All names: LAMOST J123154.03+354550.3, SDSS J123154.04+354550.3, SDSS J123154.03+354550.2, WIRED J123154.03+354550.3, Gaia EDR3 1519039772641882752, WD 1229+360, Gaia DR3 1519039772641882752, SDSS J123154.03+354550.3, [HHD2009] SDSS J1231+3545, GALEX J123153.9+354551, Gaia DR2 1519039772641882752
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 31 54.04 (0.2) | 12 31 54.03 | 12 31 54.04 (0.4) | 12 31 54.03 | 12 31 54.03 (0.2) | 12 31 53.30 | 12 31 54.04 | |||
| Declination | 35 45 50.00 (0.2) | 35 45 50.29 | 35 45 50.01 (0.2) | 35 45 50.29 | 35 45 50.39 (0.2) | 35 45 45.00 | 35 45 50.30 | |||
| Spectral type | DA+M | DA+M | DA3.4 | DA+M | ||||||
| Effective temperature | [K] | 15782.0 (732) | 9771.0 (85) | |||||||
| log(g) | [cgs] | 7.53 (0.2) | 7.92 (0.1) | |||||||
| Mass | [M☉] | 0.39 (0.07) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 1.53 (0.3) | 1.52 (0.4) | 1.53 (0.3) | ||||||
| Distance | [pc] | 654.99 (145) | 659.26 (175) | 136.00 (10) | 655.01 (145) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 4.086807482 (0.2) | 5.193472509 (0.6) | 4.087 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -24.10865386 (0.3) | -24.0641649 (0.4) | -24.109 (0.3) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | yes | WDMS | |||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 19.64 (0.03) | 19.67 | 19.64 (0.03) | 19.67 | 19.64 (0.03) | |||||
| g magnitude | 19.30 (0.01) | 19.32 | 19.29 (0.01) | 19.31 | 19.30 (0.02) | |||||
| r magnitude | 19.47 (0.01) | 19.46 | 19.47 (0.01) | 19.46 | 19.46 (0.02) | |||||
| i magnitude | 19.18 (0.02) | 19.20 | 19.18 (0.02) | 19.19 | 19.18 (0.02) | |||||
| z magnitude | 18.77 (0.03) | 18.81 | 18.77 (0.03) | 18.80 | 18.77 (0.03) | |||||
| G magnitude | 19.21 (0.03) | 19.24 | 19.21 (0.004) | |||||||
| BP magnitude | 19.37 (0.03) | 19.39 | ||||||||
| RP magnitude | 18.85 (0.03) | 18.76 | ||||||||
| Pan g magnitude | 19.31 (0.01) | |||||||||
| Pan r magnitude | 19.53 (0.03) | |||||||||
| Pan i magnitude | 19.21 (0.008) | |||||||||
| Pan z magnitude | 18.86 (0.02) | |||||||||
| Pan y magnitude | 18.59 (0.02) | |||||||||
| 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.