All names: G 272-B2A, WD 0158-160, GALEX J020056.8-154609, TIC 257459955, EC 01585-1600, WDJ020056.71-154609.73, Gaia DR2 5147930591051748480, SDSS J020056.77-154609.5, Gaia DR3 5147930591051748480, WDS J02009-1546A, UCAC4 372-002305, 2MASS J02005671-1546097, USNO-B1.0 0742-00019772, ** SKF 310A, Gaia EDR3 5147930591051748480, DENIS J020056.7-154609, UCAC3 149-4918, MCT 0158-1600
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Bergeron et al. 2021 | MWDD HE | Gaia DR2 | Stilism | Voss et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 00 56.85 (0.03) | 02 00 56.85 (0.05) | 02 00 56.85 | 02 00 56.71 (0.03) | 02 00 56.85 | 02 00 56.26 | |||||||
| Declination | -15 46 09.23 (0.02) | -15 46 09.25 (0.04) | -15 46 09.23 | -15 46 09.73 (0.02) | -15 46 09.25 | -15 46 07.32 | |||||||
| Spectral type | DB | DB | DB | DB | DB | DBA | |||||||
| Effective temperature | [K] | 21773.0 (410) | 27024.0 (1788) | 22151.0 | 25518.0 | 24617.0 (731) | |||||||
| log(g) | [cgs] | 7.98 (0.008) | 8.03 (0.08) | 7.99 | 7.88 | 8.02 (0.01) | |||||||
| Mass | [M☉] | 0.589 (0.007) | 0.628 (0.04) | 0.599 | 0.542 | 0.619 (0.008) | |||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.0155 | 0.0417 | ||||||||||
| log(H/He) | |||||||||||||
| 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] | 14.57 (0.04) | 14.65 (0.06) | 14.57 | 14.57 (0.04) | 14.65 (0.06) | |||||||
| Distance | [pc] | 68.63 (0.2) | 68.00 | 68.27 (0.3) | 68.63 | 68.63 (0.2) | 68.27 (0.3) | ||||||
| Composition | He | He | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 127.487634 (0.03) | 127.4655819 (0.1) | 127.488 (0.04) | 127.4655819 | ||||||||
| Proper motion (declination) | [mas/yr] | 31.15188616 (0.03) | 31.14321561 (0.08) | 31.152 (0.03) | 31.14321561 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | yes | ||||||||||||
| B magnitude | 14.38 | 14.59 (0.04) | |||||||||||
| V magnitude | 14.55 (0.07) | ||||||||||||
| R magnitude | 15.03 (0.06) | ||||||||||||
| I magnitude | 14.85 (0.03) | ||||||||||||
| J magnitude | 15.16 (0.05) | ||||||||||||
| H magnitude | 15.20 (0.1) | ||||||||||||
| K magnitude | 15.53 (0.2) | ||||||||||||
| u magnitude | 14.33 (0.003) | 14.33 (0.003) | |||||||||||
| g magnitude | 14.37 (0.003) | 14.37 (0.003) | |||||||||||
| r magnitude | 14.89 (0.004) | 14.89 (0.004) | |||||||||||
| i magnitude | 15.18 (0.004) | 15.18 (0.004) | |||||||||||
| z magnitude | 15.41 (0.006) | 15.41 (0.006) | |||||||||||
| G magnitude | 14.66 (0.004) | 14.68 | 14.66 | 14.66 (0.003) | 14.68 | ||||||||
| BP magnitude | 14.55 (0.004) | 14.53 | 14.53 | ||||||||||
| RP magnitude | 14.85 (0.005) | 14.84 | 14.84 | ||||||||||
| Pan g magnitude | 14.53 (0.004) | ||||||||||||
| Pan r magnitude | 14.88 (0.003) | ||||||||||||
| Pan i magnitude | 15.19 (0.005) | ||||||||||||
| Pan z magnitude | 15.45 (0.002) | ||||||||||||
| Pan y magnitude | 15.62 (0.006) | ||||||||||||
| E(B-V) | 0.001 | ||||||||||||
* 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.