NGC 2419

NGC 2419
NGC 2419 Hubble WikiSky.jpg
NGC 2419 by HST
Credit: NASA / STScI / WikiSky
Observation data (J2000 epoch)
Constellation Lynx
Right ascension 07h 38m 08.51s[1]
Declination +38° 52′ 54.9″[1]
Distance 275 kly (from the Sun)
300 kly (from the GC) (84.2 kpc (Sun)
91.5 kpc (GC)[2])
Apparent magnitude (V) +9.06[1]
Apparent dimensions (V) 6′
Physical characteristics
Radius 260 ly[3]
VHB 20.45[2]
Other designations GCl 112,[1] Caldwell 25
See also: Globular cluster, List of globular clusters

NGC 2419 (also known as Caldwell 25) is a globular cluster in the constellation Lynx. It was discovered by William Herschel on December 31, 1788.[4] NGC 2419 is at a distance of about 300,000 light years from the solar system and at the same distance from the galactic center.

NGC 2419 (Credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona)

NGC 2419 bears the nickname "the Intergalactic Wanderer," which was bestowed when it was erroneously thought not to be in orbit around the Milky Way. Its orbit brings it further away from the galactic center than the Magellanic Clouds, but it can (with qualifications) be considered as an element of the Milky Way. At this great distance it takes three billion years to make one trip around the galaxy.[5]

The cluster is dim in comparison to more famous globular clusters such as M13. Nonetheless, NGC 2419 is a 9th magnitude object and is readily viewed, in good sky conditions, with good quality telescopes as small as 102mm (four inches) in aperture.

Astronomer Leos Ondra has noted that NGC 2419 would be the "best and brightest" for any observers in the Andromeda Galaxy, looking for globular clusters in our galaxy since it lies outside the obscuring density of the main disk.[5] This is analogous to the way the cluster G1 can be seen orbiting outside of the Andromeda Galaxy from Earth.

References

  1. ^ a b c d "SIMBAD Astronomical Database". Results for NGC 2419. http://simbad.u-strasbg.fr/Simbad. Retrieved 2006-11-17. 
  2. ^ a b Harris, W.E. (1996). "A Catalog of Parameters for Globular Clusters in the Milky Way". AJ 112: 1487. Bibcode 1996AJ....112.1487H. doi:10.1086/118116. http://physwww.physics.mcmaster.ca/%7Eharris/mwgc.dat. 
  3. ^ distance × sin( diameter_angle / 2 ) = 260 ly. radius
  4. ^ http://www.seds.org/messier/xtra/ngc/n2419.html NGC 4189 at SEDS
  5. ^ a b Ferris, Timothy. Seeing in the Dark. 2002. p. 244

External links

Coordinates: Sky map 07h 38m 08.51s, +38° 52′ 54.9″


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • NGC 2419 — Звёздное скопление …   Википедия

  • NGC 2419 — Datos de observación (Época J2000.0) Tipo Cúmulo globular …   Wikipedia Español

  • NGC 2419 — Datenbanklinks zu NGC 2419 Kugelsternhaufen Daten von NGC 2419 …   Deutsch Wikipedia

  • NGC 2384 — ist ein offener Sternhaufen im Sternbild Großer Hund und hat eine Winkelausdehnung von 5,0 und eine scheinbare Helligkeit von +7,4 mag. Er wurde am 15. Februar 1836 von John Herschel entdeckt, und wird auch als OCL 618 und ESO 559 SC9 bezeichnet …   Deutsch Wikipedia

  • NGC 2395 — ist die Bezeichnung für einen offenen Sternhaufen im Sternbild Zwillinge. NGC 2395 hat einen Winkeldurchmesser von 12 Bogenminuten und eine Helligkeit von +8,00 mag. Koordinaten (Äquinoktium 2000) Rektaszension: 7h27m12,00s Deklination: +13°37 00 …   Deutsch Wikipedia

  • NGC 2439 — ist die Bezeichnung eines offenen Sternaufens im Sternbild Puppis. NGC 2439 hat einen Durchmesser von 10 und eine scheinbare Helligkeit von +6,90 mag. Koordinaten (Äquinoktium 2000) Rektaszension: 7h40m48.00s Deklination: 31°42 00.0 Im New… …   Deutsch Wikipedia

  • NGC 2415 — Галактика История исследования Открыватель Уильям Гершель Дата открытия 10 марта 1790 Обозначения NGC 2415, UGC 3930, MCG 6 17 21, ZWG 177.38 …   Википедия

  • NGC 2416 — Галактика История исследования Дата открытия 26 января 1865 Обозначения NGC 2416, UGC 3925, MCG 2 20 2, ZWG 58.8, IRAS07329+1143, PGC 21358 …   Википедия

  • NGC 2417 — Галактика История исследования Открыватель Джон Гершель Дата открытия 8 марта 1836 Обозначения NGC 2417, ESO 123 15, AM 0729 620, IRAS07295 6208 …   Википедия

  • NGC 2418 — Галактика История исследования Дата открытия 23 января 1874 Обозначения NGC 2418, UGC 3931, MCG 3 20 8, ZWG 87.17, ARP 165, PGC 21382 …   Википедия


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.