All names: GALEX J110901.0+454310, Gaia EDR3 782414948226881536, SDSS J110901.01+454309.6, Gaia DR3 782414948226881536, CSO 1138, SDSS J110901.02+454309.7, Gaia DR2 782414948226881536
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Koester & Kepler 2015 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 09 00.99 (0.06) | 11 09 00.99 (0.08) | 11 09 00.99 | 11 09 01.03 (0.06) | ||||
| Declination | 45 43 09.54 (0.1) | 45 43 09.55 (0.2) | 45 43 09.54 | 45 43 09.77 (0.1) | ||||
| Spectral type | DB | DB | DB | |||||
| Effective temperature | [K] | 14577.0 (45) | 14460.0 (439) | |||||
| log(g) | [cgs] | 8.00 (0) | 8.17 (0.04) | |||||
| Mass | [M☉] | 0.692 (0.04) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | <-5.77 | |||||||
| log(C/He) | ||||||||
| log(Ca/He) | <-8.37 | |||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 5.64 (0.1) | 5.41 (0.3) | 5.64 | 5.64 (0.1) | |||
| Distance | [pc] | 177.26 (3) | 184.97 (9) | 199.00 | 177.26 | 177.26 (3) | ||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -28.45263309 (0.07) | -28.562 (0.2) | -28.453 (0.07) | ||||
| Proper motion (declination) | [mas/yr] | -14.46138241 (0.1) | -14.572 (0.3) | -14.461 (0.1) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 17.70 (0.01) | |||||||
| g magnitude | 17.72 (0.005) | |||||||
| r magnitude | 18.00 (0.007) | |||||||
| i magnitude | 18.22 (0.009) | |||||||
| z magnitude | 18.44 (0.03) | |||||||
| G magnitude | 17.85 (0.008) | 17.88 | 17.85 | 17.85 (0.003) | ||||
| BP magnitude | 17.82 (0.008) | 17.78 | ||||||
| RP magnitude | 17.95 (0.01) | 17.91 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.011 | |||||||
* 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.