astro.wikisort.org - StarEpsilon Scuti, Latinized from ε Scuti, is a probable astrometric binary
[10] star system in the constellation Scutum. It is faintly visible to the naked eye with an apparent visual magnitude of +4.88.[2] Based upon an annual parallax shift of 6.06 mas as seen from Earth,[7] it is located approximately 540 light years from the Sun. It is moving closer to the Sun with a radial velocity of −9.8 km/s.[6]
Epsilon Scuti was a latter designation of 3 Aquilae.[11]
Star in the constellation Scutum
ε Scuti
Location of ε Scuti (circled) |
Observation data Epoch J2000 Equinox J2000 |
Constellation |
Scutum |
Right ascension |
18h 43m 31.252s[1] |
Declination |
−8° 16′ 30.80″[1] |
Apparent magnitude (V) |
4.88[2] |
Characteristics |
Spectral type |
G8IIb[3] |
U−B color index |
+0.88[4] |
B−V color index |
+1.12[5] |
Astrometry |
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|
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Radial velocity (Rv) | −9.8±0.6[6] km/s |
Proper motion (μ) | RA: +21.06[7] mas/yr Dec.: +9.11[7] mas/yr |
Parallax (π) | 6.06 ± 0.64 mas[7] |
Distance | approx. 540 ly (approx. 170 pc) |
Absolute magnitude (MV) | -1.18[2] |
|
Details |
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|
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Luminosity | 403[2] L☉ |
Surface gravity (log g) | 1.00[8] cgs |
Temperature | 4,500[8] K |
Metallicity [Fe/H] | +0.05[2] dex |
Rotational velocity (v sin i) | 5.1[9] km/s |
|
Other designations |
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ε Sct, BD−08° 4686, FK5 702, GC 25610, HD 173009, HIP 91845, HR 7032, SAO 142546, ADS 11601, CCDM J18435-0817A, WDS J18435-0817A, GSC 05692-02504 |
Database references |
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SIMBAD | data |
The visible component is a yellow-hued bright giant with a G-type bright giant[3] It is radiating 403[2] times the Sun's luminosity from its photosphere at an effective temperature of 4,500 K.[8] Epsilon Scuti has at least three faint visual companions, two 14th magnitude stars, B and D, separated from the primary by 13.6 and 15.4 arcseconds respectively, and the 13th magnitude C, which is 38 arcseconds away.[12]
References
- Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H.
- Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644. Vizier catalog entry
- Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". The Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
- Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally Published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M.Vizier catalog entry
- Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42 (2): 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry
- Gontcharov, G. A. (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. S2CID 119231169.
- Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
- Soubiran, Caroline; Le Campion, Jean-François; Brouillet, Nathalie; Chemin, Laurent (2016). "The PASTEL catalogue: 2016 version". Astronomy & Astrophysics. 591: A118. arXiv:1605.07384. Bibcode:2016A&A...591A.118S. doi:10.1051/0004-6361/201628497. S2CID 119258214.
- De Medeiros, J. R.; Mayor, M. (1999). "A catalog of rotational and radial velocities for evolved stars". Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph/0608248. Bibcode:1999A&AS..139..433D. doi:10.1051/aas:1999401. Vizier catalog entry
- Eggleton, P. P.; Tokovinin, A. A. (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, S2CID 14878976.
- Wagman, M. (August 1987). "Flamsteed's Missing Stars". Journal for the History of Astronomy. 18 (3): 212. Bibcode:1987JHA....18..209W. doi:10.1177/002182868701800305. S2CID 118445625.
- Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. Vizier catalog entry
Constellation of Scutum |
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Stars | Bayer | |
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Variable |
- R
- S
- X
- RS
- RU
- RY
- RZ
- SS
- TY
- UY
- BX
- CM
- EU
- EV
- EW
- FR
- V367
- V368
- V373
- V430
- V432
- V443
- V447
- V450
- V452
- V455
- V475
- V476
- V479
- V496
|
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HR |
- 6878
- 6881
- 6892
- 6940
- 6946
- 6956
- 6962
- 6963
- 6970
- 6989
- 7007
- 7014
- 7024
- 7034
- 7055
- 7083
- 7094
- 7110
- 7119
|
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HD | |
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Other | |
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Star clusters | |
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 Category |
На других языках
- [en] Epsilon Scuti
[ru] Эпсилон Щита
ε Щита (лат. ε Scuti / ε Sct) − кратная система, состоящая из четырёх звёзд. Находится в созвездии Щита на расстоянии приблизительно 523 световых лет от нас. Главный компонент, ε Щита А, — жёлтый яркий гигант класса G.
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