All names: SDSS J232438.31-093106.4, WD 2322-097, [SGR2010] J2324-0931, WIRED J232438.31-093106.4, 2MASS J23243831-0931057, WISE J232438.27-093105.6, USNO-B1.0 0804-00686619, SDSS J232438.31-093106.5, Gaia EDR3 2437777017203188480, Gaia DR2 2437777017203188480, WISEA J232438.27-093105.8, TIC 49674736, SDSS J232438.31-093106.6
| 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 | 23 24 38.31 (0.2) | 23 24 38.32 | 23 24 38.31 (0.3) | 23 24 38.31 | 23 24 38.31 (190) | 23 24 38.31 | 23 24 37.58 | 23 24 38.31 | |||
| Declination | -09 31 06.82 (0.2) | -09 31 06.53 | -09 31 06.81 (0.3) | -09 31 06.38 | -09 31 05.73 (170) | -09 31 06.51 | -09 31 00.48 | -09 31 06.46 | |||
| Spectral type | DB+M | DB+M | DB+M | DB1.4+dM | DB+M | ||||||
| Effective temperature | [K] | 19340.0 (96) | 16800.0 (179) | 15949.0 (187) | |||||||
| log(g) | [cgs] | 8.28 (0.02) | 7.74 (0.09) | 7.63 (0.09) | |||||||
| Mass | [M☉] | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 2.47 (0.2) | 2.46 (0.4) | ||||||||
| Distance | [pc] | 404.89 (37) | 406.44 (61) | 2408.00 (879) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.767627742 (0.3) | -5.253639357 (0.7) | 2.0 (3) | 5.2 | ||||||
| Proper motion (declination) | [mas/yr] | -14.3105648 (0.3) | -13.85123367 (0.7) | -16.0 (3) | -15.9 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||
| B magnitude | 18.30 | ||||||||||
| V magnitude | 18.63 | ||||||||||
| R magnitude | 18.50 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.19 (0.08) | ||||||||||
| H magnitude | 15.56 (0.1) | ||||||||||
| K magnitude | 15.35 (0.2) | ||||||||||
| u magnitude | 18.53 (0.02) | 18.56 | 18.53 (0.02) | 18.56 (0.02) | 18.56 | 18.55 (0.02) | |||||
| g magnitude | 18.57 (0.008) | 18.64 | 18.58 (0.009) | 18.64 (0.02) | 18.64 | 18.64 (0.02) | |||||
| r magnitude | 18.68 (0.01) | 18.80 | 18.79 (0.01) | 18.80 (0.01) | 18.80 | 18.79 (0.01) | |||||
| i magnitude | 18.22 (0.01) | 18.39 | 18.24 (0.01) | 18.39 (0.02) | 18.39 | 18.38 (0.02) | |||||
| z magnitude | 17.62 (0.02) | 17.73 | 17.64 (0.03) | 17.73 (0.03) | 17.73 | 17.69 (0.03) | |||||
| G magnitude | 18.81 (0.02) | 18.88 | |||||||||
| BP magnitude | 18.68 (0.02) | 18.65 | |||||||||
| RP magnitude | 17.80 (0.02) | 17.79 | |||||||||
| Pan g magnitude | 18.64 (0.01) | ||||||||||
| Pan r magnitude | 18.80 (0.01) | ||||||||||
| Pan i magnitude | 18.39 (0.02) | ||||||||||
| Pan z magnitude | 17.82 (0.02) | ||||||||||
| Pan y magnitude | 17.54 (0.01) | ||||||||||
| E(B-V) | 0.020 | ||||||||||
* 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.