All names: 2QZ J013914.4-274322, MCT 0136-2758, HE 0136-2758, MCT0136-2758, Gaia DR3 5035737489706306944, Gaia EDR3 5035737489706306944, GD 1484, EC 01369-2758, USNO-B1.0 0622-00025218, GALEX J013914.4-274322, Ton S 225, Gaia DR2 5035737489706306944, PHL 1091
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 01 39 14.50 (0.04) | 01 39 14.46 | 01 39 14.47 (0.04) | ||
| Declination | -27 43 22.17 (0.03) | -27 43 21.79 | -27 43 21.87 (0.03) | ||
| Spectral type | sdB | sdBHe0 | |||
| Effective temperature | [K] | 28202.0 (500) | |||
| log(g) | [cgs] | 5.47 (0.05) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.50 (0.05) | 0.31 (0.08) | 0.50 (0.05) | |
| Distance | [pc] | 1993.62 (214) | 3193.87 (772) | 1993.62 (214) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 19.704 (0.07) | 19.468 (0.1) | 19.704 (0.07) | |
| Proper motion (declination) | [mas/yr] | -18.461 (0.03) | -18.704 (0.06) | -18.461 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 16.60 | ||||
| V magnitude | 16.17 | ||||
| R magnitude | 16.00 | ||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.15 (0.003) | 16.19 (0.002) | 16.15 (0.003) | ||
| BP magnitude | 16.01 (0.004) | 15.98 (0.006) | |||
| RP magnitude | 16.41 (0.005) | 16.41 (0.003) | |||
| Pan g magnitude | 16.00 (0.006) | ||||
| Pan r magnitude | 16.39 (0.004) | ||||
| Pan i magnitude | 16.75 (0.003) | ||||
| Pan z magnitude | 17.01 (0.004) | ||||
| Pan y magnitude | 17.22 (0.01) | ||||
| E(B-V) | 0.009 | ||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.