HD 7924

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
HD 7924
HD 7924 b	5.4 d	> 6.36 M_⨁	Radial Velocity	2008	Howard et al. 2009	Confirmed Planet
HD 7924 c	15.3 d	> 7.86 M_⨁	Radial Velocity	2015	Fulton et al. 2015	Confirmed Planet
HD 7924 d	24.45 d	> 6.44 M_⨁	Radial Velocity	2015	Fulton et al. 2015	Confirmed Planet

Exoplanet Archive Notes (1)

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HD 7924 b

Time of Periastron/Transit Midpoint definition ambiguity in ref.; value omitted. (Kammer et al. 2014)

HD 7924 Stellar Parameters (15 Solutions)

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RA: 01h21m58.96s

Dec: +76d42m36.53s

Distance: 16.9922±0.0072 pc

Parallax: 58.8216000±0.0248941 mas

Ecliptic Latitude: 59.41724 deg

Ecliptic Longitude: 64.95821 deg

Galactic Latitude: 13.94549 deg

Galactic Longitude: 124.73557 deg

Total Proper Motion: 47.6113429±0.0397999 mas/yr

Proper Motion (RA): -34.643200±0.041486 mas/yr

Proper Motion (Dec): -32.6602000±0.0378131 mas/yr

Photometry: m_V
7.17896±0.02300; m_TESS
6.3929±0.0060; m_J
5.618±0.026; m_H
5.231±0.033; m_Ks
5.159±0.020; m_W1
5.171±0.181; m_W2
5.025±0.099; m_W3
5.195±0.018; m_W4
5.106±0.028; m_Gaia
6.925160±0.000196; m_B
7.907±0.006

Abundances (Hypatia Catalog): [Fe/H] -0.18±0.12 dex; [C/H] -0.18±0.04 dex; [O/H] -0.16±0.10 dex; [Na/H] -0.20±0.16 dex; [Mg/H] -0.02±0.08 dex; [Al/H] -0.13±0.12 dex; [Si/H] -0.14±0.04 dex; [Ca/H] -0.12±0.08 dex; [Y/H] -0.21±0.15 dex; [BaII/H] -0.27±0.12 dex

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

Source	Rosenthal et al. 2021	TICv8	Gaia DR2	Stassun et al. 2017	Turnbull 2015	Maldonado et al. 2015	Fulton et al. 2015	von Braun et al. 2014	Santos et al. 2013	Howard et al. 2009	Takeda et al. 2007	Valenti & Fischer 2005	Wright et al. 2004	Duncan et al. 1991	Cannon & Pickering 1918
S Index	---	---	---	---	---	---	---	---	---	---	---	---	0.222±0.029	0.2221	---
CAII LOG RHK	---	---	---	---	---	---	---	---	---	---	---	---	-4.83	---	---
T_eff (K)	5171.13037547000±74.18373856175	5136.000+158.949-127.586	5243.500+66.750-136.167	5131±14	5177	5272±30	5075±83	5075±83	5133±68	5177±44	---	---	---	---	---
L_✶ (log₁₀(L_⦿))	---	-0.4063648+0.0130036-0.0119426	-0.41357356+0.00032420-0.00032444	---	-0.409 +0.052-0.060	---	---	-0.438±0.009	---	-0.434±0.022	---	---	---	---	---
Metallicity (dex)	-0.1234819334550±0.0575267262194 [Fe/H]	-0.14±0.10 [M/H]	---	-0.21 [Fe/H]	-0.15 [Fe/H]	-0.11±0.08 [Fe/H]	-0.15±0.03 [Fe/H]	-0.14 [Fe/H]	-0.22±0.04 [Fe/H]	-0.15±0.03 [Fe/H]	---	---	---	---	---
v sin i (km/s)	---	---	---	---	---	---	---	---	---	1.35±0.5	---	1.3±0.5	---	---	---
M_✶ (M_⦿)	0.8020359940880001±0.0329706799119000	0.870000+0.115419-0.097991	---	0.65±0.05	0.83	---	0.832 +0.022-0.036	0.81	0.77±0.06	0.832 +0.022-0.036	0.832+0.022-0.036	---	---	---	---
R_✶ (R_⦿)	0.77984042495799999±0.01501771042215000	0.7910800+0.0491342-0.0604538	0.7527024+0.0406706-0.0188040	0.78±0.01	0.78	---	0.7821±0.0258	0.7821±0.0258	---	0.78±0.02	0.78±0.02	---	---	---	---
log g (log₁₀(cm/s²))	4.554882688610±0.025629351329	4.5811500+0.1047270-0.0814598	---	4.46±0.03	4.59	4.79±0.08	4.59 +0.02-0.03	---	4.46±0.12	4.59 +0.02-0.03	4.59+0.02-0.03	---	---	---	---
Sp. T	---	---	---	---	K0	---	K0.5 V	K0 V	---	K0 V	---	---	---	---	K0
γ (km/s)	---	---	-22.695622051034494±0.151205163897129	---	---	---	---	---	---	---	---	-23.4	---	---	---
Age (Gyr)	---	---	---	---	0.88	---	---	---	---	---	0.880±6.360	---	---	---	---
ρ_✶ (g/cm³)	---	2.4775582+0.7914384-0.5560609	---	---	---	---	---	---	---	---	---	---	---	---	---

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HD 7924 b Planetary Parameters (6 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity

Tools: Planetary Systems

Source	Stassun et al. 2017	Rosenthal et al. 2021	Kiefer et al. 2021	Fulton et al. 2015	Kammer et al. 2014	Howard et al. 2009
M_p (M_⨁)	---	---	<2058	---	---	---
M_p (M_Jup)	---	---	<6.476	---	---	---
M_p sin i (M_⨁)	6.4±0.0	8.23±0.44	8.699	8.68+0.52-0.51	9.260±1.770	9.26
M_p sin i (M_Jup)	0.020±0.000	0.0259±0.0014	0.02737	0.0273+0.0016-0.0016	0.02914±0.00557	0.0291
i (deg)	---	---	>0.2472	---	---	---
P (days)	5.39792±0.00025	5.39785+0.00017-0.00018	5.398	5.39792±0.00025	5.39699±0.00013	5.3978±0.0015
T_p (days)	---	---	---	---	---	2454727.27±0.87
ω (deg)	---	-8.0+55.0-48.0	---	332+71-50	---	25±60
e	0.060±0.050	0.049+0.044-0.035	---	0.0580+0.0560-0.0400	0	0.17±0.16
K (m/s)	3.6±0.2	3.48+0.17-0.16	---	3.59+0.20-0.19	---	3.87±0.72
a (au)	0.060±0.000	0.05595+0.00075-0.00078	---	0.05664+0.00067-0.00069	---	0.057
T_eq (K)	---	---	---	825.9+6.6-6.5	---	---
S (S_⨁)	---	---	---	113.7+3.7-3.6	---	---
T_C (days)	---	2456174.716+0.072-0.084 (BJD)	---	---	---	---

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HD 7924 c Planetary Parameters (3 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity

Tools: Planetary Systems

Source	Fulton et al. 2015	Rosenthal et al. 2021	Kiefer et al. 2021
T_eq (K)	583.6+4.7-4.6	---	---
S (S_⨁)	28.35+0.92-0.89	---	---
ω (deg)	27+52-60	26+32-48	---
M_p sin i (M_⨁)	7.86+0.73-0.71	8.84+0.64-0.60	7.895
M_p sin i (M_Jup)	0.0247+0.0023-0.0022	0.0278+0.0020-0.0019	0.02484
e	0.0980+0.0960-0.0690	0.100+0.069-0.062	---
P (days)	15.2990+0.0032-0.0033	15.3006±0.0018	15.30
K (m/s)	2.31+0.21-0.20	2.66±0.17	---
a (au)	0.1134+0.0013-0.0014	0.1121+0.0015-0.0016	---
M_p (M_⨁)	---	---	<1763
M_p (M_Jup)	---	---	<5.546
i (deg)	---	---	>0.2575
T_C (days)	---	2455203.73+0.34-0.36 (BJD)	---

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HD 7924 d Planetary Parameters (3 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity

Tools: Planetary Systems

Source	Fulton et al. 2015	Rosenthal et al. 2021	Kiefer et al. 2021
T_eq (K)	499±4	---	---
S (S_⨁)	15.17+0.49-0.48	---	---
ω (deg)	119+210-97	22+37-48	---
M_p sin i (M_⨁)	6.44+0.79-0.78	6.10+0.67-0.64	6.477
M_p sin i (M_Jup)	0.0203+0.0025-0.0025	0.0192+0.0021-0.0020	0.02038
e	0.21+0.13-0.12	0.17±0.10	---
P (days)	24.451+0.015-0.017	24.4459+0.0090-0.0091	24.45
K (m/s)	1.65±0.21	1.59+0.18-0.17	---
a (au)	0.1551+0.0018-0.0019	0.1532±0.0021	---
M_p (M_⨁)	---	---	<1568
M_p (M_Jup)	---	---	<4.934
i (deg)	---	---	>0.2188
T_C (days)	---	2455188.30+0.93-0.91 (BJD)	---

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Ancillary Information (2 Unique Files)

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+ HD 7924 (2 File Types, 2 Files)

Literature Time Series (2 File Types, 2 Files)

File Type	Data Points	Filter	Reference
Photometric Light Curve	140	Hp (Hipparcos)	Hipparcos and Tycho Catalogs
Radial Velocity Curve	93	Optical Spectra	Howard et al. 2009

Nearby Data (within 30 arcseconds) Browse Nearby Data

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Known Objects: 3 Confirmed Planets; 2 2MASS Point Source Catalog

Data Files: 3 Associated Literature Data

Bibliography (23 References)

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The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades
Rosenthal et al. 2021 Reference Overview
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
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 Reference Overview
Searching for signatures of planet formation in stars with circumstellar debris discs
Maldonado et al. 2015 Reference Overview
Three Super-Earths Orbiting HD 7924
Fulton et al. 2015 Reference Overview
Stellar diameters and temperatures - V. 11 newly characterized exoplanet host stars
von Braun et al. 2014 Reference Overview
A Spitzer Search for Transits of Radial Velocity Detected Super-Earths
Kammer et al. 2014 Reference Overview
All WISE Data Release
Cutri et al. 2014 Reference Overview
SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs. I. New atmospheric parameters and masses for 48 stars with planets
Santos et al. 2013 Reference Overview
The NASA-UC Eta-Earth Program: I. A Super-Earth Orbiting HD 7924
Howard et al. 2009 Reference Overview
Validation of the new Hipparcos reduction
van Leeuwen et al. 2007 Reference Overview
Structure and Evolution of Nearby Stars with Planets. II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog
Takeda et al. 2007 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
Chromospheric Ca II Emission in Nearby F, G, K, and M Stars
Wright et al. 2004 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 Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs Reference Overview
CA II H and K measurements made at Mount Wilson Observatory, 1966-1983
Duncan et al. 1991 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_7924.json

Catalog Parameters

RA

ra

01h21m58.96s

Dec

dec

+76d42m36.53s

β

elat

59.41724

λ

elon

64.95821

b

glat

13.94549

l

glon

124.73557

m_V

sy_vmag

7.17896±0.02300

m_TESS

sy_tmag

6.3929±0.0060

m_J

sy_jmag

5.618±0.026

m_H

sy_hmag

5.231±0.033

m_Ks

sy_kmag

5.159±0.020

sy_kepmag

no_data

m_W1

sy_w1mag

5.171±0.181

m_W2

sy_w2mag

5.025±0.099

m_W3

sy_w3mag

5.195±0.018

m_W4

sy_w4mag

5.106±0.028

sy_icmag

no_data

m_Gaia

sy_gaiamag

6.925160±0.000196

m_B

sy_bmag

7.907±0.006

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

47.6113429±0.0397999

μ_δ

sy_pmdec

-32.6602000±0.0378131

μ_α

sy_pmra

-34.643200±0.041486

π

sy_plx

58.8216000±0.0248941

Distance

sy_dist

16.9922±0.0072

Set Parameters

R_✶

st_rad

0.78±0.02

T_eff

st_teff

5177±44

HD 7924 Overview

HD 7924 Architecture & Discovery Information

HD 7924