All names: USNO-B1.0 0427-00006691, WDJ003047.17-471236.37, Gaia DR3 4978793541987799040, EC 00283-4729, MCT 0028-4729, JL 192, Gaia DR2 4978793541987799040, TIC 80290123, WD 0028-474, Gaia EDR3 4978793541987799040, 2MASS J00304717-4712362, GALEX J003047.1-471235, GSC 08024-01028
| Parameter | Unit | Gaia EDR3 | Bergeron et al. 2021 | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 30 47.27 (0.01) | 00 30 47.27 (0.02) | 00 30 47.27 | 00 30 47.17 (0.01) | 00 30 47.27 | 00 30 46.44 | ||||||
| Declination | -47 12 35.41 (0.02) | -47 12 35.44 (0.03) | -47 12 35.41 | -47 12 36.37 (0.02) | -47 12 35.44 | -47 12 31.68 | ||||||
| Spectral type | DA | DA | DA | DA2.8 | DA | |||||||
| Effective temperature | [K] | 17818.0 (357) | 17550.0 (238) | 17780.0 (268) | 17394.0 (27) | 16236.0 (93) | ||||||
| log(g) | [cgs] | 7.84 (0.06) | 7.76 (0.09) | 7.78 (0.04) | 7.65 (0.005) | 7.34 (0.006) | ||||||
| Mass | [M☉] | 0.535 (0.03) | 0.492 (0.04) | 0.5 (0.02) | 0.328 (0.003) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.0770 | ||||||||||
| 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) | <-8.40 | |||||||||||
| 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] | 10.36 (0.03) | 10.34 (0.05) | 10.36 | 10.36 (0.03) | 10.34 (0.05) | ||||||
| Distance | [pc] | 96.53 (0.3) | 96.00 | 96.70 (0.4) | 86.00 | 96.53 | 96.53 (0.3) | 96.70 (0.4) | ||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 60.84592354 (0.02) | 60.76961671 (0.04) | 60.846 (0.02) | 60.76961671 | |||||||
| Proper motion (declination) | [mas/yr] | 59.6722225 (0.02) | 59.66505549 (0.06) | 59.672 (0.02) | 59.66505549 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.24 | 14.70 | ||||||||||
| V magnitude | 15.15 (0.03) | |||||||||||
| R magnitude | 14.90 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 15.31 (0.06) | |||||||||||
| H magnitude | 15.52 (0.1) | |||||||||||
| K magnitude | 15.44 (0.2) | |||||||||||
| u magnitude | ||||||||||||
| g magnitude | ||||||||||||
| r magnitude | ||||||||||||
| i magnitude | ||||||||||||
| z magnitude | ||||||||||||
| G magnitude | 15.16 (0.0008) | 15.18 | 15.16 | 15.16 (0.003) | 15.18 | |||||||
| BP magnitude | 15.12 (0.0008) | 15.10 | 15.10 | |||||||||
| RP magnitude | 15.24 (0.001) | 15.25 | 15.25 | |||||||||
| Pan g magnitude | ||||||||||||
| Pan r magnitude | ||||||||||||
| Pan i magnitude | ||||||||||||
| Pan z magnitude | ||||||||||||
| Pan y magnitude | ||||||||||||
| E(B-V) | 0.002 | |||||||||||
* 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.