All names: KUV 18332+6429, 2MASS J18332921+6431520, [SGR2010] J1833+6431, Gaia EDR3 2256429174251779840, WIRED J183329.18+643151.7, SDSS J183329.18+643151.7, SDSS J183329.20+643151.9, TIC 233744120, Gaia DR3 2256429174251779840, GALEX J183329.2+643151, SDSS J183329.19+643151.7, Gaia DR2 2256429174251779840, SDSS J183329.19+643151.8, WD 1833+644
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Gianninas et al. 2011 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 18 33 29.18 (0.1) | 18 33 29.18 | 18 33 29.18 (0.1) | 18 33 29.19 | 18 33 29.20 (0.1) | 18 33 29.14 | 18 33 29.19 | |||||
| Declination | 64 31 51.54 (0.1) | 64 31 51.72 | 64 31 51.55 (0.2) | 64 31 51.74 | 64 31 51.96 (0.1) | 64 31 49.44 | 64 31 51.73 | |||||
| Spectral type | DA+M | DA+M | DA | DA+M2 | DA | DA+M | ||||||
| Effective temperature | [K] | 42894.0 (2379) | 51068.0 (102) | 47160.0 (1535) | 10082.0 (8) | |||||||
| log(g) | [cgs] | 7.38 (0.2) | 7.86 (0.07) | 7.87 (0.1) | 7.92 (0.04) | |||||||
| Mass | [M☉] | 0.43 (0.08) | 0.63 (0.03) | 0.62 (0.06) | ||||||||
| log(Luminosity) | [L☉] | 0.18 (0.2) | ||||||||||
| Cooling age | [Gyr] | 0.0003 (0.0003) | ||||||||||
| 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] | 2.24 (0.1) | 2.37 (0.2) | 2.24 (0.1) | ||||||||
| Distance | [pc] | 446.45 (24) | 421.21 (28) | 454.00 (24) | 376.00 | 446.45 (24) | ||||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -9.135193608 (0.2) | -9.972227629 (0.3) | -9.135 (0.2) | ||||||||
| Proper motion (declination) | [mas/yr] | -25.8913953 (0.1) | -26.98367432 (0.3) | -25.891 (0.1) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | yes | WDMS | |||||||||
| B magnitude | 17.00 | |||||||||||
| V magnitude | 16.90 | |||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 14.10 (0.03) | |||||||||||
| H magnitude | 13.52 (0.03) | |||||||||||
| K magnitude | 13.24 (0.04) | |||||||||||
| u magnitude | 16.41 (0.007) | 16.42 | 16.40 (0.007) | 16.42 (0.01) | ||||||||
| g magnitude | 16.60 (0.004) | 16.61 | 16.59 (0.004) | 16.61 (0.01) | ||||||||
| r magnitude | 16.44 (0.004) | 16.44 | 16.44 (0.004) | 16.44 (0.01) | ||||||||
| i magnitude | 15.82 (0.004) | 15.82 | 15.82 (0.004) | 15.82 (0.02) | ||||||||
| z magnitude | 15.37 (0.006) | 15.38 | 15.37 (0.006) | 15.38 (0.02) | ||||||||
| G magnitude | 16.18 (0.003) | 16.15 | 16.18 (0.004) | |||||||||
| BP magnitude | 16.53 (0.003) | 16.49 | ||||||||||
| RP magnitude | 15.41 (0.003) | 15.42 | ||||||||||
| Pan g magnitude | 16.61 (0.003) | |||||||||||
| Pan r magnitude | 16.45 (0.003) | |||||||||||
| Pan i magnitude | 15.83 (0.003) | |||||||||||
| Pan z magnitude | 15.45 (0.003) | |||||||||||
| Pan y magnitude | 15.26 (0.005) | |||||||||||
| E(B-V) | 0.034 | |||||||||||
* 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.