All names: Gaia EDR3 2680813793257255424, [HHD2009] SDSS J2152-0036, GALEX J215239.6-003652, WD 2150-008, SDSS J215239.61-003652.0, 2SLAQ J215239.61-003652.0, Gaia DR3 2680813793257255424, Gaia DR2 2680813793256996864
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 52 39.61 (0.6) | 21 52 39.61 | 21 52 39.61 (1) | 21 52 39.61 (0.6) | 21 52 39.61 | 21 52 39.24 | 21 52 39.61 | ||
| Declination | -00 36 52.05 (0.5) | -00 36 52.03 | -00 36 52.04 (0.8) | -00 36 51.97 (0.5) | -00 36 52.02 | -00 36 45.36 | -00 36 52.01 | ||
| Spectral type | DC+M | DC+M: | DC M | DCM: | |||||
| Effective temperature | [K] | 7190.0 (110) | 10116.0 (51) | ||||||
| log(g) | [cgs] | 8.83 (0.2) | 8.67 (0.8) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | -1.65 (0.7) | -1.68 (1) | ||||||
| Distance | [pc] | ||||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -6.352786995 (0.7) | -8.284386341 (2) | -6.353 (0.7) | 4.9 | ||||
| Proper motion (declination) | [mas/yr] | -5.13162245 (0.6) | -4.315649069 (2) | -5.132 (0.6) | -2.3 | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.06 (0.04) | 20.15 (0.05) | 20.15 (0.05) | 20.15 | 20.11 (0.05) | ||||
| g magnitude | 20.27 (0.02) | 20.32 (0.02) | 20.33 (0.03) | 20.33 | 20.32 (0.03) | ||||
| r magnitude | 20.22 (0.02) | 20.20 (0.03) | 20.20 (0.03) | 20.20 | 20.19 (0.03) | ||||
| i magnitude | 19.88 (0.03) | 19.81 (0.02) | 19.81 (0.02) | 19.81 | 19.80 (0.02) | ||||
| z magnitude | 19.48 (0.06) | 19.48 (0.06) | 19.48 (0.06) | 19.47 | 19.45 (0.06) | ||||
| G magnitude | 20.04 (0.07) | 20.08 | 20.04 (0.007) | ||||||
| BP magnitude | 20.20 (0.07) | 20.06 | |||||||
| RP magnitude | 19.49 (0.09) | 19.38 | |||||||
| Pan g magnitude | 20.35 (0.03) | ||||||||
| Pan r magnitude | 20.19 (0.01) | ||||||||
| Pan i magnitude | 19.85 (0.01) | ||||||||
| Pan z magnitude | 19.59 (0.02) | ||||||||
| Pan y magnitude | 19.38 (0.04) | ||||||||
| E(B-V) | |||||||||
* 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.