All names: LAMOST J122149.09+285628.2, Gaia EDR3 4010334384455458560, GALEX J122149.0+285629, 2MASS J12214905+2856278, Gaia DR2 4010334384455458560, TIC 285096062, SDSS J122149.09+285628.2, Gaia DR3 4010334384455458560, WIRED J122149.09+285628.2, WD 1219+292, [HHD2009] SDSS J1221+2856
| 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 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 21 49.08 (0.2) | 12 21 49.09 | 12 21 49.08 (0.3) | 12 21 49.09 | 12 21 49.09 (0.2) | 12 21 48.43 | 12 21 49.09 | |||||
| Declination | 28 56 28.23 (0.2) | 28 56 28.22 | 28 56 28.23 (0.2) | 28 56 28.21 | 28 56 28.17 (0.2) | 28 56 21.84 | 28 56 28.23 | |||||
| Spectral type | DA+M | DA+M? | DA+M | DA3.9 | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 12392.0 (636) | 9500.0 (81) | |||||||||
| log(g) | [cgs] | 7.53 (0.1) | 7.19 (0.1) | |||||||||
| Mass | [M☉] | 0.38 (0.06) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 3.25 (0.3) | 3.00 (0.4) | 3.25 (0.3) | ||||||||
| Distance | [pc] | 307.39 (24) | 333.75 (42) | 261.00 (11) | 307.39 (24) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -9.32485812 (0.2) | -9.970143107 (0.5) | -9.325 (0.2) | ||||||||
| Proper motion (declination) | [mas/yr] | 3.340764773 (0.2) | 3.709116961 (0.5) | 3.341 (0.2) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | yes | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.77 (0.2) | |||||||||||
| H magnitude | 16.01 (0.2) | |||||||||||
| K magnitude | 15.84 (0.02) | |||||||||||
| u magnitude | 19.46 (0.02) | 19.42 | 19.46 (0.02) | 19.41 | 19.39 (0.03) | |||||||
| g magnitude | 18.88 (0.009) | 18.92 | 18.88 (0.009) | 18.91 | 18.90 (0.03) | |||||||
| r magnitude | 18.95 (0.01) | 18.94 | 18.93 (0.01) | 18.93 | 18.93 (0.01) | |||||||
| i magnitude | 18.56 (0.01) | 18.55 | 18.56 (0.01) | 18.55 | 18.54 (0.02) | |||||||
| z magnitude | 18.08 (0.03) | 18.04 | 18.03 (0.02) | 18.04 | 18.03 (0.03) | |||||||
| G magnitude | 18.67 (0.02) | 18.68 | 18.67 (0.004) | |||||||||
| BP magnitude | 18.93 (0.02) | 18.91 | ||||||||||
| RP magnitude | 18.10 (0.02) | 18.12 | ||||||||||
| Pan g magnitude | 18.88 (0.007) | |||||||||||
| Pan r magnitude | 18.93 (0.01) | |||||||||||
| Pan i magnitude | 18.56 (0.007) | |||||||||||
| Pan z magnitude | 18.12 (0.009) | |||||||||||
| Pan y magnitude | 17.86 (0.01) | |||||||||||
| 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.