Planet NN Ser (AB)d

Detailed information about planet NN Ser (AB)d and its parameters.

Planet

Name
NN Ser (AB)d
Planet Status
Confirmed
Discovered in
2009
Update
2024-08-12
Mass
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Detection Method
Timing
Mass Meas. Method
Radius Meas. 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
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

28 Jan 2014: Based on dynamical considerations of orbital stability, Horner et al. (2014) cast doubt on the planet candidates NN Ser (AB) b and c.
13 Oct 2010: An alternate model with a similar chi^2 gives Mc = 1.60 MJ, Pc = 6.69 yr and ac = 3.07 AU (Beuermann et al. 2010)
13 Oct 2010: For the planet designation, I follow the Beuermann et al. (2010) convention, NN Ser ab being, after the recommendation of the Editor of Astronomy and Astrophysics, the name of the parent binary star.
3 Nov. 2009: Given the O-C curve (Fig 2) of Qian et al 2009, the planet is only marginally significant.
See also Circumbinary Planets webpage.

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Star

Name
NN Ser (AB)
Distance
Spectral type
DAO1+M4V
Apparent magnitude V
16.6
Mass
Age
Effective temperature
Radius
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000
15:52:56.0
Dec2000
+12:54:47.0
Alternate Names

3 Nov. 2009: The parent star is a white dwarf + M binary with period 3.12 hr and masses 0.535 and 0.111 MSun respectively

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