All names: 2SLAQ J144820.30-010833.7, SDSSJ144820.29-010833.6, Gaia EDR3 3650497282753415552, Gaia DR2 3650497282753415552, 2QZ J144820.3-010834, SDSS J144820.29-010833.7, SDSS J144820.30-010833.7, SDSS J144820.30-010833.6, Gaia DR3 3650497282753415552
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Harris et al. 2003 | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 48 20.29 (0.2) | 14 48 20.30 | 14 48 20.29 | 14 48 20.29 (0.2) | 14 48 20.29 (0.2) | 14 48 20.30 | ||||
| Declination | -01 08 33.68 (0.2) | -01 08 33.66 | -01 08 33.60 | -01 08 33.68 (0.2) | -01 08 33.67 (0.2) | -01 08 33.73 | ||||
| Spectral type | sdB | sdB | sdB | SDB | ||||||
| Effective temperature | [K] | 7660.0 (48) | ||||||||
| log(g) | [cgs] | 7.71 (0.1) | ||||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 0.24 (0.3) | 0.30 (0.3) | 0.30 (0.3) | 0.24 (0.3) | |||||
| Distance | [pc] | 4214.58 (4692) | 3364.74 (3492) | 3364.74 (3492) | 4214.08 (4692) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -6.821357627 (0.3) | -7.175 (0.5) | -7.175 (0.5) | -6.821 (0.3) | -6.5 | ||||
| Proper motion (declination) | [mas/yr] | -1.033895635 (0.3) | -0.413 (0.4) | -0.413 (0.4) | -1.034 (0.3) | -5.9 | ||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 18.85 (0.02) | 18.85 (0.02) | 18.86 | 18.85 (0.02) | 18.87 (0.03) | |||||
| g magnitude | 18.70 (0.008) | 18.70 (0.008) | 18.74 | 18.71 (0.008) | 18.73 (0.01) | |||||
| r magnitude | 18.84 (0.01) | 18.84 (0.01) | 18.83 | 18.84 (0.01) | 18.84 (0.01) | |||||
| i magnitude | 18.89 (0.01) | 18.89 (0.01) | 18.89 | 18.90 (0.01) | 18.89 (0.02) | |||||
| z magnitude | 18.99 (0.04) | 18.99 (0.04) | 18.97 | 18.99 (0.04) | 18.96 (0.04) | |||||
| G magnitude | 18.72 (0.04) | 18.77 (0.005) | 18.77 | 18.72 (0.004) | ||||||
| BP magnitude | 18.81 (0.04) | 18.80 (0.04) | 18.80 | |||||||
| RP magnitude | 18.61 (0.03) | 18.64 (0.05) | 18.64 | |||||||
| Pan g magnitude | 18.75 (0.006) | 18.75 (0.006) | ||||||||
| Pan r magnitude | 18.81 (0.008) | 18.81 (0.008) | ||||||||
| Pan i magnitude | 18.91 (0.007) | 18.91 (0.007) | ||||||||
| Pan z magnitude | 19.01 (0.01) | 19.01 (0.01) | ||||||||
| Pan y magnitude | 19.05 (0.03) | 19.05 (0.03) | ||||||||
| E(B-V) | 0.047 | |||||||||
* 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.