This page summarises the information held within TEPCat for the transiting planetary system LTT 1445Ac. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2022AJ....163..168W | |
| Date of discovery paper | 2021 / 8 / 2 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 03 01 51.39 | h m s |
| Declination | −16 35 36.1 | d m s |
| Right ascension (decimal) | 45.46413 | degrees |
| Declination (decimal) | -16.59336 | degrees |
| V-band apparent magnitude | 11.22 | mag |
| K-band apparent magnitude | 6.50 | mag |
| Transit duration | 0.02120 ( 0.5088 ) | day hour |
| Transit depth | 0.1 | % |
| Time of mid-transit | 2458412.58194 ± 0.00058 | HJD or BJD |
| Orbital period | 3.1238999 ± 0.0000035 | days |
| Reference for orbital ephemeris | arXiv:2307.02970 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3337 ± 150 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.34 ± 0.08 | dex |
| Stellar mass | 0.257 ± 0.014 | Msun |
| Stellar radius | 0.270 ± 0.010 | Rsun |
| Stellar logarithmic surface gravity | 4.983 +0.044 −0.045 | c.g.s. |
| Stellar mean density | 13.0 +2.0 −1.7 ( 18.3 + 2.8 − 2.4 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.110 −0.0 | |
| Orbital semimajor axis | 0.02658 +0.00047 −0.00049 | AU |
| Planetary mass | 0.0043 ± 0.0006 ( 1.37 ± 0.19 ) | Mjup Mearth |
| Planetary radius | 0.0981 +0.0089 −0.0062 ( 1.100 +0.100 −0.069 ) | Rjup Rearth |
| Planetary surface gravity | 11.4 +1.2 −1.0 3.06 +0.04 −0.04 | m/s2 log(cgs) |
| Planetary mean density | 4.2 +1.3 −1.1 ( 5.6 +1.7 −1.5 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 508 ± 25 | K |
| Reference of detailed study | arXiv:2307.02970 |
LTT 1445Ac does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/01/29 John Southworth (Keele University, UK)