Johannesburg Centre, Astronomical Society of Southern Africa

Autumn Constellations

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February

 

March

 

April

 

 

Antlia

 

Centaurus

 

Canes Venatici

 
 

Argo Navis

 

Chamaeleon

 

Circinus

 
 

Leo Minor

 

Corvus

 

Coma Berenices

 
 

Pyxis

 

Crater

 

Virgo

 
 

Sextans

 

Crux

 

 
 

Vela

 

Hydra

 

 
 

 

Leo

 

 
 

 

Musca

 

 
      Ursa Major      
  

 

 

 

Constellations listed with a grey background are never visible from most of South Africa.

 


Antlia (Ant) the Air Pump

 

[Index]

Argo Navis (Arg) the Ship

  • This is an archaic constellation.
  • In modern usage it is divided into Carina, Puppis and Vela.
  • Some include Pyxis in this constellation.

[Index]

Canes Venatici (CVn) the Hunting Dogs

 

NGC5272

M3

RA 13h42.2'

 

Dec +28°23'

 

Mv=6.4

Globular Cluster

 

Extremely bright (visible in binoculars) and very large with more than 45000 stars brighter than Mv22,5. The brightest stars are Mv11. It contains over 180 known variable stars and has mysterious dark spots in the nuclear region. At a distance of 34000 ly, it subtends a dimeter of 20' in photographs. 

 


 

[Index]

 

Centaurus (Cen) the Centaur

 

 

NGC3918

Blue Planetary Nebula

RA 11h50.3'

 

Dec -57°11'

 

Mv=8.4

Planetary Nebula

 

The nebula appears round, well defined and vivid pale blue.

It lies in a fine starry field.

 


 

NGC5128

Centaurus A

RA 13h25.5'

 

Dec -43°01'

 

Mv=6.8

Galaxy

 

One of the most interesting and peculiar galaxies in the sky, looks like a "cosmic hamburger" in small telescopes. A strong source of radio radiation, it is the nearest radio galaxy. In binoculars it looks like a small nebulous cloud. Containing 3 times as many stars as the Milky Way, it lies somewhere between 10 and 22 million ly distant.

 


 

NGC5139

Omega Centauri

RA 13h26.8'

 

Dec -47°29'

 

Mv=3.7

Globular Cluster

 

Biggest of all globular clusters in our galaxy, massive (~ 5m solar masses),  also the most luminous Milky Way globular and the brightest globular cluster in the sky. Its only real rival is 47 Tuc. It is about 15 billion years old and lies at a distance of about 16500 ly.

 


 

[Index]

Chamaeleon (Cha) the Chamaeleon

 

[Index]

Circinus (Cir) the Compasses

 

[Index]

Coma Berenices (Com) Berenice's Hair

 

NGC4826

M64

Black Eye Galaxy

RA 12h56.7'

 

Dec +21°41'

 

Mv=8.5

Galaxy

 

Spiral galaxy with a small distinctly concave dark absorption area near the nucleus, resembling a human eye. It subtends approximately 7,5' x 3,5' at a distance of 20 to 25 million ly.

 


 

NGC5024

M53

RA 13h12.9'

 

Dec +18°10'

 

Mv=7.7

Globular Cluster

 

Bright, very compressed, irregularly round. William Herschel described M53 as one of the most beautiful sights in the heavens.

 


 

[Index]

Corvus (Crv) the Crow

 

[Index]

Crater (Crt) the Cup

 

[Index]

Crux (Crx) the Cross

 

NGC4755

Jewel Box Cluster

RA 12h53.6'

 

Dec -60°20'

 

Mv=4.2

Open Cluster

 

Lying at a distance of about 76000 ly, the cluster subtends about 10', within which lies about 50 bright (Mv6-10) stars. Most of the stars are relatively young (several million years) blue supergiants, but contrast effects give a variety of perceived colours within this group. Described by John Herschel as a "casket of variously coloured precious stones", this is is a beautiful target for any scope.

 


 

[Index]

Hydra (Hya) the Water Snake

 

NGC2548

M48

RA 08h13.8'

 

Dec -05°48'

 

Mv=5.8

Open Cluster

 

A pleasing cluster full of dark lanes and openings, it lies at a distance of about 2000 ly and subtends a diameter of 42'.

 


 

NGC5236

M83

Southern Pinwheel Galaxy

RA 13h37.0'

 

Dec -29°52'

 

Mv=7.5

Galaxy

 

A gorgeous face-on spiral galaxy with one beautiful dark lane, this is one of the brightest and most beautiful in the Southern hemisphere. Its actual diameter is around 35000 ly; at the distance of some 12 million ly, it appears to be 11' x 10' across.

 


 

 

 

[Index]

Leo (Leo) the Lion

 

[Index]

Leo Minor (LMi) the Little Lion

 

[Index]

Musca (Mus) the Fly

 

[Index]

Pyxis (Pyx) the Compass

 

[Index]

Sextans (Sex) the Sextant

 

[Index]

Vela (Vel) the Sails

 

[Index]

Virgo (Vir) the Virgin

 

NGC4486

M87

Virgo A

RA 12h30.8'

 

Dec +12°24'

 

Mv=8.6

Galaxy

 

An elliptical galaxy, resembling an unresolved globular cluster, with a total mass of nearly 800b suns. This is one of the brightest members of the Virgo cluster. It is a strong X-ray and radio source, with a jet of matter streaming from the nucleus.

 


 

NGC4594

M104

Sombrero Galaxy

RA 12h40.0'

 

Dec -11°37'

 

Mv=8

Galaxy

 

A picturesque, nearly edge-on spiral galaxy with prominent central bulge; a band of dark interstellar matter can be seen along the equatorial plane.

 


 

 

 

[Index]

 

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