HD 6718

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
HD 6718
HD 6718 b	2496 d	19956.45 M_⨁	Radial Velocity	2009	Naef et al. 2010	False Positive Planet

Exoplanet Archive Notes (1)

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HD 6718 b

Confirmed planet signal refuted in ref. (Kiefer et al. 2021)

HD 6718 Stellar Parameters (7 Solutions)

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RA: 01h07m48.86s

Dec: -08d14m01.02s

Distance: 51.3444+0.1393-0.1385
pc

Parallax: 19.447600±0.052296 mas

Ecliptic Latitude: -14.25202 deg

Ecliptic Longitude: 12.37711 deg

Galactic Latitude: -70.71162 deg

Galactic Longitude: 135.28348 deg

Total Proper Motion: 193.6807171±0.1139585 mas/yr

Proper Motion (RA): 192.637000±0.114352 mas/yr

Proper Motion (Dec): 20.0800000±0.0686852 mas/yr

Photometry: m_V
8.45±0.03; m_TESS
7.8472±0.0060; m_J
7.269±0.018; m_H
6.988±0.046; m_Ks
6.876±0.020; m_W1
6.849±0.064; m_W2
6.858±0.020; m_W3
6.894±0.019; m_W4
6.853±0.086; m_Gaia
8.281470±0.000247; m_B
9.053001±0.033000

Abundances (Hypatia Catalog): [Fe/H] -0.06±0.14 dex; [C/H] -0.03±0.09 dex; [O/H] -0.10±0.08 dex; [Na/H] -0.15±0.12 dex; [Mg/H] -0.03±0.10 dex; [Al/H] -0.12±0.07 dex; [Si/H] -0.07±0.08 dex; [Ca/H] -0.04±0.08 dex; [Y/H] -0.09±0.07 dex; [BaII/H] -0.06±0.10 dex

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

Source	TICv8	Gaia DR2	Stassun et al. 2017	Naef et al. 2010	Nordstrom et al. 2004	Michigan Catalog, Vol. 5	Cannon & Pickering 1918
T_eff (K)	5729.7400+96.0963-109.6310	5730.0000+39.6665-24.7330	5801±41	5746±19	---	---	---
L_✶ (log₁₀(L_⦿))	-0.01840181+0.01068031-0.01053016	-0.017145259+0.001586875-0.001592677	---	0.0531	---	---	---
Metallicity (dex)	-0.0641376±0.0039725 [M/H]	---	-0.03 [Fe/H]	-0.06±0.02 [Fe/H]	---	---	---
γ (km/s)	---	34.762041295183835±0.171829982007819	---	34.7509±0.0013	34.1±0.3	---	---
v sin i (km/s)	---	---	---	1.76±1.0	3	---	---
M_✶ (M_⦿)	1.0200000+0.1642100-0.0907124	---	1.08±0.21	0.96	---	---	---
R_✶ (R_⦿)	0.99353200+0.04326530-0.03749850	0.994880140+0.008644560-0.013632600	0.95±0.02	1.02±0.03	---	---	---
log g (log₁₀(cm/s²))	4.4523000+0.0562066-0.0855512	---	4.51±0.08	4.48±0.03	---	---	---
Sp. T	---	---	---	---	---	G5 V	G0
ρ_✶ (g/cm³)	1.4662898+0.3299698-0.2200767	---	---	---	---	---	---

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HD 6718 b Planetary Parameters (3 Solutions)

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Status: False Positive Planet

Detected By: Radial Velocity

Tools

Source	Kiefer et al. 2021	Stassun et al. 2017	Naef et al. 2010
M_p sin i (M_⨁)	495.5	534±76	496 +35-32
M_p sin i (M_Jup)	1.559	1.68±0.24	1.56 +0.11-0.10
e	---	0.10±0.08	0.10 +0.11-0.04
P (days)	2496	2496.00000±180.00000	2496±176
K (m/s)	---	24.1±1.5	24.1±1.5
a (au)	---	3.55±0.18	3.56 +0.24-0.15
T_p (days)	---	---	2454357±251
ω (deg)	---	---	286 +64-35
M_p (M_⨁)	19956+5397-4386	---	---
M_p (M_Jup)	62.79+16.98-13.80	---	---
i (deg)	1.488+0.410-0.310	---	---

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Ancillary Information (1 Unique File)

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+ HD 6718 (1 File Type, 1 File)

Literature Time Series (1 File Type, 1 File)

File Type	Data Points	Filter	Reference
Photometric Light Curve	96	Hp (Hipparcos)	Hipparcos and Tycho Catalogs

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

Data Files: 1 Associated Literature Data

Bibliography (12 References)

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Determining the true mass of radial-velocity exoplanets with Gaia. Nine planet candidates in the brown dwarf or stellar regime and 27 confirmed planets
Kiefer et al. 2021 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
All WISE Data Release
Cutri et al. 2014 Reference Overview
The HARPS search for southern extrasolar planets. XXIII. 8 planetary companions to low-activity solar-type stars
Naef et al. 2010 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
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog Reference Overview
Michigan Catalog of two-dimensional spectral types for the HD stars, Vol 5
Michigan Catalog, Vol. 5 Reference Overview
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs 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_6718.json

Catalog Parameters

RA

ra

01h07m48.86s

Dec

dec

-08d14m01.02s

β

elat

-14.25202

λ

elon

12.37711

b

glat

-70.71162

l

glon

135.28348

m_V

sy_vmag

8.45±0.03

m_TESS

sy_tmag

7.8472±0.0060

m_J

sy_jmag

7.269±0.018

m_H

sy_hmag

6.988±0.046

m_Ks

sy_kmag

6.876±0.020

sy_kepmag

no_data

m_W1

sy_w1mag

6.849±0.064

m_W2

sy_w2mag

6.858±0.020

m_W3

sy_w3mag

6.894±0.019

m_W4

sy_w4mag

6.853±0.086

sy_icmag

no_data

m_Gaia

sy_gaiamag

8.281470±0.000247

m_B

sy_bmag

9.053001±0.033000

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

193.6807171±0.1139585

μ_δ

sy_pmdec

20.0800000±0.0686852

μ_α

sy_pmra

192.637000±0.114352

π

sy_plx

19.447600±0.052296

Distance

sy_dist

51.3444+0.1393-0.1385

Set Parameters

R_✶

st_rad

1.02±0.03

T_eff

st_teff

5746±19

HD 6718 Overview

HD 6718 Architecture & Discovery Information

HD 6718