All names: HS 0457+0907, GALEX J050018.9+091204, 2MASS J05001894+0912041, Gaia EDR3 3291164582009541376, TIC 450045402, Gaia DR3 3291164582009541376, GALEX J050018.9+091203, Gaia DR2 3291164582009541376, UCAC2 34964675, UCAC4 497-009131, HS0457+0907
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 05 00 18.96 (0.04) | 05 00 18.90 | 05 00 18.94 (0.04) | ||
| Declination | 09 12 04.10 (0.02) | 09 12 04.60 | 09 12 04.24 (0.02) | ||
| Spectral type | sdOB | sdOB | |||
| Effective temperature | [K] | 35400.0 (900) | |||
| log(g) | [cgs] | 5.80 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.30 (0.05) | 1.40 (0.07) | 1.30 (0.05) | |
| Distance | [pc] | 768.05 (27) | 716.23 (37) | 768.05 (27) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 12.992 (0.04) | 13.066 (0.1) | 12.992 (0.04) | |
| Proper motion (declination) | [mas/yr] | -8.899 (0.03) | -8.83 (0.07) | -8.899 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.24 (0.01) | ||||
| V magnitude | 14.43 (0.2) | ||||
| R magnitude | 14.58 (0.05) | ||||
| I magnitude | |||||
| J magnitude | 14.71 (0.04) | 14.71 (0.04) | |||
| H magnitude | 14.95 (0.08) | 14.95 (0.08) | |||
| K magnitude | 14.84 (0.1) | 14.84 (0.1) | |||
| u magnitude | |||||
| g magnitude | 14.17 (0.06) | ||||
| r magnitude | 14.70 (0.3) | ||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 14.30 (0.003) | 14.32 (0.0008) | 14.30 (0.003) | ||
| BP magnitude | 14.20 (0.003) | 14.15 (0.009) | |||
| RP magnitude | 14.47 (0.004) | 14.47 (0.004) | |||
| Pan g magnitude | 14.20 (0.006) | ||||
| Pan r magnitude | 14.51 (0.002) | ||||
| Pan i magnitude | 14.80 (0.004) | ||||
| Pan z magnitude | 15.04 (0.003) | ||||
| Pan y magnitude | 15.21 (0.003) | ||||
| E(B-V) | 0.182 | ||||
* 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.