HD 207496

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
HD 207496
HD 207496 b	6.44 d	2.25 R_⨁	Transit	2023	Barros et al. 2023	Confirmed Planet

Exoplanet Archive Notes (1)

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HD 207496

Some stellar parameter values may be biased due to companion blend (WDS Catalog)

HD 207496 Stellar Parameters (8 Solutions)

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RA: 21h54m52.36s

Dec: -77d20m19.69s

Distance: 23.6060±0.0179 pc

Parallax: 42.3332000±0.0318252 mas

Ecliptic Latitude: -58.20082 deg

Ecliptic Longitude: 290.81936 deg

Galactic Latitude: -35.79483 deg

Galactic Longitude: 313.77934 deg

Total Proper Motion: 292.2203092±0.0602199 mas/yr

Proper Motion (RA): 224.8640000±0.0624526 mas/yr

Proper Motion (Dec): -186.6250000±0.0568227 mas/yr

Photometry: m_V
8.23±0.03; m_TESS
7.3661±0.0060; m_J
6.570±0.023; m_H
6.085±0.023; m_Ks
5.967±0.026; m_Gaia
7.972550±0.000514; m_B
9.167±0.000

Abundances (Hypatia Catalog): [Fe/H] 0.22±0.04 dex; [C/H] 0.45±0.09 dex; [Na/H] 0.09±0.04 dex; [Mg/H] -0.05±0.07 dex; [Al/H] 0.18±0.06 dex; [Si/H] 0.13±0.05 dex; [Ca/H] 0.18±0.06 dex; [BaII/H] 0.22±0.19 dex

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

Source	Barros et al. 2023	TICv8	Turnbull 2015	Gray et al. 2006	Hawley et al. 1996	Michigan Catalog, Vol. 1	Cannon & Pickering 1918	ExoFOP
T_eff (K)	4819±94	4815.000+112.100-144.606	4958	---	---	---	---	4867±179
L_✶ (log₁₀(L_⦿))	---	-0.5085751+0.0192906-0.0114772	-0.367 +0.066-0.077	---	---	---	---	---
M_✶ (M_⦿)	0.80±0.04	0.7800000+0.1001020-0.0829998	0.80	---	---	---	---	---
R_✶ (R_⦿)	0.769±0.026	0.8001520+0.0663236-0.0467618	0.88	---	---	---	---	0.80±0.06
Sp. T	K2.5 V	---	K3/4V	K2.5 V (k)	M2.5	K3/4 V	K2	---
ρ_✶ (g/cm³)	2.50±0.28	2.146559+0.736083-0.448834	---	---	---	---	---	---
log g (log₁₀(cm/s²))	4.507±0.040	4.5238200+0.0889557-0.1019410	---	---	---	---	---	4.438
Metallicity (dex)	0.0950±0.0380 [Fe/H]	---	---	---	---	---	---	---
Age (Gyr)	0.52±0.26	---	---	---	---	---	---	---
CAII LOG RHK	-4.457±0.053	---	---	---	---	---	---	---
P_rot (days)	12.36±0.12	---	---	---	---	---	---	---

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HD 207496 b Planetary Parameters (2 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity, Transit

Tools: Planetary Systems; Transit Prediction Service; TOI; Transit

Source	Barros et al. 2023	ExoFOP
a/R_✶	21.47+0.82-1.40	---
T_eq (K)	743±26	853
b	0.43+0.25-0.28	---
S (S_⨁)	72.9+8.5-7.5	87.8902
ω (deg)	57±22	---
M_p (M_⨁)	6.1±1.6	---
M_p (M_Jup)	0.019±0.005	---
e	0.231+0.042-0.049	---
i (deg)	88.79+0.80-0.75	---
P (days)	6.441008±0.000011	6.441006±0.000006
ρ (g/cm³)	3.17+0.97-0.91	---
R_p (R_⨁)	2.25+0.12-0.10	2.56374±0.19448
R_p (R_Jup)	0.201+0.011-0.009	0.228722±0.017350
R_p/R_✶	0.02663+0.00090-0.00052	---
K (m/s)	2.52±0.62	---
a (au)	0.0629±0.0011	---
T₁₄ (hours)	1.762+0.037-0.150	1.812±0.505
T_C (days)	2458658.78978±0.00050 (BJD-TDB)	2460140.2209270±0.0009902 (BJD)
δ (%)	---	0.09140000±0.00468059

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Ancillary Information (1 Unique File)

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+ HD 207496 (1 File Type, 1 File)

Literature Time Series (1 File Type, 1 File)

File Type	Data Points	Filter	Reference
Photometric Light Curve	139	Hp (Hipparcos)	Hipparcos and Tycho Catalogs

Nearby Data (within 30 arcseconds) Browse Nearby Data

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Known Objects: 1 Confirmed Planets; 2 2MASS Point Source Catalog

Data Files: 1 Associated Literature Data

Bibliography (13 References)

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The young mini-Neptune HD 207496b that is either a naked core or on the verge of becoming one
Barros et al. 2023 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
ExoFOP TOI Table
ExoFOP
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 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
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview
Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995)
van Altena et al. 2001 Reference Overview
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog Reference Overview
The Washington Double Star Catalog (WDS, 1996.0)
WDS Catalog Reference Overview
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs Reference Overview
The Palomar/MSU nearby star spectroscopic survey. II. The southern M dwarfs and investigations of magnetic activity.
Hawley 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
Search
Browse
Download

Debug Info

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https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/4/HD_207496.json

Catalog Parameters

RA

ra

21h54m52.36s

Dec

dec

-77d20m19.69s

β

elat

-58.20082

λ

elon

290.81936

b

glat

-35.79483

l

glon

313.77934

m_V

sy_vmag

8.23±0.03

m_TESS

sy_tmag

7.3661±0.0060

m_J

sy_jmag

6.570±0.023

m_H

sy_hmag

6.085±0.023

m_Ks

sy_kmag

5.967±0.026

sy_kepmag

no_data

sy_w1mag

no_data

sy_w2mag

no_data

sy_w3mag

no_data

sy_w4mag

no_data

sy_icmag

no_data

m_Gaia

sy_gaiamag

7.972550±0.000514

m_B

sy_bmag

9.167±0.000

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

292.2203092±0.0602199

μ_δ

sy_pmdec

-186.6250000±0.0568227

μ_α

sy_pmra

224.8640000±0.0624526

π

sy_plx

42.3332000±0.0318252

Distance

sy_dist

23.6060±0.0179

Set Parameters

R_✶

st_rad

0.88

T_eff

st_teff

4958

HD 207496 Overview

HD 207496 Architecture & Discovery Information

HD 207496