This page summarises the information held within TEPCat for the transiting planetary system AU Mic c. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2021A+A...649A.177M | |
| Date of discovery paper | 2020 / 12 / 26 | 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 | 0.155 ( 3.72 ) | day hour |
| Transit depth | 0.2 | % |
| Time of mid-transit | 2460133.8718 ± 0.0085 | HJD or BJD |
| Orbital period | 18.858827 ± 0.000050 | 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 | 0.18 +0.08 −0.07 | |
| Orbital semimajor axis | 0.1169 ± 0.0047 | AU |
| Planetary mass | 0.0455 +0.0102 −0.0108 ( 14.5 +3.2 −3.4 ) | Mjup Mearth |
| Planetary radius | 0.246 +0.023 −0.026 ( 2.76 +0.26 −0.29 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 2.94 +0.86 −0.88 ( 3.9 +1.1 −1.2 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 428 ± 8 | K |
| Reference of detailed study | 2025A+A...694A.137B |
| Reference | λ (degrees) |
|---|---|
| Yu et al. (2025) | 68 + 32 - 49 |
Page generated on 2025/03/17 John Southworth (Keele University, UK)