All names: SDSS J124836.31+294231.2, A2 42, WDJ124836.35+294231.85, Gaia EDR3 1465092887460185600, SDSS J124836.32+294231.2, SDSS J124836.32+294231.3, GALEX J124836.3+294231, Gaia DR2 1465092887460185600, J1248+2942, Gaia DR3 1465092887460185600, WD 1246+299.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Hardy et al. 2023a | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Ferrario et al. 2015 | Kulebi et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 48 36.26 (0.08) | 12 48 36.32 | 12 48 36.26 (0.09) | 12 48 36.31 | 12 48 36.26 | 12 48 36.35 (0.08) | 12 48 36.26 | 12 48 35.88 | 12 48 36.32 | |||||||||
| Declination | 29 42 29.91 (0.06) | 29 42 31.27 | 29 42 29.97 (0.08) | 29 42 31.21 | 29 42 29.91 | 29 42 31.85 (0.06) | 29 42 29.97 | 29 42 27.36 | 29 42 31.26 | |||||||||
| Spectral type | DAH | DA | DA | DAH | DA | DAH | DAH | DAH7.2 | DAH | DA | ||||||||
| Effective temperature | [K] | 6611.2 (44) | 6899.0 (28) | 6805.0 | 6552.0 | 7000.0 | 7009.0 (86) | 6489.0 (20) | ||||||||||
| log(g) | [cgs] | 7.96 (0.01) | 8.06 (0.01) | 8.01 | 7.88 | 8.00 (0) | 8.08 (0.02) | 10.00 (0.002) | ||||||||||
| Mass | [M☉] | 0.5653814094283738 (0.01) | 0.63 (0.01) | 0.595 | 0.506 | 0.64 (0.02) | ||||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||||
| Cooling age | [Gyr] | 1.7900 | 1.6470 | 1.5880 | ||||||||||||||
| log(H/He) | ||||||||||||||||||
| log(C/He) | ||||||||||||||||||
| log(Ca/He) | ||||||||||||||||||
| log(Ca/H) | ||||||||||||||||||
| log(C/H) | ||||||||||||||||||
| log(N/H) | ||||||||||||||||||
| log(O/H) | ||||||||||||||||||
| log(Na/H) | ||||||||||||||||||
| log(Mg/H) | ||||||||||||||||||
| log(Al/H) | ||||||||||||||||||
| log(Si/H) | ||||||||||||||||||
| log(P/H) | ||||||||||||||||||
| log(S/H) | ||||||||||||||||||
| log(Sc/H) | ||||||||||||||||||
| log(Ti/H) | ||||||||||||||||||
| log(Cr/H) | ||||||||||||||||||
| log(Mn/H) | ||||||||||||||||||
| log(Fe/H) | ||||||||||||||||||
| log(Ni/H) | ||||||||||||||||||
| Parallax | [mas] | 15.54 (0.1) | 15.60 (0.1) | 15.60 (0.1) | 15.54 | 15.54 (0.1) | 15.60 (0.1) | |||||||||||
| Distance | [pc] | 64.35 (0.4) | 64.10 (0.5) | 64.09 (0.5) | 64.35 | 64.35 (0.4) | 64.09 (0.5) | |||||||||||
| Composition | H | H | ||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -75.56134388 (0.1) | -75.47458553 (0.2) | -75.561 (0.1) | -75.475 | |||||||||||||
| Proper motion (declination) | [mas/yr] | -121.3330199 (0.1) | -121.3682556 (0.1) | -121.333 (0.1) | -121.368 | |||||||||||||
| Variability | ||||||||||||||||||
| Magnetic | yes | yes | yes | yes | ||||||||||||||
| Bd | [MG] | 3.884441990482373 | 3.95 (0.2) | 3.95 (0.2) | ||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||
| Binarity | ||||||||||||||||||
| B magnitude | 17.50 | |||||||||||||||||
| V magnitude | ||||||||||||||||||
| R magnitude | ||||||||||||||||||
| I magnitude | ||||||||||||||||||
| J magnitude | 16.93 (0.02) | |||||||||||||||||
| H magnitude | 16.81 (0.04) | |||||||||||||||||
| K magnitude | 16.76 (0.05) | |||||||||||||||||
| u magnitude | 18.44 (0.01) | 18.44 (0.01) | 18.44 (0.01) | 18.44 (0.01) | 18.44 | 18.47 (0.03) | ||||||||||||
| g magnitude | 17.81 (0.005) | 17.81 (0.005) | 17.81 (0.005) | 17.80 | 17.82 (0.02) | |||||||||||||
| r magnitude | 17.59 (0.006) | 17.59 (0.006) | 17.59 (0.006) | 17.59 | 17.60 (0.01) | |||||||||||||
| i magnitude | 17.54 (0.007) | 17.54 (0.007) | 17.54 (0.007) | 17.54 | 17.55 (0.02) | |||||||||||||
| z magnitude | 17.56 (0.01) | 17.56 (0.01) | 17.56 (0.01) | 17.56 | 17.56 (0.03) | |||||||||||||
| G magnitude | 17.57 (0.01) | 17.59 | 17.57 | 17.57 (0.003) | 17.59 | |||||||||||||
| BP magnitude | 17.78 (0.01) | 17.79 | 17.79 | |||||||||||||||
| RP magnitude | 17.24 (0.01) | 17.24 | 17.24 | |||||||||||||||
| Pan g magnitude | 17.79 (0.005) | 17.79 (0.005) | ||||||||||||||||
| Pan r magnitude | 17.59 (0.003) | 17.59 (0.004) | ||||||||||||||||
| Pan i magnitude | 17.55 (0.006) | 17.55 (0.007) | ||||||||||||||||
| Pan z magnitude | 17.59 (0.003) | 17.59 (0.003) | ||||||||||||||||
| Pan y magnitude | 17.62 (0.01) | 17.62 (0.01) | ||||||||||||||||
| E(B-V) | 0.002 | |||||||||||||||||
* 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.