Epsilon Reticuli

{{#if:\|{{{Typ}}}\|Doppelstern}}; {{#if:ε Reticuli\|ε Reticuli\|Epsilon Reticuli}}
	{{#ifexist:Media:\|[[Datei:\|310px\|zentriert\|alt=\|]]\|}}
	Vorlage:Sternkarte
	{{{Kartentext}}}
Beobachtungsdaten; Äquinoktium: J2000.0, Epoche: J2000.0
	Vorlage:AladinLite
Rektaszension	{{#if:04/16/29\|Vorlage:RektaszensionEasy \| }}
Deklination	{{#if:-/59/18/08\|Vorlage:DeklinationEasy \| }}
Scheinbare Helligkeit	4,4 mag
Bekannte Exoplaneten	1
	Position des Begleiters {{#if:\| ()}}
Winkelabstand	{{{Winkelabstand}}}
Positionswinkel	{{{Positionswinkel}}}
Astrometrie
Radialgeschwindigkeit	(+29,3 ± 0,9) km/s
Parallaxe	(54,84 ± 0,50) mas
Entfernung	{{#if:(59,5 ± 0,5)\|(59,5 ± 0,5) Lj{{#if:(18,2 ± 0,2)\|; ((18,2 ± 0,2) pc)}}\|(18,2 ± 0,2) pc}}
Absolute visuelle Helligkeit Mvis	mag
Absolute bolometrische Helligkeit Mbol	mag
	Veralteter Parameter "Absolut" !
Eigenbewegung
Rektaszensionsanteil:	−48 mas/a
Deklinationsanteil:	−168 mas/a
Orbit
Periode
Große Halbachse
Exzentrizität
Periastron
Apastron
Bahnneigung
Argument des Knotens
Epoche des Periastrons
Argument der Periapsis
Einzeldaten
Namen	{{#if:A\|A\|A}}; {{#if:B\|B\|B}}
	Beobachtungsdaten }}
B\|B}}	}}
B\|B}}	}}
B\|B}}	{{#if:12,5\|12,5 mag}} }}
	Spektrum und Indices }}
A\|A}}	K2 IVa

<templatestyles src="Infobox Doppelstern/styles.css" />{{#if:{{#invoke:Expr|TemplateBooland}}|<{{#ifeq:|/|span|div id="coordinates"}} class="coordinates" {{#ifexpr: {{#if:04/16/29|1|0}} and {{#if:-/59/18/08|1|0}} and {{#if:{{#if:Epsilon Reticuli|Epsilon Reticuli|Epsilon Reticuli}}|1|0}}

    |>[https://geohack.toolforge.org/skyhack.php?ra={{#expr:+{{#ifeq:/04/16/29

|{{#titleparts:/04/16/29|1|{{#expr:1+1}}}} | |{{#titleparts:/04/16/29|1|{{#expr:1+1}}}} }}+{{#ifeq:/04/16/29 |{{#titleparts:/04/16/29|1|{{#expr:1+2}}}} | |{{#titleparts:/04/16/29|1|{{#expr:1+2}}}} }}/60+{{#ifeq:/04/16/29/00 |{{#titleparts:/04/16/29/00|1|{{#expr:1+3}}}} | |{{#titleparts:/04/16/29/00|1|{{#expr:1+3}}}} }}/3600}}&de={{#ifeq:{{#ifeq:/-/59/18/08 |{{#titleparts:/-/59/18/08|1|{{#expr:1+1}}}} | |{{#titleparts:/-/59/18/08|1|{{#expr:1+1}}}} }} | -

        |{{#expr:-1*({{#ifeq:/-/59/18/08

|{{#titleparts:/-/59/18/08|1|{{#expr:1+2}}}} | |{{#titleparts:/-/59/18/08|1|{{#expr:1+2}}}} }}+{{#ifeq:/-/59/18/08 |{{#titleparts:/-/59/18/08|1|{{#expr:1+3}}}} | |{{#titleparts:/-/59/18/08|1|{{#expr:1+3}}}} }}/60+{{#ifeq:/-/59/18/08/00 |{{#titleparts:/-/59/18/08/00|1|{{#expr:1+4}}}} | |{{#titleparts:/-/59/18/08/00|1|{{#expr:1+4}}}} }}/3600)}}|{{#expr: +{{#ifeq:/-/59/18/08 |{{#titleparts:/-/59/18/08|1|{{#expr:1+2}}}} | |{{#titleparts:/-/59/18/08|1|{{#expr:1+2}}}} }}+{{#ifeq:/-/59/18/08 |{{#titleparts:/-/59/18/08|1|{{#expr:1+3}}}} | |{{#titleparts:/-/59/18/08|1|{{#expr:1+3}}}} }}/60+{{#ifeq:/-/59/18/08/00 |{{#titleparts:/-/59/18/08/00|1|{{#expr:1+4}}}} | |{{#titleparts:/-/59/18/08/00|1|{{#expr:1+4}}}}

}}/3600 }}}}&size={{#expr:{{#if:{{#if:1|1|1.0}}|{{#if:1|1|1.0}}|0.1}}/60}}&name=%7B%7B%23if%3AEpsilon+Reticuli%7CEpsilon+Reticuli%7CEpsilon+Reticuli%7D%7D{{#if:Epsilon Reticuli|&object=%5B%5B%3AVorlage%3AStr%20replace%5D%5D}}{{#if: |&viz1=%5B%5B%3AVorlage%3AStr%20replace%5D%5D}}{{#if: |&viz2=%5B%5B%3AVorlage%3AStr%20replace%5D%5D}}{{#if: |&viz3=%5B%5B%3AVorlage%3AStr%20replace%5D%5D}}{{#if: |&viz4=%5B%5B%3AVorlage%3AStr%20replace%5D%5D}}{{#if: |&viz5=%5B%5B%3AVorlage%3AStr%20replace%5D%5D}}&_globe:= Datenbanklinks zu {{#if:{{#if:Epsilon Reticuli|Epsilon Reticuli|Epsilon Reticuli}}|{{#if:Epsilon Reticuli|Epsilon Reticuli|Epsilon Reticuli}}|Epsilon Reticuli}}]|style="background:#FFC;">{{CoordinateSkyNO{{#if:|x}}}}}}</{{#ifeq:|/|span|div}}>|{{#if:||

Koordinaten fehlen oder unvollständig!

Vorlage:Infobox Doppelstern/Wartung}}}}

{{#if:4,412,5| {{#if:| {{#if:| {{#if:4,412,5| {{#if:K2 IVaD| {{#if:K2 IVaD| {{#ifexpr:{{#invoke:Expr|TemplateBooland}}|| rowspan=2 style="vertical-align:middle" | Spektralklasse|| style="vertical-align:middle" | Spektralklasse }} {{#if:K2 IVa|

}

{{#if:D| {{#if:K2 IVa||-|}} | {{#if:B|B|B}} | style="white-space:nowrap;" | D |}} }} |- {{#if:| {{#ifexpr:{{#invoke:Expr|TemplateBooland}}|| rowspan=2 style="vertical-align:middle" | B−V-Farbindex|| style="vertical-align:middle" | B−V-Farbindex}} {{#if:| | {{#if:A|A|A}} | style="white-space:nowrap;" | |}} {{#if:| {{#if:||-|}} | {{#if:B|B|B}} | style="white-space:nowrap;" | |}} }} |- {{#if:| {{#ifexpr:{{#invoke:Expr|TemplateBooland}}|| rowspan=2 style="vertical-align:middle" | U−B-Farbindex|| style="vertical-align:middle" | U−B-Farbindex}} {{#if:| | {{#if:A|A|A}} | style="white-space:nowrap;" | |}} {{#if:| {{#if:||-|}} | {{#if:B|B|B}} | style="white-space:nowrap;" | |}} }} |- {{#if:| |- | colspan="3" class="ibheadercomp" | Physikalische Eigenschaften }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | rel. Helligkeit
(G-Band) | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| mag}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| mag}} }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | rel. Helligkeit
(J-Band) | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| mag}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| mag}} }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Absolute vis.
Helligkeit M_vis | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| mag}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| mag}} }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Absolute bol.
Helligkeit M_bol | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| mag}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| mag}} }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Masse | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| M_☉}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| M_☉}} }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Radius | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| R_☉}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| R_☉}} }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Leuchtkraft | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| L_☉}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| L_☉}} }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Effektive Temperatur | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| K}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| K}} }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Metallizität [Fe/H] | {{#if:A|A|A}} | style="white-space:nowrap;" | |- | {{#if:B|B|B}} | style="white-space:nowrap;" | }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Rotationsdauer | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:| d}} |- | {{#if:B|B|B}} | style="white-space:nowrap;" | {{#if:| d}} }} |- {{#if:| | Alter | colspan="2" style="white-space:nowrap;" | }} |- {{#if:| | rowspan=2 style="vertical-align:middle" | Alter | {{#if:A|A|A}} | style="white-space:nowrap;" | a |- | {{#if:B|B|B}} | style="white-space:nowrap;" | a }} |- {{#if: ε Reticuli−59° 811167.3135527442199212334638508/2041/1CPD −59° 324, GJ 9153 | ! colspan="3" class="ibheader" | Andere Bezeichnungen und Katalogeinträge |-

| colspan="3" style="padding:0;" |

{{#if:ε Reticuli|}}{{#if:|}}{{#if:|}}{{#if:−59° 811|}}{{#if:167.3|}}{{#if:1355|}}{{#if:27442|}}{{#if:233463 |}}{{#if:8508/2041/1|}}{{#if:19921 |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if:04165-5918 |}}{{#if:CPD −59° 324, GJ 9153WD 0415-594 |{{#if:CPD −59° 324, GJ 9153 ||{{#if:WD 0415-594|}}}} }}

Katalog	{{#if:A\|A\|A}}	{{#if:B\|B\|B}}
Bayer-Bezeichnung	ε Reticuli
Flamsteed-Bezeichnung	{{{Flamsteed}}}
Bonner Durchmusterung	BD {{{BD}}}
Córdoba-Durchmusterung	CD −59° 811
Gliese-Katalog	GJ 167.3 {{#ifeq:{{#iferror:{{#expr: 1 * 167.3}}\|???\|[1]}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * 167.3}}\|???\|[2]}}}}
Bright-Star-Katalog	HR 1355 {{#ifeq:{{#iferror:{{#expr: 1 * 1355}}\|???\|{{#ifexpr:1355 <> (floor 1355) or 1355 < 1 or 1355 > 9110 \|???\|[3]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * 1355}}\|???\|{{#ifexpr:1355 <> (floor 1355) or 1355 < 1 or 1355 > 9110 \|???\|[4]}}}}}}
Henry-Draper-Katalog	HD 27442 {{#ifeq:{{#iferror:{{#expr: 1 * 27442}}\|???\|{{#ifexpr:27442 <> (floor 27442) or 27442 < 1 or 27442 > 359083\|???\|{{#ifexpr: 27442 >= 1 and 27442 <= 272150\|[5]\|[6]}}}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * 27442}}\|???\|{{#ifexpr:27442 <> (floor 27442) or 27442 < 1 or 27442 > 359083\|???\|{{#ifexpr: 27442 >= 1 and 27442 <= 272150\|[7]\|[8]}}}}}}}}
SAO-Katalog	SAO 233463 {{#ifeq:{{#iferror:{{#expr: 1 * 233463}}\|???\|{{#ifexpr:233463 <> (floor 233463) or 233463 < 1 or 233463 > 258997 \|???\|[9]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * 233463}}\|???\|{{#ifexpr:233463 <> (floor 233463) or 233463 < 1 or 233463 > 258997 \|???\|[10]}}}}}}
Tycho-Katalog	TYC {{#iferror:{{#expr: {{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} }}{{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} }}{{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} }}}}\|{{#if:\|\|}}8508/2041/1\|{{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} }}-{{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} }}-{{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} }}[https://cdsarc.u-strasbg.fr/viz-bin/VizieR-5?-source=I/259&-out.all&-out.max=100&TYC1={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} }}&TYC2={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} }}&TYC3={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} }}]}}
Hipparcos-Katalog	HIP 19921 {{#ifeq:{{#iferror:{{#expr: 1 * 19921}}\|???\|{{#ifexpr:19921 <> (floor 19921) or 19921 < 1 or 19921 > 258997 \|???\|[11]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * 19921}}\|???\|{{#ifexpr:19921 <> (floor 19921) or 19921 < 1 or 19921 > 258997 \|???\|[12]}}}}}}
New General Catalogue	NGC
Bonner Durchmusterung	BD	BD
Córdoba-Durchmusterung	CD	CD
Gliese-Katalog	GJ {{#ifeq:{{#iferror:{{#expr: 1 * {{{GJ1}}}}}\|???\|[13]}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{GJ1}}}}}\|???\|[14]}}}}	GJ {{#ifeq:{{#iferror:{{#expr: 1 * {{{GJ2}}}}}\|???\|[15]}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{GJ2}}}}}\|???\|[16]}}}}
Bright-Star-Katalog	HR {{#ifeq:{{#iferror:{{#expr: 1 * {{{HR1}}}}}\|???\|{{#ifexpr:{{{HR1}}} <> (floor {{{HR1}}}) or {{{HR1}}} < 1 or {{{HR1}}} > 9110 \|???\|[17]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{HR1}}}}}\|???\|{{#ifexpr:{{{HR1}}} <> (floor {{{HR1}}}) or {{{HR1}}} < 1 or {{{HR1}}} > 9110 \|???\|[18]}}}}}}	HR {{#ifeq:{{#iferror:{{#expr: 1 * {{{HR2}}}}}\|???\|{{#ifexpr:{{{HR2}}} <> (floor {{{HR2}}}) or {{{HR2}}} < 1 or {{{HR2}}} > 9110 \|???\|[19]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{HR2}}}}}\|???\|{{#ifexpr:{{{HR2}}} <> (floor {{{HR2}}}) or {{{HR2}}} < 1 or {{{HR2}}} > 9110 \|???\|[20]}}}}}}
Henry-Draper-Katalog	HD {{#ifeq:{{#iferror:{{#expr: 1 * {{{HD1}}}}}\|???\|{{#ifexpr:{{{HD1}}} <> (floor {{{HD1}}}) or {{{HD1}}} < 1 or {{{HD1}}} > 359083\|???\|{{#ifexpr: {{{HD1}}} >= 1 and {{{HD1}}} <= 272150\|[21]\|[22]}}}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{HD1}}}}}\|???\|{{#ifexpr:{{{HD1}}} <> (floor {{{HD1}}}) or {{{HD1}}} < 1 or {{{HD1}}} > 359083\|???\|{{#ifexpr: {{{HD1}}} >= 1 and {{{HD1}}} <= 272150\|[23]\|[24]}}}}}}}}	HD {{#ifeq:{{#iferror:{{#expr: 1 * {{{HD2}}}}}\|???\|{{#ifexpr:{{{HD2}}} <> (floor {{{HD2}}}) or {{{HD2}}} < 1 or {{{HD2}}} > 359083\|???\|{{#ifexpr: {{{HD2}}} >= 1 and {{{HD2}}} <= 272150\|[25]\|[26]}}}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{HD2}}}}}\|???\|{{#ifexpr:{{{HD2}}} <> (floor {{{HD2}}}) or {{{HD2}}} < 1 or {{{HD2}}} > 359083\|???\|{{#ifexpr: {{{HD2}}} >= 1 and {{{HD2}}} <= 272150\|[27]\|[28]}}}}}}}}
SAO-Katalog	SAO {{#ifeq:{{#iferror:{{#expr: 1 * {{{SAO1}}}}}\|???\|{{#ifexpr:{{{SAO1}}} <> (floor {{{SAO1}}}) or {{{SAO1}}} < 1 or {{{SAO1}}} > 258997 \|???\|[29]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{SAO1}}}}}\|???\|{{#ifexpr:{{{SAO1}}} <> (floor {{{SAO1}}}) or {{{SAO1}}} < 1 or {{{SAO1}}} > 258997 \|???\|[30]}}}}}}	SAO {{#ifeq:{{#iferror:{{#expr: 1 * {{{SAO2}}}}}\|???\|{{#ifexpr:{{{SAO2}}} <> (floor {{{SAO2}}}) or {{{SAO2}}} < 1 or {{{SAO2}}} > 258997 \|???\|[31]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{SAO2}}}}}\|???\|{{#ifexpr:{{{SAO2}}} <> (floor {{{SAO2}}}) or {{{SAO2}}} < 1 or {{{SAO2}}} > 258997 \|???\|[32]}}}}}}
Tycho-Katalog	TYC Vorlage:Str replace[https://cdsarc.u-strasbg.fr/viz-bin/VizieR-5?-source=I/259&-out.all&-out.max=100&TYC1={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} }}&TYC2={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} }}&TYC3={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} }}]	TYC Vorlage:Str replace[https://cdsarc.u-strasbg.fr/viz-bin/VizieR-5?-source=I/259&-out.all&-out.max=100&TYC1={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+1}}}} }}&TYC2={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+2}}}} }}&TYC3={{#ifeq:/Vorlage:Str replace \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} \| \|{{#titleparts:/Vorlage:Str replace\|1\|{{#expr:1+3}}}} }}]
Hipparcos-Katalog	HIP	HIP
WDS-Katalog	WDS 04165-5918
Weitere Bezeichnungen:	CPD −59° 324, GJ 9153		WD 0415-594

}}

|- {{#if:| | colspan="3" style="white-space:normal;" | }} |}{{#if:|}}{{#if:||}}{{#ifexpr: {{#if:04/16/29|1|0}} * {{#if:-/59/18/08|1|0}} * {{#if:1|1|0}}||}}{{#if:|{{#if:||}}}}{{#if:|}}{{#if:|}}{{#if:||{{#if:|}}{{#if:4.4|{{#ifexpr: 4.4 < 1.5 | }}{{#ifexpr: 4.4 >= 1.5 and 4.4 < 2.5 |}}{{#ifexpr: 4.4 >= 2.5 and 4.4 < 3.5 |}}{{#ifexpr: 4.4 >= 3.5 and 4.4 < 4.5 |}}{{#ifexpr: 4.4 >= 4.5 | }}}}{{#if: {{#iferror:{{#ifexpr:{{#switch: | R+ = abs | R- = -abs | Z = trunc | Z+ | N = abs trunc

| Z- = -abs trunc}}(1 ) = (1 ) {{#if: | round ({{{3}}}) }} | 1 }} }}|{{#ifexpr: 1>0| }}}}{{#if:1355|}}{{#if:167.3|}}{{#if:|

}}}}

ε Reticuli (Epsilon Reticuli, kurz ε Ret) ist ein etwa 60 Lichtjahre entferntes Sternsystem im Sternbild Netz.

Es handelt sich um ein Doppelsternsystem, bestehend aus einem Unterriesen der Spektralklasse K2, ε Reticuli A, und einem Weißen Zwerg, ε Reticuli B. Die Winkeldistanz zwischen den beiden Komponenten beträgt gegenwärtig etwa 13", was rund 240 Astronomischen Einheiten entspricht. ε Reticuli A wird von einem substellaren Objekt umrundet.

Exoplanet

ε Reticuli b, manchmal auch ε Reticuli Ab, ist ein durch Radialgeschwindigkeitsmessungen entdeckter Exoplaneten-Kandidat, der ε Reticuli A umkreist. Er weist eine Umlaufperiode von rund 430 Tagen auf und hat eine Mindestmasse von ungefähr 1,6 Jupitermassen. Die Bahn besitzt eine geringe Exzentrizität von ca. 0,1, die große Halbachse misst etwa 1,3 Astronomischen Einheiten.

Quellen

SIMBAD-Seite zu ε Reticuli
G. Chauvin, A.-M. Lagrange, S. Udry, M. Mayor: Characterization of the long-period companions of the exoplanet host stars: HD 196885, HD 1237 and HD 27442. VLT/NACO and SINFONI near-infrared, follow-up imaging and spectroscopy. In: Astronomy and Astrophysics. Bd. 475, Nr. 2, 2007, S. 723ff. {{#invoke:Vorlage:bibcode|f|errHide=1|errNS=0|errClasses=editoronly error|errCat=Wikipedia:Vorlagenfehler/Parameter:bibcode}}
M. Mugrauer, Ralph Neuhäuser, T. Mazeh: The multiplicity of exoplanet host stars. Spectroscopic confirmation of the companions GJ 3021 B and HD 27442 B, one new planet host triple-star system, and global statistics. In: Astronomy and Astrophysics. Bd. 469, Nr. 2, 2007, S. 755ff. {{#invoke:Vorlage:bibcode|f|errHide=1|errNS=0|errClasses=editoronly error|errCat=Wikipedia:Vorlagenfehler/Parameter:bibcode}}