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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:14 
Transit: 13:06 
Sunset: 20:58
sunny   (Daytime)   What's Visible Now?
All Constellations »  Ophiuchus »  Deep Sky Objects » 

IC 4604 (Rho Ophiuchi Nebula) - Nebula in Ophiuchus

Below the horizon.  Rise: 17:28 | Tran: 21:14 | Set: 1:05
Alt: -55.94°   Az: 44.32°   Direction: North-East

IC 4604 is a Nebula in the Ophiuchus constellation. IC 4604 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. Given its B magnitude of 5.1, IC 4604 is barely visible to the naked eye, easily visible with the help of a small binocular.

The image below is a photograph of IC 4604 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 2.0000x2.0000 degrees (120.00x120.00 arcmins).

Image of IC 4604 (Rho Ophiuchi Nebula) - Nebula in Ophiuchus star
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DSS2 image of IC 4604 in the Red band. The green region on the image is a representation of the major (60 arcmin) and minor (25 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

16h 26m 59s
-23° 29’ 27”
13h 41m 01s
06h 08m 01s

J2000

16h 25m 31s
-23° 26’ 12”

Finder Chart

The simplified sky charts below show the position of IC 4604 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.

Finder chart IC 4604 (Rho Ophiuchi Nebula) - Nebula in Ophiuchus star
Simplified finder chart for IC 4604 (Rho Ophiuchi Nebula) - Nebula in Ophiuchus.

Finder chart IC 4604 (Rho Ophiuchi Nebula) - Nebula in Ophiuchus star
Simplified finder chart for IC 4604 (Rho Ophiuchi Nebula) - Nebula in Ophiuchus.

Photometric Information

The following table lists the magnitude of IC 4604 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).

5.1

For more information about photometry in astronomy, check the photometric system article on Wikipedia.

Apparent Size

The following table reports IC 4604 apparent angular size. The green area displayed on top of the DSS2 image of IC 4604 is a visual representation of it.
60 arcmin
25 arcmin

Rise and Set Times

Location: Greenwich, UK
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's IC 4604 (Rho Ophiuchi Nebula) - Nebula in Ophiuchus rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.5°
Max altitude: 15.0°
Azimuth: 246.5°