All names: TIC 4894164, WD 0947+325, WISEA J095049.45+321941.4, GALEX J095049.4+321941, SDSS J095049.48+321941.1, KUV 09479+3234, UCAC2 43100070, PG 0947+326, LAMOST J095049.49+321941.5, 2MASS J09504950+3219411, J0950+3219, CBS 16, WDJ095049.50+321941.20, Gaia EDR3 793309222967482368, Gaia DR3 793309222967482368, Gaia DR2 793309222967482368, UCAC4 612-045261, WISE J095049.46+321941.5, Ton 458, SDSS J095049.49+321941.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | Gaia DR2 | Stilism | Guo et al. 2015 | Koester et al. 2014 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 50 49.44 (0.04) | 09 50 49.44 (0.06) | 09 50 49.44 | 09 50 49.50 (0.04) | 09 50 49.44 | 09 50 48.67 | ||||||||
| Declination | 32 19 41.18 (0.03) | 32 19 41.18 (0.07) | 32 19 41.18 | 32 19 41.19 (0.03) | 32 19 41.18 | 32 19 38.28 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA2.2 | DA2.5 | |||||||
| Effective temperature | [K] | 21924.0 (329) | 21925.0 (331) | 22400.0 (249) | 22340.0 (303) | 23240.0 (359) | 21305.0 (258) | |||||||
| log(g) | [cgs] | 8.35 (0.01) | 8.35 (0.01) | 8.46 (0.04) | 8.31 (0.09) | 8.34 (0.05) | 8.32 (0.01) | |||||||
| Mass | [M☉] | 0.841 (0.01) | 0.84 (0.01) | 0.91 (0.02) | 0.805 (0.06) | 0.83 (0.03) | 0.82 (0.009) | |||||||
| 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) | <-8.30 | |||||||||||||
| 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] | 14.00 (0.05) | 13.99 (0.07) | 14.00 | 14.00 (0.05) | 13.99 (0.07) | ||||||||
| Distance | [pc] | 71.41 (0.2) | 71.49 (0.4) | 74.00 | 71.41 | 71.41 (0.2) | 71.49 (0.4) | |||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -50.7599783 (0.04) | -50.6361904 (0.1) | -50.76 (0.04) | -50.6361904 | |||||||||
| Proper motion (declination) | [mas/yr] | -1.182355021 (0.05) | -1.366945768 (0.1) | -1.182 (0.05) | -1.366945768 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 15.35 (0.01) | |||||||||||||
| V magnitude | 15.50 (0.1) | 15.50 (0.1) | ||||||||||||
| R magnitude | 15.80 (0.1) | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.01 (0.07) | |||||||||||||
| H magnitude | 16.13 (0.2) | |||||||||||||
| K magnitude | 15.84 (0.07) | |||||||||||||
| u magnitude | 15.19 (0.004) | 15.19 (0.004) | ||||||||||||
| g magnitude | 15.26 (0.004) | 15.26 (0.004) | ||||||||||||
| r magnitude | 15.63 (0.004) | 15.63 (0.004) | ||||||||||||
| i magnitude | 15.94 (0.004) | 15.94 (0.004) | ||||||||||||
| z magnitude | 16.22 (0.008) | 16.22 (0.008) | ||||||||||||
| G magnitude | 15.45 (0.002) | 15.47 | 15.45 | 15.45 (0.003) | 15.47 | |||||||||
| BP magnitude | 15.35 (0.002) | 15.32 | 15.32 | |||||||||||
| RP magnitude | 15.65 (0.003) | 15.66 | 15.66 | |||||||||||
| Pan g magnitude | 15.29 (0.004) | |||||||||||||
| Pan r magnitude | 15.64 (0.005) | |||||||||||||
| Pan i magnitude | 15.97 (0.004) | |||||||||||||
| Pan z magnitude | 16.23 (0.005) | |||||||||||||
| Pan y magnitude | 16.41 (0.004) | |||||||||||||
| E(B-V) | 0.003 | |||||||||||||
* 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.