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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:15 
Transit: 12:47 
Sunset: 18:17
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All Constellations »  Cancer »  Deep Sky Objects » 

NGC 2643 - Lenticular Galaxy in Cancer

Below the horizon.  Rise: 0:41 | Tran: 8:29 | Set: 16:13
Alt: -10.45°   Az: 38.76°   Direction: North-East

NGC 2643 is a Lenticular Galaxy in the Cancer constellation. NGC 2643 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 15.6, NGC 2643 is visible only through long exposure photography.

The image below is a photograph of NGC 2643 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 0.5000x0.5000 degrees (30.00x30.00 arcmins).

Image of NGC 2643 - Lenticular Galaxy in Cancer star
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DSS2 image of NGC 2643 in the Red band. The green region on the image is a representation of the major (0.68 arcmin) and minor (0.37 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

08h 43m 17s
+19° 36’ 45”
14h 43m 15s
23h 26m 32s

J2000

08h 41m 52s
+19° 42’ 09”

Finder Chart

The simplified sky charts below show the position of NGC 2643 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 NGC 2643 - Lenticular Galaxy in Cancer star
Simplified finder chart for NGC 2643 - Lenticular Galaxy in Cancer.

Finder chart NGC 2643 - Lenticular Galaxy in Cancer star
Simplified finder chart for NGC 2643 - Lenticular Galaxy in Cancer.

Photometric Information

The following table lists the magnitude of NGC 2643 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).

15.6
12.64
12
11.81

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

The surface brightess reported below is an indication of the brightness per unit of angular area of NGC 2643.

23.27 mag/arcsec2

Apparent Size

The following table reports NGC 2643 apparent angular size. The green area displayed on top of the DSS2 image of NGC 2643 is a visual representation of it.
0.68 arcmin
0.37 arcmin
19°

Morphological Classification

NGC 2643 - Lenticular Galaxy in Cancer is classified as Lenticular (S0-Aa) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 2643 - Lenticular Galaxy in Cancer in the Hubble de Vaucouleurs sequence.

NGC 2643 - Lenticular Galaxy in Cancer
Visualization of the morphological classification of NGC 2643 - Lenticular Galaxy in Cancer, Lenticular (S0-Aa).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Rise and Set Times

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

Today's NGC 2643 - Lenticular Galaxy in Cancer rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 70.4°
Max altitude: 58.1°
Azimuth: 289.6°