Upsilon Aquilae
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Upsilon Aquilae
https://en.wikipedia.org/wiki/File:Aquila_IAU.svg" rel="nofollow">
https://en.wikipedia.org/wiki/File:Cercle_rouge_100%25.svg" rel="nofollow">
Location of υ Aquilae (circled)
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Observation data
https://en.wikipedia.org/wiki/Epoch_%28astronomy%29" rel="nofollow - Epoch J2000 https://en.wikipedia.org/wiki/Equinox_%28celestial_coordinates%29" rel="nofollow - Equinox J2000 |
https://en.wikipedia.org/wiki/Constellation" rel="nofollow - Constellation |
https://en.wikipedia.org/wiki/Aquila_%28constellation%29" rel="nofollow - Aquila |
https://en.wikipedia.org/wiki/Right_ascension" rel="nofollow - Right ascension |
19h 45m 39.94763s https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa474_2_653-1" rel="nofollow - [1] |
https://en.wikipedia.org/wiki/Declination" rel="nofollow - Declination |
+07° 36′ 47.3717″ https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa474_2_653-1" rel="nofollow - [1] |
https://en.wikipedia.org/wiki/Apparent_magnitude" rel="nofollow - Apparent magnitude (V) |
+5.889 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa515_A11-2" rel="nofollow - [2] |
Characteristics |
https://en.wikipedia.org/wiki/Stellar_classification" rel="nofollow - Spectral type |
A3 IV https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aj74_375-3" rel="nofollow - [3] |
U−B https://en.wikipedia.org/wiki/Color_index" rel="nofollow - color index |
+0.09 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-clpl4_99-4" rel="nofollow - [4] |
B−V https://en.wikipedia.org/wiki/Color_index" rel="nofollow - color index |
+0.18 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-clpl4_99-4" rel="nofollow - [4] |
https://en.wikipedia.org/wiki/Astrometry" rel="nofollow - Astrometry |
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https://en.wikipedia.org/wiki/Radial_velocity" rel="nofollow - Radial velocity (Rv) |
–29.9 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-gcrv1953-5" rel="nofollow - [5] km/s |
https://en.wikipedia.org/wiki/Proper_motion" rel="nofollow - Proper motion (μ) |
RA: +54.10 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa474_2_653-1" rel="nofollow - [1] https://en.wikipedia.org/wiki/Milliarcsecond" rel="nofollow - mas / https://en.wikipedia.org/wiki/Year" rel="nofollow - yr
Dec.: +0.50 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa474_2_653-1" rel="nofollow - [1] https://en.wikipedia.org/wiki/Milliarcsecond" rel="nofollow - mas / https://en.wikipedia.org/wiki/Year" rel="nofollow - yr |
https://en.wikipedia.org/wiki/Stellar_parallax" rel="nofollow - Parallax (π) |
18.65 ± 0.41 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa474_2_653-1" rel="nofollow - [1] https://en.wikipedia.org/wiki/Milliarcsecond" rel="nofollow - mas |
https://en.wikipedia.org/wiki/Distance_%28astronomy%29" rel="nofollow - Distance |
175 ± 4 https://en.wikipedia.org/wiki/Light-year" rel="nofollow - ly
(54 ± 1 https://en.wikipedia.org/wiki/Parsec" rel="nofollow - pc ) |
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Details |
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https://en.wikipedia.org/wiki/Surface_gravity" rel="nofollow - Surface gravity (log g) |
4.21 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa515_A11-2" rel="nofollow - [2] https://en.wikipedia.org/wiki/Centimetre%E2%80%93gram%E2%80%93second_system_of_units" rel="nofollow - cgs |
https://en.wikipedia.org/wiki/Effective_temperature" rel="nofollow - Temperature |
7,906 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa515_A11-2" rel="nofollow - [2] https://en.wikipedia.org/wiki/Kelvin" rel="nofollow - K |
https://en.wikipedia.org/wiki/Metallicity" rel="nofollow - Metallicity [Fe/H] |
–0.05 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa515_A11-2" rel="nofollow - [2] https://en.wikipedia.org/wiki/Decimal_exponent" rel="nofollow - dex |
https://en.wikipedia.org/wiki/Projected_rotational_velocity" rel="nofollow - Rotational velocity (v sin i) |
42 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa463_2_671-6" rel="nofollow - [6] km/s |
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https://en.wikipedia.org/wiki/Star_catalogue" rel="nofollow - Other designations |
49 Aquilae, https://en.wikipedia.org/wiki/Durchmusterung" rel="nofollow - BD +07 4210, https://en.wikipedia.org/wiki/Henry_Draper_Catalogue" rel="nofollow - HD 186689, https://en.wikipedia.org/wiki/Hipparcos_Catalogue" rel="nofollow - HIP 97229, https://en.wikipedia.org/wiki/Bright_Star_Catalogue" rel="nofollow - HR 7519, https://en.wikipedia.org/wiki/Smithsonian_Astrophysical_Observatory_Star_Catalog" rel="nofollow - SAO 125032. https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-SIMBAD-7" rel="nofollow - [7]
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Upsilon Aquilae (υ Aql, υ Aquilae) is the https://en.wikipedia.org/wiki/Bayer_designation" rel="nofollow - Bayer designation for a https://en.wikipedia.org/wiki/Star" rel="nofollow - star in the https://en.wikipedia.org/wiki/Celestial_equator" rel="nofollow - equatorial https://en.wikipedia.org/wiki/Constellation" rel="nofollow - Constellation of https://en.wikipedia.org/wiki/Aquila_%28constellation%29" rel="nofollow - Aquila . With an https://en.wikipedia.org/wiki/Apparent_visual_magnitude" rel="nofollow - apparent visual magnitude of +5.91 https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-clpl4_99-4" rel="nofollow - [4] it is a faint star but https://en.wikipedia.org/wiki/Bortle_Dark-Sky_Scale" rel="nofollow - visible to the naked eye from suburban skies. It has an annual https://en.wikipedia.org/wiki/Parallax" rel="nofollow - parallax shift of 18.65 https://en.wikipedia.org/wiki/Milliarcsecond" rel="nofollow - milliarcsecond , https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa474_2_653-1" rel="nofollow - [1] indicating a distance of around 175 https://en.wikipedia.org/wiki/Light-year" rel="nofollow - light-years (54 https://en.wikipedia.org/wiki/Parsec" rel="nofollow - parsecs ).
Upsilon Aquilae is a https://en.wikipedia.org/wiki/Subgiant_star" rel="nofollow - subgiant star with a https://en.wikipedia.org/wiki/Stellar_classification" rel="nofollow - stellar classification of A3 IV. https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aj74_375-3" rel="nofollow - [3] The https://en.wikipedia.org/wiki/Stellar_atmosphere" rel="nofollow - outer atmosphere is radiating energy into space at an https://en.wikipedia.org/wiki/Effective_temperature" rel="nofollow - effective temperature of 7,906 K, https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa515_A11-2" rel="nofollow - [2] which gives it the white-hot glow of an https://en.wikipedia.org/wiki/A-type_star" rel="nofollow - A-type star . It is spinning relatively quickly with a https://en.wikipedia.org/wiki/Projected_rotational_velocity" rel="nofollow - projected rotational velocity of 42 km/s. https://en.wikipedia.org/wiki/Upsilon_Aquilae#cite_note-aaa463_2_671-6" rel="nofollow - [6]
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A shot of me as High Priestess of Gaia during our fall festival. Ceterum censeo principiis obsta
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