This page summarises the information held within TEPCat for the transiting planetary system HR 858b. 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 | 0.1127 ( 2.705 ) | day hour |
| Transit depth | 0.02 | % |
| Time of mid-transit | 2458409.1900 ± 0.0012 | HJD or BJD |
| Orbital period | 3.585287 ± 0.000011 | 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 +0.30 −0.00 | |
| Orbital semimajor axis | 0.04888 ± 0.00066 | AU |
| Planetary mass | 0.0112 ± 0.0030 ( 3.56 ± 0.95 ) | Mjup Mearth |
| Planetary radius | 0.1788 +0.0040 −0.0042 ( 2.004 +0.045 −0.047 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.84 ± 0.52 ( 2.44 ± 0.69 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1552 +22 −23 | K |
| Reference of detailed study | 2025A+A...693A..90B |
HR 858b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/12 John Southworth (Keele University, UK)