Əlfərd

Əlfərd
	Ulduz
Əlfərd
Müşahidə məlumatları; (Dövr J2000.0)
Birbaşa çıxma	9s 27d 35,24s
Meyl	9s 27d 35,24s
Görünən ulduz ölçüsü (V)	1,97
Bürc	Hidra
Astrometriya
Radial sürət (Rv)	−4,561 ± 0,0001 km/san
Parallaks (π)	18,09 ± 0,18 mas
Xüsusiyyətləri
Ulduz təsnifatı	K3II/IIIBa1:
Fiziki xüsusiyyətləri
Metallığı	−0,07
Orbit elementləri
Digər təyinatlar
	GSC 05460-01592, HD 81797, HIP 46390, HR 3748, IRAS 09251-0826, SAO 136871, 2MASS J09273524-0839308, α Hya, CCDM J09277-0841A, CSV 101049, FK5 354, GC 13044, GCRV 6136, HIC 46390, IDS 09227-0814 A, IRC -10217, JP11 1813, N30 2249, NSV 4496, PLX 2247, PLX 2247.00, PMC 90-93 253, PPM 192393, RAFGL 1353, ROT 1471, SACS 209, TD1 13937, TYC 5460-1592-1, UBV 9023, WDS J09276-0840A, YZ 98 3683, WEB 8768, 30 Hya, TIC 46799297, UBV M 15411
Verilənlər bazasında məlumat
SIMBAD	* alf Hya

Əlfərd (Hidranın α-sı) — Hidra bürcündə ən parlaq ulduz. Parlaq nəhəngdir, Günəşdən 400 dəfə böyükdür.

İstinadlar

↑ ¹ ² ³ 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.
↑ Soubiran C., Jasniewicz G., Chemin L., Zurbach C., Brouillet N., Panuzzo P., Sartoretti P., Katz D., Le Campion, J. -F., Marchal O. et al. Gaia Data Release 2. The catalogue of radial velocity standard stars (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2018. Vol. 616. 8 p. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361/201832795 arXiv:1804.09370
↑ Lu P. K. Taxonomy of barium stars (ing.). // Astron. J. / J. G. III, E. Vishniac NYC: IOP Publishing, AAS, University of Chicago Press, AIP, 1991. Vol. 101. P. 2229–2254. ISSN 0004-6256; 1538-3881 doi:10.1086/115845
↑ Forsberg R., Ryde N., Jönsson H., Rich R. M., Johansen A. Abundances of disk and bulge giants from high-resolution optical spectra. V. Molybdenum: The p-process element (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2022. Vol. 666. 12 p. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361/202244013 arXiv:2206.13575
↑ Lomaeva M., Jonsson H., Ryde N., Thorsbro B., Schultheis M. Abundances of disk and bulge giants from high-resolution optical spectra (ing.): III. Sc, V, Cr, Mn, Co, Ni. // Astron. Astrophys. / T. Forveille EDP Sciences, 2019. Vol. 625. P. A141. 25 p. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361/201834247 arXiv:1903.01476

[_b523aab6d5d22b02-1] ¹ ² ³ 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.

[_63c840f3f9b95ff5-3] Soubiran C., Jasniewicz G., Chemin L., Zurbach C., Brouillet N., Panuzzo P., Sartoretti P., Katz D., Le Campion, J. -F., Marchal O. et al. Gaia Data Release 2. The catalogue of radial velocity standard stars (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2018. Vol. 616. 8 p. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361/201832795 arXiv:1804.09370

[_474ba21ee8402500-4] Lu P. K. Taxonomy of barium stars (ing.). // Astron. J. / J. G. III, E. Vishniac NYC: IOP Publishing, AAS, University of Chicago Press, AIP, 1991. Vol. 101. P. 2229–2254. ISSN 0004-6256; 1538-3881 doi:10.1086/115845

[_cb19ee9713563a8c-5] Forsberg R., Ryde N., Jönsson H., Rich R. M., Johansen A. Abundances of disk and bulge giants from high-resolution optical spectra. V. Molybdenum: The p-process element (ing.). // Astron. Astrophys. / T. Forveille EDP Sciences, 2022. Vol. 666. 12 p. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361/202244013 arXiv:2206.13575

[_14276bcb712e6cde-6] Lomaeva M., Jonsson H., Ryde N., Thorsbro B., Schultheis M. Abundances of disk and bulge giants from high-resolution optical spectra (ing.): III. Sc, V, Cr, Mn, Co, Ni. // Astron. Astrophys. / T. Forveille EDP Sciences, 2019. Vol. 625. P. A141. 25 p. ISSN 0004-6361; 0365-0138; 1432-0746; 1286-4846 doi:10.1051/0004-6361/201834247 arXiv:1903.01476

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