All names: ** LDS 3615B, J0445-2726, Gaia DR3 4881098119928195456, WD 0443-275.1, NLTT 13902, WDS J04453-2726B, Gaia EDR3 4881098119928195456, 2MASS J04451728-2726235, WDJ044517.31-272623.37, GALEX J044517.2-272623, Gaia DR2 4881098119928195456, LP891-012, TIC 423810968, LP 891-12
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 04 45 17.05 (0.03) | 04 45 17.06 (0.04) | 04 45 17.05 | 04 45 17.31 (0.03) | 04 45 17.06 | 04 45 18.84 | ||||
| Declination | -27 26 24.72 (0.04) | -27 26 24.68 (0.04) | -27 26 24.72 | -27 26 23.37 (0.04) | -27 26 24.68 | -27 26 34.80 | ||||
| Spectral type | DC | DC | DB4 | DB | ||||||
| Effective temperature | [K] | 6809.0 (34) | 6796.0 (45) | |||||||
| log(g) | [cgs] | 7.96 (0.008) | 8.00 (0.01) | |||||||
| Mass | [M☉] | 0.552 (0.007) | 0.572 (0.009) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 1.6600 | ||||||||
| log(H/He) | -3.4 | |||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(N/He) | ||||||||||
| log(O/He) | ||||||||||
| log(Na/He) | ||||||||||
| log(Mg/He) | ||||||||||
| log(Al/He) | ||||||||||
| log(Si/He) | ||||||||||
| log(P/He) | ||||||||||
| log(S/He) | ||||||||||
| log(Cl/He) | ||||||||||
| log(Sc/He) | ||||||||||
| log(Ti/He) | ||||||||||
| log(V/He) | ||||||||||
| log(Cr/He) | ||||||||||
| log(Mn/He) | ||||||||||
| log(Fe/He) | ||||||||||
| log(Co/He) | ||||||||||
| log(Ni/He) | ||||||||||
| log(Cu/He) | ||||||||||
| log(Zn/He) | ||||||||||
| log(Ga/He) | ||||||||||
| log(Ge/He) | ||||||||||
| log(Sr/He) | ||||||||||
| Parallax | [mas] | 24.94 (0.05) | 24.99 (0.06) | 24.99 (0.06) | 24.94 | 24.94 (0.05) | 24.99 (0.06) | |||
| Distance | [pc] | 40.10 (0.08) | 40.02 (0.1) | 40.02 (0.09) | 40.10 | 40.10 (0.08) | 40.02 (0.09) | |||
| Composition | He | |||||||||
| Proper motion (right ascension) | [mas/yr] | -218.2980213 (0.05) | -218.2567672 (0.08) | -218.298 (0.04) | -218.2567672 | |||||
| Proper motion (declination) | [mas/yr] | -84.31959096 (0.05) | -84.27007095 (0.1) | -84.32 (0.05) | -84.27007095 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 15.60 | |||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 16.03 (0.01) | 16.05 (0.08) | ||||||||
| H magnitude | 15.79 (0.1) | 15.79 (0.1) | ||||||||
| K magnitude | 15.89 (0.02) | |||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 16.57 (0.004) | 16.59 | 16.57 | 16.57 (0.003) | 16.59 | |||||
| BP magnitude | 16.74 (0.004) | 16.73 | 16.73 | |||||||
| RP magnitude | 16.28 (0.003) | 16.28 | 16.28 | |||||||
| Pan g magnitude | 16.75 (0.003) | 16.75 (0.005) | ||||||||
| Pan r magnitude | 16.60 (0.007) | 16.60 (0.006) | ||||||||
| Pan i magnitude | 16.61 (0.003) | 16.61 (0.003) | ||||||||
| Pan z magnitude | 16.68 (0.005) | 16.68 (0.005) | ||||||||
| Pan y magnitude | 16.73 (0.005) | 16.73 (0.005) | ||||||||
| E(B-V) | 0.000 | |||||||||
* 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.