Planet NN Ser (ab) d
| Name | NN Ser (ab) d | |
| Discovered in | 2009 | |
| M × sin i | 2.28 ± 0.38 MJ |  |
| Semi-major axis | 3.39 ± 0.1 AU | |
| Orbital period | 2830 ± 130 days | |
| Eccentricity | 0.2 ± 0.02 | |
| ω | 74 ± 4 | |
| Tperi | 2.45452e+06 | |
| Radius | — | |
| Inclination | — | |
| Update | Oct. 13, 2010 | |
| Detection method | pulsar | |
| Molecules detected | — |
Remarks
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.
Star
| Name | NN Ser (ab) | |
| Distance | 500 pc | |
| Spectral type | WD+M | |
| Apparent magnitude V | 16.6 | |
| Mass | 0.646 MSun | |
| Age | Gyr | |
| Effective temperature | K | |
| Radius | RSun | |
| Metallicity [Fe/H] | ||
| RA2000 | 15:52:56.0 | |
| Dec2000 | +12:54:47 | |
| Planetary system | 2 planets |
More data
- Simbad
- Most recent references (ADS)
Related publications
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
A Uniformly Derived Catalogue of Exoplanets from Radial Velocities
Feb. 10, 2012
HOLLIS M., BALAN S., LEVER G. & LAHAV O.
MNRAS
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 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