HD 217107

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
HD 217107
HD 217107 b	7.13 d	459.58 M_⨁	Radial Velocity	1998	Fischer et al. 1999	Confirmed Planet
HD 217107 c	5138.7 d	1388.91 M_⨁	Radial Velocity	2005	Vogt et al. 2005	Confirmed Planet

Exoplanet Archive Notes (2)

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HD 217107

Some stellar parameter values may be biased due to companion blend (WDS Catalog)
Stellar mass selected from evolutionary track mass (M_track) in Table 4 (Ghezzi et al. 2010)

HD 217107 Stellar Parameters (25 Solutions)

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RA: 22h58m15.53s

Dec: -02d23m43.62s

Distance: 20.0619+0.0232-0.0233
pc

Parallax: 49.8170000±0.0573616 mas

Ecliptic Latitude: 3.86629 deg

Ecliptic Longitude: 344.8552 deg

Galactic Latitude: -53.32407 deg

Galactic Longitude: 70.47402 deg

Total Proper Motion: 16.3978436±0.0840125 mas/yr

Proper Motion (RA): -7.107790±0.124599 mas/yr

Proper Motion (Dec): -14.7773000±0.0714091 mas/yr

Photometry: m_V
6.155±0.005; m_TESS
5.4989±0.0062; m_J
4.949±0.037; m_H
4.765±0.076; m_Ks
4.536±0.021; m_W1
4.243±0.264; m_W2
4.291±0.169; m_W3
4.528±0.015; m_W4
4.510±0.031; m_Gaia
5.9640100±0.0003877; m_B
6.895±0.005

Abundances (Hypatia Catalog): [Fe/H] 0.39±0.18 dex; [C/H] 0.37±0.13 dex; [O/H] 0.19±0.24 dex; [Na/H] 0.38±0.19 dex; [Mg/H] 0.41±0.20 dex; [Al/H] 0.39±0.20 dex; [Si/H] 0.35±0.14 dex; [Ca/H] 0.29±0.18 dex; [Y/H] 0.32±0.10 dex; [BaII/H] 0.21±0.16 dex

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

Source	An et al. 2025	An et al. 2025	Giovinazzi et al. 2025	Rosenthal et al. 2021	TICv8	Gaia DR2	Stassun et al. 2017	Suárez-Andrés et al. 2016	Bryan et al. 2016	Turnbull 2015	Maldonado et al. 2015	Ghezzi et al. 2010	Sanz-Forcada et al. 2010	Baines et al. 2009	Takeda et al. 2007	Wittenmyer et al. 2007	Vogt et al. 2005	Valenti & Fischer 2005	Wright et al. 2004	Nordstrom et al. 2004	Santos et al. 2004	Gray et al. 2003	Nidever et al. 2002	Michigan Catalog, Vol. 5	Cannon & Pickering 1918
S Index	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	0.150±0.019	---	---	---	---	---	---
CAII LOG RHK	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	-5.08	---	---	---	---	---	---
T_eff (K)	---	---	---	5606.82922387500±94.32558918035	5575.0000+126.2090-89.5877	5630.0000+160.0000-94.6665	5622±17	5679	---	5704	5680±20	5665±60	---	---	---	5646±26	---	---	---	---	5646	---	---	---	---
Metallicity (dex)	---	---	---	0.33991790200099997±0.05971608696617500 [Fe/H]	0.28±0.10 [M/H]	---	0.36 [Fe/H]	0.39±0.10 [N/H]	---	0.39 [Fe/H]	0.37±0.02 [Fe/H]	0.40±0.04 [Fe/H]	---	---	---	0.37±0.05 [Fe/H]	0.32 [Fe/H]	---	---	---	0.37 [Fe/H]	---	---	---	---
M_✶ (M_⦿)	1.135+0.059-0.065	1.132+0.036-0.034	1.045+0.018-0.023	1.05963082882500±0.04470613802572	0.98000000+0.14636300-0.09749810	---	1.00±0.05	---	1.108+0.034-0.052	1.11	---	1.10±0.10	---	---	1.108+0.034-0.052	1.02±0.05	1.053±0.1	---	---	---	1.02	---	---	---	---
log g (log₁₀(cm/s²))	---	---	---	4.3250075846000±0.0300946839734	4.2714300+0.0752396-0.0708430	---	4.34±0.02	4.32	---	4.42	4.47±0.05	4.25±0.16	---	---	4.42+0.04-0.03	---	---	---	---	---	4.31	---	---	---	---
L_✶ (log₁₀(L_⦿))	---	---	---	---	0.097540151+0.008779417-0.011171884	0.099802316+0.000673171-0.000674181	---	---	---	0.093±0.014	---	0.0420±0.0600	---	---	---	---	---	---	---	---	---	---	---	---	---
Age (Gyr)	---	---	11.9±2.0	---	---	---	---	---	---	5.84	---	4.0+2.0-3.0	15	---	5.84+1.92-2.44	---	---	---	---	---	---	---	---	---	---
R_✶ (R_⦿)	---	---	1.2245±0.0173	1.1719496616349998±0.0275316265396500	1.1993100+0.0599754-0.0493814	1.1790631+0.0406739-0.0642638	1.11±0.01	---	---	1.08	---	1.09±0.09	---	---	1.08+0.04-0.03	---	---	---	---	---	---	---	---	---	---
Sp. T	---	---	G	---	---	---	---	---	---	G8IV/V	---	---	---	G8 IV	---	G8 IV	G8 IV	---	---	---	---	G8 IV-V	---	G8 IV/V	G5
γ (km/s)	---	---	---	---	---	-13.142786682053032±0.126796037692861	---	---	---	---	---	---	---	---	---	---	---	-13.4	---	-14.0±0.6	---	---	-13.4	---	---
v sin i (km/s)	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	0.0±0.5	---	2	---	---	---	---	---
ρ_✶ (g/cm³)	---	---	---	---	0.8009266+0.1898247-0.1315187	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---	---

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HD 217107 b Planetary Parameters (8 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity

Tools: Planetary Systems

Source	Giovinazzi et al. 2025	An et al. 2025	Rosenthal et al. 2021	Stassun et al. 2017	Feng et al. 2015	Wright et al. 2009	Wittenmyer et al. 2007	Vogt et al. 2005
M_p sin i (M_⨁)	---	461.2+15.9-17.8	440.2±12.4	413±16	449.2338±1.3348	441.77±34.96	422.70±15.89	435.41±44.49
M_p sin i (M_Jup)	---	1.451+0.050-0.056	1.385±0.039	1.30±0.05	1.4135±0.0042	1.39±0.11	1.33±0.05	1.37±0.14
e	0.1284+0.0015-0.0014	0.1311+0.0030-0.0029	0.1279+0.0017-0.0016	0.13±0.01	0.1283±0.0027	0.1267±0.0052	0.132±0.005	0.13±0.02
i (deg)	93.0+25.0-26.0	91.0+25.0-24.0	---	---	---	---	---	---
P (days)	7.1270166±0.0000047	7.1268603±0.0000110	7.1268744+0.0000067-0.0000065	7.126820±0.000039	7.126846±0.000013	7.126816±0.000039	7.12689±0.00005	7.1269±0.00022
a (au)	0.07359+0.00042-0.00053	0.0756+0.0013-0.0015	0.0739+0.0010-0.0011	0.080±0.000	0.07505±0.00097	0.0748±0.0043	0.073±0.001	0.074±0.002
T_p (days)	2455201.109±0.014 (JD)	---	---	---	2454395.789±0.025	2454396±39	2449998.50±0.04	2449998.4241±0.17
ω (deg)	22.78+0.71-0.70	---	22.6±0.8	---	24.0±1.3	24.4±3.0	22.7±2.0	21.1±7.6
K (m/s)	---	---	141.91±0.26	139.2±0.9	140.30±0.40	139.20±0.92	140.6±0.7	140.7±2.6
T_C (days)	---	---	2456306.847+0.004-0.003 (BJD)	---	---	---	---	---
M_p (M_⨁)	459.6+57.2-21.3	---	---	---	---	---	---	---
M_p (M_Jup)	1.446+0.180-0.067	---	---	---	---	---	---	---

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HD 217107 c Planetary Parameters (8 Solutions)

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Status: Confirmed Planet

Detected By: Astrometry, Radial Velocity

Tools: Planetary Systems

Source	Giovinazzi et al. 2025	An et al. 2025	Rosenthal et al. 2021	Bryan et al. 2016	Feng et al. 2015	Wright et al. 2009	Wittenmyer et al. 2007	Vogt et al. 2005
T_p (days)	2455911.0±15.0 (JD)	---	---	2455951+49-59 (JD)	2450770±16	2451106±39	2450921±84	2451030±300
ω (deg)	205.0±1.1	---	24.7±1.2	206.2±2.7	206.3±1.7	198.6±6.0	164	164±30.2
M_p sin i (M_⨁)	---	---	1370±41	1424+64-57	1434.306±22.883	826.32±47.67	794.54±152.55	667.4±318
M_p sin i (M_Jup)	---	---	4.31±0.13	4.48+0.20-0.18	4.513±0.072	2.60±0.15	2.50±0.48	2.1±1
e	0.3918+0.0064-0.0067	0.3908+0.0082-0.0077	0.3928+0.0069-0.0067	0.376±0.014	0.3848±0.0086	0.517±0.033	0.537±0.026	0.55±0.20
P (days)	5138.7±11.0	5164.6+15.0-15.3	5141±13	5178+74-67	5189±21	4270±220	3352±157	3150±1000
K (m/s)	---	---	53.08+0.71-0.70	53.2+1.9-1.7	53.41±0.75	35.7±1.3	39.8±6.4	34.4±20
a (au)	5.922+0.035-0.044	6.100±0.060	5.942+0.083-0.086	---	6.074±0.080	5.32±0.38	4.41±0.21	4.3±2
T_C (days)	---	---	2460064+22-23 (BJD)	---	---	---	---	---
M_p (M_⨁)	1389+41-32	1430±38	---	---	---	---	---	---
M_p (M_Jup)	4.37+0.13-0.10	4.50±0.12	---	---	---	---	---	---
i (deg)	88.0+14.0-12.0	89.3+8.9-9.0	---	---	---	---	---	---

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Ancillary Information (10 Unique Files)

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+ HD 217107 (2 File Types, 10 Files)

Literature Time Series (2 File Types, 10 Files)

File Type	Data Points	Filter	Reference
Photometric Light Curve	70	Hp (Hipparcos)	Hipparcos and Tycho Catalogs
Radial Velocity Curve	121	Optical Spectra	Wright et al. 2009
Radial Velocity Curve	86	Optical Spectra	Wright et al. 2009
Radial Velocity Curve	23	Optical Spectra	Wittenmyer et al. 2007
Radial Velocity Curve	63	Optical Spectra	Vogt et al. 2005
Radial Velocity Curve	63	Optical Spectra	Naef et al. 2001
Radial Velocity Curve	21	Optical Spectra	Vogt et al. 2000
Radial Velocity Curve	8	Optical Spectra	Fischer et al. 1999
Radial Velocity Curve	7	Optical Spectra	Fischer et al. 1999
Radial Velocity Curve	6	Optical Spectra	Fischer et al. 1999

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

Data Files: 2 Associated Literature Data

Bibliography (36 References)

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Orbits and Masses for 156 Companions from Combined Astrometry and Radial Velocities, and a Validation of Gaia Non-single-star Solutions
An et al. 2025 Reference Overview
The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems
Giovinazzi et al. 2025 Reference Overview
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
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
Statistics of Long Period Gas Giant Planets in Known Planetary Systems
Bryan et al. 2016 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
The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets
Feng et al. 2015 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
A scenario of planet erosion by coronal radiation
Sanz-Forcada et al. 2010 Reference Overview
Eleven Exoplanet Host Star Angular Diameters from the Chara Array
Baines et al. 2009 Reference Overview
Ten New and Updated Multiplanet Systems and a Survey of Exoplanetary Systems
Wright 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
Long-Period Objects in the Extrasolar Planetary Systems 47 Ursae Majoris and 14 Herculis
Wittenmyer et al. 2007 Reference Overview
Five New Multicomponent Planetary Systems
Vogt et al. 2005 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
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
Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I
Gray et al. 2003 Reference Overview
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog Reference Overview
Radial Velocities of 889 late-type stars
Nidever et al. 2002 Reference Overview
The CORALIE survey for southern extrasolar planets. V. 3 new extrasolar planets
Naef et al. 2001 Reference Overview
Six New Planets from the Keck Precision Velocity Survey
Vogt et al. 2000 Reference Overview
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog Reference Overview
Planetary Companions around Two Solar-Type Stars: HD 195019 andHD 217107
Fischer et al. 1999 Reference Overview
Michigan Catalog of two-dimensional spectral types for the HD stars, Vol 5
Michigan Catalog, Vol. 5 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
UBVRIJKL Photometry of Bright Stars
Johnson et al. 1966 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
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Debug Info

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https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/5/HD_217107.json

Catalog Parameters

RA

ra

22h58m15.53s

Dec

dec

-02d23m43.62s

β

elat

3.86629

λ

elon

344.8552

b

glat

-53.32407

l

glon

70.47402

m_V

sy_vmag

6.155±0.005

m_TESS

sy_tmag

5.4989±0.0062

m_J

sy_jmag

4.949±0.037

m_H

sy_hmag

4.765±0.076

m_Ks

sy_kmag

4.536±0.021

sy_kepmag

no_data

m_W1

sy_w1mag

4.243±0.264

m_W2

sy_w2mag

4.291±0.169

m_W3

sy_w3mag

4.528±0.015

m_W4

sy_w4mag

4.510±0.031

sy_icmag

no_data

m_Gaia

sy_gaiamag

5.9640100±0.0003877

m_B

sy_bmag

6.895±0.005

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

16.3978436±0.0840125

μ_δ

sy_pmdec

-14.7773000±0.0714091

μ_α

sy_pmra

-7.107790±0.124599

π

sy_plx

49.8170000±0.0573616

Distance

sy_dist

20.0619+0.0232-0.0233

Set Parameters

R_✶

st_rad

1.08

T_eff

st_teff

5646

HD 217107 Overview

HD 217107 Architecture & Discovery Information

HD 217107