Home     Getting Started     To Survive in the Universe    
Inhabited Sky
    News@Sky     Astro Photo     The Collection     Forum     Blog New!     FAQ     Press     Login  

TYC 886-731-1


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

Observations of several BY Draconis variables
Eight late-type dwarf stars were surveyed with the KPNO no. 4 0.4-mtelescope during the period 1978 May 10 to 17 for photometricvariability of the BY Draconis type. Five of the stars were not variableat the 0.02-magnitude level. The appearance of variations of a verysubstantial amplitude in BD + 36 deg 2322 is new. The object hasdeveloped at one point in a full range of at least 0.1 mag. The data areinadequate to establish a period, but a simple sine-wave of period 3.2days seems to phase the limited observations well. This appearance of BYDra-like variations in a previously thought nonvariable object suggeststhat most if not all of the dMe stars are subject to the syndrome. Theprimary purpose of the observations was to establish rotational phases,but this attempt was frustrated by bad weather, although a few recordswere obtained which yield a negative result.

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:Vierge
Right ascension:12h58m31.96s
Declination:+12°23'42.3"
Apparent magnitude:9.585
Proper motion RA:0.3
Proper motion Dec:4.8
B-T magnitude:11.178
V-T magnitude:9.717

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 886-731-1
USNO-A2.0USNO-A2 0975-07080453
HIPHIP 63316

→ Request more catalogs and designations from VizieR