All names: J1542+7247, WDS J15422+7246B, Gaia EDR3 1696660893947352704, CCDM J15422+7247B, TIC 1102569055, Gaia DR2 1696660893947352704, WDJ154210.76+724735.42, ** LDS 1828B, Gaia DR3 1696660893947352704, NLTT 41096, LSPM J1542+7247N, IDS 15431+7305 B, WD 1542+729, LP 42-164, USNO-B1.0 1627-00120014
| 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.