This page summarises the information held within TEPCat for the transiting planetary system GJ 3470. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2012A+A...546A..27B | |
| Date of discovery paper | 2012 / 6 / 26 | y / m / d |
| Data/telescope used for discovery | TRAPPIST | |
| Right ascension | 07 59 05.87 | h m s |
| Declination | +15 23 29.4 | d m s |
| Right ascension (decimal) | 119.77446 | degrees |
| Declination (decimal) | 15.39150 | degrees |
| V-band apparent magnitude | 12.27 | mag |
| K-band apparent magnitude | 7.99 | mag |
| Transit duration | 0.07992 ( 1.9181 ) | day hour |
| Transit depth | 0.7 | % |
| Time of mid-transit | 2456340.72559 ± 0.00010 | HJD or BJD |
| Orbital period | 3.33665266 ± 0.00000030 | days |
| Reference for orbital ephemeris | 2022ApJ...931L..15S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 3725 ± 54 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.420 ± 0.019 | dex |
| Stellar mass | 0.476 ± 0.019 | Msun |
| Stellar radius | 0.474 ± 0.018 | Rsun |
| Stellar logarithmic surface gravity | 4.65 ± 0.06 | c.g.s. |
| Stellar mean density | 3.39 +0.30 −0.32 ( 4.78 +0.42 −0.45 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.017 +0.016 −0.012 | |
| Orbital semimajor axis | 0.03557 +0.00096 −0.00100 | AU |
| Planetary mass | 0.0432 ± 0.0051 ( 13.7 ± 1.6 ) | Mjup Mearth |
| Planetary radius | 0.346 ± 0.029 ( 3.88 ± 0.33 ) | Rjup Rearth |
| Planetary surface gravity | 6.8 ± 1.7 2.83 ± 0.10 | m/s2 log(cgs) |
| Planetary mean density | 0.89 ± 0.25 ( 1.18 ± 0.33 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 604 ± 98 | K |
| Reference of detailed study | 2020A+A...638A..61P |
| Reference | λ (degrees) |
|---|---|
| Stefánsson et al. (2022) | 101 + 29 - 14 |
Page generated on 2024/09/04 John Southworth (Keele University, UK)