  | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 23h 31m 17.41325s[1] |
| Declination | +39° 14′ 10.3147″[1] |
| Apparent magnitude (V) | 5.22[2] |
| Characteristics | |
| Evolutionary stage | Horizontal branch[3] |
| Spectral type | K0 III[4] |
| B−Vcolor index | 1.029±0.003[2] |
| Variable type | None[5] |
| Astrometry | |
| Radial velocity (Rv) | −59.81±0.12[1] km/s |
| Proper motion (μ) | RA: +286.898mas/yr[1] Dec.: −84.043mas/yr[1] |
| Parallax (π) | 13.1681±0.0727 mas[1] |
| Distance | 248 ± 1 ly (75.9 ± 0.4 pc) |
| Absolute magnitude (MV) | 0.73[2] |
| Details | |
| Mass | 0.898±0.069,[6]1.4±0.2[7] M☉ |
| Radius | 12.67±0.39[6] R☉ |
| Luminosity | 58.18±2.55[6] L☉ |
| Surface gravity (log g) | 2.60±0.01[8] cgs |
| Temperature | 4,483±50[6] K |
| Metallicity[Fe/H] | −0.30±0.04[8] dex |
| Rotational velocity (v sin i) | 1.63±0.47[8] km/s |
| Age | 3.2±2.1,[7]13.19±2.04[6] Gyr |
| Other designations | |
| Veritate,14 And,NSV 14599,BD+38°5023,GC 32703,HD 221345,HIP 116076,HR 8930,SAO 73311,PPM 88889,2MASS J23311742+3914102[9] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
14 Andromedae, abbreviated14 And, also namedVeritate/ˌvɛrɪˈteɪtiː/,[10] is a single,[11] orange-huedgiant star situated 248light-years away[1] in the northernconstellation ofAndromeda. It is dimly visible to the naked eye with anapparent visual magnitude of 5.22.[2] The star is moving closer to the Earth with a heliocentricradial velocity of −60 km/s.[2] In 2008 anextrasolar planet (designated14 Andromedae b, later namedSpe) was discovered to be orbiting the star.[4]
This is ared clump[3] giant with astellar classification of K0 III,[4] a star that has past thefirst-giant branch and is now on thehorizontal branch, generating energy throughhelium fusion at itscore. The star has expanded to 12.7 times theSun's radius and is radiating 58 times theSun's luminosity from its enlargedphotosphere at aneffective temperature of 4,483 K.[6] Its exact mass and age are still uncertain.[6]
14 Andromedae is the star'sFlamsteed designation. Following its discovery the planet was designated 14 Andromedae b.
In July 2014 theInternational Astronomical Union launchedNameExoWorlds, a process for giving proper names to certain exoplanets and their host stars.[12] The process involved public nomination and voting for the new names.[13] In December 2015, the IAU announced the winning names were Veritate for this star and Spe for its planet.[14]
The winning names were based on those submitted by theThunder Bay Centre of theRoyal Astronomical Society of Canada[15]); namely 'Veritas' and 'Spes',Latin for 'truth' and 'hope', respectively. (Veritas was also theRoman goddess of truth and Spes was theRoman goddess of hope.) The IAU substituted theablative forms 'Veritate' and 'Spe', which mean 'where there is truth' and 'where there is hope', respectively. This was because 'Veritas' is thename of an asteroid important for the study of theSolar System.[16]
In 2016, the IAU organized aWorking Group on Star Names (WGSN)[17] to catalog and standardize proper names for stars. In its first bulletin of July 2016,[18] the WGSN explicitly recognized the names of exoplanets and their host stars approved by the Executive Committee Working Group Public Naming of Planets and Planetary Satellites, including the names of stars adopted during the 2015 NameExoWorlds campaign. This star is now so entered in the IAU Catalog of Star Names.[10]
In 2008, anexoplanet was announced to be orbiting the star, detected by theradial velocity method. The planet was found to have aminimum mass of 4.8Jupiter masses and to be orbiting in a circular orbit that takes 186days to complete. The planet is one of the few known planets to be orbiting an evolved intermediate-mass star and one of the closest-orbiting (such planets have only been discovered aroundclump giants).[4]
A 2023 study of planets around evolved stars, while presenting updated parameters for this planet, found that the radial velocity variations are correlated with stellar activity signals, casting doubt on the planet's existence.[19] Based on this, a 2024 study listed it as one of several doubtful planets around giant stars (along with other named planets around41 Lyncis and42 Draconis).[20]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b (Spe)(disputed) | ≥3.559+0.114 −0.122MJ | 0.775 | 186.76+0.11 −0.12 | 0 | — | — |
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