All names: 1SWASP J195219.66-384613.8, GALEX J195219.6-384613, TIC 300284179, WD 1948-389, EC 19489-3853, 2MASS J19521967-3846139, Gaia DR3 6690659513515872000, Gaia EDR3 6690659513515872000, USNO-B1.0 0512-00752158, BPS CS 22964-60, BPS CS 22964-0060, Gaia DR2 6690659513515872000
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 19 52 19.69 (0.03) | 19 52 19.69 (0.05) | 19 52 19.69 | 19 52 19.68 (0.03) | 19 52 19.44 | ||||
| Declination | -38 46 14.98 (0.03) | -38 46 14.95 (0.04) | -38 46 14.98 | -38 46 14.05 (0.03) | -38 46 20.64 | ||||
| Spectral type | DA | DA | DA1.3 | DA | |||||
| Effective temperature | [K] | 38490.0 (587) | 37199.0 (64) | 44772.0 (2552) | |||||
| log(g) | [cgs] | 7.73 (0.05) | 7.75 (0.01) | 8.11 (0.03) | |||||
| Mass | [M☉] | 0.54 (0.02) | 0.735 (0.02) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| log(C/H) | |||||||||
| log(N/H) | |||||||||
| log(O/H) | |||||||||
| log(Na/H) | |||||||||
| log(Mg/H) | |||||||||
| log(Al/H) | |||||||||
| log(Si/H) | |||||||||
| log(P/H) | |||||||||
| log(S/H) | |||||||||
| log(Sc/H) | |||||||||
| log(Ti/H) | |||||||||
| log(Cr/H) | |||||||||
| log(Mn/H) | |||||||||
| log(Fe/H) | |||||||||
| log(Ni/H) | |||||||||
| Parallax | [mas] | 9.54 (0.04) | 9.51 (0.06) | 9.54 | 9.54 (0.04) | ||||
| Distance | [pc] | 104.85 (0.5) | 105.12 (0.7) | 130.00 | 104.85 | 104.85 (0.5) | |||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 5.057089855 (0.04) | 5.063683498 (0.1) | 5.057 (0.04) | |||||
| Proper motion (declination) | [mas/yr] | -58.11273947 (0.03) | -58.18045444 (0.07) | -58.113 (0.03) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.33 | ||||||||
| V magnitude | 14.63 | 13.34 | |||||||
| R magnitude | 15.00 | ||||||||
| I magnitude | |||||||||
| J magnitude | 15.44 (0.05) | ||||||||
| H magnitude | 15.44 (0.1) | ||||||||
| K magnitude | 15.18 (0.2) | ||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 14.58 (0.002) | 14.60 | 14.58 | 14.58 (0.003) | |||||
| BP magnitude | 14.43 (0.002) | 14.37 | |||||||
| RP magnitude | 14.89 (0.002) | 14.88 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| 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.