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In Evidence
Other deep sky objects in Scorpius
- NGC 6231 - Open Cluster
- Messier 7 (Ptolemy's Cluster) - Open Cluster
- IC 4592 - Reflection Nebula
- Messier 6 (Butterfly Cluster) - Open Cluster
- IC 4605 - Nebula
- NGC 6227 - Star
- Messier 4 (The Cat's Eye) - Globular Cluster
- NGC 6281 - Open Cluster
- NGC 6374 - Open Cluster
- NGC 6124 - Open Cluster
- NGC 6322 - Open Cluster
- NGC 6242 - Open Cluster
- NGC 6169 - Open Cluster
- NGC 6425 - Open Cluster
- NGC 6178 - Open Cluster
- Messier 80 - Globular Cluster
- NGC 6388 - Globular Cluster
- NGC 6441 - Globular Cluster
- NGC 6259 - Open Cluster
- NGC 6249 - Open Cluster
- NGC 6451 - Open Cluster
- NGC 6396 - Open Cluster
- NGC 6192 - Open Cluster
- NGC 6400 - Open Cluster
- NGC 6268 - Open Cluster
- NGC 6302 (Bug Nebula) - Planetary Nebula
- NGC 6144 - Globular Cluster
- NGC 6139 - Globular Cluster
- NGC 6216 - Open Cluster
- NGC 6453 - Globular Cluster
- NGC 6404 - Open Cluster
- NGC 6153 - Planetary Nebula
- NGC 6072 - Planetary Nebula
- NGC 6318 - Open Cluster
- NGC 6337 - Planetary Nebula
- IC 4599 - Planetary Nebula
- IC 4637 - Planetary Nebula
- IC 4663 - Planetary Nebula
- NGC 6000 - Galaxy
- IC 4597 - Galaxy
- IC 4598 - Galaxy
- IC 4596 - Galaxy
- NGC 6437 - Association of Stars
- NGC 6415 - Association of Stars
- NGC 6416 - Open Cluster
- NGC 6421 - Association of Stars
- NGC 6444 - Open Cluster
- NGC 6455 - Association of Stars
- IC 1203 - Association of Stars
- NGC 6380 - Globular Cluster
- NGC 6357 (War and Peace Nebula) - Star Cluster + Nebula
- NGC 6354 - Other Classification
- NGC 6335 - Association of Stars
- NGC 6334 - Supernova Remnant
- NGC 6256 - Globular Cluster
- IC 1207 - Association of Stars
- NGC 6082 - Other Classification
- NGC 5998 - Open Cluster
- IC 4628 - Nebula
- IC 4606 - Other Classification
- IC 4601 - Nebula
- IC 4600 - Other Classification
- IC 4591 - HII Ionized region
- NGC 6480 - Association of Stars
Messier 7 (Ptolemy's Cluster) - Open Cluster in Scorpius
Messier 7 is a Open Cluster in the Scorpius constellation. Messier 7 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere.
Messier 7 is below the horizon from Greenwich, United Kingdom .
Altitude: -26.1°
Azimuth: 113.9°
Direction: East-South-East
See also Messier 7 rise and set times.
Given its visual magnitude of 3.3, Messier 7 is visible to the naked eye under a clear and dark sky, or with the help of a small binocular.
Photometric information of Messier 7
The following table lists the magnitude of Messier 7 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 the photometric system article on Wikipedia.
Apparent size of Messier 7
The following table reports Messier 7 apparent angular size. The green area displayed on top of the DSS2 image of Messier 7 is a visual representation of it.Digitized Sky Survey image of Messier 7
The image below is a photograph of Messier 7 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 0.74x0.74 degrees (44.4x44.4 arcmins).
Celestial coordinates and finder chart of Messier 7
Celestial coordinates for the J2000 equinox of Messier 7 are provided in the following table:
The simplified sky charts below show the position of Messier 7 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 Messier 7 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Today's Messier 7 (Ptolemy's Cluster) - Open Cluster in Scorpius rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):