HD 224693 information

HD 224693 / Axólotl
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Cetus
Right ascension	23h 59m 53.8316s
Declination	−22° 25′ 41.2159″
Apparent magnitude (V)	8.23
Characteristics
Spectral type	G2V or G2IV
B−V color index	0.639±0.015
Variable type	constant
Astrometry
Radial velocity (Rv)	1.49±0.14 km/s
Proper motion (μ)	RA: 147.125±0.100 mas/yr ; Dec.: 26.853±0.058 mas/yr
Parallax (π)	10.6666 ± 0.0577 mas
Distance	306 ± 2 ly ; (93.8 ± 0.5 pc)
Absolute magnitude (MV)	3.29
Details
Mass	1.29±0.09 M☉
Radius	1.82+0.05; −0.04 R☉
Luminosity	3.78±0.03 L☉
Surface gravity (log g)	4.18±0.06 cgs
Temperature	5,971+55; −88 K
Metallicity [Fe/H]	0.28±0.02 dex
Rotational velocity (v sin i)	4.2 km/s
Age	3.0 Gyr
Other designations
	Axólotl, CD−23°18108, HD 224693, HIP 118319, SAO 192301
Database references
SIMBAD	data

HD 224693, also named Axólotl, is a star in the equatorial constellation of Cetus, and is positioned near the western constellation border with Aquarius. It can be viewed with a small telescope but is too faint to be seen with the naked eye, having an apparent visual magnitude of 8.23.^[2] Based on parallax measurements, the object is located at a distance of approximately 306 light years from the Sun. It is drifting further away with a radial velocity of 1.5 km/s.^[1]

The star HD 224693 is named Axólotl. The name was selected in the NameExoWorlds campaign by Mexico, during the 100th anniversary of the IAU. "Axólotl" means "water animal" in the native Nahuatl language and an axolotl is also a species of salamander endemic to the valley of Mexico.^[7]^[8]

This is an ordinary G-type main-sequence star with a stellar classification of G2V.^[3] However, in 2006, Johnson and associates assigned it a class of G2 IV, suggesting it is instead an evolving subgiant star.^[4] It is about three^[6] billion years old and chromospherically quiet,^[4] with a projected rotational velocity of 4.2 km/s.^[6] The star is metal rich, showing a higher abundance of elements other than hydrogen and helium when compared to the Sun.^[4] It has 1.3^[5] times the mass of the Sun and 1.8 times the Sun's radius. The star is radiating 3.78 times the luminosity of the Sun from its photosphere at an effective temperature of 5,971 K.^[1]

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e Cite error: The named reference Johnson2006 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference Santos2013 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d Cite error: The named reference Delgado_Mena2015 was invoked but never defined (see the help page).
^ "Approved names". www.nameexoworlds.iau.org. Retrieved 2020-01-02.
^ "100 000s of People from 112 Countries Select Names for Exoplanet Systems In Celebration of IAU's 100th Anniversary". International Astronomical Union. December 17, 2019. Retrieved 2020-01-02.

[Gaia_DR2-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).

[Anderson2012-2] Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).

[houk1978-3] Cite error: The named reference houk1978 was invoked but never defined (see the help page).

[Johnson2006-4] Cite error: The named reference Johnson2006 was invoked but never defined (see the help page).

[Santos2013-5] Cite error: The named reference Santos2013 was invoked but never defined (see the help page).

[Delgado_Mena2015-6] Cite error: The named reference Delgado_Mena2015 was invoked but never defined (see the help page).

[7] "Approved names". www.nameexoworlds.iau.org. Retrieved 2020-01-02.

[8] "100 000s of People from 112 Countries Select Names for Exoplanet Systems In Celebration of IAU's 100th Anniversary". International Astronomical Union. December 17, 2019. Retrieved 2020-01-02.

Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Cetus
Right ascension	23^h 59^m 53.8316^s^[1]
Declination	−22° 25′ 41.2159″^[1]
Apparent magnitude (V)	8.23^[2]
Characteristics
Spectral type	G2V^[3] or G2IV^[4]
B−V color index	0.639±0.015^[2]
Variable type	constant^[4]
Astrometry

Radial velocity (R_v)	1.49±0.14^[1] km/s
Proper motion (μ)	RA: 147.125±0.100^[1] mas/yr Dec.: 26.853±0.058^[1] mas/yr
Parallax (π)	10.6666 ± 0.0577 mas^[1]
Distance	306 ± 2 ly (93.8 ± 0.5 pc)
Absolute magnitude (M_V)	3.29^[2]

Details

Mass	1.29±0.09^[5] `M`_☉
Radius	1.82+0.05 −0.04^[1] `R`_☉
Luminosity	3.78±0.03^[1] `L`_☉
Surface gravity (log g)	4.18±0.06^[5] cgs
Temperature	5,971+55 −88^[1] K
Metallicity [Fe/H]	0.28±0.02^[5] dex
Rotational velocity (v sin i)	4.2^[6] km/s
Age	3.0^[6] Gyr

Other designations
Axólotl, CD−23°18108, HD 224693, HIP 118319, SAO 192301
Database references
SIMBAD	data

HD 224693 information

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