg Excentricity (M96) 0.0050+-0+.0015 omega(M96) 142+-17 deg Barycenter radial velocity (M96) -118.71+-0.08 km s-1 Distance (CB95) 14.49 pc
CM Dra A CM Dra B large small component Semi Major Axis (M96) a sin i (10^6 km) 1.2584+-0.0025 1.40+-0.05 Mass M sin i (Msol) M96 0.2306+-0.0010 0.2135+-0.0010 L77 0.238+-0.012 0.208+-0.009 Relat. Luminosity (L77) 53.4+-0.2% 46.6+-0.2% Radii/separation (L77) 0.0669+-0.0005 0.0624+-0.0005 Radii(R sol, CB95) 0.252+-0.008 0.235+-0.007 Teff(CB95) 3150+-100 3150+-100 Mbol(CB95, at 14.49pc) 10.39 10.54 Mv(CB95, at 14.49pc) 12.77 12.92 Spectral Type M4.5 M4.5
Last update: 25/Mar/2002. For comments, send email to Hans-Jörg Deeg at hXdeeg@ll.iaXc.es (NOTE: remove the X from adress)