Planet NSVS 1425 (AB) b

Name NSVS 1425 (AB) b
Planet Status Controversial
Discovered in 2012
Mass 2.8 ( -0.3 +0.3 ) MJ
Mass*sin(i)
Semi-Major Axis 1.9 (± 0.3) AU
Orbital Period 1276.0 (± 77.0) day +
Eccentricity 0.0 (± 0.08)
ω 11.4 (± 7.0) deg
Tperi
Radius
Inclination
Update 2017-01-20
Detection Method Other
Mass Detection Method
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

NSVS 1425 (AB)
Name NSVS 1425 (AB)
Distance
Spectral type sdOB+dM
Apparent magnitude V 13.2
Mass 0.528 (± 0.07) MSun +
Age
Effective temperature 42000.0 K
Radius
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000 20:20:00.0
Dec2000 +04:37:57
Alternate Names
Planetary system 1 planet

Remarks

Alias 2MASS J20200045+0437564

The parent star is an eclipsing binary with a period of 0.110374 day
The adopted mass is the sum of the two components masses (Almeida et al. 2012)

More data

Observability Predictor

Remarks

20 Jan 2017 : According to new data by Nasiroglu et al (2017), the planet NSVS 1425 (AB) d replaces the unconfirmed planets NSVS 1425 (AB) b and c. We provisionnaly name it NSVS 1425 (AB) d.
The candidate designated by "c" in Almeida et al. (2012) is designated here as "b", according to the homogeneity convention proposed by Schneider et al; (2012).

19 Feb 2012: A planetary system with the orbital parameter given by Almeida et al. (2012) would be unstable (Wittenmyer et al). More observations are needed.
28 Feb 2012: Beuermann et al. (2012) see a secondary eclipse at phase 0.5002 ± 0.0002.


Related publications

Is there a circumbinary planet around NSVS 14256825?
2017 NASIROGLU L., GOZDZIEWSKI K., SLOWIKOWSKA A., KRZESZOWSKI K., ZEJMO M. et al.
Astron. J., 153, 137
paper  arxiv  ADS

First versus second generation planet formation in post common envelope binary (PCEB) planetary systems
2014 BEAR E. & SOKER N.
MNRAS, 444, 1698
paper  arxiv 

On the dynamical stability of the proposed planetary system orbiting NSVS 14256825
2013 WITTENMYER R., HORNER J. & MARSHALL J.
MNRAS, in press
paper  arxiv  

Revisiting the proposed circumbinary multi-planet system NSVS14256825
2013 HINSE T., LEE J., GOZDZIEWSKI K., HORNER J. & WITTENMYER R.
MNRAS, in press
paper  arxiv  

Two possible circumbinary planets in the eclipsing post-common envelope system NSVS 14256825
2012 ALMEIDA L., JABLONSKI F. & RODRIGUES C.
ApJ, 766, 11
paper  arxiv  

A photometric and spectroscopic study of NSVS 14256825: the second sdOB+dM eclipsing binary
2012 ALMEIDA L., JABLONSKI F., TELLO J. & RODRIGUES C.,
MNRAS, 423, 478
paper   arxiv

The quest for companions to post-common envelope binaries. II. NSVS14256825 and HS0705+6700
2012 BEUERMANN K., BREITENSTEIN P., DBEBSKI B., DIESE J., DUBOVSKY A. & 18 additional authors
Astron. & Astrophys.
arxiv