Planet NN Ser (ab) c

Name NN Ser (ab) c
Discovered in 2010
M × sin i 6.91 (± 0.54) MJ
Semi-major axis 5.38 (± 0.2) AU
Orbital period 5660.0 (± 165.0) day
Eccentricity
ω
Tperi
Radius
Inclination
Update Oct. 13, 2010
Detection method pulsar
Molecules detected
Primary transit
Secondary transit
Anomaly angle
Time Vr=0
Calculated temperature
Measured temperature
Hottest point longitute
Surface gravity log(g/gH)

Remarks

28 Jan 2014: Based on dynamical considerations of orbital stability, Orner 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 = 5.92 MJ, Pc = 16.73 yr and ac = 5.66 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.

Star

Name NN Ser (ab)
Distance 500.0 pc
Spectral type WD+M
Apparent magnitude V 16.6
Mass 0.646 MSun
Age
Effective temperature
Radius
Metallicity [Fe/H]
RA2000 15:52:56.0
Dec2000 +12:54:47
Planetary system 2 planets

Remarks

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

More data


Related publications

First versus second generation planet formation in post common envelope binary (PCEB) planetary systems
March 21, 2014 BEAR E. & SOKER N.
MNRAS, submitted
arxiv 

Planet formation from the ejecta of common envelopes
March 7, 2014 SCHLEICHER D. & DREIZLER S.
Astron. & Astrophys., 563, A61
paper  arxiv  

Second generation planet formation in NN Serpentis?
Jan. 31, 2014 VÖLSHOW M., BANERJEE R. & HESSMAN F.
Astron. & Astrophys., 562, A19
paper  arxiv  

Wobbling Ancient Binaries - Here Be Planets?
Jan. 28, 2014 HORNER J., WITTENMYER R., HINSE T., MARSHALL J. & MUSTILL A.
in "13th annual Australian Space Science Conference" , accepted
arxiv 

Timing variations in the secondary eclipse of NN Ser
Dec. 13, 2013 PARSONS S., MARSH T., BOURS M., LITTLEFAIR S., COPPERWHEAT C. & 4 additional authors
MNRAS, in press
paper  arxiv 

The planets around NN Ser: still there
Oct. 8, 2013 MARH T., PARSONS S., BOURS M., LITTLEFAI S., COPPERWHEAT C. & 4 additional authors
MNRAS, accepted
arxiv  

The quest for companions to post-common envelope binaries IV: The 2:1 mean-motion resonance of the planets orbiting NN Serpentis
July 12, 2013 BEUERMANN K., DREIZLER S. & HESSMAN F.
Astron. & Astrophys., 555, A133
paper  arxiv  

A Detailed Investigation of the Proposed NN Serpentis Planetary System
Aug. 21, 2012 HORNER J., WITTENMYER R., HINSE T. & TINNEY Ch.
MNRAS, 425, 749
paper   arxiv

The Exoplanet Handbook
May 22, 2012 Michael Perryman
Content
Content and Chapter 5

Defining and cataloging exoplanets: The exoplanet.eu database
Aug. 1, 2011 SCHNEIDER J., DEDIEU C., LE SIDANER P., SAVALLE R. & ZOLOTUKHIN I.
Astron. & Astrophys., 532, A79
paper   arxiv

Density Estimation for Projected Exoplanet Quantities
May 6, 2011 BROWN R.
ApJ., 733, 68
paper

The Exoplanet Orbit Database
April 23, 2011 WRIGHT J., FAKHOURI O., MARCY G., HAN E., FENG Y., JOHNSON A., HOWARD A., VALENTI J., ANDERSON J. & PISKUNOV N.
PASP, 123, 412
paper   arxiv

The Planets around the Post-Common Envelope Binary NN Serpentis
Feb. 3, 2011 HESSMAN, BEUERMANN K., DREIZLER S., MARSH T., PEARSON S. & 8 additional authors
arxiv

Two planets orbiting the recently formed post-common envelope binary NN Serpentis
Oct. 21, 2010 BEUERMANN K., HESSMAN F., DREIZLER S., MARSH T., PARSONS S. & 8 additional authors
Astron. & Astrophys., 521, L60
paper