All names: Gaia EDR3 1696660893947352704, NLTT 41096, Gaia DR2 1696660893947352704, ** LDS 1828B, J1542+7247, WDS J15422+7246B, USNO-B1.0 1627-00120014, WD 1542+729, LP 42-164, CCDM J15422+7247B, LSPM J1542+7247N, Gaia DR3 1696660893947352704, WDJ154210.76+724735.42, TIC 1102569055, IDS 15431+7305 B
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Gaia DR2 | Tremblay et al. 2017 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 42 10.29 (0.09) | 15 42 10.31 (0.1) | 15 42 10.29 | 15 42 10.76 (0.09) | 15 42 10.31 | |||||
| Declination | 72 47 34.15 (0.09) | 72 47 34.19 (0.1) | 72 47 34.15 | 72 47 35.42 (0.09) | 72 47 34.19 | |||||
| Spectral type | DC | DC | DA | DA | ||||||
| Effective temperature | [K] | 5642.0 (79) | 6224.0 (80) | |||||||
| log(g) | [cgs] | 7.49 (0.03) | 7.95 (0.03) | |||||||
| Mass | [M☉] | 0.314 (0.02) | 0.557 (0.02) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 1.6500 | ||||||||
| log(H/He) | -5.0 | |||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(N/He) | ||||||||||
| log(O/He) | ||||||||||
| log(Na/He) | ||||||||||
| log(Mg/He) | ||||||||||
| 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) | ||||||||||
| log(Mn/He) | ||||||||||
| log(Fe/He) | ||||||||||
| log(Co/He) | ||||||||||
| log(Ni/He) | ||||||||||
| log(Cu/He) | ||||||||||
| log(Zn/He) | ||||||||||
| log(Ga/He) | ||||||||||
| log(Ge/He) | ||||||||||
| log(Sr/He) | ||||||||||
| Parallax | [mas] | 13.63 (0.1) | 13.61 (0.1) | 13.61 (0.1) | 13.44 (0.4) | 13.63 | 13.63 (0.1) | 13.61 (0.1) | ||
| Distance | [pc] | 73.36 (0.5) | 73.48 (0.6) | 73.49 (0.6) | 74.40 (2) | 73.36 | 73.36 (0.5) | 73.49 (0.6) | ||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | -129.4786313 (0.1) | -129.3255082 (0.2) | -129.479 (0.1) | -129.3255082 | |||||
| Proper motion (declination) | [mas/yr] | -79.5891555 (0.1) | -79.40488125 (0.2) | -79.589 (0.1) | -79.40488125 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 17.40 | |||||||||
| V magnitude | 18.06 (0.05) | |||||||||
| R magnitude | 16.70 | |||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 18.15 (0.02) | 18.17 | 18.08 (0.004) | 18.15 | 18.15 (0.003) | 18.17 | ||||
| BP magnitude | 18.42 (0.02) | 18.42 | 18.42 | |||||||
| RP magnitude | 17.70 (0.02) | 17.69 | 17.69 | |||||||
| Pan g magnitude | 18.38 (0.01) | 18.38 (0.01) | ||||||||
| Pan r magnitude | 18.11 (0.02) | 18.11 (0.01) | ||||||||
| Pan i magnitude | 18.02 (0.007) | 18.02 (0.009) | ||||||||
| Pan z magnitude | 18.03 (0.01) | 18.03 (0.01) | ||||||||
| Pan y magnitude | 17.85 (0.03) | 17.85 (0.03) | ||||||||
| E(B-V) | 0.008 | |||||||||
* 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.