All names: Gaia DR3 77986298173874176, USNO-B1.0 1040-00019176, GALEX J015441.7+140307, NLTT 6401, SDSS J015441.75+140308.0, J0154+1403, WIRED J015441.74+140307.9, 2MASS J01544169+1403084, Gaia DR2 77986298173874176, LP 468-295, PSO J028.6746+14.0513, SDSS J015441.74+140307.9, WDJ015441.75+140307.96, SDSS J015441.74+140308.0, WD 0151+138, Gaia EDR3 77986298173874176, LSPM J0154+1403, TIC 404672663
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | Coutu et al. 2019 | Blouin et al. 2019 | Gaia DR2 | Stilism | Koester et al. 2006 | Dufour et al. 2005 | Harris et al. 2003 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 54 41.93 (0.1) | 01 54 41.75 | 01 54 41.75 | 01 54 41.93 (0.1) | 01 54 41.93 | 01 54 41.75 (0.1) | 01 54 41.93 | 01 54 41.75 | 01 54 40.61 | 01 54 41.74 | |||||||||
| Declination | 14 03 04.46 (0.09) | 14 03 08.00 | 14 03 07.96 | 14 03 04.57 (0.1) | 14 03 04.46 | 14 03 07.97 (0.09) | 14 03 04.57 | 14 03 07.97 | 14 03 06.12 | 14 03 07.99 | |||||||||
| Spectral type | DQ | DQ | DQ | DQ | DQ | DQ | DQ | DQ | DQ | DQ | DQ | DQPEC | DQ | ||||||
| Effective temperature | [K] | 6475.0 (34) | 6529.0 (100) | 6370.0 (90) | 6511.0 | 6450.0 (70) | 6536.0 (70) | 10080.0 (6) | 6300.0 (4) | ||||||||||
| log(g) | [cgs] | 7.95 (0.01) | 7.97 | 7.92 (0.04) | 8.00 (0) | 8.00 (0) | 7.96 (0.02) | 8.51 (0.3) | 10.00 (0.003) | ||||||||||
| Mass | [M☉] | 0.542 (0.01) | 0.5546 | 0.525 (0.02) | 0.548 (0.02) | ||||||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||||
| Cooling age | [Gyr] | 1.8500 | 1.7700 | 1.7850 (0.1) | |||||||||||||||
| log(H/He) | |||||||||||||||||||
| log(C/He) | -6.82 | -6.7241 (0.05) | -6.95 | -6.89 (0.01) | -6.97 (0.2) | ||||||||||||||
| 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] | 16.10 (0.1) | 16.21 (0.2) | 16.21 | 16.21 (0.2) | 16.21 (0.2) | 16.10 | 16.10 (0.1) | 16.21 (0.2) | ||||||||||
| Distance | [pc] | 62.10 (0.5) | 61.69 (0.6) | 61.68 (0.7) | 61.68 (0.7) | 61.68 (0.7) | 59.00 | 62.10 | 62.10 (0.5) | 61.68 (0.7) | |||||||||
| Composition | He | He | He | He | He | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 166.8627987 (0.1) | 166.8652657 (0.3) | 166.863 (0.1) | 166.865 | 165.4 | |||||||||||||
| Proper motion (declination) | [mas/yr] | -219.087741 (0.1) | -218.6744213 (0.2) | -219.088 (0.1) | -218.674 | -219.4 | |||||||||||||
| Variability | |||||||||||||||||||
| Magnetic | |||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||
| Binarity | |||||||||||||||||||
| B magnitude | 17.73 | ||||||||||||||||||
| V magnitude | |||||||||||||||||||
| R magnitude | 17.60 | ||||||||||||||||||
| I magnitude | |||||||||||||||||||
| J magnitude | 17.07 (0.02) | 16.72 (0.2) | 17.07 (0.02) | ||||||||||||||||
| H magnitude | 16.96 (0.04) | 16.96 (0.04) | |||||||||||||||||
| K magnitude | 16.64 (0.06) | 16.64 (0.06) | |||||||||||||||||
| u magnitude | 18.43 (0.01) | 18.43 (0.01) | 18.40 | 18.43 (0.01) | 18.43 (0.01) | 18.41 (0.02) | 18.40 | 18.42 (0.02) | |||||||||||
| g magnitude | 17.87 (0.006) | 17.88 | 17.87 (0.006) | 17.87 (0.006) | 17.85 (0.02) | 17.88 | 17.85 (0.02) | ||||||||||||
| r magnitude | 17.64 (0.006) | 17.65 | 17.64 (0.007) | 17.64 (0.006) | 17.65 (0.02) | 17.65 | 17.64 (0.02) | ||||||||||||
| i magnitude | 17.59 (0.007) | 17.57 | 17.62 (0.009) | 17.59 (0.007) | 17.57 (0.02) | 17.57 | 17.57 (0.02) | ||||||||||||
| z magnitude | 17.65 (0.02) | 17.64 | 17.67 (0.007) | 17.65 (0.02) | 17.64 (0.03) | 17.64 | 17.65 (0.02) | ||||||||||||
| G magnitude | 17.64 (0.02) | 17.67 | 17.64 | 17.64 (0.003) | 17.67 | ||||||||||||||
| BP magnitude | 17.86 (0.02) | 17.85 | 17.85 | ||||||||||||||||
| RP magnitude | 17.31 (0.02) | 17.28 | 17.28 | ||||||||||||||||
| Pan g magnitude | 17.86 (0.01) | 17.86 (0.01) | 17.86 (0.01) | ||||||||||||||||
| Pan r magnitude | 17.64 (0.006) | 17.64 (0.007) | 17.64 (0.007) | ||||||||||||||||
| Pan i magnitude | 17.62 (0.009) | 17.62 (0.009) | 17.62 (0.009) | ||||||||||||||||
| Pan z magnitude | 17.67 (0.008) | 17.67 (0.007) | 17.67 (0.007) | ||||||||||||||||
| Pan y magnitude | 17.68 (0.008) | 17.68 (0.008) | 17.68 (0.008) | ||||||||||||||||
| E(B-V) | 0.004 | ||||||||||||||||||
* 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.