All names: UCAC4 653-121865, Gaia DR3 1921168528251457664, TIC 352685786, GALEX J234421.4+402521, Gaia EDR3 1921168528251457664, FBS 2341+401, WISE J234421.56+402521.7, Gaia DR2 1921168528251457664, WISEA J234421.57+402521.7, FBS B 200, 2MASS J23442155+4025216, FBS2341+401, UCAC2 45910326, SDSS J234421.57+402521.6
| 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.