Universe Guide

Porpoise / Penguin Galaxy Facts and How to Find

Porpoise / Penguin Galaxy Facts and How to Find Galaxy in Hydra

Porpoise / Penguin Galaxy is a galaxy object of interest in space. It lies at a distance of 326 Million LY light years away in the constellation of Hydra.

It is also referred to as NGC(2936) in the New General Catalogue. This is a list of deep space objects that was compiled by John Louis Emil Dreyer in 1888 in an update to John Herschel earlier catalogue.

The Galaxy's location is 09h 37m 41 (R.A.) and +2d 46` 00 (Dec.). Its Visual (Apparent) Brightness is 12.85 Magnitude with an apparent dimension of 1.3 x 30 . The object can not be seen by the naked eye, you need a telescope to see it.

Porpoise / Penguin Galaxy has a radius of 25 light years or to put it another way, it has a diameter of 51 light years. It would take a space ship 51 years travelling at the speed of light to get from one side to the other.

The galaxy is referred to as both the Penguin and the Porpose galaxy. You can refer to as it either but it has the same NGC ID. For here, we are referring to it as the Penguin Galaxy. The Penguin galaxy so called because it looks like a penguin looking after an egg.

It is one of two galaxies that make up the ARP 142. The small elliptical galaxy being looked after by the Penguin is NGC 2937 galaxy, sometimes referred to as an egg. The shape is caused by the interaction with the egg galaxy as they collide. The Penguin was once a spiral galaxy but has since been affected by the more spherical shaped object.

The stars in the Penguin Galaxy are mainly new and young stars evidenced by the presence of blue stars where as in the egg, the stars are mainly old, red stars and not much new stars are being formed. After the collision, a new series of star forming will begin.

The Penguin might be being shaped by the egg, the galaxy at the top of the picture, UGC 5130 is in fact millions of light years closer to us here on Earth and therefore not close enough to the collision to be affected in the same way as the others. N.A.S.A.

How to find and see the Porpoise / Penguin Galaxy

The site assumes that you are viewing from London in the Northern Hemisphere and from Sydney in the Southern Hemisphere and are looking at the sky about 9 p.m. If you are looking at another time or location, you will need to adjust for your location.

Northern Hemisphere

Assuming It can be seen just above the horizon in January at about 9pm. It should be visible just above the horizon until the beginning of July at about 9pm.

Southern Hemisphere

The Penguin Galaxy is visible from mid-late January in an easterly direction low on the horizon. It is visible until mid-late June when it disappears below the horizon. It should be noted that the picture below is from the southern hemisphere unlike the other pictures on this site which are from the northern hemisphere.

Fact File

NamePorpoise / Penguin Galaxy
NGC Id2936
Right Ascension09h 37m 41
Declination+2d 46` 00
Distance (Lt.Yr)326 Million LY
Radius (Lt.Yr)25.27
Apparent Dimension1.3 x 30
Visual / Apparent Magnitude12.85
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Morphological TypeE+S D ~
Radial Velocity6913

Location of Porpoise / Penguin Galaxy Facts and How to Find in Hydra

Porpoise / Penguin Galaxy Facts and How to Find Galaxy in Hydra

The image above showing the location of the object was generated using the free application Stellarium.

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