This page summarises the information held within TEPCat for the transiting planetary system HD 219666. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019A+A...623A.165E | |
| Date of discovery paper | 2018 / 12 / 17 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 23 18 13.63 | h m s |
| Declination | −56 54 14.0 | d m s |
| Right ascension (decimal) | 349.55679 | degrees |
| Declination (decimal) | -56.90389 | degrees |
| V-band apparent magnitude | 9.90 | mag |
| K-band apparent magnitude | 8.16 | mag |
| Transit duration | 0.0899 ( 2.158 ) | day hour |
| Transit depth | 0.17 | % |
| Time of mid-transit | 2458329.1996 ± 0.0012 | HJD or BJD |
| Orbital period | 6.034460 ± 0.000011 | days |
| Reference for orbital ephemeris | 2019RNAAS...3..156H |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5527 ± 65 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.04 ± 0.04 | dex |
| Stellar mass | 0.92 ± 0.03 | Msun |
| Stellar radius | 1.03 ± 0.03 | Rsun |
| Stellar logarithmic surface gravity | 4.40 ± 0.11 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0636 ± 0.0027 | AU |
| Planetary mass | 0.0522 ± 0.0041 ( 16.6 ± 1.3 ) | Mjup Mearth |
| Planetary radius | 0.420 ± 0.015 ( 4.71 ± 0.17 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 0.656 +0.090 −0.083 ( 0.87 +0.12 −0.11 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1073 ± 20 | K |
| Reference of detailed study | 2019A+A...623A.165E |
HD 219666 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/01/29 John Southworth (Keele University, UK)