What is the Large Magellanic Cloud?

Magellanic clouds Two companion galaxies in the Milky Way. Raise the ground level in areas south of latitude 20 ° N. They are two cloud-like objects clearly visible to the naked eye near the Nantian Milky Way. The larger one is in the swordfish and the mountain case, about 6 ° in size, which is equivalent to a 12-month spherical diameter; the smaller one is in the cuckoo, with an opening angle of about 2 °, which is equivalent to a 4-month spherical diameter; two clouds are in The celestial spheres are about 20 ° apart.

Magellan Nebula

When the Arabs in the 10th century and the Portuguese in the 15th century sailed south of the equator, they noticed the two cloud-like objects in the southern sky, called "
Large Magellanic Cloud
Celestial Name: Lg Magellanic Cl
Common Name: Large Magellanic Cloud
Size: 550.0'x170.0 '
Magellan galaxy
Object Name: NGC 292
Common Name: Small Magellanic Cloud
Celestial Type: Galaxy
Magnitude: 2.2
Size: 319.1'x205.1 '
Radial velocity
Radial measurement of heliocentric radial velocity: 175.0 km / sec
Radio measurement error: 20.5 km / sec
Optical measurement of heliocentric radial velocity: 177.3 km / sec
Optical measurement error: 40.9 km / sec
Mean radial speed: 175.5 km / sec
Average measurement error: 18.3 km / sec
Consider the radial velocity of the local galaxy group: -6.5 km / sec
Considering the radial velocity of the GSR: 34.6 km / sec
Corrected radial velocity to Virgo's Local Galaxy Group: -87.8 km / sec
Considering the radial velocity of 3K background radiation: 113.7 km / sec
Astrophysics distance modulus: 19.511
Absolute B magnitude: -17.491

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