HD 170069

	HD 170069
Observationsdata; Epok: J2000.0
Stjärnbild	Kikaren
Rektascension	18t 29m 55,9414 s
Deklination	-47° 13′ 13,9500 ″
Skenbar magnitud ()	5,68 ± 0,01
Stjärntyp
Spektraltyp	K2 III
B–V	+1,26
Astrometri
Radialhastighet ()	-18 ± 4,3 km/s
Egenrörelse (µ)	RA: +28,685 mas/år; Dek.: -12,434 mas/år
Parallax ()	5,5748 ± 0,1894
Avstånd	590 ± 20 lå (179 ± 6 pc)
Absolut magnitud ()	-0,78
Detaljer
Massa	4,08 M☉
Radie	23,69 R☉
Luminositet	217 L☉
Temperatur	4 490 ± 125 K
Vinkelhastighet	<1 km/s
Andra beteckningar
	15 G. Telescopii, HD 170069, CD-47 12319, CPD-47 8894, GSC 08363-01430, HIC 90662, HIP 90662, HR 6922, IRAS 18261-4715, 2MASS J18295595-4713137, PPM 324154, SAO 229064, TYC 8363-1430-1, Gaia DR2 6708177894848059520, Gaia DR3 6708177894848059520

HD 170069 (HR 6922) är en ensam stjärna^[14] i norra delen av stjärnbilden Kikaren. Den har en skenbar magnitud av ca 5,68^[2] och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 3 på ca 5,6 mas,^[1] beräknas den befinna sig på ett avstånd på ca 590 ljusår (ca 179 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -18 km/s.^[5] Stjärnan kallades Tau Telescopii innan Benjamin Apthorp Gould avvecklade detta namn.^[15]

Egenskaper

HD 170069 är en röd till orange jättestjärna av spektralklass K2 III.^[3] Den har en massa som är ca 4^[7] solmassor, en radie som är ca 24^[8] solradier och har ca 217 gånger solens utstrålning av energi^[9] från dess fotosfär vid en effektiv temperatur av ca 4 500 K.^[8]

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, HD 170069, 14 november 2022.

Noter

^ [a b c d e f] Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
^ [a b] Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
^ [a b] Houk, Nancy (1978). "Michigan catalogue of two-dimensional spectral types for the HD stars". Ann Arbor: Dept. Of Astronomy. Bibcode:1978mcts.book.....H.
^ Corben, P. M. (April 1971). "Photoelectric Magnitudes and Colours for Bright Southern Stars". Monthly Notes of the Astronomical Society of South Africa. 30 (4): 37. Bibcode:1971MNSSA..30...37C. ISSN 0024-8266.
^ [a b] Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. ISSN 1063-7737. S2CID 119231169.
^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. ISSN 1063-7737. S2CID 119257644.
^ [a b] Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
^ [a b c d] Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
^ [a b] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars: V. Southern stars⋆⋆⋆". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN 0004-6361.
^ HR 6922 (unistra.fr). Hämtad 2023-01-21.
^ "HR 6922". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 24 juni 2022.
^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina: brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral: con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
^ Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. eISSN 1365-2966. ISSN 0035-8711.
^ Morton Wagman (2003). Lost Stars: Lost, Missing, and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas-Louis de Lacaille, John Flamsteed, and Sundry Others (2 ed.). McDonald & Woodward Publishing Company. ISBN 978-0-939923-78-6. OCLC 1131243914.

Externa länkar

https://www.universeguide.com/star/90662/hd170069.

[A-1] [a b c d e f] Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.

[B-2] [a b] Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.

[C-3] [a b] Houk, Nancy (1978). "Michigan catalogue of two-dimensional spectral types for the HD stars". Ann Arbor: Dept. Of Astronomy. Bibcode:1978mcts.book.....H.

[D-4] Corben, P. M. (April 1971). "Photoelectric Magnitudes and Colours for Bright Southern Stars". Monthly Notes of the Astronomical Society of South Africa. 30 (4): 37. Bibcode:1971MNSSA..30...37C. ISSN 0024-8266.

[E-5] [a b] Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. ISSN 1063-7737. S2CID 119231169.

[F-6] Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. ISSN 1063-7737. S2CID 119257644.

[G-7] [a b] Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.

[H-8] [a b c d] Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (2022). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.

[I-9] [a b] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[K-10] De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars: V. Southern stars⋆⋆⋆". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN 0004-6361.

[SIMBAD-11] HR 6922 (unistra.fr). Hämtad 2023-01-21.

[L-12] "HR 6922". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 24 juni 2022.

[M-13] Gould, Benjamin Apthorp (1878). "Uranometria Argentina: brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral: con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.

[N-14] Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. eISSN 1365-2966. ISSN 0035-8711.

[O-15] Morton Wagman (2003). Lost Stars: Lost, Missing, and Troublesome Stars from the Catalogues of Johannes Bayer, Nicholas-Louis de Lacaille, John Flamsteed, and Sundry Others (2 ed.). McDonald & Woodward Publishing Company. ISBN 978-0-939923-78-6. OCLC 1131243914.

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Observationsdata Epok: J2000.0
HD 170069

Stjärnbild	Kikaren
Rektascension	18^t 29^m 55,9414 ^s^[1]
Deklination	-47° 13′ 13,9500 ″^[1]
Skenbar magnitud ( $V$ )	5,68 ± 0,01^[2]
Stjärntyp
Spektraltyp	K2 III^[3]
B–V	+1,26^[4]
Astrometri
Radialhastighet ( $R_{v}$ )	-18 ± 4,3^[5] km/s
Egenrörelse (µ)	RA: +28,685^[1] mas/år Dek.: -12,434^[1] mas/år
Parallax ( $\pi$ )	5,5748 ± 0,1894^[1]
Avstånd	590 ± 20 lå (179 ± 6 pc)
Absolut magnitud ( $M_{V}$ )	-0,78^[6]
Detaljer
Massa	4,08^[7] M_☉
Radie	23,69^[8] R_☉
Luminositet	217^[9] L_☉
Temperatur	4 490 ± 125^[8] K
Vinkelhastighet	<1^[10] km/s
Andra beteckningar
15 G. Telescopii, HD 170069, CD-47 12319, CPD-47 8894, GSC 08363-01430, HIC 90662, HIP 90662, HR 6922, IRAS 18261-4715, 2MASS J18295595-4713137, PPM 324154, SAO 229064, TYC 8363-1430-1, Gaia DR2 6708177894848059520, Gaia DR3 6708177894848059520^[11]^[12]^[13]

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