All names: WD 2315-051, HE 2315-0511, Gaia DR2 2633791288709297792, PHL 444, USNO-B1.0 0850-00632318, TIC 301135547, Gaia EDR3 2633791288709297792, Gaia DR3 2633791288709297792, WISE J231804.23-045445.9, SDSS J231804.23-045446.0, LB 1165, GALEX J231804.2-045444, 2MASS J23180425-0454456
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Koester et al. 2009 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 18 04.22 (0.04) | 23 18 04.22 (0.06) | 23 18 04.22 | 23 18 04.25 (0.04) | 23 18 03.86 | |||
| Declination | -04 54 46.50 (0.03) | -04 54 46.47 (0.04) | -04 54 46.50 | -04 54 45.52 (0.03) | -04 54 41.40 | |||
| Spectral type | DA | DA | DA1.5 | |||||
| Effective temperature | [K] | 33451.0 (82) | 30611.0 (691) | |||||
| log(g) | [cgs] | 7.72 (0.01) | 7.60 (0.02) | |||||
| Mass | [M☉] | 0.466 (0.01) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 6.15 (0.05) | 6.06 (0.06) | 6.15 | 6.15 (0.05) | |||
| Distance | [pc] | 162.50 (1) | 164.99 (2) | 162.50 | 162.50 (1) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -30.57875917 (0.05) | -30.47853474 (0.1) | -30.579 (0.05) | ||||
| Proper motion (declination) | [mas/yr] | -60.95246858 (0.04) | -60.87151255 (0.08) | -60.952 (0.04) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 15.37 | 15.25 (0.04) | ||||||
| V magnitude | 15.38 (0.09) | |||||||
| R magnitude | 15.82 (0.2) | |||||||
| I magnitude | ||||||||
| J magnitude | 15.95 (0.08) | |||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | ||||||||
| g magnitude | 15.24 (0.02) | |||||||
| r magnitude | 15.60 (0.01) | |||||||
| i magnitude | 16.07 (0.3) | |||||||
| z magnitude | ||||||||
| G magnitude | 15.36 (0.003) | 15.38 | 15.36 | 15.36 (0.003) | ||||
| BP magnitude | 15.23 (0.003) | 15.17 | ||||||
| RP magnitude | 15.62 (0.003) | 15.61 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.021 | |||||||
* 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.