This page summarises the information held within TEPCat for the transiting planetary system HD 1397. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019A+A...623A.100N | |
| Date of discovery paper | 2018 / 11 / 6 | y / m / d |
| Data/telescope used for discovery | TESS | |
| Right ascension | 00 17 47.14 | h m s |
| Declination | −66 21 32.3 | d m s |
| Right ascension (decimal) | 4.44642 | degrees |
| Declination (decimal) | -66.35897 | degrees |
| V-band apparent magnitude | 7.87 | mag |
| K-band apparent magnitude | 5.99 | mag |
| Transit duration | 0.3585 ( 8.604 ) | day hour |
| Transit depth | 0.25 | % |
| Time of mid-transit | 2458332.08230 ± 0.00050 | HJD or BJD |
| Orbital period | 11.53604 ± 0.00036 | days |
| Reference for orbital ephemeris | 2019A+A...623A.100N |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5528 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.273 ± 0.05 | dex |
| Stellar mass | 1.322 ± 0.040 | Msun |
| Stellar radius | 2.328 +0.050 −0.056 | Rsun |
| Stellar logarithmic surface gravity | 3.826 +0.020 −0.018 | c.g.s. |
| Stellar mean density | 0.105 +0.007 −0.006 ( 0.1482 +0.0099 −0.0085 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.265 ± 0.023 | |
| Orbital semimajor axis | 0.1097 +0.0011 −0.0012 | AU |
| Planetary mass | 0.419 ± 0.024 ( 133.20 ± 7.63 ) | Mjup Mearth |
| Planetary radius | 1.023 +0.023 −0.026 ( 11.47 + 0.26 − 0.29 ) | Rjup Rearth |
| Planetary surface gravity | 9.93 +0.70 −0.71 3.00 +0.03 −0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.367 +0.032 −0.030 ( 0.487 +0.042 −0.040 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1228 ± 10 | K |
| Reference of detailed study | 2019A+A...623A.100N |
HD 1397 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2024/09/04 John Southworth (Keele University, UK)