HD 23079

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
HD 23079
HD 23079 c	5.75 d	> 8.26 M_⨁	Radial Velocity	2025	Delisle et al. 2025	Confirmed Planet
HD 23079 b	735.74 d	> 845.42 M_⨁	Radial Velocity	2001	Tinney et al. 2002	Confirmed Planet

Exoplanet Archive Notes (1)

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HD 23079

Stellar mass selected from evolutionary track mass (M_track) in Table 4 (Ghezzi et al. 2010)

HD 23079 Stellar Parameters (18 Solutions)

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RA: 03h39m42.77s

Dec: -52d54m58.44s

Distance: 33.4591+0.0349-0.0348
pc

Parallax: 29.8583000±0.0309075 mas

Ecliptic Latitude: -68.16038 deg

Ecliptic Longitude: 21.34837 deg

Galactic Latitude: -49.6531 deg

Galactic Longitude: 264.32032 deg

Total Proper Motion: 213.7394128±0.0601784 mas/yr

Proper Motion (RA): -192.8770000±0.0598019 mas/yr

Proper Motion (Dec): -92.1032000±0.0618022 mas/yr

Photometry: m_V
7.12±0.03; m_TESS
6.5652±0.0060; m_J
6.030±0.018; m_H
5.814±0.018; m_Ks
5.705±0.020; m_W1
8.163±0.113; m_W2
8.349±0.070; m_W3
9.7630±0.2820; m_W4
6.255±0.079; m_Gaia
6.962350±0.000293; m_B
7.634±0.034

Abundances (Hypatia Catalog): [Fe/H] -0.10±0.39 dex; [C/H] -0.04±0.20 dex; [O/H] -0.13±0.24 dex; [Na/H] -0.13±0.07 dex; [Mg/H] -0.04±0.12 dex; [Al/H] -0.15±0.13 dex; [Si/H] -0.10±0.12 dex; [Ca/H] -0.03±0.08 dex; [Y/H] 0.09±0.08 dex; [BaII/H] -0.01±0.11 dex

Tools: Planetary Systems; ExoFOP Target Overview Page; IRSA Finding Chart; Stellar Hosts

Source	Delisle et al. 2025	TICv8	Gaia DR2	Stassun et al. 2017	Suárez-Andrés et al. 2016	Tsantaki et al. 2014	Ghezzi et al. 2010	Sousa et al. 2008	Butler et al. 2006	Gray et al. 2006	Valenti & Fischer 2005	Nordstrom et al. 2004	Santos et al. 2004	Santos et al. 2003	Tinney et al. 2002	Henry et al. 1996	Michigan Catalog, Vol. 1	Cannon & Pickering 1918
S Index	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	0.164	---	---
CAII LOG RHK	-4.929±0.014	---	---	---	---	---	---	---	---	---	---	---	---	---	---	-4.94	---	---
T_eff (K)	5994+55-64	5984.060+168.583-104.634	5964.2500+43.0835-12.5835	5974±10	6009	5965±18	6017±38	5980±12	5927±44	---	---	---	5959±46	5945	---	---	---	---
Metallicity (dex)	-0.129±0.041 [Fe/H]	-0.1174440±0.0067619 [M/H]	---	-0.13 [Fe/H]	-0.16±0.10 [N/H]	-0.13±0.03 [Fe/H]	-0.12±0.03 [Fe/H]	-0.12±0.01 [Fe/H]	-0.150±0.030 [Fe/H]	---	---	---	-0.11±0.06 [Fe/H]	-0.11 [Fe/H]	0.0 [Fe/H]	---	---	---
M_✶ (M_⦿)	1.16+0.02-0.03	1.100000+0.159854-0.123680	---	1.12±0.06	---	---	1.05±0.10	1.009	1.01	---	---	---	1.01	1.00	1.10±0.15	---	---	---
log g (log₁₀(cm/s²))	4.37±0.02	4.4108500+0.0756830-0.0878566	---	4.43±0.02	4.5	4.28±0.06	4.52±0.08	4.48±0.02	4.337±0.060	---	---	---	4.35±0.12	4.44	---	---	---	---
v sin i (km/s)	---	---	---	---	---	0.10	---	---	2.990±0.500	---	3.0±0.5	4	---	---	---	---	---	---
L_✶ (log₁₀(L_⦿))	0.130+0.025-0.027	0.13128849+0.01494860-0.01042683	0.13265374+0.00072228-0.00072348	---	---	---	0.0920±0.0610	0.1392+0.0053-0.0054	---	---	---	---	---	---	---	---	---	---
γ (km/s)	0.573801±0.000319	---	0.6170527378492947±0.1770454160437256	---	---	---	---	---	---	---	0.2	0.5±0.2	---	---	---	---	---	---
R_✶ (R_⦿)	1.08+0.02-0.03	1.0821900+0.0568980-0.0549864	1.0911082+0.0046188-0.0155942	1.07±0.01	---	---	1.03±0.08	---	---	---	---	---	---	---	---	---	---	---
Age (Gyr)	2.6±1.2	---	---	---	---	---	2.0+3.0-2.0	---	---	---	---	---	---	---	---	---	---	---
Sp. T	F9.5 V	---	---	---	---	---	---	---	---	F9.5 V	---	---	---	---	---	---	F8/G0 V	G0
ρ_✶ (g/cm³)	---	1.2236108+0.2922951-0.2542974	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---
P_rot (days)	15.0±2.6	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---

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HD 23079 c Planetary Parameters (1 Solution)

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Status: Confirmed Planet

Detected By: Radial Velocity

Tools: Planetary Systems

Source	Delisle et al. 2025
ω (deg)	283.4±47.2
M_p sin i (M_⨁)	8.26±0.79
M_p sin i (M_Jup)	0.0260±0.0025
e	0.0970±0.1240
P (days)	5.748913±0.000204
K (m/s)	2.702±0.252

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HD 23079 b Planetary Parameters (4 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity

Tools: Planetary Systems

Source	Delisle et al. 2025	Stassun et al. 2017	Butler et al. 2006	Tinney et al. 2002
ω (deg)	33.20±4.92	---	55±17	262±50
M_p sin i (M_⨁)	845±16	830±35	778.7±66.7	794.5±95.3
M_p sin i (M_Jup)	2.66±0.05	2.61±0.11	2.45±0.21	2.5±0.3
e	0.07348±0.00651	0.10±0.03	0.102±0.031	0.02±0.12
P (days)	735.740±0.220	730.59998±5.70000	730.6±5.7	626±24
K (m/s)	54.386±0.248	54.9±1.1	54.9±1.1	56±5
T_p (days)	---	---	2450492±37	2451680±90
a (au)	---	1.60±0.03	1.596±0.093	1.5±0.2

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Ancillary Information (3 Unique Files)

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+ HD 23079 (2 File Types, 3 Files)

Literature Time Series (2 File Types, 3 Files)

File Type	Data Points	Filter	Reference
Photometric Light Curve	121	Hp (Hipparcos)	Hipparcos and Tycho Catalogs
Radial Velocity Curve	19	Optical Spectra	Butler et al. 2006
Radial Velocity Curve	14	Optical Spectra	Tinney et al. 2002

Nearby Data (within 30 arcseconds) Browse Nearby Data

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Known Objects: 2 Confirmed Planets; 4 2MASS Point Source Catalog

Data Files: 2 Associated Literature Data

Bibliography (23 References)

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Architecture of planetary systems with and without outer giant planets: I. Inner planet detections around HD 23079, HD 196067, and HD 86226
Delisle et al. 2025 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
Gaia Data Release 2
Gaia DR2 Reference Overview
Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes
Stassun et al. 2017 Reference Overview
CNO behaviour in planet-harbouring stars. I. Nitrogen abundances in stars with planets
Suárez-Andrés et al. 2016 Reference Overview
Spectroscopic parameters for solar-type stars with moderate-to-high rotation. New parameters for ten planet hosts
Tsantaki et al. 2014 Reference Overview
All WISE Data Release
Cutri et al. 2014 Reference Overview
Stellar Parameters and Metallicities of Stars Hosting Jovian and Neptunian Mass Planets: A Possible Dependence of Planetary Mass on Metallicity
Ghezzi et al. 2010 Reference Overview
Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
Sousa et al. 2008 Reference Overview
Catalog of Nearby Exoplanets
Butler et al. 2006 Reference Overview
Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Southern Sample
Gray et al. 2006 Reference Overview
Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs
Valenti & Fischer 2005 Reference Overview
The Geneva-Copenhagen survey of the Solar neighbourhood. Ages,metallicities and kinematix properties of ~14 000 F and G dwarfs
Nordstrom et al. 2004 Reference Overview
Spectroscopic [Fe/H] for 98 extra-solar planet-host stars. Exploring the probability of planet formation
Santos et al. 2004 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview
Statistical properties of exoplanets. II. Metallicity, orbital parameters, and space velocities
Santos et al. 2003 Reference Overview
Two Extrasolar Planets from the Anglo-Australian Planet Search
Tinney et al. 2002 Reference Overview
The Hipparcos and Tycho Photometric System Passbands
Tycho 2 converted using Bessell 2000 Reference Overview
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog Reference Overview
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs Reference Overview
A Survey of Ca II H and K Chromospheric Emission in Southern Solar-Type Stars
Henry et al. 1996 Reference Overview
Michigan Catalog of two-dimensional spectral types for the HD stars, Vol 1
Michigan Catalog, Vol. 1 Reference Overview
The Henry Draper catalogue 0h, 1h, 2h, and 3h
Cannon & Pickering 1918 Reference Overview

Legend

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System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

External Link
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Debug Info

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https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/4/HD_23079.json

Catalog Parameters

RA

ra

03h39m42.77s

Dec

dec

-52d54m58.44s

β

elat

-68.16038

λ

elon

21.34837

b

glat

-49.6531

l

glon

264.32032

m_V

sy_vmag

7.12±0.03

m_TESS

sy_tmag

6.5652±0.0060

m_J

sy_jmag

6.030±0.018

m_H

sy_hmag

5.814±0.018

m_Ks

sy_kmag

5.705±0.020

sy_kepmag

no_data

m_W1

sy_w1mag

8.163±0.113

m_W2

sy_w2mag

8.349±0.070

m_W3

sy_w3mag

9.7630±0.2820

m_W4

sy_w4mag

6.255±0.079

sy_icmag

no_data

m_Gaia

sy_gaiamag

6.962350±0.000293

m_B

sy_bmag

7.634±0.034

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

213.7394128±0.0601784

μ_δ

sy_pmdec

-92.1032000±0.0618022

μ_α

sy_pmra

-192.8770000±0.0598019

π

sy_plx

29.8583000±0.0309075

Distance

sy_dist

33.4591+0.0349-0.0348

Set Parameters

R_✶

st_rad

1.0911082+0.0046188-0.0155942

T_eff

st_teff

5959±46

HD 23079 Overview

HD 23079 Architecture & Discovery Information

HD 23079