All names: SDSS J142833.78+440346.2, GALEX J142833.8+440345, 2MASS J14283375+4403474, Gaia DR2 1494157691363079168, LSPM J1428+4403, WDJ142833.74+440346.94, SDSS J142833.78+440346.1, Gaia DR3 1494157691363079168, LP 221-114, TIC 158034166, WIRED J142833.77+440346.1, WD 1426+442, NLTT 37481, SDSS J142833.77+440346.2, Gaia EDR3 1494157691363079168, J1428+4403, PSO J217.1412+44.0620, SDSS J142833.77+440346.1, USNO-B1.0 1340-00256538, G 200-42
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Blouin 2020 | Coutu et al. 2019 | Blouin et al. 2019 | Gaia DR2 | Hollands et al. 2017 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 28 33.93 (0.04) | 14 28 33.77 | 14 28 33.74 | 14 28 33.92 (0.04) | 14 28 33.93 | 14 28 33.74 (0.04) | 14 28 33.92 | 14 28 32.81 | 14 28 33.78 | |||||||||
| Declination | 44 03 42.99 (0.04) | 44 03 46.18 | 44 03 46.94 | 44 03 43.11 (0.05) | 44 03 42.99 | 44 03 46.94 (0.04) | 44 03 43.11 | 44 03 50.76 | 44 03 46.15 | |||||||||
| Spectral type | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ7 | DZ | DZ | ||||||
| Effective temperature | [K] | 6793.0 (33) | 6622.0 (17) | 6574.0 (77) | 6602.0 (59) | 6355.0 (95) | 6600.0 (60) | 6477.0 (42) | 6300.0 (3) | |||||||||
| log(g) | [cgs] | 8.15 (0.008) | 8.08 (0.005) | 8.06 (0.02) | 8.06 | 8.04 (0.03) | 8.02 (0.01) | 10.00 (0.003) | ||||||||||
| Mass | [M☉] | 0.667 (0.007) | 0.625 (0.005) | 0.614 (0.01) | 0.61 | 0.602 (0.02) | 0.585 (0.009) | |||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||||
| Cooling age | [Gyr] | 2.1200 | 2.0000 | 2.3320 (0.2) | 2.3000 | |||||||||||||
| log(H/He) | -5.0 | -4.0 | <-3.4526 | |||||||||||||||
| log(C/He) | ||||||||||||||||||
| log(Ca/He) | -9.29 | -9.4 | -9.5 (0.1) | -9.4385 (0.1) | -9.3 | -8.98 | ||||||||||||
| log(Ca/H) | ||||||||||||||||||
| log(N/He) | ||||||||||||||||||
| log(O/He) | ||||||||||||||||||
| log(Na/He) | ||||||||||||||||||
| log(Mg/He) | -7.9 (0.1) | -8.2 | ||||||||||||||||
| 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) | ||||||||||||||||||
| log(Mn/He) | ||||||||||||||||||
| log(Fe/He) | -8.9 (0.2) | -8.4 | ||||||||||||||||
| log(Co/He) | ||||||||||||||||||
| log(Ni/He) | ||||||||||||||||||
| log(Cu/He) | ||||||||||||||||||
| log(Zn/He) | ||||||||||||||||||
| log(Ga/He) | ||||||||||||||||||
| log(Ge/He) | ||||||||||||||||||
| log(Sr/He) | ||||||||||||||||||
| Parallax | [mas] | 22.32 (0.05) | 22.28 (0.06) | 22.28 | 22.28 (0.06) | 22.28 (0.06) | 22.32 | 22.32 (0.05) | 22.28 (0.06) | |||||||||
| Distance | [pc] | 44.80 (0.1) | 44.88 (0.1) | 44.83 (0.1) | 44.89 (0.1) | 44.89 (0.1) | 44.89 (0.1) | 44.10 (6) | 44.80 | 44.80 (0.1) | 44.89 (0.1) | |||||||
| Composition | He | He | He | He | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 130.3092675 (0.04) | 130.4175253 (0.08) | 130.309 (0.04) | 130.418 | |||||||||||||
| Proper motion (declination) | [mas/yr] | -246.8740876 (0.05) | -246.7672495 (0.09) | -246.874 (0.05) | -246.767 | |||||||||||||
| Variability | ||||||||||||||||||
| Magnetic | ||||||||||||||||||
| Bd | [MG] | |||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||
| Binarity | ||||||||||||||||||
| B magnitude | 17.46 | |||||||||||||||||
| V magnitude | ||||||||||||||||||
| R magnitude | 16.90 | |||||||||||||||||
| I magnitude | ||||||||||||||||||
| J magnitude | 16.51 (0.02) | 16.32 (0.1) | 16.32 (0.1) | |||||||||||||||
| H magnitude | 15.96 (0.2) | 15.96 (0.2) | 15.96 (0.2) | |||||||||||||||
| K magnitude | 16.02 (0.08) | 16.02 (0.08) | ||||||||||||||||
| u magnitude | 17.90 (0.01) | 17.93 (0.01) | 17.90 (0.02) | 17.90 (0.02) | 17.90 (0.01) | 17.93 (0.01) | 17.93 (0.02) | |||||||||||
| g magnitude | 17.04 (0.005) | 17.05 (0.02) | 17.05 (0.02) | 17.04 (0.005) | 17.05 (0.004) | 17.03 (0.02) | ||||||||||||
| r magnitude | 16.89 (0.005) | 16.88 (0.02) | 16.88 (0.02) | 16.88 (0.003) | 16.89 (0.005) | 16.88 (0.02) | ||||||||||||
| i magnitude | 16.94 (0.006) | 16.94 (0.02) | 16.94 (0.02) | 16.95 (0.003) | 16.95 (0.005) | 16.94 (0.02) | ||||||||||||
| z magnitude | 17.04 (0.01) | 17.05 (0.02) | 17.05 (0.02) | 17.07 (0.003) | 17.08 (0.01) | 17.07 (0.02) | ||||||||||||
| G magnitude | 16.89 (0.004) | 16.91 | 16.89 | 16.89 (0.003) | 16.91 | |||||||||||||
| BP magnitude | 17.08 (0.004) | 17.10 | 17.10 | |||||||||||||||
| RP magnitude | 16.63 (0.006) | 16.64 | 16.64 | |||||||||||||||
| Pan g magnitude | 17.01 (0.009) | 17.01 (0.01) | 17.01 (0.01) | |||||||||||||||
| Pan r magnitude | 16.88 (0.003) | 16.88 (0.003) | 16.88 (0.003) | |||||||||||||||
| Pan i magnitude | 16.95 (0.003) | 16.95 (0.003) | 16.95 (0.003) | |||||||||||||||
| Pan z magnitude | 17.07 (0.003) | 17.07 (0.003) | 17.07 (0.003) | |||||||||||||||
| Pan y magnitude | 17.15 (0.01) | 17.14 (0.01) | 17.14 (0.01) | |||||||||||||||
| 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.