All names: LAMOST J122325.50+281143.5, SDSS J122325.49+281143.5, SDSS J122325.50+281143.6, Gaia DR3 4010007455840870272, WIRED J122325.49+281143.5, SDSS J122325.44+281143.4, 2MASS J12232547+2811438, GALEX J122325.5+281144, WD 1220+284, Gaia EDR3 4010007455840870272, Gaia DR2 4010007455840870272, TIC 97758285, SDSS J122325.50+281143.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Guo et al. 2015 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 23 25.48 (0.6) | 12 23 25.50 | 12 23 25.48 (0.8) | 12 23 25.49 | 12 23 25.48 (0.6) | 12 23 25.27 | 12 23 25.50 | ||||
| Declination | 28 11 43.40 (0.5) | 28 11 43.58 | 28 11 43.40 (0.7) | 28 11 43.51 | 28 11 43.60 (0.5) | 28 11 40.56 | 28 11 43.57 | ||||
| Spectral type | DA+M | DA+M | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 20331.0 (626) | 6300.0 (3) | ||||||||
| log(g) | [cgs] | 7.99 (0.1) | 5.01 (0.02) | ||||||||
| Mass | [M☉] | 0.62 (0.07) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 3.76 (0.6) | 3.76 (0.6) | ||||||||
| Distance | [pc] | 265.64 (44) | 515.00 (211) | 265.65 (44) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.483304837 (0.7) | 2.483 (0.7) | ||||||||
| Proper motion (declination) | [mas/yr] | -12.8973932 (0.6) | -12.897 (0.6) | ||||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.43 (0.04) | ||||||||||
| H magnitude | 14.88 (0.05) | ||||||||||
| K magnitude | 14.68 (0.008) | ||||||||||
| u magnitude | 19.03 (0.02) | 19.02 | 19.03 (0.02) | 19.02 | 19.04 (0.02) | ||||||
| g magnitude | 18.63 (0.008) | 18.72 | 18.63 (0.008) | 18.72 | 18.70 (0.02) | ||||||
| r magnitude | 18.33 (0.008) | 18.39 | 18.32 (0.008) | 18.39 | 18.39 (0.02) | ||||||
| i magnitude | 17.44 (0.007) | 17.53 | 17.44 (0.007) | 17.53 | 17.51 (0.01) | ||||||
| z magnitude | 16.79 (0.01) | 16.86 | 16.80 (0.01) | 16.85 | 16.84 (0.01) | ||||||
| G magnitude | 18.28 (0.03) | 18.18 | 18.28 (0.01) | ||||||||
| BP magnitude | 18.65 (0.03) | 18.64 | |||||||||
| RP magnitude | 17.00 (0.01) | 17.01 | |||||||||
| Pan g magnitude | 18.62 (0.007) | ||||||||||
| Pan r magnitude | 18.41 (0.01) | ||||||||||
| Pan i magnitude | 17.49 (0.02) | ||||||||||
| Pan z magnitude | 16.95 (0.006) | ||||||||||
| Pan y magnitude | 16.68 (0.006) | ||||||||||
| E(B-V) | 0.014 | ||||||||||
* 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.