This page summarises the information held within TEPCat for the transiting brown dwarf system TOI-503. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2020AJ....159..151S | |
| Date of discovery paper | 2019 / 9 / 19 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 08 17 16.89 | h m s |
| Declination | +12 36 04.8 | d m s |
| Right ascension (decimal) | 124.32037 | degrees |
| Declination (decimal) | 12.60133 | degrees |
| V-band apparent magnitude | 9.70 | mag |
| K-band apparent magnitude | 8.90 | mag |
| Transit duration | 0.07 ( 1.7 ) | day hour |
| Transit depth | 0.4 | % |
| Time of mid-transit | 2458492.05297 ± 0.00019 | HJD or BJD |
| Orbital period | 3.6773554 ± 0.0000006 | days |
| Reference for orbital ephemeris | arXiv:2505.21270 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 7650 +140 −160 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.30 +0.08 −0.09 | dex |
| Stellar mass | 1.80 ± 0.06 | Msun |
| Stellar radius | 1.70 +0.05 −0.04 | Rsun |
| Stellar logarithmic surface gravity | 4.23 ± 0.03 | c.g.s. |
| Stellar mean density | 0.36 +0.03 −0.04 ( 0.508 +0.042 −0.056 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.05727 ± 0.00063 | AU |
| Planetary mass | 53.7 ± 1.2 ( 170707 ± 3815 ) | Mjup Mearth |
| Planetary radius | 1.34 +0.26 −0.15 ( 15.0 + 2.9 − 1.7 ) | Rjup Rearth |
| Planetary surface gravity | 741 +236 −240 4.9 +0.1 −0.2 | m/s2 log(cgs) |
| Planetary mean density | 20.4 +9.8 −8.3 ( 27 +12 −11 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 2011 +27 −28 | K |
| Reference of detailed study | 2020AJ....159..151S |
TOI-503 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/11/11 John Southworth (Keele University, UK)