All names: SDSS J154625.34+300946.2, WD 1544+303, SDSS J154625.33+300946.2, Gaia DR2 1321060987390596096, Gaia EDR3 1321060987390596096, SDSS J154625.34+300946.26, Gaia DR3 1321060987390596096
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | SDSS DR10 | Gaia DR2 | Hollands et al. 2017 | Stilism | Kepler et al. 2015 | Koester et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 46 25.33 (0.2) | 15 46 25.34 | 15 46 25.34 | 15 46 25.33 (0.3) | 15 46 25.33 | 15 46 25.35 (0.2) | 15 46 25.34 | |||||||
| Declination | 30 09 46.21 (0.3) | 30 09 46.26 | 30 09 46.26 | 30 09 46.21 (0.4) | 30 09 46.21 | 30 09 46.26 (0.3) | 30 09 44.64 | |||||||
| Spectral type | DZ | DZ | DZ | DZ | DZ | DZ | DZ | |||||||
| Effective temperature | [K] | 6600.0 (120) | 7373.0 (220) | 6700.0 | 6635.0 (252) | |||||||||
| log(g) | [cgs] | 8.00 (0) | 8.00 (0) | 7.93 (0.09) | ||||||||||
| Mass | [M☉] | 0.531 (0.08) | ||||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 2.3000 | ||||||||||||
| log(H/He) | ||||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | -8.4 | -7.382000000000001 (0.02) | -8.5 | |||||||||||
| log(Ca/H) | ||||||||||||||
| log(N/He) | ||||||||||||||
| log(O/He) | ||||||||||||||
| log(Na/He) | -8.78 | |||||||||||||
| log(Mg/He) | -7.19 | -7.2 | ||||||||||||
| log(Al/He) | ||||||||||||||
| log(Si/He) | ||||||||||||||
| log(P/He) | ||||||||||||||
| log(S/He) | ||||||||||||||
| log(Cl/He) | ||||||||||||||
| log(Sc/He) | ||||||||||||||
| log(Ti/He) | ||||||||||||||
| log(V/He) | ||||||||||||||
| log(Cr/He) | -8.65 | |||||||||||||
| log(Mn/He) | ||||||||||||||
| log(Fe/He) | -7.19 | -7.0 | ||||||||||||
| log(Co/He) | ||||||||||||||
| log(Ni/He) | ||||||||||||||
| log(Cu/He) | ||||||||||||||
| log(Zn/He) | ||||||||||||||
| log(Ga/He) | ||||||||||||||
| log(Ge/He) | ||||||||||||||
| log(Sr/He) | ||||||||||||||
| Parallax | [mas] | 6.03 (0.3) | 6.06 (0.5) | 6.03 | 6.03 (0.3) | |||||||||
| Distance | [pc] | 165.88 (9) | 164.98 (13) | 157.00 (21) | 165.88 | 165.88 (9) | ||||||||
| Composition | He | He | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -11.31119215 (0.3) | -10.99008787 (0.5) | -11.311 (0.3) | ||||||||||
| Proper motion (declination) | [mas/yr] | -3.023583903 (0.4) | -2.232719203 (0.9) | -3.024 (0.4) | ||||||||||
| Variability | ||||||||||||||
| Magnetic | yes | |||||||||||||
| Bd | [MG] | 0.81 (0.07) | ||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | ||||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 21.41 (0.08) | 21.41 (0.08) | 21.43 (0.08) | 21.41 (0.08) | 21.40 (0.09) | 21.41 (0.08) | 21.39 | |||||||
| g magnitude | 19.80 (0.01) | 19.80 (0.01) | 19.80 (0.02) | 19.80 (0.01) | 19.81 (0.02) | 19.80 (0.01) | 19.80 | |||||||
| r magnitude | 19.53 (0.01) | 19.53 (0.01) | 19.53 (0.02) | 19.53 (0.01) | 19.53 (0.02) | 19.52 (0.01) | 19.52 | |||||||
| i magnitude | 19.64 (0.02) | 19.64 (0.02) | 19.64 (0.02) | 19.64 (0.02) | 19.65 (0.02) | 19.64 (0.02) | 19.64 | |||||||
| z magnitude | 19.77 (0.06) | 19.77 (0.06) | 19.80 (0.06) | 19.77 (0.06) | 19.79 (0.06) | 19.77 (0.06) | 19.79 | |||||||
| G magnitude | 19.62 (0.05) | 19.67 | 19.62 | 19.62 (0.004) | ||||||||||
| BP magnitude | 19.79 (0.05) | 19.81 | ||||||||||||
| RP magnitude | 19.37 (0.04) | 19.31 | ||||||||||||
| Pan g magnitude | 19.76 (0.02) | |||||||||||||
| Pan r magnitude | 19.56 (0.01) | |||||||||||||
| Pan i magnitude | 19.65 (0.007) | |||||||||||||
| Pan z magnitude | 19.76 (0.02) | |||||||||||||
| Pan y magnitude | 19.70 (0.05) | |||||||||||||
| E(B-V) | 0.023 | |||||||||||||
* 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.