Home     Baþlangýç     Evrende yaþayabilmek için    
Inhabited Sky
    News@Sky     Gökyüzü görüntüsü     Koleksiyon     Forum     Blog New!     SSS     Basýn     Giriþ  

TYC 886-731-1


Ýçindekiler

Görüntüler

Resim Yükleyin

DSS Images   Other Images


Ýlgili Makaleler

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.

Yeni bir Makale Öner


Ýlgili Baðlantýlar

  • - Baðlantý Bulunamadý -
Yeni Bir Baðlantý Öner


sonraki gruplarýn üyesi:


Gözlemler ve gökölçümü verileri

Takýmyýldýz:Basakci
Sað Açýklýk:12h58m31.96s
Yükselim:+12°23'42.3"
Görünürdeki Parlaklýk:9.585
özdevim Sað Açýklýk:0.3
özdevim Yükselim:4.8
B-T magnitude:11.178
V-T magnitude:9.717

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
TYCHO-2 2000TYC 886-731-1
USNO-A2.0USNO-A2 0975-07080453
HIPHIP 63316

→ VizieR 'den daha fazla katalog ve tanýmlama isteyin