All names: 2MASS J09234564+3028049, GALEX J092345.6+302805, SDSS J092345.59+302804.9, Gaia DR2 700346923589710080, J0923+3028, EQ J0923+3028, SDSS J092345.59+302804.8, WD 0920+306, [BGK2006] J092345.60+302805.0, CBS 6, LAMOST J092345.61+302804.4, Gaia EDR3 700346923589710080, SDSS J092345.60+302805.0, TIC 307907698, SDSS J092345.59+302805.0, Gaia DR3 700346923589710080
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Guo et al. 2015 | Gianninas et al. 2014 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 23 45.60 (0.05) | 09 23 45.60 | 09 23 45.60 (0.08) | 09 23 45.60 | 09 23 45.60 (0.05) | 09 23 44.83 | 09 23 45.60 | |||||||
| Declination | 30 28 04.61 (0.04) | 30 28 04.99 | 30 28 04.62 (0.06) | 30 28 04.61 | 30 28 05.08 (0.04) | 30 28 18.12 | 30 28 05.01 | |||||||
| Spectral type | DA | DA | DA | DA | DA2.7 | DA2 | DA | DA | ||||||
| Effective temperature | [K] | 18500.0 (290) | 18940.0 (303) | 17879.0 (273) | 19237.0 (81) | |||||||||
| log(g) | [cgs] | 6.88 (0.05) | 6.76 (0.05) | 6.57 (0.02) | 6.74 (0.01) | |||||||||
| Mass | [M☉] | 0.279 | 0.24 (0.01) | 0.21 (0.002) | 0.24 (0) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.0790 (0.07) | ||||||||||||
| 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] | 3.48 (0.06) | 3.34 (0.1) | 3.48 | 3.48 (0.06) | |||||||||
| Distance | [pc] | 287.40 (5) | 299.42 (9) | 238.00 (25) | 271.00 | 287.40 | 287.40 (5) | |||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.796928758 (0.07) | -4.120114947 (0.1) | -3.797 (0.07) | ||||||||||
| Proper motion (declination) | [mas/yr] | -29.64245673 (0.05) | -29.60979223 (0.1) | -29.642 (0.05) | ||||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | WDMS | |||||||||||||
| B magnitude | 16.00 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.18 (0.1) | |||||||||||||
| H magnitude | 16.14 (0.2) | |||||||||||||
| K magnitude | 15.63 (0.2) | |||||||||||||
| u magnitude | 15.88 (0.005) | 15.88 (0.005) | 15.81 | 15.91 (0.02) | ||||||||||
| g magnitude | 15.68 (0.003) | 15.68 (0.003) | 15.62 | 15.71 (0.02) | ||||||||||
| r magnitude | 16.08 (0.004) | 16.08 (0.004) | 16.08 (0.01) | |||||||||||
| i magnitude | 16.37 (0.004) | 16.37 (0.004) | 16.37 (0.01) | |||||||||||
| z magnitude | 16.65 (0.009) | 16.65 (0.009) | 16.64 (0.02) | |||||||||||
| G magnitude | 15.92 (0.002) | 15.94 | 15.92 | 15.92 (0.003) | ||||||||||
| BP magnitude | 15.85 (0.002) | 15.81 | ||||||||||||
| RP magnitude | 16.09 (0.004) | 16.08 | ||||||||||||
| Pan g magnitude | 15.78 (0.003) | |||||||||||||
| Pan r magnitude | 16.10 (0.002) | |||||||||||||
| Pan i magnitude | 16.40 (0.006) | |||||||||||||
| Pan z magnitude | 16.64 (0.006) | |||||||||||||
| Pan y magnitude | 16.78 (0.005) | |||||||||||||
| E(B-V) | 0.016 | |||||||||||||
* 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.