All names: PSO J193.1889+19.7195, Gaia EDR3 3942041105914664832, LSPM J1252+1943, Gaia DR3 3942041105914664832, Gaia DR2 3942041105914664832, GALEX J125245.4+194311, 2MASS J12524550+1943118, NLTT 32172, LP 436-24, USNO-B1.0 1097-00208031, WIRED J125245.43+194311.2, SDSS J125245.44+194311.2, J1252+1943, WDJ125245.50+194311.95, SDSS J125245.43+194311.2, TIC 409347198
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | Coutu et al. 2019 | Blouin et al. 2019 | Gaia DR2 | Stilism | Simbad | Gentile Fusillo et al. 2018 | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 52 45.29 (0.2) | 12 52 45.44 | 12 52 45.50 | 12 52 45.30 (0.3) | 12 52 45.50 (0.2) | 12 52 45.30 | 12 52 45.44 | ||||||
| Declination | 19 43 09.85 (0.2) | 19 43 11.21 | 19 43 11.95 | 19 43 09.92 (0.3) | 19 43 11.94 (0.2) | 19 43 09.92 | 19 43 11.24 | ||||||
| Spectral type | DQ | DQ | DQ | DQ | DQ | DQ | |||||||
| Effective temperature | [K] | 6774.0 (23) | 6863.0 (122) | 6625.0 (65) | 6302.0 (6) | ||||||||
| log(g) | [cgs] | 7.49 (0.04) | 7.52 | 7.44 (0.06) | 10.00 (0.003) | ||||||||
| Mass | [M☉] | 0.319 (0.02) | 0.3311 | 0.303 (0.02) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.9500 | 0.9420 | 0.9530 (0.04) | |||||||||
| log(H/He) | |||||||||||||
| log(C/He) | -6.57 | -6.4947 (0.04) | -6.77 | ||||||||||
| 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] | 12.87 (0.3) | 11.90 (0.4) | 11.90 | 11.89 (0.4) | 11.90 (0.4) | 12.87 (0.3) | 11.90 (0.4) | |||||
| Distance | [pc] | 77.69 (2) | 84.03 (3) | 84.07 (3) | 84.07 (3) | 84.07 (3) | 77.69 (2) | 84.07 (3) | |||||
| Composition | He | He | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -186.2414107 (0.3) | -184.14453 (0.7) | -186.241 (0.3) | -184.14453 | ||||||||
| Proper motion (declination) | [mas/yr] | -130.4395001 (0.4) | -131.3867078 (0.6) | -130.44 (0.4) | -131.3867078 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 18.70 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | 17.80 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 17.06 (0.02) | 16.78 (0.1) | 16.78 (0.1) | ||||||||||
| H magnitude | 17.04 (0.08) | 17.04 (0.08) | |||||||||||
| K magnitude | |||||||||||||
| u magnitude | 18.17 (0.01) | 18.19 (0.01) | 18.17 (0.01) | 18.18 (0.01) | 18.20 (0.02) | ||||||||
| g magnitude | 17.74 (0.005) | 17.77 (0.004) | 17.76 (0.006) | 17.76 (0.02) | |||||||||
| r magnitude | 17.61 (0.006) | 17.63 (0.007) | 17.61 (0.006) | 17.64 (0.02) | |||||||||
| i magnitude | 17.59 (0.006) | 17.62 (0.002) | 17.60 (0.007) | 17.60 (0.01) | |||||||||
| z magnitude | 17.65 (0.02) | 17.67 (0.006) | 17.64 (0.02) | 17.64 (0.02) | |||||||||
| G magnitude | 17.79 (0.009) | 17.71 | 17.79 (0.007) | 17.71 | |||||||||
| BP magnitude | 17.78 (0.009) | 17.77 | 17.77 | ||||||||||
| RP magnitude | 17.30 (0.01) | 17.29 | 17.29 | ||||||||||
| Pan g magnitude | 17.77 (0.004) | 17.77 (0.004) | 17.77 (0.004) | ||||||||||
| Pan r magnitude | 17.63 (0.007) | 17.63 (0.007) | 17.63 (0.007) | ||||||||||
| Pan i magnitude | 17.62 (0.002) | 17.62 (0.002) | 17.62 (0.002) | ||||||||||
| Pan z magnitude | 17.67 (0.006) | 17.67 (0.006) | 17.67 (0.006) | ||||||||||
| Pan y magnitude | 17.72 (0.01) | 17.72 (0.01) | 17.72 (0.01) | ||||||||||
| E(B-V) | 0.003 | ||||||||||||
* 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.