All names: SDSS J214900.87+004842.7, Gaia DR3 2681294447341468416, Gaia EDR3 2681294447341468416, WD 2146+005, GALEX J214900.8+004842, Gaia DR2 2681294447341468416, SDSS J214900.86+004842.7, SDSS J214900.87+004842.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Hardy et al. 2023a | Gaia DR2 | Stilism | Ferrario et al. 2015 | Kulebi et al. 2009 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 49 00.87 (0.5) | 21 49 00.87 | 21 49 00.87 (0.7) | 21 49 00.87 | 21 49 00.87 (0.5) | 21 49 00.87 | 21 49 00.34 | 21 49 00.87 | ||||||
| Declination | 00 48 42.91 (0.4) | 00 48 42.75 | 00 48 42.91 (0.7) | 00 48 42.80 | 00 48 42.76 (0.4) | 00 48 42.77 | 00 48 42.12 | 00 48 42.78 | ||||||
| Spectral type | DAH | DA | DAH | DAP | DA_H: | DA | DAH | DAH | ||||||
| Effective temperature | [K] | 14120.6 (484) | 11000.0 | 16834.0 (641) | 18156.0 (719) | |||||||||
| log(g) | [cgs] | 8.67 (0.2) | 8.00 (0) | 9.00 (0.01) | 9.97 (0.04) | |||||||||
| Mass | [M☉] | 1.0317248504403291 (0.2) | ||||||||||||
| 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) | ||||||||||||||
| 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] | 4.19 (0.6) | 3.63 (0.8) | 4.19 (0.6) | ||||||||||
| Distance | [pc] | 238.61 (34) | 275.47 (63) | 238.61 (34) | ||||||||||
| Composition | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.980622949 (0.6) | 2.933 (1) | 2.981 (0.6) | 1.6 | |||||||||
| Proper motion (declination) | [mas/yr] | 9.559072533 (0.5) | 8.942 (1) | 9.559 (0.5) | 7.2 | |||||||||
| Variability | ||||||||||||||
| Magnetic | yes | yes | yes | |||||||||||
| Bd | [MG] | 9.569427678353929 | 10.09 (5) | 10.09 (5) | ||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | ||||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 20.12 (0.04) | 20.12 (0.04) | 20.13 (0.04) | 20.13 | 20.11 (0.04) | |||||||||
| g magnitude | 19.86 (0.02) | 19.86 (0.01) | 19.89 (0.02) | 19.88 | 19.87 (0.02) | |||||||||
| r magnitude | 20.00 (0.02) | 20.00 (0.02) | 19.97 (0.02) | 19.96 (0.02) | ||||||||||
| i magnitude | 20.16 (0.03) | 20.16 (0.03) | 20.21 (0.04) | 20.21 (0.04) | ||||||||||
| z magnitude | 20.32 (0.1) | 20.32 (0.1) | 20.06 (0.3) | 20.03 (0.3) | ||||||||||
| G magnitude | 19.91 (0.06) | 19.97 | 19.91 (0.006) | |||||||||||
| BP magnitude | 19.84 (0.06) | 19.80 | ||||||||||||
| RP magnitude | 19.83 (0.08) | 20.06 | ||||||||||||
| Pan g magnitude | 19.86 (0.01) | |||||||||||||
| Pan r magnitude | 20.01 (0.01) | |||||||||||||
| Pan i magnitude | 20.18 (0.01) | |||||||||||||
| Pan z magnitude | 20.38 (0.04) | |||||||||||||
| Pan y magnitude | ||||||||||||||
| E(B-V) | 0.062 | |||||||||||||
* 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.