All names: LAMOST J223952.92+143436.2, Gaia EDR3 2732763071969831808, GALEX J223952.9+143436, Gaia DR3 2732763071969831808, [SGR2010] J2239+1434, Gaia DR2 2732763067673839360, [HHD2009] SDSS J2239+1434, TIC 427691323, SDSS J223952.91+143436.3, SDSS J223952.92+143436.3, SDSS J223952.92+143436.2, 2MASS J22395291+1434361, SDSS J223952.91+143436.2, WD 2237+143
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 39 52.91 (1) | 22 39 52.92 | 22 39 52.91 (2) | 22 39 52.91 | 22 39 52.91 (1) | 22 39 52.92 | 22 39 52.80 | 22 39 52.92 | |||
| Declination | 14 34 36.08 (1) | 14 34 36.30 | 14 34 36.09 (2) | 14 34 36.19 | 14 34 36.08 (1) | 14 34 36.30 | 14 34 33.60 | 14 34 36.26 | |||
| Spectral type | DA+M | DA+dM | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 22292.0 (1665) | 6300.0 (2) | 6300.0 (1) | |||||||
| log(g) | [cgs] | 7.73 (0.3) | 7.11 (0.1) | 5.72 (0.2) | |||||||
| Mass | [M☉] | 0.49 (0.1) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | ||||||||||
| Distance | [pc] | 504.00 (33) | |||||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -2.0 (3) | 0.5 | ||||||||
| Proper motion (declination) | [mas/yr] | -16.0 (3) | -18.6 | ||||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.15 (0.1) | ||||||||||
| H magnitude | 15.49 (0.1) | ||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.76 (0.03) | 19.72 | 19.76 (0.03) | 19.72 (0.04) | 19.72 | 19.75 (0.04) | |||||
| g magnitude | 19.33 (0.01) | 19.35 | 19.33 (0.01) | 19.35 (0.02) | 19.35 | 19.37 (0.02) | |||||
| r magnitude | 18.77 (0.009) | 18.79 | 18.77 (0.009) | 18.79 (0.01) | 18.79 | 18.78 (0.01) | |||||
| i magnitude | 18.02 (0.008) | 18.04 | 18.02 (0.008) | 18.04 (0.01) | 18.04 | 18.04 (0.01) | |||||
| z magnitude | 17.53 (0.01) | 17.56 | 17.53 (0.01) | 17.56 (0.02) | 17.56 | 17.56 (0.02) | |||||
| G magnitude | 18.72 (0.04) | 18.68 | 18.72 (0.01) | ||||||||
| BP magnitude | 19.23 (0.04) | 19.23 | |||||||||
| RP magnitude | 17.63 (0.01) | 17.62 | |||||||||
| Pan g magnitude | 19.31 (0.01) | ||||||||||
| Pan r magnitude | 18.80 (0.009) | ||||||||||
| Pan i magnitude | 18.05 (0.003) | ||||||||||
| Pan z magnitude | 17.66 (0.003) | ||||||||||
| Pan y magnitude | 17.43 (0.02) | ||||||||||
| E(B-V) | 0.061 | ||||||||||
* 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.