All names: Gaia DR2 1173321671550500992, 2MASS J14483744+0812228, PG1446+084, PG 1446+084, SDSS J144837.43+081222.6, Gaia EDR3 1173321671550500992, SDSS J144837.44+081222.5, GALEX J144837.4+081222, SDSS J144837.44+081222.54, TIC 457925477, Gaia DR3 1173321671550500992
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 48 37.43 (0.06) | 14 48 37.44 | 14 48 37.48 | 14 48 37.43 (0.08) | 14 48 37.44 (0.06) | ||||
| Declination | 08 12 22.51 (0.05) | 08 12 22.61 | 08 12 23.14 | 08 12 22.52 (0.08) | 08 12 22.62 (0.05) | ||||
| Spectral type | sdB | A/sdB | sdB | ||||||
| Effective temperature | [K] | 30682.0 (824) | 31999.0 (92) | ||||||
| log(g) | [cgs] | 5.63 (0.1) | 5.53 (0.02) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.31 (0.07) | 0.46 (0.1) | 0.46 (0.1) | 0.31 (0.07) | ||||
| Distance | [pc] | 3221.39 (699) | 2164.97 (481) | 2164.75 (481) | 3221.65 (700) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -8.306398307 (0.06) | -8.212 (0.2) | -8.211983307 (0.2) | -8.306 (0.06) | ||||
| Proper motion (declination) | [mas/yr] | -6.874643278 (0.06) | -6.401 (0.2) | -6.400621797 (0.2) | -6.875 (0.06) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.12 | ||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.21 (0.1) | 16.34 (0.009) | |||||||
| H magnitude | 15.88 (0.2) | 16.01 (0.01) | |||||||
| K magnitude | 14.91 | 15.99 (0.03) | |||||||
| u magnitude | 16.14 (0.006) | 16.14 (0.006) | 16.13 (0.02) | 16.14 (0.006) | |||||
| g magnitude | 16.27 (0.004) | 16.27 (0.004) | 16.28 (0.01) | 16.27 (0.004) | |||||
| r magnitude | 16.67 (0.005) | 16.67 (0.005) | 16.67 (0.01) | 16.67 (0.005) | |||||
| i magnitude | 16.85 (0.006) | 16.85 (0.006) | 16.84 (0.02) | 16.85 (0.006) | |||||
| z magnitude | 17.00 (0.01) | 17.00 (0.01) | 16.99 (0.02) | 17.00 (0.01) | |||||
| G magnitude | 16.44 (0.005) | 16.47 (0.003) | 16.47 | 16.44 (0.003) | |||||
| BP magnitude | 16.37 (0.005) | 16.32 (0.01) | 16.32 | ||||||
| RP magnitude | 16.52 (0.005) | 16.53 (0.005) | 16.53 | ||||||
| Pan g magnitude | 16.34 (0.003) | 16.34 (0.003) | |||||||
| Pan r magnitude | 16.64 (0.004) | 16.64 (0.004) | |||||||
| Pan i magnitude | 16.84 (0.005) | 16.84 (0.005) | |||||||
| Pan z magnitude | 16.98 (0.006) | 16.98 (0.006) | |||||||
| Pan y magnitude | 17.04 (0.008) | 17.04 (0.008) | |||||||
| E(B-V) | 0.025 | ||||||||
* 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.