HD 68988

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
HD 68988
HD 68988 b	6.28 d	> 626.13 M_⨁	Radial Velocity	2001	Vogt et al. 2002	Confirmed Planet
HD 68988 c	16000 d	> 4767.43 M_⨁	Radial Velocity	2021	Rosenthal et al. 2021	Confirmed Planet

HD 68988 Stellar Parameters (15 Solutions)

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RA: 08h18m22.45s

Dec: +61d27m39.07s

Distance: 60.8447+0.1918-0.1906
pc

Parallax: 16.4066000±0.0512603 mas

Ecliptic Latitude: 40.50824 deg

Ecliptic Longitude: 110.8974 deg

Galactic Latitude: 33.91958 deg

Galactic Longitude: 155.26292 deg

Total Proper Motion: 131.8506008±0.0725237 mas/yr

Proper Motion (RA): 128.3290000±0.0732021 mas/yr

Proper Motion (Dec): 30.2696000±0.0590152 mas/yr

Photometry: m_V
8.20±0.03; m_TESS
7.6263±0.0060; m_J
7.060±0.021; m_H
6.812±0.020; m_Ks
6.743±0.024; m_W1
6.715±0.072; m_W2
6.710±0.022; m_W3
6.756±0.015; m_W4
6.708±0.067; m_Gaia
8.046110±0.000385; m_B
8.838±0.025

Abundances (Hypatia Catalog): [Fe/H] 0.37±0.14 dex; [C/H] 0.33±0.22 dex; [O/H] 0.23±0.07 dex; [Na/H] 0.43±0.16 dex; [Mg/H] 0.41±0.16 dex; [Al/H] 0.37±0.08 dex; [Si/H] 0.35±0.09 dex; [Ca/H] 0.33±0.11 dex; [Y/H] 0.42±0.13 dex; [BaII/H] 0.14±0.05 dex

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

Source	An et al. 2025	An et al. 2025	Rosenthal et al. 2021	TICv8	Gaia DR2	Stassun et al. 2017	Takeda et al. 2007	Butler et al. 2006	Valenti & Fischer 2005	Wright et al. 2004	Nordstrom et al. 2004	Santos et al. 2004	Nidever et al. 2002	Vogt et al. 2002	Cannon & Pickering 1918
S Index	---	---	---	---	---	---	---	---	---	0.154±0.020	---	---	---	---	---
CAII LOG RHK	---	---	---	---	---	---	---	---	---	-5.04	---	---	---	---	---
T_eff (K)	---	---	5883.4072834050±103.8477224621	5866.000+104.228-101.400	5838.6665+71.3335-81.1665	5932±23	---	5960	---	---	---	5988±52	---	---	---
Metallicity (dex)	---	---	0.305152852971500±0.057257624370375 [Fe/H]	0.3±0.1 [M/H]	---	0.35 [Fe/H]	---	0.324 [Fe/H]	---	---	---	0.36±0.06 [Fe/H]	---	0.24 [Fe/H]	---
M_✶ (M_⦿)	1.211+0.065-0.071	1.201±0.022	1.1716649466950±0.0489926415846	1.060000+0.127512-0.127446	---	1.28±0.09	1.124+0.122-0.052	1.18	---	---	---	1.18	---	1.20	---
log g (log₁₀(cm/s²))	---	---	4.30923367128000±0.03035420397415	4.2718300+0.0684464-0.0684873	---	4.40±0.03	4.40+0.05-0.04	4.413	---	---	---	4.45±0.15	---	---	---
v sin i (km/s)	---	---	---	---	---	---	---	2.84	2.8±0.5	---	5	---	---	---	---
R_✶ (R_⦿)	---	---	1.2557333158750001±0.0288546971229000	1.2467200+0.0602487-0.0439523	1.2616627+0.0358235-0.0302726	1.19±0.02	1.14±0.06	---	---	---	---	---	---	---	---
Age (Gyr)	---	---	---	---	---	---	3.40+1.04-2.00	---	---	---	---	---	---	6	---
Sp. T	---	---	---	---	---	---	---	---	---	---	---	---	---	G2 V	G0
γ (km/s)	---	---	---	---	-69.22800020499653±0.12698444289806	---	---	---	-69.0	---	-69.7±0.2	---	-69.5±0.1	---	---
L_✶ (log₁₀(L_⦿))	---	---	---	0.21960155+0.01266858-0.01266633	0.22183596+0.00185525-0.00186321	---	---	---	---	---	---	---	---	---	---
ρ_✶ (g/cm³)	---	---	---	0.7711933+0.1383479-0.1478259	---	---	---	---	---	---	---	---	---	---	---

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HD 68988 b Planetary Parameters (5 Solutions)

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Status: Confirmed Planet

Detected By: Astrometry, Radial Velocity

Tools: Planetary Systems

Source	Stassun et al. 2017	An et al. 2025	Rosenthal et al. 2021	Butler et al. 2006	Vogt et al. 2002
M_p sin i (M_⨁)	626±32	626.8+22.2-24.8	608.3+16.8-17.2	591±51	604
M_p sin i (M_Jup)	1.97±0.10	1.972+0.070-0.078	1.914+0.053-0.054	1.86±0.16	1.9
e	0.12±0.01	0.1533+0.0049-0.0048	0.1581+0.0027-0.0031	0.1249±0.0087	0.14±0.03
i (deg)	---	83.0+30.0-28.0	---	---	---
P (days)	6.27711±0.00021	6.2764169±0.0000124	6.2764187+0.0000082-0.0000078	6.27711±0.00021	6.276±0.002
a (au)	0.070±0.000	0.0710+0.0012-0.0014	0.07020+0.00097-0.00099	0.0704±0.0041	0.071
K (m/s)	184.7±3.7	---	192.20+0.61-0.63	184.7±3.7	187±6
T_p (days)	---	---	---	2451548.84±0.16	2451913.0±0.2
ω (deg)	---	---	40.4+1.1-1.0	31.4±3.5	186±8
T_C (days)	---	---	2451549.717+0.005-0.006 (BJD)	---	---

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HD 68988 c Planetary Parameters (2 Solutions)

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Status: Confirmed Planet

Detected By: Astrometry, Radial Velocity

Tools: Planetary Systems

Source	Rosenthal et al. 2021	An et al. 2025
ω (deg)	-7.4484540+2.1199446-2.4637194	---
M_p sin i (M_⨁)	4767+890-477	---
M_p sin i (M_Jup)	15.0+2.8-1.5	---
e	0.450+0.130-0.081	0.399+0.046-0.049
P (days)	16000+11000-3500	13900+1936-1790
K (m/s)	121.0+13.0-7.3	---
a (au)	13.2+5.3-2.0	12.1±1.1
T_C (days)	2451660+110-180 (BJD)	---
M_p (M_⨁)	---	4777+286-238
M_p (M_Jup)	---	15.03+0.90-0.75
i (deg)	---	93.0+19.0-23.0

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Ancillary Information (5 Unique Files)

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+ HD 68988 (3 File Types, 5 Files)

Literature Time Series (3 File Types, 5 Files)

File Type	Data Points	Filter	Reference
Photometric Light Curve	148	Hp (Hipparcos)	Hipparcos and Tycho Catalogs
Radial Velocity Curve	28	Optical Spectra	Butler et al. 2006
Radial Velocity Curve	13	Optical Spectra	Vogt et al. 2002
Radial Velocity Curve	6	Optical Spectra	Vogt et al. 2002
Amateur Light Curve	132	R (Generic)	Amateur-Contributed Light Curves

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

Data Files: 1 SuperWASP Time Series; 2 Associated Literature Data

Bibliography (19 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 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
All WISE Data Release
Cutri et al. 2014 Reference Overview
Exoplanet Archive Help: Amateur Light Curves
Amateur-Contributed Light Curves
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
Catalog of Nearby Exoplanets
Butler 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
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
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
Ten Low-Mass Companions from the Keck Precision Velocity Survey
Vogt et al. 2002 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
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_68988.json

Catalog Parameters

RA

ra

08h18m22.45s

Dec

dec

+61d27m39.07s

β

elat

40.50824

λ

elon

110.8974

b

glat

33.91958

l

glon

155.26292

m_V

sy_vmag

8.20±0.03

m_TESS

sy_tmag

7.6263±0.0060

m_J

sy_jmag

7.060±0.021

m_H

sy_hmag

6.812±0.020

m_Ks

sy_kmag

6.743±0.024

sy_kepmag

no_data

m_W1

sy_w1mag

6.715±0.072

m_W2

sy_w2mag

6.710±0.022

m_W3

sy_w3mag

6.756±0.015

m_W4

sy_w4mag

6.708±0.067

sy_icmag

no_data

m_Gaia

sy_gaiamag

8.046110±0.000385

m_B

sy_bmag

8.838±0.025

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

μ

sy_pm

131.8506008±0.0725237

μ_δ

sy_pmdec

30.2696000±0.0590152

μ_α

sy_pmra

128.3290000±0.0732021

π

sy_plx

16.4066000±0.0512603

Distance

sy_dist

60.8447+0.1918-0.1906

Set Parameters

R_✶

st_rad

1.19±0.02

T_eff

st_teff

5988±52

HD 68988 Overview

HD 68988 Architecture & Discovery Information

HD 68988