All names: HIP 22485, WD 0447+176, HZ 1, KUV 04473+1737, GEN# +6.20004001, Cl* Melotte 25 HZ 1, KUV 683-13, KUV 685-13, TYC 1284-314-1, Gaia DR3 3406506723313874688, Gaia EDR3 3406506723313874688, 2MASS J04501352+1742061, Gaia DR2 3406506723313874688, PLX 1076.01, HZ1, 1SWASP J045013.52+174206.1, UBV M 43354, FB 42, HIC 22485, TIC 436649908
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 04 50 13.52 (0.03) | 04 50 13.51 | 04 50 13.52 (0.06) | 04 50 13.52 (0.03) | 04 50 13.99 | ||
| Declination | 17 42 06.33 (0.01) | 17 42 06.18 | 17 42 06.32 (0.04) | 17 42 06.20 (0.01) | 17 42 00.36 | ||
| Spectral type | He-sdO | sdOHe | DB | ||||
| Effective temperature | [K] | 41344.0 (1000) | |||||
| log(g) | [cgs] | 5.68 (0.1) | |||||
| Mass | [M☉] | ||||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | 3.03 (0.03) | 3.10 (0.07) | 3.10 (0.07) | 3.03 (0.03) | ||
| Distance | [pc] | 329.95 (4) | 322.92 (7) | 322.92 (7) | 329.95 (4) | ||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | -6.326213907 (0.04) | -6.033 (0.1) | -6.033289331 (0.1) | -6.326 (0.04) | ||
| Proper motion (declination) | [mas/yr] | 8.05132785 (0.03) | 8.058 (0.07) | 8.058025897 (0.06) | 8.051 (0.03) | ||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | 12.60 | ||||||
| V magnitude | 12.66 | ||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | 12.75 (0.02) | 12.75 (0.02) | |||||
| H magnitude | 12.85 (0.02) | 12.85 (0.02) | |||||
| K magnitude | 12.87 (0.03) | 12.87 (0.03) | |||||
| u magnitude | |||||||
| g magnitude | |||||||
| r magnitude | |||||||
| i magnitude | |||||||
| z magnitude | |||||||
| G magnitude | 12.57 (0.001) | 12.59 (0.0004) | 12.59 | 12.57 (0.003) | |||
| BP magnitude | 12.53 (0.001) | 12.49 (0.008) | 12.49 | ||||
| RP magnitude | 12.61 (0.0005) | 12.61 (0.002) | 12.61 | ||||
| Pan g magnitude | 12.67 | ||||||
| Pan r magnitude | 12.89 | ||||||
| Pan i magnitude | 13.07 | ||||||
| Pan z magnitude | 13.15 (0.007) | ||||||
| Pan y magnitude | 13.28 (0.003) | ||||||
| E(B-V) | 0.275 | ||||||
* 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.