All names: SDSS J125834.48+301915.2, SDSS J125834.49+301915.2, WD 1256+305, Gaia EDR3 1464640782023043072, LAMOST J125834.48+301915.2, LB 23, Gaia DR2 1464640782023043072, CBS 327, A2 256, SDSS J125834.48+301915.1, OMHR 140804, US 75, [BCF91] 224, GALEX J125834.5+301915, Gaia DR3 1464640782023043072, SDSS J125834.48+301915.3, OMHR J125834.53+301914.5, SDSS J125834.47+301915.3, PB 3173
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 58 34.48 (0.09) | 12 58 34.48 | 12 58 34.48 (0.1) | 12 58 34.48 | 12 58 34.49 (0.09) | 12 58 34.03 | 12 58 34.49 | |||||
| Declination | 30 19 15.55 (0.08) | 30 19 15.13 | 30 19 15.54 (0.07) | 30 19 15.55 | 30 19 15.23 (0.08) | 30 19 13.08 | 30 19 15.24 | |||||
| Spectral type | DA | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 24856.0 (1069) | 25378.0 (230) | |||||||||
| log(g) | [cgs] | 7.77 (0.06) | 7.88 (0.03) | |||||||||
| Mass | [M☉] | 0.516 (0.04) | 0.577 (0.01) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 3.12 (0.1) | 3.11 (0.1) | 3.12 | 3.12 (0.1) | |||||||
| Distance | [pc] | 320.93 (11) | 321.98 (14) | 320.93 | 320.92 (11) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -7.620252392 (0.1) | -7.449382862 (0.2) | -7.62 (0.1) | ||||||||
| Proper motion (declination) | [mas/yr] | 20.07850535 (0.1) | 20.14756489 (0.1) | 20.079 (0.1) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 17.00 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.29 (0.009) | 17.29 (0.009) | 17.33 (0.03) | |||||||||
| g magnitude | 17.38 (0.005) | 17.38 (0.005) | 17.44 (0.02) | |||||||||
| r magnitude | 17.81 (0.006) | 17.81 (0.006) | 17.83 (0.02) | |||||||||
| i magnitude | 18.15 (0.009) | 18.15 (0.009) | 18.16 (0.02) | |||||||||
| z magnitude | 18.44 (0.02) | 18.45 (0.02) | 18.43 (0.04) | |||||||||
| G magnitude | 17.60 (0.008) | 17.63 | 17.60 | 17.60 (0.003) | ||||||||
| BP magnitude | 17.52 (0.008) | 17.48 | ||||||||||
| RP magnitude | 17.84 (0.01) | 17.84 | ||||||||||
| Pan g magnitude | 17.43 (0.006) | |||||||||||
| Pan r magnitude | 17.81 (0.003) | |||||||||||
| Pan i magnitude | 18.16 (0.005) | |||||||||||
| Pan z magnitude | 18.42 (0.007) | |||||||||||
| Pan y magnitude | 18.61 (0.02) | |||||||||||
| E(B-V) | 0.013 | |||||||||||
* 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.