All names: WD 1230-308, USNO-B1.0 0588-00286431, Gaia DR3 3470463802872604032, Gaia EDR3 3470463802872604032, TIC 130927019, EC 12303-3052, GALEX J123300.6-310836, 2MASS J12330058-3108362, Gaia DR2 3470463802872604032
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Koester et al. 2009 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 33 00.63 (0.04) | 12 33 00.63 (0.07) | 12 33 00.63 | 12 33 00.60 (0.04) | 12 33 00.29 | |||||
| Declination | -31 08 36.50 (0.03) | -31 08 36.49 (0.04) | -31 08 36.50 | -31 08 36.23 (0.03) | -31 08 33.00 | |||||
| Spectral type | DA | DA | DA2.0 | DA2 | ||||||
| Effective temperature | [K] | 25501.0 (346) | 25180.0 (366) | 22764.0 (38) | 23162.0 (368) | |||||
| log(g) | [cgs] | 8.28 (0.09) | 8.23 (0.04) | 8.28 (0.006) | 7.78 (0.02) | |||||
| Mass | [M☉] | 0.789 (0.06) | 0.77 (0.03) | 0.516 (0.01) | ||||||
| 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) | <-8.10 | |||||||||
| 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] | 7.53 (0.05) | 7.60 (0.08) | 7.53 | 7.53 (0.05) | |||||
| Distance | [pc] | 132.83 (0.9) | 131.64 (1) | 105.00 | 132.83 | 132.83 (0.9) | ||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 27.3187279 (0.06) | 27.02101394 (0.1) | 27.319 (0.06) | ||||||
| Proper motion (declination) | [mas/yr] | -17.10341516 (0.04) | -16.92198774 (0.1) | -17.103 (0.04) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 15.71 | |||||||||
| V magnitude | 15.73 (0.03) | 15.81 | 15.81 | |||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 16.55 (0.1) | |||||||||
| H magnitude | 16.18 (0.2) | |||||||||
| K magnitude | 15.95 (0.3) | |||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 15.80 (0.002) | 15.82 | 15.80 | 15.80 (0.003) | ||||||
| BP magnitude | 15.71 (0.002) | 15.69 | ||||||||
| RP magnitude | 16.01 (0.004) | 16.01 | ||||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.019 | |||||||||
* 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.