All names: SDSS J154419.37+420059.9, Gaia EDR3 1390128700074934016, Gaia DR3 1390128700074934016, GALEX J154419.4+420059, Gaia DR2 1390128700074934016
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 15 44 19.38 (0.2) | 15 44 19.37 (0.2) | ||
| Declination | 42 00 59.24 (0.2) | 42 01 00.13 (0.2) | ||
| Spectral type | DC | |||
| 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] | 3.87 (0.2) | 3.87 (0.2) | |
| Distance | [pc] | 258.32 (15) | 258.32 (15) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 5.446 (0.2) | 5.446 (0.2) | |
| Proper motion (declination) | [mas/yr] | -55.994 (0.3) | -55.994 (0.3) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 19.72 (0.04) | |||
| g magnitude | 19.60 (0.01) | |||
| r magnitude | 19.65 (0.02) | |||
| i magnitude | 19.76 (0.03) | |||
| z magnitude | 19.99 (0.1) | |||
| G magnitude | 19.58 (0.004) | 19.58 (0.004) | ||
| BP magnitude | 19.73 (0.05) | |||
| RP magnitude | 19.60 (0.06) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.020 | |||
* 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.