This page summarises the information held within TEPCat for the transiting planetary system HD 207897. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2022A+A...658A.176H | |
| Date of discovery paper | 2021 / 10 / 19 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 21 40 44.78 | h m s |
| Declination | +84 20 00.6 | d m s |
| Right ascension (decimal) | 325.18658 | degrees |
| Declination (decimal) | 84.33350 | degrees |
| V-band apparent magnitude | 8.37 | mag |
| K-band apparent magnitude | 6.31 | mag |
| Transit duration | 0.1213 ( 2.911 ) | day hour |
| Transit depth | 0.09 | % |
| Time of mid-transit | 2458926.10942 ± 0.00048 | HJD or BJD |
| Orbital period | 16.202159 ± 0.000084 | days |
| Reference for orbital ephemeris | 2022A+A...658A.176H |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5070 +60 −57 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.21 ± 0.02 | dex |
| Stellar mass | 0.800 +0.036 −0.030 | Msun |
| Stellar radius | 0.779 +0.019 −0.018 | Rsun |
| Stellar logarithmic surface gravity | 4.559 +0.026 −0.052 | c.g.s. |
| Stellar mean density | 1.69 ± 0.13 ( 2.38 ± 0.18 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.047 +0.057 −0.033 | |
| Orbital semimajor axis | 0.1163 +0.0017 −0.0015 | AU |
| Planetary mass | 0.0453 ± 0.0050 ( 14.4 ± 1.6 ) | Mjup Mearth |
| Planetary radius | 0.2231 +0.0073 −0.0070 ( 2.501 +0.082 −0.078 ) | Rjup Rearth |
| Planetary surface gravity | 22.5 +2.9 −2.7 3.35 +0.05 −0.06 | m/s2 log(cgs) |
| Planetary mean density | 3.81 +0.58 −0.52 ( 5.05 +0.77 −0.69 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 632 +8 −7 | K |
| Reference of detailed study | 2022A+A...658A.176H |
HD 207897 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)