All names: SDSS J075412.38+294957.1, Gaia EDR3 877431345781684480, Gaia DR2 877431345781684480, Gaia DR3 877431345781684480, SDSSJ075412.38+294957.1, TIC 171305519, LAMOST J075412.37+294957.0, Ton 291, SDSS J075412.37+294957.1, 2MASS J07541238+2949570, GALEX J075412.4+294959
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 07 54 12.37 (0.03) | 07 54 12.38 | 07 54 12.38 (0.03) | ||
| Declination | 29 49 56.96 (0.03) | 29 49 57.10 | 29 49 57.10 (0.03) | ||
| Spectral type | sdB | sdBHe7 | |||
| Effective temperature | [K] | 31270.0 (1010) | |||
| log(g) | [cgs] | 5.82 (0.2) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.06 (0.05) | 0.92 (0.07) | 1.06 (0.05) | |
| Distance | [pc] | 939.32 (40) | 1082.02 (87) | 939.32 (40) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -6.09 (0.04) | -6.095 (0.1) | -6.09 (0.04) | |
| Proper motion (declination) | [mas/yr] | -9.24 (0.03) | -9.157 (0.07) | -9.24 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.70 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.20 (0.04) | 15.20 (0.04) | |||
| H magnitude | 15.49 (0.08) | 15.49 (0.08) | |||
| K magnitude | 15.55 (0.2) | 15.55 (0.2) | |||
| u magnitude | 14.10 (0.004) | 14.08 (0.02) | |||
| g magnitude | 14.29 (0.003) | 14.39 (0.01) | |||
| r magnitude | 14.79 (0.004) | 14.78 (0.02) | |||
| i magnitude | 15.12 (0.004) | 15.13 (0.02) | |||
| z magnitude | 15.44 (0.006) | 15.46 (0.03) | |||
| G magnitude | 14.56 (0.003) | 14.57 (0.0008) | 14.56 (0.003) | ||
| BP magnitude | 14.42 (0.003) | 14.36 (0.007) | |||
| RP magnitude | 14.82 (0.005) | 14.82 (0.002) | |||
| Pan g magnitude | 14.39 (0.003) | ||||
| Pan r magnitude | 14.80 (0.001) | ||||
| Pan i magnitude | 15.16 (0.001) | ||||
| Pan z magnitude | 15.43 (0.002) | ||||
| Pan y magnitude | 15.60 (0.003) | ||||
| E(B-V) | 0.039 | ||||
* 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.