This page summarises the information held within TEPCat for the transiting planetary system HD 101581b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2025AJ....169...47K | |
| Date of discovery paper | 2024 / 12 / 13 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 11 41 01.48 | h m s |
| Declination | −44 24 14.8 | d m s |
| Right ascension (decimal) | 175.25617 | degrees |
| Declination (decimal) | -44.40411 | degrees |
| V-band apparent magnitude | 7.77 | mag |
| K-band apparent magnitude | 5.10 | mag |
| Transit duration | 0.074 ( 1.78 ) | day hour |
| Transit depth | 0.02 | % |
| Time of mid-transit | 2460014.8496 ± 0.0026 | HJD or BJD |
| Orbital period | 4.46569 ± 0.00031 | days |
| Reference for orbital ephemeris | 2025AJ....169...47K |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4634 ± 143 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.505 ± 0.027 | dex |
| Stellar mass | 0.653 ± 0.028 | Msun |
| Stellar radius | 0.630 ± 0.027 | Rsun |
| Stellar logarithmic surface gravity | 4.654 ± 0.057 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | ||
| Orbital semimajor axis | 0.0460 ± 0.0007 | AU |
| Planetary mass | Mjup Mearth | |
| Planetary radius | 0.0853 +0.0054 −0.0056 ( 0.956 +0.061 −0.063 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 834 ± 23 | K |
| Reference of detailed study | 2025AJ....169...47K |
HD 101581b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/24 John Southworth (Keele University, UK)