All names: SDSS J234421.57+402521.6, WISE J234421.56+402521.7, 2MASS J23442155+4025216, Gaia DR3 1921168528251457664, Gaia DR2 1921168528251457664, UCAC4 653-121865, FBS2341+401, UCAC2 45910326, Gaia EDR3 1921168528251457664, FBS 2341+401, GALEX J234421.4+402521, FBS B 200, WISEA J234421.57+402521.7, TIC 352685786
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 23 44 21.58 (0.02) | 23 44 21.54 | 23 44 21.57 (0.02) | ||
| Declination | 40 25 21.70 (0.02) | 40 25 22.40 | 40 25 21.67 (0.02) | ||
| Spectral type | sd | sdOA | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.13 (0.03) | 1.08 (0.05) | 1.13 (0.03) | |
| Distance | [pc] | 885.58 (27) | 927.21 (43) | 885.58 (27) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 4.021 (0.03) | 4.043 (0.07) | 4.021 (0.03) | |
| Proper motion (declination) | [mas/yr] | 2.097 (0.03) | 2.104 (0.05) | 2.097 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.70 (0.04) | ||||
| V magnitude | 14.83 (0.04) | ||||
| R magnitude | 15.13 (0.05) | ||||
| I magnitude | |||||
| J magnitude | 15.31 (0.05) | 15.31 (0.05) | |||
| H magnitude | 15.24 (0.09) | 15.24 (0.09) | |||
| K magnitude | 15.59 (0.2) | 15.59 (0.2) | |||
| u magnitude | 14.37 (0.004) | 14.41 (0.01) | |||
| g magnitude | 14.58 (0.004) | 14.61 (0.01) | |||
| r magnitude | 14.97 (0.004) | 14.98 (0.008) | |||
| i magnitude | 15.27 (0.005) | 15.28 (0.009) | |||
| z magnitude | 15.54 (0.006) | 15.53 (0.02) | |||
| G magnitude | 14.78 (0.003) | 14.80 (0.0005) | 14.78 (0.003) | ||
| BP magnitude | 14.69 (0.003) | 14.66 (0.005) | |||
| RP magnitude | 14.96 (0.004) | 14.97 (0.003) | |||
| Pan g magnitude | 14.65 (0.003) | ||||
| Pan r magnitude | 14.99 (0.003) | ||||
| Pan i magnitude | 15.30 (0.003) | ||||
| Pan z magnitude | 15.54 (0.003) | ||||
| Pan y magnitude | 15.68 (0.009) | ||||
| E(B-V) | 0.104 | ||||
* 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.