Planet HD 219134 g

Name HD 219134 g
Planet Status Confirmed
Discovered in 2015
Mass 0.034 ( -0.004 +0.004 ) MJ
Mass*sin(i) 0.034 ( -0.004 +0.004 ) MJ
Semi-Major Axis 0.3753 (± 0.0004) AU
Orbital Period 94.2 (± 0.2) day
Eccentricity 0.0
ω
Tperi 2449972.0 (± 5.0) JD
Radius
Inclination
Update 2015-11-17
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
Radius Detection Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 1.8 (± 0.2) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

HD 219134
Name HD 219134
Distance 6.55 pc
Spectral type K3V
Apparent magnitude V 5.57
Mass
Age
Effective temperature 4699.0 (± 16.0) K
Radius 0.778 (± 0.005) RSun
Metallicity [Fe/H] 0.11 (± 0.04)
Detected Disc
Magnetic Field
RA2000 23:13:17.0
Dec2000 +57:10:06
Alternate Names
Planetary system
6 planets

More data

Observability Predictor

Remarks

17 Nov 2015: The names an characteristics of planets HD 219134 d, e, f, g and h raise two specific problems since there are two papers: Motalebi et al. 2015 and Vogt et al. 2015 with different sets of parameters. We adopt the following solution, at least provisionally:
- names: The standard rule is two give names NNN b, c, d etc by order of discovery, the criterion being the date of submission of a paper. The Motalebi et al paper has been submitted on June 24th 2015, the Vogt et al. paper on July 17th 2015. The four Motalebi planets are there fore named b, c, d and e and the new Vogt planets named f, g and h.
- parameter values: The Vogt et al. planet data are based on 276 observation points while the Motalebi et al data are based on 98 data points. We therefore adopt Vogt et al. values for all planet.
- remark: It is not impossible that more data will change this situation. In particular HD 219134 e and h may merge in a single object.

Related publications

Characterisation of the HD 219134 multi-planet system I. Observations of stellar magnetism, wind, and high-energy flux
2018 FOLSOM, C., FOSSATI, L., WOOD, B. SREEJITH, A., CUBILLOS, P. et al.
MNRAS, 481, 5286
paper   arxiv  ADS  

Characterisation of the HD219134 multi-planet system II. Stellar-wind sputtered exospheres in rocky planets b & c
2018 VIDOTTO, A., LICHTENEGGER, H., FOSSATI, L. FOLSOM, P. WOOD, B. et al.
MNRAS, 481, 5296
paper  arxiv  ADS  

Two massive rocky planets transiting a K-dwarf 6.5 parsecs away
2017 GILLON M., DEMORY B.-O., VAN GROOTEL V., MOTALEBI F., LOVIS Ch. et al.
Nature Astronomy, 1, 0056
paper  arxiv   ADS

A 12-Year Activity Cycle for the Nearby Planet Host Star HD 219134
2016 JOHNSON M., ENDL M., COCHRAN W., MESCHIARI S., ROBERTSON P. et al.
ApJ, 821, 74
paper  arxiv  ADS  

A Six-Planet System Orbiting HD 219134
2015 VOGT S., BURT J., MESCHIARI S., BUTLER P., HENRY G. et al.
ApJ, 814, 12
paper  arxiv  ADS  

The HARPS-N Rocky Planet Search I. HD219134b: A transiting rocky planet in a multi-planet system at 6.5 pc from the Sun
2015 MOTALEBI, F., UDRY, S., GILLON, M.. LOVIS, SEGRANSAN & 34 additional authors
Astron. & Astrophys., 584, A72
paper  arxiv  ADS  

Probable Spin–Orbit Aligned Super-Earth Planet Candidate KOI2138
2015 BARNES J., AHLERS J. SEUBERT S. & RELLES R.
ApJ, 808, L38
paper  arxiv   ADS