All names: GSC 03315-01807, USNO-B1.0 1374-00092676, GALEXJ032139.63+472718.83, Cl Melotte 20 488, GSC2.3 NCI0000926, 2MASS J03213962+4727187, FBFTA Per II 54, GSC2 N3331020926, [VKN2011] J032139.8+472717, UCAC2 47605636, Gaia DR3 435211617384833536, GALEX J032139.8+472716, GALEX J032139.8+472718, TIC 384992041, TYC 3315-1807-1, GALEX J032139.6+472718, Gaia DR2 435211617384833536, UCAC3 275-49285
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 03 21 39.63 | 03 21 39.63 (0.03) | ||
| Declination | 47 27 18.83 | 47 27 18.80 (0.02) | ||
| Spectral type | sdB+dM | sdB | ||
| Effective temperature | [K] | 27990.0 (460) | ||
| log(g) | [cgs] | 5.34 (0.07) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 3.76 (0.06) | 3.80 (0.03) | |
| Distance | [pc] | 265.77 (4) | 263.13 (2) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 58.796 (0.1) | 58.716 (0.04) | |
| Proper motion (declination) | [mas/yr] | -8.241 (0.09) | -8.208 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 11.54 (0.07) | |||
| V magnitude | 11.73 (0.1) | |||
| R magnitude | 11.83 (0.04) | |||
| I magnitude | 11.55 (0.1) | |||
| J magnitude | 11.81 (0.02) | 11.81 (0.02) | ||
| H magnitude | 11.86 (0.03) | 11.86 (0.03) | ||
| K magnitude | 11.89 (0.03) | 11.89 (0.03) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 11.57 (0.002) | 11.56 (0.003) | ||
| BP magnitude | 11.49 (0.008) | |||
| RP magnitude | 11.62 (0.01) | |||
| Pan g magnitude | 11.56 | |||
| Pan r magnitude | 11.82 | |||
| Pan i magnitude | 12.04 | |||
| Pan z magnitude | 12.22 | |||
| Pan y magnitude | 12.31 (0.02) | |||
| E(B-V) | 0.103 | |||
* 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.