This page summarises the information held within TEPCat for the transiting planetary system HD 77946. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2024MNRAS.529.3323P | |
| Date of discovery paper | 2024 / 3 / 8 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 09 07 06.63 | h m s |
| Declination | +46 40 20.7 | d m s |
| Right ascension (decimal) | 136.77763 | degrees |
| Declination (decimal) | 46.67242 | degrees |
| V-band apparent magnitude | 9.00 | mag |
| K-band apparent magnitude | 7.62 | mag |
| Transit duration | 0.148 ( 3.55 ) | day hour |
| Transit depth | 0.04 | % |
| Time of mid-transit | 2459587.4740 ± 0.0011 | HJD or BJD |
| Orbital period | 6.527282 ± 0.000018 | days |
| Reference for orbital ephemeris | 2024MNRAS.529.3323P |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6046 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.18 ± 0.05 | dex |
| Stellar mass | 1.17 +0.06 −0.05 | Msun |
| Stellar radius | 1.31 ± 0.01 | Rsun |
| Stellar logarithmic surface gravity | 4.27 +0.03 −0.02 | c.g.s. |
| Stellar mean density | 0.395 +0.051 −0.050 ( 0.557 +0.072 −0.071 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.233 +0.064 −0.079 | |
| Orbital semimajor axis | 0.0720 ± 0.0012 | AU |
| Planetary mass | 0.0264 ± 0.0042 ( 8.4 ± 1.3 ) | Mjup Mearth |
| Planetary radius | 0.2413 +0.0077 −0.0072 ( 2.705 +0.086 −0.081 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | 1.86 +0.35 −0.34 ( 2.47 +0.46 −0.45 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | 2024MNRAS.529.3323P |
HD 77946 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/01/29 John Southworth (Keele University, UK)