Planet V4046 Sgr (AB)b

Detailed information about planet V4046 Sgr (AB)b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

V4046 Sgr (AB)b

Planet Status

Candidate

Discovered in

2019

Publication Status

Published in a refereed paper

Update

2025-08-19

Mass

0.9 (\pm 0.6)

M_J 2 publications

The steady-state hydrodynamics of a long-lived disc: planetary system architecture and prospects of observing a circumplanetary disc shadow in V4046Sgr
Constraints on a Putative Planet Sculpting the V4046 Sagittarii Circumbinary Disk

Mass*sin(i)

—

Semi-Major Axis

20.0 AU 2 publications

The steady-state hydrodynamics of a long-lived disc: planetary system architecture and prospects of observing a circumplanetary disc shadow in V4046Sgr
Constraints on a Putative Planet Sculpting the V4046 Sagittarii Circumbinary Disk

Orbital Period

—

Eccentricity

—

Angular distance

—

ω

—

T_peri

—

Radius

—

Inclination

—

Detection Method

Other

Mass Meas. Method

Theoretical

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

HD 319139 (AB)b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

Ruiz-Rodriguez et al. (2019): An inner ring may indicate the presence of a second circumbinary planet in the system, interior to 15 au.
Weber et al. (2022) deem very likely the presence of two planets at 9 and 20 AUs.

No link

Star

Name

V4046 Sgr (AB)

Distance

71.48 (\pm 0.11)

pc 1 publication

High-resolution ALMA observations of V4046 Sgr: a circumbinary disc with a thin ring

Spectral type

K5+K7

Apparent magnitude V

10.7

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.75 (\pm 0.09)

M_Sun 1 publication

High-resolution ALMA observations of V4046 Sgr: a circumbinary disc with a thin ring

Age

0.018 (\begin{matrix} + 0.002 \\ - 0.0024 \end{matrix})

Gyr 1 publication

High-resolution ALMA observations of V4046 Sgr: a circumbinary disc with a thin ring

Effective temperature

4350.0 K 1 publication

High-resolution ALMA observations of V4046 Sgr: a circumbinary disc with a thin ring

Radius

1.064 R_Sun 1 publication

High-resolution ALMA observations of V4046 Sgr: a circumbinary disc with a thin ring

Metallicity [Fe/H]

—

Detected Disc

Imaging

Magnetic Field

—

RA₂₀₀₀

18:14:10.0

Dec₂₀₀₀

-32:47:34.0

Alternate Names

HD 319139

Eclipsing binary (P = 2.42 d) with m₁ = 0.9 ± 0.05 M_Sol, r₁ = 1.64 R_Sol, T₁ = 4350 K and m₂ = 0.85 ± 0.04 M_Sol, r₂ = 1.033 R_Sol, T₂ = 4060 K. Separation about 0.041 AUs.
A massive (0.1 M_Sol), 300 AU-wide circumbinary disk with gaps and rings shaped by forming planets surrounds the close binary (Martinez-Brunner et al. 2022).
V4046 Sgr is also part of a triple or quadruple system including GSC 07396-00759 (spT M1e), about 2.82 arcseconds away (~12,350 AUs), itself likely spectroscopic binary with nearly equal components and it too hosting an edge-on debris disk as large as 70 AUs (Kastner et al. 2011).