All names: LAMOST J012340.68+300232.1, Gaia EDR3 309391787394140288, SDSS J012340.69+300232.1, SDSS J012340.68+300232.1, Gaia DR2 309391787394140288, Gaia DR3 309391787394140288, 2MASS J01234069+3002323, SDSS J012340.69+300232.16, SDSSJ012340.69+300232.16
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 23 40.69 (0.05) | 01 23 40.69 | 01 23 40.69 | 01 23 40.69 (0.09) | 01 23 40.69 (0.05) | ||||
| Declination | 30 02 32.16 (0.04) | 30 02 32.16 | 30 02 32.16 | 30 02 32.16 (0.06) | 30 02 32.24 (0.04) | ||||
| Spectral type | sdB | sdB | sdB | ||||||
| Effective temperature | [K] | 29260.0 (340) | 29229.0 (102) | ||||||
| log(g) | [cgs] | 5.34 (0.05) | 5.30 (0.02) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.37 (0.07) | 0.32 (0.1) | 0.32 (0.1) | 0.37 (0.07) | ||||
| Distance | [pc] | 2690.78 (501) | 3116.24 (1024) | 3116.40 (1024) | 2691.07 (501) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 5.987556844 (0.06) | 6.228 (0.1) | 6.2284046 (0.1) | 5.988 (0.06) | ||||
| Proper motion (declination) | [mas/yr] | -5.00339666 (0.05) | -4.77 (0.1) | -4.770194844 (0.1) | -5.003 (0.05) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.42 (0.1) | 16.42 (0.1) | |||||||
| H magnitude | 15.84 (0.2) | 15.84 (0.2) | |||||||
| K magnitude | 15.29 | ||||||||
| u magnitude | 16.40 (0.006) | 16.40 (0.006) | 16.40 (0.02) | 16.40 (0.006) | |||||
| g magnitude | 16.37 (0.004) | 16.37 (0.004) | 16.39 (0.02) | 16.37 (0.004) | |||||
| r magnitude | 16.65 (0.004) | 16.65 (0.004) | 16.66 (0.02) | 16.65 (0.004) | |||||
| i magnitude | 16.82 (0.005) | 16.81 (0.005) | 16.82 (0.01) | 16.81 (0.005) | |||||
| z magnitude | 16.94 (0.01) | 16.93 (0.01) | 16.92 (0.02) | 16.93 (0.01) | |||||
| G magnitude | 16.47 (0.003) | 16.50 (0.002) | 16.50 | 16.47 (0.003) | |||||
| BP magnitude | 16.45 (0.003) | 16.41 (0.01) | 16.41 | ||||||
| RP magnitude | 16.49 (0.006) | 16.49 (0.006) | 16.49 | ||||||
| Pan g magnitude | 16.41 (0.003) | 16.41 (0.003) | |||||||
| Pan r magnitude | 16.66 (0.002) | 16.66 (0.002) | |||||||
| Pan i magnitude | 16.82 (0.004) | 16.82 (0.004) | |||||||
| Pan z magnitude | 16.96 (0.002) | 16.96 (0.002) | |||||||
| Pan y magnitude | 17.03 (0.01) | 17.03 (0.01) | |||||||
| E(B-V) | 0.046 | ||||||||
* 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.