NGC 2420

Offener Sternhaufen; {{#if:NGC 2420\|NGC 2420\|NGC 2420}}
	{{#ifexist:Media:NGC2420 - SDSS DR14 (panorama).jpg\|Datei:NGC2420 - SDSS DR14 (panorama).jpg\|NGC2420 - SDSS DR14 (panorama).jpg}}
	SDSS, Bildwinkel 13,2' × 13,2'
	Vorlage:Sternkarte
	Vorlage:AladinLite }}
Position; Äquinoktium: J2000.0
Rektaszension	Vorlage:RektaszensionEasy <ref name="NED">NASA/IPAC Extragalactic Database</ref>
Deklination	Vorlage:DeklinationEasy <ref name="NED">NASA/IPAC Extragalactic Database</ref>
Erscheinungsbild
Klassifikation	I2r <ref name="SEDS">SEDS: NGC 2420</ref>
Helligkeit (visuell)	8,3 mag <ref name="SEDS"/>
Helligkeit (B-Band)	9,0 mag
Winkelausdehnung	6.0 <ref name="SEDS"/>
Anzahl Sterne	> 300
Hellster Stern	11 mag
Veränderliche Sterne
Rötung (Farbexzess E(B-V))	0,054 ± 0,004
Physikalische Daten
Zugehörigkeit	Milchstraße, ca. 3000 Lichtjahre oberhalb der Galaktischen Scheibe
Rotverschiebung
Radialgeschwindigkeit	km/s
Entfernung <ref>Webda</ref>	{{#if:10000\|10000 Lj{{#if:3085\|; (3085 pc)}}\|3085 pc}}
Absolute Helligkeit	mag
Masse	M☉
Durchmesser	30 Lj
Alter	2,0 ± 0,2 Milliarden Jahre
Metallizität [Fe/H]	ca. −0,3
{{#if:2420\|Geschichte\|Geschichte}}
Entdeckt von	William Herschel
Entdeckungszeit	19. November 1783Vorlage:Infobox Astronomie/Entdeckungskategorie
Katalogbezeichnungen
	{{#if:\| M {{{MES}}} •}}{{#if:2420\| NGC 2420 •}}{{#if:\| IC {{{IC}}} •}}{{#if:0735+216\| C 0735+216 •}}{{#if:\| 2MASS {{{2MASS}}} •}}{{#if:488\| OCl 488 •}}{{#if:69\| Mel 69 •}}{{#if:154\| Cr 154 •}}{{#if:\| Dun {{{Dun}}} •}}{{#if:364\| Lund 364 •}}{{#if:\| ESO {{{ESO}}} •}}{{#if:\| IRAS {{{IRAS}}} •}}{{#if:1549\| GC 1549 •}}{{#if:VI 1\| H VI 1 •}}{{#if:458\| h 458 •}}{{#if:Raab 56\| Raab 56}}

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{{#if:{{#invoke:Expr|TemplateBooland}}|

{{#if:||{{#if:2420|}}{{#if:|}}{{#if:|}}}}

NGC 2420 ist die Bezeichnung für einen offenen Sternhaufen im Sternbild Zwillinge. Er ist rund 10000 Lichtjahre von der Sonne entfernt und hat etwa 700 Mitgliedssterne. Da sich der Haufen während seines gesamten Umlaufs um das galaktische Zentrum durch die weniger dichten Außenbereiche der Milchstraße bewegt, konnte er das hohe Alter von zwei bis vier Milliarden Jahren erreichen.<ref>Sterne und Weltraum, 02.2017, S. 72</ref>

NGC 2420 hat einen Winkeldurchmesser von 6 Bogenminuten und eine visuelle scheinbare Helligkeit von 8,3 mag.

Der Sternhaufen wurde am 19. November 1783 von Friedrich Wilhelm Herschel entdeckt.<ref>Seligman</ref>

Weblinks

SIMBAD Astronomical Database

Einzelnachweise

{{safesubst:#ifeq:0|10| {{#switch: NGC 2420 |Navigationsleiste|NaviBlock|0=|#default= Vorlage:Templatetransclusioncheck Vorlage:Dokumentation/ruler }}}}Vorlage:Klappleiste/Anfang {{#if:

|

Gesamtliste
{{#ifeq: 2420||Diese Vorlage benötigt die Nummer im NGC-Katalog als Parameter|}}

{{#ifexpr: (2420-24)>0 | [[NGC {{#expr:2420-24}}]] | | [[NGC {{#expr:2420+7816}}]] | }} {{#ifexpr: (2420-23)>0 | [[NGC {{#expr:2420-23}}]] | | [[NGC {{#expr:2420+7817}}]] | }} {{#ifexpr: (2420-22)>0 | [[NGC {{#expr:2420-22}}]] | | [[NGC {{#expr:2420+7818}}]] | }} {{#ifexpr: (2420-21)>0 | [[NGC {{#expr:2420-21}}]] | | [[NGC {{#expr:2420+7819}}]] | }} {{#ifexpr: (2420-20)>0 | [[NGC {{#expr:2420-20}}]] | | [[NGC {{#expr:2420+7820}}]] | }} {{#ifexpr: (2420-19)>0 | [[NGC {{#expr:2420-19}}]] | | [[NGC {{#expr:2420+7821}}]] | }} {{#ifexpr: (2420-18)>0 | [[NGC {{#expr:2420-18}}]] | | [[NGC {{#expr:2420+7822}}]] | }} {{#ifexpr: (2420-17)>0 | [[NGC {{#expr:2420-17}}]] | | [[NGC {{#expr:2420+7823}}]] | }} {{#ifexpr: (2420-16)>0 | [[NGC {{#expr:2420-16}}]] | | [[NGC {{#expr:2420+7824}}]] | }} {{#ifexpr: (2420-15)>0 | [[NGC {{#expr:2420-15}}]] | | [[NGC {{#expr:2420+7825}}]] | }} {{#ifexpr: (2420-14)>0 | [[NGC {{#expr:2420-14}}]] | | [[NGC {{#expr:2420+7826}}]] | }} {{#ifexpr: (2420-13)>0 | [[NGC {{#expr:2420-13}}]] | | [[NGC {{#expr:2420+7827}}]] | }} {{#ifexpr: (2420-12)>0 | [[NGC {{#expr:2420-12}}]] | | [[NGC {{#expr:2420+7828}}]] | }} {{#ifexpr: (2420-11)>0 | [[NGC {{#expr:2420-11}}]] | | [[NGC {{#expr:2420+7829}}]] | }} {{#ifexpr: (2420-10)>0 | [[NGC {{#expr:2420-10}}]] | | [[NGC {{#expr:2420+7830}}]] | }} {{#ifexpr: (2420-9)>0 | [[NGC {{#expr:2420-9}}]] | | [[NGC {{#expr:2420+7831}}]] | }} {{#ifexpr: (2420-8)>0 | [[NGC {{#expr:2420-8}}]] | | [[NGC {{#expr:2420+7832}}]] | }} {{#ifexpr: (2420-7)>0 | [[NGC {{#expr:2420-7}}]] | | [[NGC {{#expr:2420+7833}}]] | }} {{#ifexpr: (2420-6)>0 | [[NGC {{#expr:2420-6}}]] | | [[NGC {{#expr:2420+7834}}]] | }} {{#ifexpr: (2420-5)>0 | [[NGC {{#expr:2420-5}}]] | | [[NGC {{#expr:2420+7835}}]] | }} {{#ifexpr: (2420-4)>0 | [[NGC {{#expr:2420-4}}]] | | [[NGC {{#expr:2420+7836}}]] | }} {{#ifexpr: (2420-3)>0 | [[NGC {{#expr:2420-3}}]] | | [[NGC {{#expr:2420+7837}}]] | }} {{#ifexpr: (2420-2)>0 | [[NGC {{#expr:2420-2}}]] | | [[NGC {{#expr:2420+7838}}]] | }} {{#ifexpr: (2420-1)>0 | [[NGC {{#expr:2420-1}}]] | | [[NGC {{#expr:2420+7839}}]] | }} NGC 2420 | {{#ifexpr: (2420+1)<7841 | [[NGC {{#expr:2420+1}}]] | | [[NGC {{#expr:2420-7839}}]] | }} {{#ifexpr: (2420+2)<7841 | [[NGC {{#expr:2420+2}}]] | | [[NGC {{#expr:2420-7838}}]] | }} {{#ifexpr: (2420+3)<7841 | [[NGC {{#expr:2420+3}}]] | | [[NGC {{#expr:2420-7837}}]] | }} {{#ifexpr: (2420+4)<7841 | [[NGC {{#expr:2420+4}}]] | | [[NGC {{#expr:2420-7836}}]] | }} {{#ifexpr: (2420+5)<7841 | [[NGC {{#expr:2420+5}}]] | | [[NGC {{#expr:2420-7835}}]] | }} {{#ifexpr: (2420+6)<7841 | [[NGC {{#expr:2420+6}}]] | | [[NGC {{#expr:2420-7834}}]] | }} {{#ifexpr: (2420+7)<7841 | [[NGC {{#expr:2420+7}}]] | | [[NGC {{#expr:2420-7833}}]] | }} {{#ifexpr: (2420+8)<7841 | [[NGC {{#expr:2420+8}}]] | | [[NGC {{#expr:2420-7832}}]] | }} {{#ifexpr: (2420+9)<7841 | [[NGC {{#expr:2420+9}}]] | | [[NGC {{#expr:2420-7831}}]] | }} {{#ifexpr: (2420+10)<7841 | [[NGC {{#expr:2420+10}}]] | | [[NGC {{#expr:2420-7830}}]] | }} {{#ifexpr: (2420+11)<7841 | [[NGC {{#expr:2420+11}}]] | | [[NGC {{#expr:2420-7829}}]] | }} {{#ifexpr: (2420+12)<7841 | [[NGC {{#expr:2420+12}}]] | | [[NGC {{#expr:2420-7828}}]] | }} {{#ifexpr: (2420+13)<7841 | [[NGC {{#expr:2420+13}}]] | | [[NGC {{#expr:2420-7827}}]] | }} {{#ifexpr: (2420+14)<7841 | [[NGC {{#expr:2420+14}}]] | | [[NGC {{#expr:2420-7826}}]] | }} {{#ifexpr: (2420+15)<7841 | [[NGC {{#expr:2420+15}}]] | | [[NGC {{#expr:2420-7825}}]] | }} {{#ifexpr: (2420+16)<7841 | [[NGC {{#expr:2420+16}}]] | | [[NGC {{#expr:2420-7824}}]] | }} {{#ifexpr: (2420+17)<7841 | [[NGC {{#expr:2420+17}}]] | | [[NGC {{#expr:2420-7823}}]] | }} {{#ifexpr: (2420+18)<7841 | [[NGC {{#expr:2420+18}}]] | | [[NGC {{#expr:2420-7822}}]] | }} {{#ifexpr: (2420+19)<7841 | [[NGC {{#expr:2420+19}}]] | | [[NGC {{#expr:2420-7821}}]] | }} {{#ifexpr: (2420+20)<7841 | [[NGC {{#expr:2420+20}}]] | | [[NGC {{#expr:2420-7820}}]] | }} {{#ifexpr: (2420+21)<7841 | [[NGC {{#expr:2420+21}}]] | | [[NGC {{#expr:2420-7819}}]] | }} {{#ifexpr: (2420+22)<7841 | [[NGC {{#expr:2420+22}}]] | | [[NGC {{#expr:2420-7818}}]] | }} {{#ifexpr: (2420+23)<7841 | [[NGC {{#expr:2420+23}}]] | | [[NGC {{#expr:2420-7817}}]] | }} {{#ifexpr: (2420+24)<7841 | [[NGC {{#expr:2420+24}}]] | | [[NGC {{#expr:2420-7816}}]] | }} {{#ifexpr: (2420+25)<7841 | [[NGC {{#expr:2420+25}}]] | [[NGC {{#expr:2420-7815}}]] }}

Gesamtliste
{{#ifeq: 2420||Diese Vorlage benötigt die Nummer im NGC-Katalog als Parameter|}}

{{#ifexpr: (2420-24)>0 | [[NGC {{#expr:2420-24}}]] | | [[NGC {{#expr:2420+7816}}]] | }} {{#ifexpr: (2420-23)>0 | [[NGC {{#expr:2420-23}}]] | | [[NGC {{#expr:2420+7817}}]] | }} {{#ifexpr: (2420-22)>0 | [[NGC {{#expr:2420-22}}]] | | [[NGC {{#expr:2420+7818}}]] | }} {{#ifexpr: (2420-21)>0 | [[NGC {{#expr:2420-21}}]] | | [[NGC {{#expr:2420+7819}}]] | }} {{#ifexpr: (2420-20)>0 | [[NGC {{#expr:2420-20}}]] | | [[NGC {{#expr:2420+7820}}]] | }} {{#ifexpr: (2420-19)>0 | [[NGC {{#expr:2420-19}}]] | | [[NGC {{#expr:2420+7821}}]] | }} {{#ifexpr: (2420-18)>0 | [[NGC {{#expr:2420-18}}]] | | [[NGC {{#expr:2420+7822}}]] | }} {{#ifexpr: (2420-17)>0 | [[NGC {{#expr:2420-17}}]] | | [[NGC {{#expr:2420+7823}}]] | }} {{#ifexpr: (2420-16)>0 | [[NGC {{#expr:2420-16}}]] | | [[NGC {{#expr:2420+7824}}]] | }} {{#ifexpr: (2420-15)>0 | [[NGC {{#expr:2420-15}}]] | | [[NGC {{#expr:2420+7825}}]] | }} {{#ifexpr: (2420-14)>0 | [[NGC {{#expr:2420-14}}]] | | [[NGC {{#expr:2420+7826}}]] | }} {{#ifexpr: (2420-13)>0 | [[NGC {{#expr:2420-13}}]] | | [[NGC {{#expr:2420+7827}}]] | }} {{#ifexpr: (2420-12)>0 | [[NGC {{#expr:2420-12}}]] | | [[NGC {{#expr:2420+7828}}]] | }} {{#ifexpr: (2420-11)>0 | [[NGC {{#expr:2420-11}}]] | | [[NGC {{#expr:2420+7829}}]] | }} {{#ifexpr: (2420-10)>0 | [[NGC {{#expr:2420-10}}]] | | [[NGC {{#expr:2420+7830}}]] | }} {{#ifexpr: (2420-9)>0 | [[NGC {{#expr:2420-9}}]] | | [[NGC {{#expr:2420+7831}}]] | }} {{#ifexpr: (2420-8)>0 | [[NGC {{#expr:2420-8}}]] | | [[NGC {{#expr:2420+7832}}]] | }} {{#ifexpr: (2420-7)>0 | [[NGC {{#expr:2420-7}}]] | | [[NGC {{#expr:2420+7833}}]] | }} {{#ifexpr: (2420-6)>0 | [[NGC {{#expr:2420-6}}]] | | [[NGC {{#expr:2420+7834}}]] | }} {{#ifexpr: (2420-5)>0 | [[NGC {{#expr:2420-5}}]] | | [[NGC {{#expr:2420+7835}}]] | }} {{#ifexpr: (2420-4)>0 | [[NGC {{#expr:2420-4}}]] | | [[NGC {{#expr:2420+7836}}]] | }} {{#ifexpr: (2420-3)>0 | [[NGC {{#expr:2420-3}}]] | | [[NGC {{#expr:2420+7837}}]] | }} {{#ifexpr: (2420-2)>0 | [[NGC {{#expr:2420-2}}]] | | [[NGC {{#expr:2420+7838}}]] | }} {{#ifexpr: (2420-1)>0 | [[NGC {{#expr:2420-1}}]] | | [[NGC {{#expr:2420+7839}}]] | }} NGC 2420 | {{#ifexpr: (2420+1)<7841 | [[NGC {{#expr:2420+1}}]] | | [[NGC {{#expr:2420-7839}}]] | }} {{#ifexpr: (2420+2)<7841 | [[NGC {{#expr:2420+2}}]] | | [[NGC {{#expr:2420-7838}}]] | }} {{#ifexpr: (2420+3)<7841 | [[NGC {{#expr:2420+3}}]] | | [[NGC {{#expr:2420-7837}}]] | }} {{#ifexpr: (2420+4)<7841 | [[NGC {{#expr:2420+4}}]] | | [[NGC {{#expr:2420-7836}}]] | }} {{#ifexpr: (2420+5)<7841 | [[NGC {{#expr:2420+5}}]] | | [[NGC {{#expr:2420-7835}}]] | }} {{#ifexpr: (2420+6)<7841 | [[NGC {{#expr:2420+6}}]] | | [[NGC {{#expr:2420-7834}}]] | }} {{#ifexpr: (2420+7)<7841 | [[NGC {{#expr:2420+7}}]] | | [[NGC {{#expr:2420-7833}}]] | }} {{#ifexpr: (2420+8)<7841 | [[NGC {{#expr:2420+8}}]] | | [[NGC {{#expr:2420-7832}}]] | }} {{#ifexpr: (2420+9)<7841 | [[NGC {{#expr:2420+9}}]] | | [[NGC {{#expr:2420-7831}}]] | }} {{#ifexpr: (2420+10)<7841 | [[NGC {{#expr:2420+10}}]] | | [[NGC {{#expr:2420-7830}}]] | }} {{#ifexpr: (2420+11)<7841 | [[NGC {{#expr:2420+11}}]] | | [[NGC {{#expr:2420-7829}}]] | }} {{#ifexpr: (2420+12)<7841 | [[NGC {{#expr:2420+12}}]] | | [[NGC {{#expr:2420-7828}}]] | }} {{#ifexpr: (2420+13)<7841 | [[NGC {{#expr:2420+13}}]] | | [[NGC {{#expr:2420-7827}}]] | }} {{#ifexpr: (2420+14)<7841 | [[NGC {{#expr:2420+14}}]] | | [[NGC {{#expr:2420-7826}}]] | }} {{#ifexpr: (2420+15)<7841 | [[NGC {{#expr:2420+15}}]] | | [[NGC {{#expr:2420-7825}}]] | }} {{#ifexpr: (2420+16)<7841 | [[NGC {{#expr:2420+16}}]] | | [[NGC {{#expr:2420-7824}}]] | }} {{#ifexpr: (2420+17)<7841 | [[NGC {{#expr:2420+17}}]] | | [[NGC {{#expr:2420-7823}}]] | }} {{#ifexpr: (2420+18)<7841 | [[NGC {{#expr:2420+18}}]] | | [[NGC {{#expr:2420-7822}}]] | }} {{#ifexpr: (2420+19)<7841 | [[NGC {{#expr:2420+19}}]] | | [[NGC {{#expr:2420-7821}}]] | }} {{#ifexpr: (2420+20)<7841 | [[NGC {{#expr:2420+20}}]] | | [[NGC {{#expr:2420-7820}}]] | }} {{#ifexpr: (2420+21)<7841 | [[NGC {{#expr:2420+21}}]] | | [[NGC {{#expr:2420-7819}}]] | }} {{#ifexpr: (2420+22)<7841 | [[NGC {{#expr:2420+22}}]] | | [[NGC {{#expr:2420-7818}}]] | }} {{#ifexpr: (2420+23)<7841 | [[NGC {{#expr:2420+23}}]] | | [[NGC {{#expr:2420-7817}}]] | }} {{#ifexpr: (2420+24)<7841 | [[NGC {{#expr:2420+24}}]] | | [[NGC {{#expr:2420-7816}}]] | }} {{#ifexpr: (2420+25)<7841 | [[NGC {{#expr:2420+25}}]] | [[NGC {{#expr:2420-7815}}]] }} }} Vorlage:Klappleiste/Ende {{#if:|}}

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Offener Sternhaufen {{#if:NGC 2420\|NGC 2420\|NGC 2420}}
{{#ifexist:Media:NGC2420 - SDSS DR14 (panorama).jpg\|Datei:NGC2420 - SDSS DR14 (panorama).jpg\|NGC2420 - SDSS DR14 (panorama).jpg}}
SDSS, Bildwinkel 13,2' × 13,2'
Vorlage:Sternkarte
Vorlage:AladinLite }}
Sternbild	{{#switch:gem	and = Andromeda	ant = Luftpumpe	aps = Paradiesvogel	aql = Adler	aqr = Wassermann	ara = Altar	ari = Widder	aur = Fuhrmann	boo = Bärenhüter	cae = Grabstichel	cam = Giraffe	cap = Steinbock	car = Kiel des Schiffs	cas = Kassiopeia	cen = Zentaur	cep = Kepheus	cet = Walfisch	cha = Chamäleon	cir = Zirkel	cma = Großer Hund	cmi = Kleiner Hund	cnc = Krebs	col = Taube	com = Haar der Berenike	cra = Südliche Krone	crb = Nördliche Krone	crt = Becher	cru = Kreuz des Südens	crv = Rabe	cvn = Jagdhunde	cyg = Schwan	del = Delphin	dor = Schwertfisch	dra = Drache	equ = Füllen	eri = Eridanus	for = Chemischer Ofen	gem = Zwillinge	gru = Kranich	her = Herkules	hor = Pendeluhr	hya = Wasserschlange	hyi = Kleine Wasserschlange	ind = Indus	lac = Eidechse	leo = Löwe	lep = Hase	lib = Waage	lmi = Kleiner Löwe	lup = Wolf	lyn = Luchs	lyr = Leier	men = Tafelberg	mic = Mikroskop	mon = Einhorn	mus = Fliege	nor = Winkelmaß	oct = Oktant	oph = Schlangenträger	ori = Orion	pav = Pfau	peg = Pegasus	per = Perseus	phe = Phönix	pic = Maler	psa = Südlicher Fisch	psc = Fische	pup = Achterdeck des Schiffs	pyx = Schiffskompass	ret = Netz	scl = Bildhauer	sco = Skorpion	sct = Schild	ser = Schlange	sex = Sextant	sge = Pfeil	sgr = Schütze	tau = Stier	tel = Teleskop	tra = Südliches Dreieck	tri = Dreieck	tuc = Tukan	uma = Großer Bär	umi = Kleiner Bär	vel = Segel des Schiffs	vir = Jungfrau	vol = Fliegender Fisch	vul = Fuchs	#default = Kürzel fehlt oder falsch! }}{{#if:\|\|{{#switch:gem	and = [[Kategorie:Andromeda (Sternbild){{#if:	{{{2}}}}}]]	ant = [[Kategorie:Luftpumpe (Sternbild){{#if:	{{{2}}}}}]]	aps = [[Kategorie:Paradiesvogel (Sternbild){{#if:	{{{2}}}}}]]	aql = [[Kategorie:Adler (Sternbild){{#if:	{{{2}}}}}]]	aqr = [[Kategorie:Wassermann (Sternbild){{#if:	{{{2}}}}}]]	ara = [[Kategorie:Altar (Sternbild){{#if:	{{{2}}}}}]]	ari = [[Kategorie:Widder (Sternbild){{#if:	{{{2}}}}}]]	aur = [[Kategorie:Fuhrmann (Sternbild){{#if:	{{{2}}}}}]]	boo = [[Kategorie:Bärenhüter{{#if:	{{{2}}}}}]]	cae = [[Kategorie:Grabstichel (Sternbild){{#if:	{{{2}}}}}]]	cam = [[Kategorie:Giraffe (Sternbild){{#if:	{{{2}}}}}]]	cap = [[Kategorie:Steinbock (Sternbild){{#if:	{{{2}}}}}]]	car = [[Kategorie:Kiel des Schiffs{{#if:	{{{2}}}}}]]	cas = [[Kategorie:Kassiopeia (Sternbild){{#if:	{{{2}}}}}]]	cen = [[Kategorie:Zentaur (Sternbild){{#if:	{{{2}}}}}]]	cep = [[Kategorie:Kepheus (Sternbild){{#if:	{{{2}}}}}]]	cet = [[Kategorie:Walfisch (Sternbild){{#if:	{{{2}}}}}]]	cha = [[Kategorie:Chamäleon (Sternbild){{#if:	{{{2}}}}}]]	cir = [[Kategorie:Zirkel (Sternbild){{#if:	{{{2}}}}}]]	cma = [[Kategorie:Großer Hund{{#if:	{{{2}}}}}]]	cmi = [[Kategorie:Kleiner Hund{{#if:	{{{2}}}}}]]	cnc = [[Kategorie:Krebs (Sternbild){{#if:	{{{2}}}}}]]	col = [[Kategorie:Taube (Sternbild){{#if:	{{{2}}}}}]]	com = [[Kategorie:Haar der Berenike{{#if:	{{{2}}}}}]]	cra = [[Kategorie:Südliche Krone{{#if:	{{{2}}}}}]]	crb = [[Kategorie:Nördliche Krone{{#if:	{{{2}}}}}]]	crt = [[Kategorie:Becher (Sternbild){{#if:	{{{2}}}}}]]	cru = [[Kategorie:Kreuz des Südens{{#if:	{{{2}}}}}]]	crv = [[Kategorie:Rabe (Sternbild){{#if:	{{{2}}}}}]]	cvn = [[Kategorie:Jagdhunde (Sternbild){{#if:	{{{2}}}}}]]	cyg = [[Kategorie:Schwan (Sternbild){{#if:	{{{2}}}}}]]	del = [[Kategorie:Delphin (Sternbild){{#if:	{{{2}}}}}]]	dor = [[Kategorie:Schwertfisch (Sternbild){{#if:	{{{2}}}}}]]	dra = [[Kategorie:Drache (Sternbild){{#if:	{{{2}}}}}]]	equ = [[Kategorie:Füllen (Sternbild){{#if:	{{{2}}}}}]]	eri = [[Kategorie:Eridanus (Sternbild){{#if:	{{{2}}}}}]]	for = [[Kategorie:Chemischer Ofen{{#if:	{{{2}}}}}]]	gem = [[Kategorie:Zwillinge (Sternbild){{#if:	{{{2}}}}}]]	gru = [[Kategorie:Kranich (Sternbild){{#if:	{{{2}}}}}]]	her = [[Kategorie:Herkules (Sternbild){{#if:	{{{2}}}}}]]	hor = [[Kategorie:Pendeluhr (Sternbild){{#if:	{{{2}}}}}]]	hya = [[Kategorie:Wasserschlange (Sternbild){{#if:	{{{2}}}}}]]	hyi = [[Kategorie:Kleine Wasserschlange{{#if:	{{{2}}}}}]]	ind = [[Kategorie:Indianer (Sternbild){{#if:	{{{2}}}}}]]	lac = [[Kategorie:Eidechse (Sternbild){{#if:	{{{2}}}}}]]	leo = [[Kategorie:Löwe (Sternbild){{#if:	{{{2}}}}}]]	lep = [[Kategorie:Hase (Sternbild){{#if:	{{{2}}}}}]]	lib = [[Kategorie:Waage (Sternbild){{#if:	{{{2}}}}}]]	lmi = [[Kategorie:Kleiner Löwe{{#if:	{{{2}}}}}]]	lup = [[Kategorie:Wolf (Sternbild){{#if:	{{{2}}}}}]]	lyn = [[Kategorie:Luchs (Sternbild){{#if:	{{{2}}}}}]]	lyr = [[Kategorie:Leier (Sternbild){{#if:	{{{2}}}}}]]	men = [[Kategorie:Tafelberg (Sternbild){{#if:	{{{2}}}}}]]	mic = [[Kategorie:Mikroskop (Sternbild){{#if:	{{{2}}}}}]]	mon = [[Kategorie:Einhorn (Sternbild){{#if:	{{{2}}}}}]]	mus = [[Kategorie:Fliege (Sternbild){{#if:	{{{2}}}}}]]	nor = [[Kategorie:Winkelmaß (Sternbild){{#if:	{{{2}}}}}]]	oct = [[Kategorie:Oktant (Sternbild){{#if:	{{{2}}}}}]]	oph = [[Kategorie:Schlangenträger{{#if:	{{{2}}}}}]]	ori = [[Kategorie:Orion (Sternbild){{#if:	{{{2}}}}}]]	pav = [[Kategorie:Pfau (Sternbild){{#if:	{{{2}}}}}]]	peg = [[Kategorie:Pegasus (Sternbild){{#if:	{{{2}}}}}]]	per = [[Kategorie:Perseus (Sternbild){{#if:	{{{2}}}}}]]	phe = [[Kategorie:Phönix (Sternbild){{#if:	{{{2}}}}}]]	pic = [[Kategorie:Maler (Sternbild){{#if:	{{{2}}}}}]]	psa = [[Kategorie:Südlicher Fisch{{#if:	{{{2}}}}}]]	psc = [[Kategorie:Fische (Sternbild){{#if:	{{{2}}}}}]]	pup = [[Kategorie:Achterdeck des Schiffs{{#if:	{{{2}}}}}]]	pyx = [[Kategorie:Schiffskompass (Sternbild){{#if:	{{{2}}}}}]]	ret = [[Kategorie:Netz (Sternbild){{#if:	{{{2}}}}}]]	scl = [[Kategorie:Bildhauer (Sternbild){{#if:	{{{2}}}}}]]	sco = [[Kategorie:Skorpion (Sternbild){{#if:	{{{2}}}}}]]	sct = [[Kategorie:Schild (Sternbild){{#if:	{{{2}}}}}]]	ser = [[Kategorie:Schlange (Sternbild){{#if:	{{{2}}}}}]]	sex = [[Kategorie:Sextant (Sternbild){{#if:	{{{2}}}}}]]	sge = [[Kategorie:Pfeil (Sternbild){{#if:	{{{2}}}}}]]	sgr = [[Kategorie:Schütze (Sternbild){{#if:	{{{2}}}}}]]	tau = [[Kategorie:Stier (Sternbild){{#if:	{{{2}}}}}]]	tel = [[Kategorie:Teleskop (Sternbild){{#if:	{{{2}}}}}]]	tra = [[Kategorie:Südliches Dreieck{{#if:	{{{2}}}}}]]	tri = [[Kategorie:Dreieck (Sternbild){{#if:	{{{2}}}}}]]	tuc = [[Kategorie:Tukan (Sternbild){{#if:	{{{2}}}}}]]	uma = [[Kategorie:Großer Bär{{#if:	{{{2}}}}}]]	umi = [[Kategorie:Kleiner Bär{{#if:	{{{2}}}}}]]	vel = [[Kategorie:Segel des Schiffs{{#if:	{{{2}}}}}]]	vir = [[Kategorie:Jungfrau (Sternbild){{#if:	{{{2}}}}}]]	vol = [[Kategorie:Fliegender Fisch (Sternbild){{#if:	{{{2}}}}}]]	vul = [[Kategorie:Fuchs (Sternbild){{#if:	{{{2}}}}}]]	nav =	#default = {{#if:	}} }}}}
Position Äquinoktium: J2000.0
Rektaszension	Vorlage:RektaszensionEasy <ref name="NED">NASA/IPAC Extragalactic Database</ref>
Deklination	Vorlage:DeklinationEasy <ref name="NED">NASA/IPAC Extragalactic Database</ref>
Erscheinungsbild
Klassifikation	I2r <ref name="SEDS">SEDS: NGC 2420</ref>
Helligkeit (visuell)	8,3 mag <ref name="SEDS"/>
Helligkeit (B-Band)	9,0 mag
Winkelausdehnung	6.0 <ref name="SEDS"/>
Anzahl Sterne	> 300
Hellster Stern	11 mag
Veränderliche Sterne
Rötung (Farbexzess E(B-V))	0,054 ± 0,004
Physikalische Daten
Zugehörigkeit	Milchstraße, ca. 3000 Lichtjahre oberhalb der Galaktischen Scheibe
Rotverschiebung
Radialgeschwindigkeit	km/s
Entfernung <ref>Webda</ref>	{{#if:10000\|10000 Lj{{#if:3085\| (3085 pc)}}\|3085 pc}}
Absolute Helligkeit	mag
Masse	M_☉
Durchmesser	30 Lj
Alter	2,0 ± 0,2 Milliarden Jahre
Metallizität [Fe/H]	ca. −0,3
{{#if:2420\|Geschichte\|Geschichte}}
Entdeckt von	William Herschel
Entdeckungszeit	19. November 1783Vorlage:Infobox Astronomie/Entdeckungskategorie
Katalogbezeichnungen
{{#if:\| M {{{MES}}} •}}{{#if:2420\| NGC 2420 •}}{{#if:\| IC {{{IC}}} •}}{{#if:0735+216\| C 0735+216 •}}{{#if:\| 2MASS {{{2MASS}}} •}}{{#if:488\| OCl 488 •}}{{#if:69\| Mel 69 •}}{{#if:154\| Cr 154 •}}{{#if:\| Dun {{{Dun}}} •}}{{#if:364\| Lund 364 •}}{{#if:\| ESO {{{ESO}}} •}}{{#if:\| IRAS {{{IRAS}}} •}}{{#if:1549\| GC 1549 •}}{{#if:VI 1\| H VI 1 •}}{{#if:458\| h 458 •}}{{#if:Raab 56\| Raab 56}}