Əlfəqqə

Əlfəqqə
Əlfəqqə
	Ulduz
Müşahidə məlumatları; (Dövr J2000.0)
Birbaşa çıxma	15s 34d 41,27s
Meyl	+26° 42′ 52,89″
Məsafə	74,7 işıq ili
Görünən ulduz ölçüsü (V)	2,24
Bürc	Şimal Tacı
Astrometriya
Radial sürəti (Rv)	1,4 ± 1,78 km/san
	Fərdi hərəkət
• Birbaşa çıxma	120,27 ± 0,19 mas/il
• Meyl	−89,58 ± 0,2 mas/il
Parallaks (π)	43,46 ± 0,28 mas
Spektral xüsusiyyətləri
Ulduz təsnifatı	A1IV
	Rəng indeksi
• B−V	−0,02
• U−B	−0,03
Fiziki xüsusiyyətləri
Kütləsi	2,58 M☉
Temperaturu	10.900 K
Metallığı	0,2
Fırlanma	138 km/san
Orbit elementləri
Digər təyinatlar
	GSC 02029-01690, HD 139006, HIP 76267, HR 5793, IRAS 15325+2652, SAO 83893, 2MASS J15344125+2642529, GJ 9524, α CrB, 1RXS J153441.5+264252, ASCC 690485, BD+27 2512, EUVE J1534+26.7, FK5 578, GC 20947, GCRV 8990, HIC 76267, IRC +30275, JP11 2622, LSPM J1534+2642, N30 3502, PLX 3519, PLX 3519.00, PMC 90-93 410, PPM 104146, ROT 2204, SRS 30578, TD1 18384, TYC 2029-1690-1, UBV 21417, alf CrB, uvby98 100139006, SBC9 850, HGAM 637, SBC7 545, [ZEH2003] RX J1534.6+2642 1, RX J1534.6+2642, WEB 12948, 5 CrB, Gaia DR3 1222646935698492160, TIC 274945059, AG+26 1496, UBV M 20847
Verilənlər bazasında məlumat
SIMBAD	* alf CrB

Əlfəqqə (Gemma, Şimal Tacının α-sı) — Şimal Tacı bürcündə ən parlaq ulduz. Yerdən məsafəsi 75 işıq ili, yaxud 22,9 parsekdir.

İstinadlar

↑ ¹ ² ³ ⁴ ⁵ Leeuwen F. v. Validation of the new Hipparcos reduction (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2007. Vol. 474, Iss. 2. P. 653–664. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361:20078357 arXiv:0708.1752
↑ Ducati J. R. Catalogue of Stellar Photometry in Johnson's 11-color system (ing.). // (untranslated) VizieR, 2002. Vol. 2237.
↑ N.V. Kharchenko, R.-D. Scholz, A.E. Piskunov, Röser S., Schilbach E. Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations (ing.). // Astron. Nachr. Wiley, 2007. Vol. 328, Iss. 9. P. 889–896. ISSN 0004-6337; 1521-3994 doi:10.1002/ASNA.200710776 arXiv:0705.0878
↑ Gray R. O., Corbally C. J., Garrison R. F., McFadden M. T., Robinson P. E. Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I (ing.). // Astron. J. / J. G. III, E. Vishniac NYC: IOP Publishing, AAS, University of Chicago Press, AIP, 2003. Vol. 126, Iss. 4. P. 2048–2059. ISSN 0004-6256; 1538-3881 doi:10.1086/378365 arXiv:astro-ph/0308182
↑ ¹ ² Gebran M., Farah W., Paletou F., Monier R., Watson V. A new method for the inversion of atmospheric parameters of A/Am stars (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2016. Vol. 589. 10 p. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361/201528052 arXiv:1603.01146
↑ Royer F., Grenier S., Baylac, M. -O., Gómez A. E., Zorec J. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2002. Vol. 393, Iss. 3. P. 897–911. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361:20020943 arXiv:astro-ph/0205255
↑ Royer F., Zorec J., Gómez A. E. Rotational velocities of A-type stars. III. Velocity distributions (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2007. Vol. 463, Iss. 2. P. 671–682. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361:20065224 arXiv:astro-ph/0610785

[_b523aab6d5d22b02-1] ¹ ² ³ ⁴ ⁵ Leeuwen F. v. Validation of the new Hipparcos reduction (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2007. Vol. 474, Iss. 2. P. 653–664. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361:20078357 arXiv:0708.1752

[_02917350919941e1-2] Ducati J. R. Catalogue of Stellar Photometry in Johnson's 11-color system (ing.). // (untranslated) VizieR, 2002. Vol. 2237.

[_fc9dc59b41f3bd67-3] N.V. Kharchenko, R.-D. Scholz, A.E. Piskunov, Röser S., Schilbach E. Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations (ing.). // Astron. Nachr. Wiley, 2007. Vol. 328, Iss. 9. P. 889–896. ISSN 0004-6337; 1521-3994 doi:10.1002/ASNA.200710776 arXiv:0705.0878

[_0998f5f0080da048-4] Gray R. O., Corbally C. J., Garrison R. F., McFadden M. T., Robinson P. E. Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I (ing.). // Astron. J. / J. G. III, E. Vishniac NYC: IOP Publishing, AAS, University of Chicago Press, AIP, 2003. Vol. 126, Iss. 4. P. 2048–2059. ISSN 0004-6256; 1538-3881 doi:10.1086/378365 arXiv:astro-ph/0308182

[_6a26fc0142911b8f-5] ¹ ² Gebran M., Farah W., Paletou F., Monier R., Watson V. A new method for the inversion of atmospheric parameters of A/Am stars (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2016. Vol. 589. 10 p. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361/201528052 arXiv:1603.01146

[_24ffbb80dd994c91-6] Royer F., Grenier S., Baylac, M. -O., Gómez A. E., Zorec J. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2002. Vol. 393, Iss. 3. P. 897–911. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361:20020943 arXiv:astro-ph/0205255

[_3fe640ab33e52859-7] Royer F., Zorec J., Gómez A. E. Rotational velocities of A-type stars. III. Velocity distributions (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2007. Vol. 463, Iss. 2. P. 671–682. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361:20065224 arXiv:astro-ph/0610785

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