All names: 2MASS J15445676+4515220, WIRED J154456.80+451521.9, SDSS J154456.80+451521.9, Gaia DR3 1397494362828524800, Gaia DR2 1397494362828524800, Gaia EDR3 1397494362828524800, SDSS J154456.80+451522.0, GALEX J154456.8+451522, LAMOST J154456.80+451521.9, PG 1543+454, TIC 156005850, LAMOST J154456.85+451522.4, WD 1543+454
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 44 56.81 (0.04) | 15 44 56.80 | 15 44 56.81 (0.04) | 15 44 56.81 | 15 44 56.80 (0.04) | 15 44 56.80 | 15 44 56.71 | 15 44 56.80 | |||||||
| Declination | 45 15 21.97 (0.05) | 45 15 21.99 | 45 15 21.97 (0.05) | 45 15 21.97 | 45 15 21.94 (0.05) | 45 15 21.96 | 45 15 16.20 | 45 15 21.96 | |||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 71907.0 (1702) | 76080.0 (2160) | 300852.0 (51705) | 84281.0 (2114) | 76596.0 (1863) | |||||||||
| log(g) | [cgs] | 7.39 (0.06) | 7.47 (0.08) | 8.51 (0.05) | 7.45 (0.08) | 7.48 (0.07) | |||||||||
| Mass | [M☉] | 0.51 (0.02) | 0.56 (0.02) | 1.942 (0.09) | 0.567 (0.02) | ||||||||||
| log(Luminosity) | [L☉] | 1.14 (0.06) | |||||||||||||
| Cooling age | [Gyr] | 0.0001 | 0.0004 | ||||||||||||
| log(H/He) | |||||||||||||||
| log(C/He) | |||||||||||||||
| log(Ca/He) | |||||||||||||||
| log(Ca/H) | |||||||||||||||
| log(C/H) | |||||||||||||||
| log(N/H) | |||||||||||||||
| log(O/H) | |||||||||||||||
| log(Na/H) | |||||||||||||||
| log(Mg/H) | |||||||||||||||
| log(Al/H) | |||||||||||||||
| log(Si/H) | |||||||||||||||
| log(P/H) | |||||||||||||||
| log(S/H) | |||||||||||||||
| log(Sc/H) | |||||||||||||||
| log(Ti/H) | |||||||||||||||
| log(Cr/H) | |||||||||||||||
| log(Mn/H) | |||||||||||||||
| log(Fe/H) | |||||||||||||||
| log(Ni/H) | |||||||||||||||
| Parallax | [mas] | 2.11 (0.05) | 2.06 (0.05) | 2.11 | 2.11 (0.05) | ||||||||||
| Distance | [pc] | 473.99 (11) | 485.18 (12) | 473.99 | 474.00 (11) | ||||||||||
| Composition | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.636238417 (0.06) | 2.612667092 (0.09) | 2.636 (0.06) | -1.2 | ||||||||||
| Proper motion (declination) | [mas/yr] | 2.097322849 (0.08) | 2.289604912 (0.1) | 2.097 (0.08) | -3.9 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | 15.78 | ||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | |||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 16.85 (0.1) | ||||||||||||||
| H magnitude | 17.18 (0.1) | ||||||||||||||
| K magnitude | 16.90 (0.1) | ||||||||||||||
| u magnitude | 15.44 (0.005) | 15.44 (0.005) | 15.43 (0.01) | 15.42 | 15.44 (0.02) | ||||||||||
| g magnitude | 15.87 (0.004) | 15.87 (0.004) | 15.90 (0.02) | 15.90 | 15.92 (0.02) | ||||||||||
| r magnitude | 16.45 (0.005) | 16.45 (0.005) | 16.45 (0.01) | 16.45 | 16.45 (0.01) | ||||||||||
| i magnitude | 16.82 (0.005) | 16.82 (0.005) | 16.82 (0.01) | 16.82 | 16.83 (0.01) | ||||||||||
| z magnitude | 17.19 (0.01) | 17.19 (0.01) | 17.16 (0.02) | 17.16 | 17.18 (0.02) | ||||||||||
| G magnitude | 16.17 (0.003) | 16.20 | 16.17 | 16.17 (0.003) | |||||||||||
| BP magnitude | 15.99 (0.003) | 15.91 | |||||||||||||
| RP magnitude | 16.52 (0.005) | 16.52 | |||||||||||||
| Pan g magnitude | 15.98 (0.007) | ||||||||||||||
| Pan r magnitude | 16.48 (0.004) | ||||||||||||||
| Pan i magnitude | 16.86 (0.007) | ||||||||||||||
| Pan z magnitude | 17.15 (0.007) | ||||||||||||||
| Pan y magnitude | 17.38 (0.01) | ||||||||||||||
| E(B-V) | 0.019 | ||||||||||||||
* 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.