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NEWS:- T-CEHEI HAS REACHED MAXIMUM?
T-Cephei in the constellation of Cepheus is located approx 2° from the bright 3.3 mag star Beta Cephei (Alfirk). From my lattitude (53° North), the star is circumpolar and can be observed all year. In 10x50 binoculars, both stars can be seen in the same fov. Umistakably red in colour, T-Cephei is surrounded by a sparce population of dim field stars. I have been monitoring the star (rather late in its period) and reporting my magnitude estimates to the American Association of Variable Star Observers (AAVSO) via their online portal as have other obervers worldwide. Though few, my estimates that I have reported to the AAVSOare shown below. Note I have used the decimal Universal Date rather than the Julian Date that is used to report variable stars, for ease of use for those of you unfamilar with this system.
Updated 25/11/2006
T Cephei details:
J2000.0 RA: 21h 09m 31.80s Dec: +68° 29' 27.0"
Other Names:
AAVSO 2108+68 BD+67 1291 HD 202012
HIP 104451 HR 8113 IRC +70168
RAFGL 2721 SAO 19229
Var. type M
Spec. type M5.5e-M8.8e
Mag. range 5.2 - 11.3 V
Period 388.14d
Rise dur. 54%
Distance: ~210.8pc (Redshift v5)
2006 Predicted Average Minimum 4/5/2006 +10.3V
2006 Predicted Average Maximum 20/11/2006 +6.0V
All images are Copyright © 1999-2006 John Cox
