NGC 2008
| Galaxie NGC 2008 | |
|---|---|
 (c) ESA/Hubble, CC BY 4.0 | |
| Die Galaxie NGC 2008 aufgenommen durch das Hubble-Weltraumteleskop | |
| AladinLite | |
| Sternbild | Maler |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 05h 35m 03,8s[1] |
| Deklination | −50° 58′ 00″[1] |
| Erscheinungsbild | |
| Morphologischer Typ | SA(s)c[1] |
| Helligkeit (visuell) | 13,2 mag[2] |
| Helligkeit (B-Band) | 13,9 mag[2] |
| Winkelausdehnung | 1,4′ × 0,7′[2] |
| Positionswinkel | 105°[2] |
| Flächenhelligkeit | 13,0 mag/arcmin²[2] |
| Physikalische Daten | |
| Rotverschiebung | 0,034387 ± 0,000033[1] |
| Radialgeschwindigkeit | (10.309 ± 10) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) | (452 ± 32) · 106 Lj (138,5 ± 9,7) Mpc [1] |
| Geschichte | |
| Entdeckung | John Herschel |
| Entdeckungsdatum | 27. Dezember 1834 |
| Katalogbezeichnungen | |
| NGC 2008 • PGC 17480 • ESO 204-020 • IRAS 05338-5059 • 2MASX J05350381-5058002 • SGC 053352-5059.9 • GC 1211 • h 2894 • AGC 24399 | |
NGC 2008 ist eine Spiralgalaxie vom Hubble-Typ Sc im Sternbild Maler am Südsternhimmel. Sie ist schätzungsweise 452 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 190.000 Lichtjahren. Gemeinsam mit NGC 2007 bildet sie ein optisches Galaxienpaar.
Das Objekt wurde am 27. Dezember 1834 von dem britischen Astronomen John Herschel entdeckt.[3]
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(c) ESA/Hubble, CC BY 4.0
Open Arms
The spiral galaxy NGC 2008 sits centre stage, its ghostly spiral arms spreading out towards us, in this image captured by the NASA/ESA Hubble Space Telescope.
This galaxy is located about 425 million light-years from Earth in the constellation of Pictor (The Painter’s Easel). Discovered in 1834 by astronomer John Herschel, NGC 2008 is categorised as a type Sc galaxy in the Hubble sequence, a system used to describe and classify the various morphologies of galaxies. The “S” indicates that NGC 2008 is a spiral, while the “c” means it has a relatively small central bulge and more open spiral arms. Spiral galaxies with larger central bulges tend to have more tightly wrapped arms, and are classified as Sa galaxies, while those in between are classified as type Sb.
Spiral galaxies are ubiquitous across the cosmos, comprising over 70% of all observed galaxies — including our own, the Milky Way. However, their ubiquity does not detract from their beauty. These grand, spiralling collections of billions of stars are among the most wondrous sights that have been captured by telescopes such as Hubble, and are firmly embedded in astronomical iconography.
Credit:
ESA/Hubble & NASA, A. Bellini
Coordinates Position (RA): 5 35 3.91 Position (Dec): -50° 57' 58.97" Field of view: 2.61 x 1.57 arcminutes Orientation: North is 177.0° left of vertical
Colours & filters Band Wavelength Telescope Optical V 606 nm Hubble Space Telescope ACS Optical I 814 nm Hubble Space Telescope ACS Optical V 606 nm Hubble Space Telescope ACS Optical I 814 nm Hubble Space Telescope ACS.