All names: GD 397, WDJ215202.89+372619.11, Gaia EDR3 1949881037465072128, Gaia DR2 1949881037465072128, Gaia DR3 1949881037465072128, GALEX J215202.9+372620, UCAC3 255-257628, WD 2149+372, WD 2149+37, 2MASS J21520288+3726189, EGGR 401, 1SWASP J215202.73+372617.9, UCAC4 638-114755, TIC 84198841
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 52 02.99 (0.02) | 21 52 02.99 (0.02) | 21 52 02.99 | 21 52 02.89 (0.02) | 21 52 02.99 | 21 52 02.59 | ||||||
| Declination | 37 26 20.78 (0.02) | 37 26 20.73 (0.03) | 37 26 20.78 | 37 26 19.12 (0.02) | 37 26 20.73 | 37 26 13.56 | ||||||
| Spectral type | DA | DA | DA3.7 | DA4 | ||||||||
| Effective temperature | [K] | 11328.0 | 11805.0 | 13640.0 (308) | 11231.0 (50) | |||||||
| log(g) | [cgs] | 8.09 | 8.07 | 7.98 (0.05) | 8.07 (0.005) | |||||||
| Mass | [M☉] | 0.657 | 0.626 | 0.6 (0.03) | 0.646 (0.005) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.4915 | 0.4448 | |||||||||
| 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] | 21.22 (0.03) | 21.22 (0.04) | 21.22 | 21.22 (0.03) | 21.22 (0.04) | ||||||
| Distance | [pc] | 47.12 (0.06) | 47.12 (0.09) | 59.00 | 47.12 | 47.12 (0.06) | 47.12 (0.09) | |||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 76.03975584 (0.02) | 75.85521542 (0.04) | 76.04 (0.02) | 75.85521542 | |||||||
| Proper motion (declination) | [mas/yr] | 104.1194793 (0.02) | 104.3535029 (0.06) | 104.119 (0.02) | 104.3535029 | |||||||
| Variability | NOV | |||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 15.34 (0.05) | |||||||||||
| V magnitude | 15.04 (0.05) | |||||||||||
| R magnitude | 15.57 (0.08) | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 15.41 (0.06) | |||||||||||
| H magnitude | 15.44 (0.1) | |||||||||||
| K magnitude | 15.64 (0.2) | |||||||||||
| u magnitude | ||||||||||||
| g magnitude | ||||||||||||
| r magnitude | ||||||||||||
| i magnitude | ||||||||||||
| z magnitude | ||||||||||||
| G magnitude | 15.29 (0.001) | 15.31 | 15.29 | 15.29 (0.003) | 15.31 | |||||||
| BP magnitude | 15.31 (0.001) | 15.30 | 15.30 | |||||||||
| RP magnitude | 15.29 (0.001) | 15.30 | 15.30 | |||||||||
| Pan g magnitude | 15.26 (0.008) | |||||||||||
| Pan r magnitude | 15.41 (0.002) | |||||||||||
| Pan i magnitude | 15.61 (0.002) | |||||||||||
| Pan z magnitude | 15.81 (0.005) | |||||||||||
| Pan y magnitude | 15.95 (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.