All names: 2MASS J12334759+1253454, SDSS J123347.60+125346.0, LAMOST J123347.60+125346.0, Gaia DR3 3931756484602030848, TIC 87533733, Gaia EDR3 3931756484602030848, SDSS J123347.60+125346.1, WDJ123347.59+125345.80, GALEX J123347.6+125346, Gaia DR2 3931756484602030848, WD 1231+131, J1233+1253, A3 434
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | Coutu et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Guo et al. 2015 | 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 | 12 33 47.61 (0.07) | 12 33 47.60 | 12 33 47.59 | 12 33 47.61 (0.1) | 12 33 47.61 | 12 33 47.59 (0.07) | 12 33 47.61 | 12 33 47.57 | 12 33 47.60 | |||||||||
| Declination | 12 53 46.72 (0.06) | 12 53 46.07 | 12 53 45.80 | 12 53 46.69 (0.07) | 12 53 46.72 | 12 53 45.80 (0.06) | 12 53 46.69 | 12 53 39.84 | 12 53 46.07 | |||||||||
| Spectral type | DQ | DQ | DQ+M | DQ | DQ: | DQ+M | DQ | DQ7.0 | DQZ: | DQ | ||||||||
| Effective temperature | [K] | 6698.0 (15) | 6807.0 (112) | 7114.0 | 6850.0 | 7152.0 | 6816.0 (52) | 10080.0 (2) | ||||||||||
| log(g) | [cgs] | 7.97 (0.008) | 8.04 | 8.16 | 8.05 | 8.00 (0) | 8.01 (0.01) | 9.89 (0.2) | ||||||||||
| Mass | [M☉] | 0.556 (0.007) | 0.5953 | 0.693 | 0.606 | 0.581 (0.01) | ||||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||||
| Cooling age | [Gyr] | 1.7400 | 1.7600 | 1.8650 | 1.7870 | |||||||||||||
| log(H/He) | ||||||||||||||||||
| log(C/He) | -6.65 | -6.5222 (0.04) | -6.36 (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] | 19.85 (0.09) | 19.86 (0.1) | 19.86 | 19.86 (0.1) | 19.85 | 19.85 (0.09) | 19.86 (0.1) | ||||||||||
| Distance | [pc] | 50.37 (0.2) | 50.35 (0.3) | 50.36 (0.3) | 50.36 (0.3) | 50.37 | 50.37 (0.2) | 50.36 (0.3) | ||||||||||
| Composition | He | He | He | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 15.23139445 (0.1) | 14.96452941 (0.2) | 15.231 (0.1) | 14.965 | |||||||||||||
| Proper motion (declination) | [mas/yr] | 57.13078163 (0.1) | 57.09399795 (0.1) | 57.131 (0.1) | 57.094 | |||||||||||||
| Variability | ||||||||||||||||||
| Magnetic | ||||||||||||||||||
| Bd | [MG] | |||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||
| Binarity | ||||||||||||||||||
| B magnitude | 16.90 | |||||||||||||||||
| V magnitude | 17.20 | |||||||||||||||||
| R magnitude | ||||||||||||||||||
| I magnitude | ||||||||||||||||||
| J magnitude | 16.61 (0.01) | 16.57 (0.1) | ||||||||||||||||
| H magnitude | 16.48 (0.02) | 16.15 (0.2) | ||||||||||||||||
| K magnitude | 16.40 (0.03) | 16.40 (0.03) | ||||||||||||||||
| u magnitude | 17.80 (0.01) | 17.80 (0.01) | 17.80 (0.01) | 17.80 (0.01) | 17.85 (0.03) | |||||||||||||
| g magnitude | 17.29 (0.005) | 17.29 (0.005) | 17.29 (0.005) | 17.29 (0.01) | ||||||||||||||
| r magnitude | 17.13 (0.005) | 17.12 (0.005) | 17.12 (0.005) | 17.14 (0.02) | ||||||||||||||
| i magnitude | 17.13 (0.006) | 17.13 (0.006) | 17.13 (0.006) | 17.17 (0.02) | ||||||||||||||
| z magnitude | 17.20 (0.01) | 17.20 (0.01) | 17.20 (0.01) | 17.23 (0.02) | ||||||||||||||
| G magnitude | 17.10 (0.007) | 17.12 | 17.10 | 17.10 (0.003) | 17.12 | |||||||||||||
| BP magnitude | 17.28 (0.007) | 17.28 | 17.28 | |||||||||||||||
| RP magnitude | 16.80 (0.008) | 16.81 | 16.81 | |||||||||||||||
| Pan g magnitude | 17.29 (0.003) | 17.29 (0.002) | ||||||||||||||||
| Pan r magnitude | 17.13 (0.005) | 17.13 (0.006) | ||||||||||||||||
| Pan i magnitude | 17.13 (0.002) | 17.13 (0.002) | ||||||||||||||||
| Pan z magnitude | 17.18 (0.006) | 17.18 (0.005) | ||||||||||||||||
| Pan y magnitude | 17.19 (0.009) | 17.19 (0.008) | ||||||||||||||||
| E(B-V) | 0.002 | |||||||||||||||||
* 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.