All names: WIRED J153447.54+414559.3, WD 1533+419, TIC 148786487, 2MASS J15344760+4145587, LSPM J1534+4145, GALEX J153447.5+414600, J1534+4145, Gaia DR2 1390295486540598656, USNO-B1.0 1317-00287493, SDSS J153447.54+414559.4, WDJ153447.59+414559.15, SDSS J153447.54+414559.3, SDSS J153447.54+414559.5, Gaia DR3 1390295486540598656, J1534+4146, Gaia EDR3 1390295486540598656
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Coutu et al. 2019 | Gaia DR2 | Stilism | Koester et al. 2006 | 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 | 15 34 47.38 (0.05) | 15 34 47.54 | 15 34 47.59 | 15 34 47.38 (0.05) | 15 34 47.38 | 15 34 47.59 (0.05) | 15 34 47.38 | 15 34 47.69 | 15 34 47.54 | |||||||
| Declination | 41 46 00.82 (0.05) | 41 45 59.50 | 41 45 59.15 | 41 46 00.77 (0.06) | 41 46 00.82 | 41 45 59.14 (0.05) | 41 46 00.77 | 41 45 57.60 | 41 45 59.39 | |||||||
| Spectral type | DQZ | DQZ | DQZ | DQZ | DZ | DQZ | DQZ6.5 | DQZ | DZ | |||||||
| Effective temperature | [K] | 7785.0 (52) | 7871.0 (38) | 7684.0 (172) | 7804.0 | 7696.0 (76) | 10088.0 (18) | |||||||||
| log(g) | [cgs] | 7.95 (0.01) | 7.97 (0.009) | 7.92 | 8.00 (0) | 7.97 (0.02) | 9.64 (0.3) | |||||||||
| Mass | [M☉] | 0.544 (0.009) | 0.56 (0.007) | 0.5298 | 0.559 (0.01) | |||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||
| Cooling age | [Gyr] | 1.1700 | 1.1100 | |||||||||||||
| log(H/He) | ||||||||||||||||
| log(C/He) | -6.04 | -5.89 | -6.1014 (0.07) | -5.92 (0.02) | ||||||||||||
| 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] | 15.18 (0.06) | 15.19 (0.07) | 15.19 | 15.19 (0.07) | 15.18 | 15.18 (0.06) | 15.19 (0.07) | ||||||||
| Distance | [pc] | 65.86 (0.2) | 65.83 (0.3) | 65.84 (0.3) | 65.84 (0.3) | 65.86 | 65.86 (0.2) | 65.84 (0.3) | ||||||||
| Composition | He | He | He | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -146.92059 (0.05) | -146.903046 (0.1) | -146.921 (0.06) | -146.903046 | |||||||||||
| Proper motion (declination) | [mas/yr] | 104.7823957 (0.07) | 104.6089967 (0.1) | 104.782 (0.07) | 104.6089967 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | ||||||||||||||||
| B magnitude | 17.50 | |||||||||||||||
| V magnitude | ||||||||||||||||
| R magnitude | 17.10 | |||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 16.93 (0.02) | 16.64 (0.1) | ||||||||||||||
| H magnitude | ||||||||||||||||
| K magnitude | ||||||||||||||||
| u magnitude | 17.55 (0.01) | 17.51 (0.01) | 17.55 (0.01) | 17.55 (0.01) | 17.55 (0.02) | |||||||||||
| g magnitude | 17.22 (0.004) | 17.22 (0.004) | 17.22 (0.004) | 17.25 (0.03) | ||||||||||||
| r magnitude | 17.20 (0.005) | 17.20 (0.005) | 17.20 (0.005) | 17.22 (0.02) | ||||||||||||
| i magnitude | 17.27 (0.006) | 17.27 (0.006) | 17.27 (0.006) | 17.27 (0.02) | ||||||||||||
| z magnitude | 17.38 (0.01) | 17.38 (0.01) | 17.38 (0.01) | 17.39 (0.03) | ||||||||||||
| G magnitude | 17.14 (0.006) | 17.17 | 17.14 | 17.14 (0.003) | 17.17 | |||||||||||
| BP magnitude | 17.25 (0.006) | 17.24 | 17.24 | |||||||||||||
| RP magnitude | 16.96 (0.005) | 16.96 | 16.96 | |||||||||||||
| Pan g magnitude | 17.23 (0.006) | 17.23 (0.006) | ||||||||||||||
| Pan r magnitude | 17.19 (0.004) | 17.19 (0.005) | ||||||||||||||
| Pan i magnitude | 17.29 (0.004) | 17.29 (0.004) | ||||||||||||||
| Pan z magnitude | 17.40 (0.003) | 17.40 (0.003) | ||||||||||||||
| Pan y magnitude | 17.50 (0.01) | 17.50 (0.01) | ||||||||||||||
| E(B-V) | 0.009 | |||||||||||||||
* 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.