NGC 7255 - Spiral Galaxy in Aquarius
NGC 7255是一个螺旋星系Aquarius constellation。NGC 7255 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year.
- NGC 7255 isbelow the horizonfrom Greenwich, United Kingdom [change]. See also上升和设定的时间。
- 鉴于它B magnitudeof 15, NGC 7255 is visible with the help of a telescope havng an aperture of 20 inches (500mm) or more.
Photometric information of NGC 7255
The following table lists the magnitude of NGC 7255 in different bands of the electomagnetic spectrum (when available), from the B band (445nm wavelength, corresponding to the Blue color), to the V band ( 551nm wavelength, corresponding to Green/Yellow color), to the J, H, K bands (corresponding to 1220nm, 1630nm, 2190nm wavelengths respectively, which are colors not visible to the human eye).
For more information about photometry in astronomy, check thephotometric systemarticle on Wikipedia.
The表面亮reported below is an indication of the brightness per unit of angular area of NGC 7255.
Apparent size of NGC 7255
The following table reports NGC 7255apparent angular size。绿色区域显示在NGC 7255的DSS2图像is a visual representation of it.NGC 7255的数字化天空调查图像
下图是数字化的天空调查2中的NGC 7255的照片（DSS2-请参阅creditssection) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins).
NGC 7255-水瓶座形态分类中的螺旋星系
NGC 7255-水瓶座中的螺旋星系归类为Spiral (SAa)根据哈勃和德瓦科尔的说法galaxy morphological classification。The diagram below shows a visual representation of the position of NGC 7255 - Spiral Galaxy in Aquarius in the Hubble de Vaucouleurs sequence.
Celestial coordinates and finder chart of NGC 7255
Celestial coordinatesfor the J2000 equinox of NGC 7255 are provided in the following table:
The simplified sky charts below show the position of NGC 7255 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.
Rise ans set times of NGC 7255 from your location
地点：格林威治，英国[change]
纬度：51°28’47英寸n
Longitude:0°00’00英寸E
Timezone:Europe/London
Today'sNGC 7255 - Spiral Galaxy in Aquariusrise,transitand set times from Greenwich, United Kingdom [change]是以下（与当地时区欧洲/伦敦有关的所有时间）：