All names: SDSS J130822.60+121333.17, SDSS J130822.60+121333.2, SDSS J130822.60+121333.1, Gaia EDR3 3737434090908977280, WDS J13084+1214A, SDSS J130822.63+121333.5, GALEX J130822.6+121333, Gaia DR3 3737434090908977280, ** SKF 2712A, Gaia DR2 3737434090908977280
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 08 22.58 (0.1) | 13 08 22.63 | 13 08 22.58 (0.2) | 13 08 22.58 | 13 08 22.64 (0.1) | |||||
| Declination | 12 13 33.02 (0.1) | 12 13 33.59 | 12 13 33.04 (0.2) | 12 13 33.02 | 12 13 33.77 (0.1) | |||||
| Spectral type | DB+M | DB | DB | DB+MS | ||||||
| Effective temperature | [K] | 17386.0 (100) | 10400.0 (223) | |||||||
| log(g) | [cgs] | 7.87 (0.008) | 6.75 (0.06) | |||||||
| Mass | [M☉] | 0.156 (0.02) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 4.75 (0.1) | 4.77 (0.2) | 4.75 | 4.75 (0.1) | |||||
| Distance | [pc] | 210.44 (6) | 209.51 (10) | 210.44 | 210.44 (6) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -59.08325653 (0.2) | -58.64940959 (0.5) | -59.083 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -46.54003106 (0.2) | -45.30530763 (0.3) | -46.54 (0.2) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | |||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 17.02 (0.008) | 17.03 (0.01) | 17.02 (0.008) | |||||||
| g magnitude | 17.07 (0.004) | 17.13 (0.02) | 17.07 (0.004) | |||||||
| r magnitude | 17.28 (0.005) | 17.32 (0.02) | 17.28 (0.005) | |||||||
| i magnitude | 17.12 (0.005) | 17.30 (0.02) | 17.12 (0.005) | |||||||
| z magnitude | 16.55 (0.008) | 16.68 (0.02) | 16.55 (0.008) | |||||||
| G magnitude | 17.28 (0.006) | 17.26 | 17.28 | 17.28 (0.003) | ||||||
| BP magnitude | 17.15 (0.006) | 17.12 | ||||||||
| RP magnitude | 16.66 (0.01) | 16.67 | ||||||||
| Pan g magnitude | 17.11 (0.005) | |||||||||
| Pan r magnitude | 17.35 (0.006) | |||||||||
| Pan i magnitude | 17.29 (0.02) | |||||||||
| Pan z magnitude | 16.82 (0.02) | |||||||||
| Pan y magnitude | 16.40 (0.01) | |||||||||
| E(B-V) | 0.020 | |||||||||
* 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.