Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aries |
Right ascension | 02h 13m 03.30440s [1] |
Declination | +15° 16′ 47.5005″ [1] |
Apparent magnitude (V) | 5.70 [2] |
Characteristics | |
Spectral type | M0 III [3] |
U−B color index | +1.95 [2] |
B−V color index | +1.55 [2] |
R−I color index | 0.97 |
Variable type | Semiregular [4] |
Astrometry | |
Radial velocity (Rv) | 21.11 ± 0.26 [5] km/s |
Proper motion (μ) |
RA: +97.95
[1]
mas/
yr Dec.: -20.30 [1] mas/ yr |
Parallax (π) | 6.81 ± 0.38 mas [1] |
Distance | 480 ± 30
ly (147 ± 8 pc) |
Details | |
Radius | 39.36 [6] R☉ |
Luminosity | 301.969 [6] L☉ |
Temperature | 3838±125 [6] K |
Metallicity [Fe/H] | –0.02 ± 0.11 [7] dex |
Other designations | |
Database references | |
SIMBAD | data |
19 Arietis (abbreviated 19 Ari) is a star in the northern constellation of Aries. 19 Arietis is the Flamsteed designation. It has an apparent visual magnitude of 5.70, [2] which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 6.81 mas, [1] it is approximately 480 light-years (150 parsecs) away from Earth. At that distance, the brightness of the star is diminished by 0.21 in magnitude from extinction caused by interstellar gas and dust. [5]
This is a red giant star with a stellar classification of M0 III. [3] It is a semi-regular variable with periods of 32 and 275 days; the brightness of the star changes by an amplitude of 0.14 in magnitude during those intervals. [4] 19 Arietis has expanded to 39 times the size of the Sun, its photosphere radiates 300 times the luminosity of the Sun. [6] The effective temperature of the outer envelope is 3,838 K, [6] giving it the cool reddish glow of an M-type star. [9]
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cite web}}
: CS1 maint: postscript (
link)
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Aries |
Right ascension | 02h 13m 03.30440s [1] |
Declination | +15° 16′ 47.5005″ [1] |
Apparent magnitude (V) | 5.70 [2] |
Characteristics | |
Spectral type | M0 III [3] |
U−B color index | +1.95 [2] |
B−V color index | +1.55 [2] |
R−I color index | 0.97 |
Variable type | Semiregular [4] |
Astrometry | |
Radial velocity (Rv) | 21.11 ± 0.26 [5] km/s |
Proper motion (μ) |
RA: +97.95
[1]
mas/
yr Dec.: -20.30 [1] mas/ yr |
Parallax (π) | 6.81 ± 0.38 mas [1] |
Distance | 480 ± 30
ly (147 ± 8 pc) |
Details | |
Radius | 39.36 [6] R☉ |
Luminosity | 301.969 [6] L☉ |
Temperature | 3838±125 [6] K |
Metallicity [Fe/H] | –0.02 ± 0.11 [7] dex |
Other designations | |
Database references | |
SIMBAD | data |
19 Arietis (abbreviated 19 Ari) is a star in the northern constellation of Aries. 19 Arietis is the Flamsteed designation. It has an apparent visual magnitude of 5.70, [2] which means it is faintly visible to the naked eye. Based upon an annual parallax shift of 6.81 mas, [1] it is approximately 480 light-years (150 parsecs) away from Earth. At that distance, the brightness of the star is diminished by 0.21 in magnitude from extinction caused by interstellar gas and dust. [5]
This is a red giant star with a stellar classification of M0 III. [3] It is a semi-regular variable with periods of 32 and 275 days; the brightness of the star changes by an amplitude of 0.14 in magnitude during those intervals. [4] 19 Arietis has expanded to 39 times the size of the Sun, its photosphere radiates 300 times the luminosity of the Sun. [6] The effective temperature of the outer envelope is 3,838 K, [6] giving it the cool reddish glow of an M-type star. [9]
{{
cite web}}
: CS1 maint: postscript (
link)