All names: SDSS J155426.25+461708.1, PG 1552+464, 2MASS J15542627+4617082, SDSS J155426.22+461707.8, Gaia DR2 1397232271040309248, Gaia EDR3 1397232271040309248, GALEX J155426.3+461707, Gaia DR3 1397232271040309248, SDSS J155426.25+461708.0, WDJ155426.27+461708.14, TIC 157375286
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Koester & Kepler 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 54 26.22 (0.03) | 15 54 26.22 (0.05) | 15 54 26.22 | 15 54 26.27 (0.03) | 15 54 26.22 | ||||||||
| Declination | 46 17 07.74 (0.04) | 46 17 07.75 (0.07) | 46 17 07.74 | 46 17 08.14 (0.04) | 46 17 07.75 | ||||||||
| Spectral type | DBA | DB | DBA | DB | |||||||||
| Effective temperature | [K] | 12020.0 (130) | 12078.0 | 12764.0 | 12606.0 (34) | 12896.0 (165) | |||||||
| log(g) | [cgs] | 7.99 (0.01) | 8.10 | 8.12 | 8.00 (0) | 8.13 (0.01) | |||||||
| Mass | [M☉] | 0.581 (0.01) | 0.668 | 0.656 | 0.663 (0.01) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.4243 | 0.3874 | ||||||||||
| log(H/He) | -4.5 | -4.57 (0.06) | |||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | <-10.16 | ||||||||||||
| log(Ca/H) | |||||||||||||
| Parallax | [mas] | 11.52 (0.04) | 11.53 (0.07) | 11.52 | 11.52 (0.04) | 11.53 (0.07) | |||||||
| Distance | [pc] | 86.80 (0.3) | 86.75 (0.5) | 91.00 | 86.80 | 86.80 (0.3) | 86.75 (0.5) | ||||||
| Composition | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -30.84946594 (0.04) | -30.881 (0.1) | -30.849 (0.04) | -30.88146267 | ||||||||
| Proper motion (declination) | [mas/yr] | -25.16422603 (0.05) | -24.997 (0.1) | -25.164 (0.05) | -24.99651085 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 16.01 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 16.43 (0.1) | ||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 16.41 (0.007) | 16.41 (0.007) | |||||||||||
| g magnitude | 16.40 (0.004) | 16.40 (0.004) | |||||||||||
| r magnitude | 16.65 (0.005) | 16.65 (0.005) | |||||||||||
| i magnitude | 16.85 (0.006) | 16.85 (0.006) | |||||||||||
| z magnitude | 17.07 (0.01) | 17.07 (0.01) | |||||||||||
| G magnitude | 16.49 (0.003) | 16.52 | 16.49 | 16.49 (0.003) | 16.52 | ||||||||
| BP magnitude | 16.48 (0.003) | 16.43 | 16.43 | ||||||||||
| RP magnitude | 16.54 (0.006) | 16.54 | 16.54 | ||||||||||
| Pan g magnitude | 16.43 (0.007) | ||||||||||||
| Pan r magnitude | 16.65 (0.004) | ||||||||||||
| Pan i magnitude | 16.85 (0.003) | ||||||||||||
| Pan z magnitude | 17.05 (0.004) | ||||||||||||
| Pan y magnitude | 17.21 (0.01) | ||||||||||||
| E(B-V) | 0.011 | ||||||||||||
* 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.