This page summarises the information held within TEPCat for the transiting planetary system AU Mic b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2020Natur.582..497P | |
| Date of discovery paper | 2020 / 6 / 25 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 20 45 09.53 | h m s |
| Declination | −31 20 27.2 | d m s |
| Right ascension (decimal) | 311.28971 | degrees |
| Declination (decimal) | -31.34089 | degrees |
| V-band apparent magnitude | 8.63 | mag |
| K-band apparent magnitude | 4.53 | mag |
| Transit duration | 0.145 ( 3.48 ) | day hour |
| Transit depth | 0.3 | % |
| Time of mid-transit | 2460149.9550 ± 0.0012 | HJD or BJD |
| Orbital period | 8.46314280 ± 0.0000049 | days |
| Reference for orbital ephemeris | 2025A+A...694A.137B |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3540 +120 −110 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.01 ± 0.06 | dex |
| Stellar mass | 0.635 +0.040 −0.070 | Msun |
| Stellar radius | 0.862 ± 0.052 | Rsun |
| Stellar logarithmic surface gravity | 4.37 +0.08 −0.10 | c.g.s. |
| Stellar mean density | 1.106 +0.099 −0.085 ( 1.56 +0.14 −0.12 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.07 +0.09 −0.04 | |
| Orbital semimajor axis | 0.0694 +0.0027 −0.0023 | AU |
| Planetary mass | 0.0283 +0.0082 −0.0084 ( 9.0 +2.6 −2.7 ) | Mjup Mearth |
| Planetary radius | 0.412 ± 0.013 ( 4.62 ± 0.15 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.37 ± 0.12 ( 0.49 ± 0.16 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 556 +8 −9 | K |
| Reference of detailed study | 2025A+A...694A.137B |
| Reference | λ (degrees) |
|---|---|
| Hirano et al. (2020) | −4.7 + 6.8 - 6.4 |
| Martioli et al. (2021) | −0.1 + 5.1 - 5.0 |
| Palle et al. (2020) | −3.0 + 10.4 - 10.3 |
| Addison et al. (2021) | 5 + 16 - 15 |
Page generated on 2025/04/12 John Southworth (Keele University, UK)