This page summarises the information held within TEPCat for the transiting planetary system K2-261. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019MNRAS.483.1970B | |
| Date of discovery paper | 2018 / 6 / 12 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 10 52 07.78 | h m s |
| Declination | +00 29 36.1 | d m s |
| Right ascension (decimal) | 163.03242 | degrees |
| Declination (decimal) | 0.49336 | degrees |
| V-band apparent magnitude | 10.61 | mag |
| K-band apparent magnitude | 8.89 | mag |
| Transit duration | 0.23 ( 5.5 ) | day hour |
| Transit depth | 0.3 | % |
| Time of mid-transit | 2458151.14394 ± 0.00028 | HJD or BJD |
| Orbital period | 11.6334681 ± 0.0000044 | days |
| Reference for orbital ephemeris | 2023AJ....165..155T |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5513 ± 51 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.26 ± 0.03 | dex |
| Stellar mass | 1.105 ± 0.019 | Msun |
| Stellar radius | 1.669 +0.022 −0.021 | Rsun |
| Stellar logarithmic surface gravity | 4.032 ± 0.015 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.42 ± 0.03 | |
| Orbital semimajor axis | 0.10376 +0.00043 −0.00051 | AU |
| Planetary mass | 0.179 ± 0.021 ( 56.9 ± 6.7 ) | Mjup Mearth |
| Planetary radius | 0.840 ± 0.011 ( 9.42 ± 0.12 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.28 ± 0.04 ( 0.371 ± 0.053 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1066 +11 −13 | K |
| Reference of detailed study | 2019MNRAS.483.1970B |
K2-261 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/04 John Southworth (Keele University, UK)