This page summarises the information held within TEPCat for the transiting planetary system HR 858c. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019ApJ...881L..19V | |
| Date of discovery paper | 2019 / 5 / 14 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 02 51 56.25 | h m s |
| Declination | −30 48 52.3 | d m s |
| Right ascension (decimal) | 42.98438 | degrees |
| Declination (decimal) | -30.81453 | degrees |
| V-band apparent magnitude | 6.38 | mag |
| K-band apparent magnitude | 5.15 | mag |
| Transit duration | 0.1185 ( 2.844 ) | day hour |
| Transit depth | 0.02 | % |
| Time of mid-transit | 2458415.63344 ± 0.00096 | HJD or BJD |
| Orbital period | 5.973865 ± 0.000016 | days |
| Reference for orbital ephemeris | 2025A+A...693A..90B |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6354 ± 70 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.025 ± 0.050 | dex |
| Stellar mass | 1.204 ± 0.052 | Msun |
| Stellar radius | 1.258 ± 0.019 | Rsun |
| Stellar logarithmic surface gravity | 4.30 ± 0.06 | c.g.s. |
| Stellar mean density | 0.605 ± 0.038 ( 0.854 ± 0.054 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.00 +0.19 −0.00 | |
| Orbital semimajor axis | 0.06870 ± 0.00092 | AU |
| Planetary mass | 0.0028 +0.0030 −0.0029 ( 0.89 +0.95 −0.92 ) | Mjup Mearth |
| Planetary radius | 0.1766 ± 0.0045 ( 1.980 ± 0.050 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.49 +0.51 −0.34 ( 0.65 +0.68 −0.45 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1309 ± 19 | K |
| Reference of detailed study | 2025A+A...693A..90B |
HR 858c does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/24 John Southworth (Keele University, UK)