Delta Pavonis

Star in the constellation Pavo

Delta Pavonis

Location of δ Pavonis (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Pavo
Right ascension	20h 08m 43.60887s[1]
Declination	−66° 10′ 55.4428″[1]
Apparent magnitude (V)	3.56[2]
Characteristics
Spectral type	G8 IV[3]
U−B color index	0.45[2]
B−V color index	0.76[2]
Variable type	Suspected[4]
Distance		19.89 ± 0.01 ly (6.099 ± 0.005 pc)
Absolute magnitude (MV)	4.62[6]
Details Gyr
LTT 7946, 2MASS J20084376-6610563[11]
Database references
SIMBAD	data

Delta Pavonis,

Spectroscopic examination of Delta Pavonis shows that it has a higher abundance of elements heavier than helium (metallicity) than does the Sun. This value is typically given in terms of the ratio of iron (chemical symbol Fe) to hydrogen (H) in a star's atmosphere, relative to that in Sol's atmosphere (iron being a good proxy for the presence of other heavy elements). The metallicity of Delta Pavonis is approximately

${\displaystyle {\begin{smallmatrix}\left[{\frac {Fe}{H}}\right]\ =\ 0.33\end{smallmatrix}}}$

This notation gives the logarithm of the iron-to-hydrogen ratio, relative to that of the Sun, meaning that Delta Pavonis's iron abundance is 214% of that of Sol. It is considered super metal-rich, and the high metallicity has slowed its evolution.^[14] Studies have shown a correlation between abundant heavy elements in stars, and the presence of a planetary system,^[15] so Delta Pavonis has a greater than average probability of harboring planets.^[14]

The age of Delta Pavonis is approximately 6.6 to 6.9 billion years,

The existence of a Jupiter-mass gas giant on a long-period orbit around Delta Pavonis is suspected, as of 2021, based on astrometric data.^[16] A study in 2023 detected a trend in the star's radial velocity, which may indicate the presence of a planetary companion, supporting the previous astrometric result. Such a planet would, at minimum, orbit with a period of 37 years at a distance of 11.1 AU, and have a mass at least 69 M_🜨 (0.22 M_J).^[9]

SETI

Delta Pavonis has been identified by Maggie Turnbull and