All names: UCAC4 532-146148, WD 2354+159, 2MASS J23563473+1615418, PG 2354+159, GALEX J235634.7+161541, Gaia DR3 2773136383028850688, TIC 411497816, SDSS J235634.72+161539.7, Gaia EDR3 2773136383028850688, WDJ235634.75+161540.26, Gaia DR2 2773136383028850688
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Bergeron et al. 2011 | Voss et al. 2007 | Koester et al. 2005 | Beauchamp et al. 1999 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 56 34.73 (0.03) | 23 56 34.73 (0.04) | 23 56 34.73 | 23 56 34.75 (0.03) | 23 56 34.73 | 23 56 34.37 | |||||||
| Declination | 16 15 39.27 (0.02) | 16 15 39.30 (0.03) | 16 15 39.27 | 16 15 40.26 (0.02) | 16 15 39.30 | 16 15 42.12 | |||||||
| Spectral type | DB | DBZ | DB | DB | DBZ | DB4 | |||||||
| Effective temperature | [K] | 24830.0 (1671) | 24428.0 | 19000.0 | 24800.0 | 20330.0 (380) | |||||||
| log(g) | [cgs] | 8.15 (0.06) | 8.18 | 7.91 | 8.12 | 8.14 (0.01) | |||||||
| Mass | [M☉] | 0.7 (0.04) | 0.713 | 0.684 (0.01) | |||||||||
| log(Luminosity) | [L☉] | -1.34 | |||||||||||
| Cooling age | [Gyr] | 0.0372 | |||||||||||
| log(H/He) | <-4.59 (2) | ||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | -8.1 | ||||||||||||
| 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] | 10.49 (0.04) | 10.43 (0.06) | 10.49 | 10.49 (0.04) | 10.43 (0.06) | |||||||
| Distance | [pc] | 95.32 (0.4) | 95.84 (0.6) | 105.00 | 95.32 | 95.32 (0.4) | 95.84 (0.6) | ||||||
| Composition | He | He | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -17.01057127 (0.05) | -17.05706965 (0.1) | -17.011 (0.05) | -17.05706965 | ||||||||
| Proper motion (declination) | [mas/yr] | -61.50286276 (0.03) | -61.51624178 (0.05) | -61.503 (0.03) | -61.51624178 | ||||||||
| Variability | NOV | ||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 15.78 | 15.78 | |||||||||||
| V magnitude | 15.78 | ||||||||||||
| R magnitude | 16.15 (0.2) | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 16.22 (0.1) | ||||||||||||
| H magnitude | 16.02 (0.2) | ||||||||||||
| K magnitude | 15.52 (0.2) | ||||||||||||
| u magnitude | 15.43 (0.004) | ||||||||||||
| g magnitude | 15.53 (0.003) | ||||||||||||
| r magnitude | 15.94 (0.004) | ||||||||||||
| i magnitude | 16.19 (0.004) | ||||||||||||
| z magnitude | 16.45 (0.008) | ||||||||||||
| G magnitude | 15.73 (0.002) | 15.75 | 15.73 | 15.73 (0.003) | 15.75 | ||||||||
| BP magnitude | 15.64 (0.002) | 15.60 | 15.60 | ||||||||||
| RP magnitude | 15.90 (0.003) | 15.90 | 15.90 | ||||||||||
| Pan g magnitude | 15.59 (0.003) | ||||||||||||
| Pan r magnitude | 15.92 (0.004) | ||||||||||||
| Pan i magnitude | 16.22 (0.003) | ||||||||||||
| Pan z magnitude | 16.48 (0.004) | ||||||||||||
| Pan y magnitude | 16.64 (0.002) | ||||||||||||
| E(B-V) | 0.006 | ||||||||||||
* 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.