All names: LSPM J1333+0016, LP 618-6, SDSS J133359.84+001655.0, SDSS J133359.85+001654.8, MGC 47651, SDSS J133359.86+001654.8, Gaia DR3 3662951038644235776, USNO-B1.0 0902-00222114, SDSS J133359.83+001655.0, Gaia EDR3 3662951038644235776, 2QZ J133400.1+001650, J1333+0016, Gaia DR2 3662951038644235776, WDJ133359.84+001655.03, NLTT 34474, WD 1331+005, GSC2U J133400.0+001654
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2026b | Kilic et al. 2025 | Caron et al. 2023 | Blouin & Dufour 2019 | Gaia DR2 | Stilism | Ferrario et al. 2015 | Harris et al. 2003 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 33 59.49 (0.1) | 13 33 59.84 | 13 33 59.50 (0.3) | 13 33 59.49 | 13 33 59.84 (0.1) | 13 33 59.50 | 13 33 58.58 | ||||||||||
| Declination | 00 16 58.39 (0.1) | 00 16 55.02 | 00 16 58.29 (0.2) | 00 16 58.39 | 00 16 55.03 (0.1) | 00 16 58.29 | 00 16 50.52 | ||||||||||
| Spectral type | DQH | DQH | DQ | DQpec | DQB | DQH | DQ | DQH | pecDQ | DQH | DZ | ||||||
| Effective temperature | [K] | 5566.0 (13) | 5180.0 (17) | 5156.0 (13) | 5823.0 (71) | 5906.0 (29) | |||||||||||
| log(g) | [cgs] | 8.66 (0.01) | 8.52 (0.01) | 8.49 (0.01) | 8.74 (0.04) | 8.77 (0.01) | |||||||||||
| Mass | [M☉] | 1.005 (0.009) | 0.912 (0.01) | 0.894 (0.01) | 1.052 (0.02) | 1.068 (0.008) | |||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||
| Cooling age | [Gyr] | 7.4500 | |||||||||||||||
| log(H/He) | |||||||||||||||||
| log(C/He) | -5.73 | -6.32 | -6.28 | -5.13 (0.05) | |||||||||||||
| log(Ca/He) | |||||||||||||||||
| log(Ca/H) | |||||||||||||||||
| log(Li/He) | |||||||||||||||||
| log(Be/He) | |||||||||||||||||
| log(B/He) | |||||||||||||||||
| 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(K/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] | 24.45 (0.2) | 24.45 (0.3) | 24.45 (0.4) | 24.45 (0.4) | 24.45 | 24.45 (0.2) | 24.45 (0.4) | |||||||||
| Distance | [pc] | 40.89 (0.3) | 40.90 (0.6) | 40.89 (0.6) | 40.89 (0.6) | 40.89 | 40.89 (0.3) | 40.89 (0.6) | |||||||||
| Composition | He | He | He | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -331.867865 (0.2) | -332.0224074 (0.5) | -331.868 (0.2) | -332.022 | ||||||||||||
| Proper motion (declination) | [mas/yr] | 209.9563771 (0.1) | 209.9468324 (0.3) | 209.956 (0.1) | 209.947 | ||||||||||||
| Variability | |||||||||||||||||
| Magnetic | yes | yes | yes | ||||||||||||||
| Bd | [MG] | ||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||
| Binarity | |||||||||||||||||
| B magnitude | 19.51 | ||||||||||||||||
| V magnitude | |||||||||||||||||
| R magnitude | 18.50 | ||||||||||||||||
| I magnitude | |||||||||||||||||
| J magnitude | 17.38 (0.01) | ||||||||||||||||
| H magnitude | 17.05 (0.02) | ||||||||||||||||
| K magnitude | 16.73 (0.03) | ||||||||||||||||
| u magnitude | 19.11 (0.02) | 19.09 (0.02) | 19.11 (1) | 19.05 | 19.11 (0.02) | 19.13 (0.02) | 19.06 | ||||||||||
| g magnitude | 19.40 (0.01) | 19.40 (0.01) | 19.41 | 19.40 (0.01) | 19.41 (0.01) | 19.41 | |||||||||||
| r magnitude | 18.37 (0.008) | 18.37 (0.008) | 18.32 | 18.37 (0.008) | 18.37 (0.008) | 18.33 | |||||||||||
| i magnitude | 18.18 (0.009) | 18.18 (0.009) | 18.06 | 18.18 (0.009) | 18.09 (0.009) | 18.07 | |||||||||||
| z magnitude | 18.23 (0.03) | 18.23 (0.03) | 18.15 | 18.23 (0.03) | 18.23 (0.03) | 18.16 | |||||||||||
| G magnitude | 18.48 (0.03) | 18.53 | 18.48 | 18.48 (0.004) | 18.53 | ||||||||||||
| BP magnitude | 18.91 (0.03) | 18.82 | 18.82 | ||||||||||||||
| RP magnitude | 17.83 (0.02) | 17.78 | 17.78 | ||||||||||||||
| Pan g magnitude | 19.50 (0.01) | 19.50 (0.01) | 19.50 (0.01) | ||||||||||||||
| Pan r magnitude | 18.36 (0.005) | 18.36 (0.005) | 18.36 (0.005) | ||||||||||||||
| Pan i magnitude | 18.12 (0.009) | 18.12 (0.009) | 18.12 (0.009) | ||||||||||||||
| Pan z magnitude | 18.20 (0.01) | 18.20 (0.01) | 18.20 (0.01) | ||||||||||||||
| Pan y magnitude | 18.21 (0.02) | 18.21 (0.02) | 18.21 (0.02) | ||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||
* 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.