HR 5553
Cet article est une ébauche concernant une étoile.
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HR 5553
Courbe de lumière d'HR 5553[1].
| Ascension droite | 14h 53m 23,766 74s[2] |
|---|---|
| Déclinaison | +19° 09′ 10,081 3″[2] |
| Constellation | Bouvier |
| Magnitude apparente | 6,00[3] (5,97 à 6,04)[4] |
Localisation dans la constellation : Bouvier   | |
| Type spectral | K0 V[5] |
|---|---|
| Indice U-B | +0,49[5] |
| Indice B-V | +0,84[5] |
| Variabilité | RS Canum Venaticorum[4] |
| Vitesse radiale | −29,82 ± 0,15 km/s[6] |
|---|---|
| Mouvement propre |
μα = −442,23 mas/a[2] μδ = +217,61 mas/a[2] |
| Parallaxe | 86,88 ± 0,46 mas[2] |
| Distance |
37,5 ± 0,2 al (11,51 ± 0,06 pc) |
| Magnitude absolue | 5,69[7] |
| Masse | 0,84 M☉[8] / 0,45 M☉[5] |
|---|---|
| Rayon | 0,86 R☉[8] |
| Gravité de surface (log g) | 4,57[9] |
| Luminosité | 0,498 L☉[8] |
| Température | 5 313 K[9] |
| Métallicité | 0,10[9] |
| Rotation | 4,0 km/s[9] |
| Âge | 0,7 à 1,3 Ga[10] |
| Demi-grand axe (a) | 0,19 ± 0,03 UA[11] |
|---|---|
| Excentricité (e) | 0,51 ± 0,001[11] |
| Période (P) | 125,396 ± 0,001 j[11] |
| Inclinaison (i) | 93,4 ± 4,2°[11] |
| Argument du périastre (ω) | 219 ± 0,1°[11] |
| Longitude du nœud ascendant (Ω) | 248,3 ± 3,6°[11] |
Désignations
HR 5553 est une étoile variable binaire de la constellation du Bouvier, située à 37,5 ± 0,2 a.l. (∼ 11,5 pc) de la Terre.
Références
- (en) Cet article est partiellement ou en totalité issu de l’article de Wikipédia en anglais intitulé « HR 5553 » (voir la liste des auteurs).
- ↑ (en) Gregory W. Henry, Francis C. Fekel et Douglas S. Hall, « An Automated Search for Variability in Chromospherically Active Stars », The Astronomical Journal, vol. 110, no 6, , p. 2926–2967 (DOI 10.1086/117740, Bibcode 1995AJ....110.2926H)
- (en) Floor van Leeuwen, « Validation of the new Hipparcos reduction », Astronomy & Astrophysics, vol. 474, no 2, , p. 653–664 (DOI 10.1051/0004-6361:20078357, Bibcode 2007A&A...474..653V, arXiv 0708.1752v1, S2CID 18759600)
- ↑ (en) J.-C. Mermilliod, « Compilation of Eggen's UBV data, transformed to UBV (unpublished) », Catalogue of Eggen's UBV Data. SIMBAD, (Bibcode 1986EgUBV........0M)
- (en) N. N. Samus', E. V. Kazarovets, O. V. Durlevich, N. N. Kireeva et E. N. Pastukhova, « General catalogue of variable stars: Version GCVS 5.1 », Astronomy Reports, vol. 61, no 1, , p. 80 (DOI 10.1134/S1063772917010085, Bibcode 2017ARep...61...80S, S2CID 125853869)
- (en) Grant M. Kennedy, « Nature or nurture of coplanar Tatooines: the aligned circumbinary Kuiper belt analogue around HD 131511 », Monthly Notices of the Royal Astronomical Society, vol. 447, no 1, , L75–L79 (DOI 10.1093/mnrasl/slu190, Bibcode 2015MNRAS.447L..75K, arXiv 1412.0674, S2CID 53686506)
- ↑ (en) Yüksel Karataș, Selçuk Bilir, Zeki Eker, Osman Demircan, James Liebert, Suzanne L. Hawley, Oliver J. Fraser, Kevin R. Covey, Patrick Lowrance, J. Davy Kirkpatrick et Adam J. Burgasser, « Kinematics of chromospherically active binaries and evidence of an orbital period decrease in binary evolution », Monthly Notices of the Royal Astronomical Society, vol. 349, no 3, , p. 1069–1092 (DOI 10.1111/j.1365-2966.2004.07588.x, Bibcode 2004MNRAS.349.1069K, arXiv astro-ph/0404219, S2CID 15290475)
- ↑ (en) J. Holmberg et al., « The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics », Astronomy & Astrophysics, vol. 501, no 3, , p. 941–947 (DOI 10.1051/0004-6361/200811191, Bibcode 2009A&A...501..941H, arXiv 0811.3982, S2CID 118577511)
- (en) J. P. Marshall et al., « Interpreting the extended emission around three nearby debris disc host stars », Astronomy & Astrophysics, vol. 570, , p. 13, article no A114 (DOI 10.1051/0004-6361/201424517, Bibcode 2014A&A...570A.114M, arXiv 1408.5649, S2CID 119232172)
- (en) C. Eiroa et al., « DUst around NEarby Stars. The survey observational results », Astronomy & Astrophysics, vol. 555, , article no A11 (DOI 10.1051/0004-6361/201321050, Bibcode 2013A&A...555A..11E, arXiv 1305.0155, S2CID 377244)
- ↑ (en) Eric E. Mamajek et Lynne A. Hillenbrand, « Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics », The Astronomical Journal, vol. 687, no 2, , p. 1264–1293 (DOI 10.1086/591785, Bibcode 2008ApJ...687.1264M, arXiv 0807.1686, S2CID 27151456)
- (en) G. M. Kennedy, « Nature or nurture of coplanar Tatooines: the aligned circumbinary Kuiper Belt analogue around HD 131511 », Monthly Notices of the Royal Astronomical Society, vol. 447, no 1, , L75–L79 (DOI 10.1093/mnrasl/slu190, Bibcode 2015MNRAS.447L..75K, arXiv 1412.0674)
- ↑ (en) DE Boo sur la base de données Simbad du Centre de données astronomiques de Strasbourg.
Liens externes
- Ressource relative à l'astronomie :
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