All names: Gaia DR2 1692021543289085184, ** LDS 1755A, GALEX J124201.8+750845, FBS 1240+754, 2MASS J12420219+7508453, Gaia EDR3 1692021543289085184, Gaia DR3 1692021543289085184, LSPM J1242+7508W, ** ZUC 10A, LB 261, FBS B 1003, PG 1240+754, LP 20-406, WDS J12423+7510A, WD 1240+754, WDJ124202.13+750845.51, G 255-B18A, NLTT 31644, TIC 154567033
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 42 01.30 (0.02) | 12 42 01.32 (0.04) | 12 42 01.30 | 12 42 02.14 (0.02) | 12 42 01.32 | 12 42 18.00 | |||||||
| Declination | 75 08 44.95 (0.02) | 75 08 44.97 (0.04) | 75 08 44.95 | 75 08 45.51 (0.02) | 75 08 44.97 | 75 09 34.56 | |||||||
| Spectral type | DA | DA | DA2.6 | DA4 | |||||||||
| Effective temperature | [K] | 16108.0 | 18278.0 | 19580.0 (332) | 18750.0 (322) | 18716.0 (198) | |||||||
| log(g) | [cgs] | 7.71 | 7.95 | 7.93 (0.05) | 7.83 (0.05) | 7.89 (0.009) | |||||||
| Mass | [M☉] | 0.465 | 0.567 | 0.58 (0.03) | 0.53 (0.03) | 0.56 (0.007) | |||||||
| log(Luminosity) | [L☉] | -1.62 | |||||||||||
| Cooling age | [Gyr] | 0.0953 | 0.0901 | 0.0832 | |||||||||
| 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] | 12.47 (0.03) | 12.42 (0.05) | 12.47 | 12.47 (0.03) | 12.42 (0.05) | |||||||
| Distance | [pc] | 80.18 (0.2) | 80.53 (0.3) | 91.00 | 132.00 | 80.18 | 80.18 (0.2) | 80.53 (0.3) | |||||
| Composition | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -201.8845597 (0.03) | -201.8549123 (0.08) | -201.885 (0.03) | -201.8549123 | ||||||||
| Proper motion (declination) | [mas/yr] | -35.16332015 (0.03) | -35.0914937 (0.07) | -35.163 (0.03) | -35.0914937 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 16.60 | ||||||||||||
| V magnitude | 16.20 | 15.50 | |||||||||||
| R magnitude | 16.40 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 15.66 (0.09) | ||||||||||||
| H magnitude | 15.37 (0.2) | ||||||||||||
| K magnitude | |||||||||||||
| u magnitude | |||||||||||||
| g magnitude | |||||||||||||
| r magnitude | |||||||||||||
| i magnitude | |||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 15.27 (0.001) | 15.29 | 15.27 | 15.27 (0.003) | 15.29 | ||||||||
| BP magnitude | 15.19 (0.001) | 15.17 | 15.17 | ||||||||||
| RP magnitude | 15.44 (0.002) | 15.44 | 15.44 | ||||||||||
| Pan g magnitude | 15.15 (0.002) | ||||||||||||
| Pan r magnitude | 15.44 (0.002) | ||||||||||||
| Pan i magnitude | 15.77 (0.005) | ||||||||||||
| Pan z magnitude | 16.00 (0.005) | ||||||||||||
| Pan y magnitude | 16.13 (0.008) | ||||||||||||
| E(B-V) | 0.006 | ||||||||||||
* 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.