All names: GALEX J144410.2+342113, LAMOST J144410.21+342114.2, FBS B 551, PG1442+346, SDSS J144410.17+342113.3, PG 1442+346, TIC 161662153, FBS 1442+346, Gaia EDR3 1292915830478091008, Gaia DR3 1292915830478091008, 2MASS J14441018+3421131, LAMOST J144410.17+342113.3, CBS 198, Gaia DR2 1292915830478091008
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 14 44 10.16 (0.03) | 14 44 10.16 | 14 44 10.17 (0.03) | ||
| Declination | 34 21 13.24 (0.03) | 34 21 13.64 | 34 21 13.29 (0.03) | ||
| Spectral type | He-sdO | sdOC | |||
| Effective temperature | [K] | 49466.0 (260) | |||
| log(g) | [cgs] | 6.23 (0.02) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.36 (0.05) | 0.18 (0.06) | 0.36 (0.05) | |
| Distance | [pc] | 2755.58 (358) | 5428.88 (1698) | 2755.58 (358) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.036 (0.03) | -3.906 (0.06) | -4.036 (0.03) | |
| Proper motion (declination) | [mas/yr] | -3.336 (0.05) | -3.321 (0.09) | -3.336 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.74 | ||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.56 (0.1) | 16.56 (0.1) | |||
| H magnitude | 16.29 | ||||
| K magnitude | 17.12 | ||||
| u magnitude | 15.30 (0.005) | 15.29 (0.03) | |||
| g magnitude | 15.74 (0.004) | 15.75 (0.01) | |||
| r magnitude | 16.28 (0.005) | 16.27 (0.02) | |||
| i magnitude | 16.64 (0.006) | 16.65 (0.01) | |||
| z magnitude | 16.99 (0.01) | 16.98 (0.02) | |||
| G magnitude | 16.01 (0.003) | 16.03 (0.002) | 16.01 (0.003) | ||
| BP magnitude | 15.84 (0.004) | 15.75 (0.008) | |||
| RP magnitude | 16.33 (0.005) | 16.32 (0.004) | |||
| Pan g magnitude | 15.84 (0.004) | ||||
| Pan r magnitude | 16.29 (0.005) | ||||
| Pan i magnitude | 16.67 (0.002) | ||||
| Pan z magnitude | 16.96 (0.004) | ||||
| Pan y magnitude | 17.16 (0.003) | ||||
| E(B-V) | 0.021 | ||||
* 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.