Planet tau Boo A b

Detailed information about planet tau Boo A b and its parameters.

Planet

Name
tau Boo A b
Planet Status
Confirmed
Discovered in
1996
Publication
Status
Published in a refereed paper
Update
2023-08-07
Mass
5.84 ( +0.99 -0.55 ) MJ
Mass*sin(i)
Semi-Major Axis
Orbital Period
Eccentricity
Angular distance
0.002949 arcsec
ω
Tperi
Radius
Inclination
Detection Method
Radial Velocity
Mass Meas. Method
Radius Meas. Method
Theoretical
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
tau Boö b
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference
CO
Measurements Detected 2021 - PELLETIER S.
H2O
Measurements Detected Controversial (see Pelletier et al. 2021) 2014 - LOCKWOOD A.
Measurements Detected not detected 2021 - PELLETIER S.

  1. 10 Apr. 09: RV measurements with amateur spectrograph (Christian Buil).
  2. 10 sep. 03: New upper limit of 0.39 for the reflection albedo (Leigh et al 2003)
  3. 20 apr. 03: Planet in wide (a ~ 240 AU) binary system (Eggenberger et al 2003)
  4. 22 spt. 2000: the planet not so bright as previously announced (Cameron et al).
  5. Exhibits coherent variations in residual velocities consistent with additional companion.
    24 Jul. 00: the source of RV variation remains speculative, depending on completion of one full orbit (Fischer et al 2000).
  6. `Probable detection' of the reflected star-light by the planet (Cameron et. al, 1999). The albedo is claimed to be detected only from 456 to 524 nm.
  7. The star has a companion ( GJ 527B) about 240 AU away.

Star

Name
tau Boö A
Distance
15.6 ( ± 0.05 ) pc
Spectral type
F7 V
Apparent magnitude V
4.5
Apparent magnitude I
Apparent magnitude J
Apparent magnitude H
Apparent magnitude K
Mass
Age
Effective temperature
Radius
Metallicity [Fe/H]
Detected Disc
Magnetic Field
RA2000
13:47:17.0
Dec2000
+17:27:22.0
Alternate Names
tau Boö

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