HD 195019

{{#if:\|{{{Typ}}}\|Doppelstern}}; {{#if:HD 195019\|HD 195019\|HD 195019}}
	{{#ifexist:Media:\|[[Datei:\|310px\|zentriert\|alt=\|]]\|}}
	Vorlage:Sternkarte
	{{{Kartentext}}}
Beobachtungsdaten; Äquinoktium: J2000.0, Epoche: J2000.0
	Vorlage:AladinLite
Rektaszension	{{#if:20/28/19\|Vorlage:RektaszensionEasy \| }}
Deklination	{{#if:+/18/46/10\|Vorlage:DeklinationEasy \| }}
Scheinbare Helligkeit	6,9 mag
Bekannte Exoplaneten	1
	Position des Begleiters {{#if:\| ()}}
Winkelabstand	{{{Winkelabstand}}}
Positionswinkel	{{{Positionswinkel}}}
Astrometrie
Radialgeschwindigkeit	(−93 ± 2) km/s
Parallaxe	(26,77 ± 0,89) mas
Entfernung	{{#if:(122 ± 4)\|(122 ± 4) Lj{{#if:(37,4 ± 1,2)\|; ((37,4 ± 1,2) pc)}}\|(37,4 ± 1,2) pc}}
Absolute visuelle Helligkeit Mvis	mag
Absolute bolometrische Helligkeit Mbol	mag
	Veralteter Parameter "Absolut" !
Eigenbewegung
Rektaszensionsanteil:	mas/a
Deklinationsanteil:	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:ca. 10\|ca. 10 mag}} }}
	Spektrum und Indices }}
A\|A}}	G3 IV-V

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{{#if:| {{#if:G3 IV-V||-|}} | {{#if:B|B|B}} | style="white-space:nowrap;" | |}} }} |- {{#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:ca. (0,98 ± 0,06)| |- | 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:ca. (0,98 ± 0,06)| | rowspan=2 style="vertical-align:middle" | Masse | {{#if:A|A|A}} | style="white-space:nowrap;" | {{#if:ca. (0,98 ± 0,06)|ca. (0,98 ± 0,06) 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: +18° 45051950191009701061381640/113/1Ho 131 | ! colspan="3" class="ibheader" | Andere Bezeichnungen und Katalogeinträge |-

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

{{#if:|}}{{#if:|}}{{#if:+18° 4505|}}{{#if:|}}{{#if:|}}{{#if:|}}{{#if:195019|}}{{#if:106138 |}}{{#if:1640/113/1|}}{{#if:100970 |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if: |}}{{#if:Ho 131 |{{#if:Ho 131 ||{{#if:|}}}} }}

Katalog	{{#if:A\|A\|A}}	{{#if:B\|B\|B}}
Bayer-Bezeichnung	{{{Bayer}}}
Flamsteed-Bezeichnung	{{{Flamsteed}}}
Bonner Durchmusterung	BD +18° 4505
Córdoba-Durchmusterung	CD {{{CD}}}
Gliese-Katalog	GJ {{{GJ}}} {{#ifeq:{{#iferror:{{#expr: 1 * {{{GJ}}}}}\|???\|[1]}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{GJ}}}}}\|???\|[2]}}}}
Bright-Star-Katalog	HR {{{HR}}} {{#ifeq:{{#iferror:{{#expr: 1 * {{{HR}}}}}\|???\|{{#ifexpr:{{{HR}}} <> (floor {{{HR}}}) or {{{HR}}} < 1 or {{{HR}}} > 9110 \|???\|[3]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * {{{HR}}}}}\|???\|{{#ifexpr:{{{HR}}} <> (floor {{{HR}}}) or {{{HR}}} < 1 or {{{HR}}} > 9110 \|???\|[4]}}}}}}
Henry-Draper-Katalog	HD 195019 {{#ifeq:{{#iferror:{{#expr: 1 * 195019}}\|???\|{{#ifexpr:195019 <> (floor 195019) or 195019 < 1 or 195019 > 359083\|???\|{{#ifexpr: 195019 >= 1 and 195019 <= 272150\|[5]\|[6]}}}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * 195019}}\|???\|{{#ifexpr:195019 <> (floor 195019) or 195019 < 1 or 195019 > 359083\|???\|{{#ifexpr: 195019 >= 1 and 195019 <= 272150\|[7]\|[8]}}}}}}}}
SAO-Katalog	SAO 106138 {{#ifeq:{{#iferror:{{#expr: 1 * 106138}}\|???\|{{#ifexpr:106138 <> (floor 106138) or 106138 < 1 or 106138 > 258997 \|???\|[9]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * 106138}}\|???\|{{#ifexpr:106138 <> (floor 106138) or 106138 < 1 or 106138 > 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:\|\|}}1640/113/1\|{{#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 100970 {{#ifeq:{{#iferror:{{#expr: 1 * 100970}}\|???\|{{#ifexpr:100970 <> (floor 100970) or 100970 < 1 or 100970 > 258997 \|???\|[11]}}}}\|???\|{{#if:\|\|}}\|{{#iferror:{{#expr: 1 * 100970}}\|???\|{{#ifexpr:100970 <> (floor 100970) or 100970 < 1 or 100970 > 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
Weitere Bezeichnungen:	Ho 131

}}

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}}}}

HD 195019 ist ein etwa 37 Parsec entferntes Sternsystem im Sternbild Delphin. Es besteht aus zwei Sternen in einem Winkelabstand von 4",1 (ca. 150 AE) mit einem Positionswinkel von 324°. Zudem wird die Hauptkomponente von einem spektroskopischen Begleiter umrundet, bei dem es sich um einen potentiellen Exoplaneten handelt. Der Zentralstern weist eine scheinbare Helligkeit von 6,9 mag auf und gehört zur Spektralklasse G3 IV-V, seine Masse entspricht etwa derjenigen der Sonne.

Potentieller Exoplanet

HD 195019 b ist ein potentieller Exoplanet, der die Hauptkomponente mit einer Periode von 18 Tagen umrundet, wobei seine Bahn mit etwa 0,01 eine geringe Exzentrizität aufweist. Seine Mindestmasse beträgt (3,7 ± 0,3) Jupitermassen. Es könnte sich um einen „Hot Jupiter“ mit einer geschätzten mittleren Oberflächentemperatur von 755 Kelvin handeln. Das Objekt wurde 1998 von Geoffrey Marcy et al. mit der Radialgeschwindigkeitsmessungsmethode entdeckt.