All names: TIC 254299169, GD 1686, MCT2337-2944, PHL 573, Gaia DR2 2327655193900333824, GALEX J234015.4-292759, BPS CS 29496-0017, Gaia EDR3 2327655193900333824, HE 2337-2944, Gaia DR3 2327655193900333824, 2MASS J23401536-2927597, MCT 2337-2944, UCAC4 303-279206
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 23 40 15.39 (0.04) | 23 40 15.33 | 23 40 15.36 (0.04) | ||
| Declination | -29 27 59.87 (0.03) | -29 27 59.79 | -29 27 59.80 (0.03) | ||
| Spectral type | sdB | sdBHe1 | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.27 (0.04) | 1.21 (0.06) | 1.27 (0.04) | |
| Distance | [pc] | 786.60 (25) | 829.88 (41) | 786.60 (25) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 20.082 (0.05) | 20.426 (0.1) | 20.082 (0.05) | |
| Proper motion (declination) | [mas/yr] | -4.697 (0.04) | -4.838 (0.08) | -4.697 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.26 (0.06) | ||||
| V magnitude | 14.43 (0.06) | ||||
| R magnitude | 14.70 (0.08) | ||||
| I magnitude | |||||
| J magnitude | 15.18 (0.05) | 15.18 (0.05) | |||
| H magnitude | 15.14 (0.1) | 15.14 (0.1) | |||
| K magnitude | 15.10 (0.2) | 15.10 (0.2) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 14.42 (0.003) | 14.44 (0.001) | 14.42 (0.003) | ||
| BP magnitude | 14.27 (0.004) | 14.19 (0.02) | |||
| RP magnitude | 14.72 (0.004) | 14.72 (0.002) | |||
| Pan g magnitude | 14.26 (0.005) | ||||
| Pan r magnitude | 14.69 (0.005) | ||||
| Pan i magnitude | 15.05 (0.002) | ||||
| Pan z magnitude | 15.34 (0.006) | ||||
| Pan y magnitude | 15.52 (0.004) | ||||
| 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.