All names: J0904+0211, SDSS J090413.77+021144.1, Gaia EDR3 577342113952420224, Gaia DR2 577342113952420224, SDSS J090413.76+021144.1, WDJ090413.76+021144.23, LSPM J0904+0211, LP 606-41, Gaia DR3 577342113952420224, NLTT 20895
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 04 13.88 (0.2) | 09 04 13.88 | 09 04 13.88 | 09 04 13.76 (0.2) | 09 04 13.88 | ||||||
| Declination | 02 11 41.95 (0.1) | 02 11 42.02 | 02 11 41.95 | 02 11 44.23 (0.1) | 02 11 42.02 | ||||||
| Spectral type | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 6243.0 (49) | 6265.0 (46) | 6246.0 (49) | 6343.0 (141) | ||||||
| log(g) | [cgs] | 8.32 (0.02) | 8.35 (0.02) | 8.35 (0.02) | 8.38 (0.04) | ||||||
| Mass | [M☉] | 0.793 (0.02) | 0.816 (0.02) | 0.811 (0.02) | 0.835 (0.04) | ||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 4.4300 | |||||||||
| 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] | 14.09 (0.2) | 14.36 (0.3) | 14.36 (0.3) | 14.09 | 14.09 (0.2) | 14.36 (0.3) | ||||
| Distance | [pc] | 70.99 (1) | 69.64 (1) | 69.66 (1) | 70.99 | 70.99 (1) | 69.66 (1) | ||||
| Composition | H | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 117.800021 (0.2) | 118.2711534 (0.5) | 117.8 (0.2) | 118.2711534 | ||||||
| Proper motion (declination) | [mas/yr] | -142.160608 (0.2) | -142.7752049 (0.4) | -142.161 (0.2) | -142.7752049 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 18.90 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 18.10 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 17.72 (0.03) | ||||||||||
| H magnitude | 17.48 (0.06) | ||||||||||
| K magnitude | 17.33 (0.08) | ||||||||||
| u magnitude | 19.68 (0.03) | 19.68 (0.03) | 19.72 (0.04) | ||||||||
| g magnitude | 18.92 (0.009) | 18.89 (0.01) | |||||||||
| r magnitude | 18.60 (0.009) | 18.57 (0.01) | |||||||||
| i magnitude | 18.47 (0.01) | 18.49 (0.01) | |||||||||
| z magnitude | 18.44 (0.03) | 18.37 (0.04) | |||||||||
| G magnitude | 18.59 (0.03) | 18.60 | 18.59 | 18.59 (0.003) | 18.60 | ||||||
| BP magnitude | 18.88 (0.03) | 18.86 | 18.86 | ||||||||
| RP magnitude | 18.24 (0.04) | 18.15 | 18.15 | ||||||||
| Pan g magnitude | 18.86 (0.01) | 18.86 (0.01) | |||||||||
| Pan r magnitude | 18.58 (0.007) | 18.57 (0.007) | |||||||||
| Pan i magnitude | 18.47 (0.005) | 18.47 (0.006) | |||||||||
| Pan z magnitude | 18.49 (0.02) | 18.49 (0.02) | |||||||||
| Pan y magnitude | 18.52 (0.02) | 18.52 (0.02) | |||||||||
| 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.