All names: J1144+1218, LSPM J1144+1218, SDSS J114441.93+121829.2, Gaia EDR3 3916712206301454720, SDSS J114441.92+121829.2, Gaia DR3 3916712206301454720, WD 1142+125, USNO-B1.0 1023-00242376, Gaia DR2 3916712206301454720, WDJ114441.89+121829.34
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | Blouin 2020 | Coutu et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Hollands et al. 2017 | Koester et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 44 42.05 (0.1) | 11 44 41.93 | 11 44 41.89 | 11 44 42.04 (0.2) | 11 44 42.05 | 11 44 41.89 (0.1) | 11 44 42.04 | 11 44 41.83 | ||||||||||
| Declination | 12 18 28.48 (0.1) | 12 18 29.24 | 12 18 29.34 | 12 18 28.51 (0.2) | 12 18 28.48 | 12 18 29.35 (0.1) | 12 18 28.51 | 12 18 20.52 | ||||||||||
| Spectral type | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | ||||||||
| Effective temperature | [K] | 5345.0 (16) | 5320.0 (92) | 5500.0 (47) | 5872.0 | 5625.0 | 5434.0 (100) | 5300.0 | 5118.0 (48) | |||||||||
| log(g) | [cgs] | 8.01 (0.01) | 8.01 (0.03) | 8.11 | 8.22 | 8.07 | 8.00 (0) | 7.89 (0.03) | ||||||||||
| Mass | [M☉] | 0.576 (0.01) | 0.577 (0.02) | 0.6356 | 0.725 | 0.614 | 0.506 (0.02) | |||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||||
| Cooling age | [Gyr] | 4.8200 | 4.8300 | 4.0770 | 4.1810 | 5.0000 | ||||||||||||
| log(H/He) | -4.0 | <-3.0 | -3.3 | |||||||||||||||
| log(C/He) | ||||||||||||||||||
| log(Ca/He) | -9.3 | -9.3 (0.1) | -9.2509 (0.09) | -9.33 | -9.9 | |||||||||||||
| log(Ca/H) | ||||||||||||||||||
| log(N/He) | ||||||||||||||||||
| log(O/He) | ||||||||||||||||||
| log(Na/He) | ||||||||||||||||||
| log(Mg/He) | -7.8 (0.2) | -8.13 | -8.2 | |||||||||||||||
| log(Al/He) | ||||||||||||||||||
| log(Si/He) | ||||||||||||||||||
| log(P/He) | ||||||||||||||||||
| log(S/He) | ||||||||||||||||||
| log(Cl/He) | ||||||||||||||||||
| log(Sc/He) | ||||||||||||||||||
| log(Ti/He) | ||||||||||||||||||
| log(V/He) | ||||||||||||||||||
| log(Cr/He) | -10.22 | |||||||||||||||||
| log(Mn/He) | ||||||||||||||||||
| log(Fe/He) | -8.3 (0.2) | -8.37 | -8.6 | |||||||||||||||
| log(Co/He) | ||||||||||||||||||
| log(Ni/He) | -10.13 | |||||||||||||||||
| log(Cu/He) | ||||||||||||||||||
| log(Zn/He) | ||||||||||||||||||
| log(Ga/He) | ||||||||||||||||||
| log(Ge/He) | ||||||||||||||||||
| log(Sr/He) | ||||||||||||||||||
| Parallax | [mas] | 19.96 (0.2) | 19.78 (0.2) | 19.78 | 19.78 (0.2) | 19.96 | 19.96 (0.2) | 19.78 (0.2) | ||||||||||
| Distance | [pc] | 50.09 (0.4) | 50.56 (0.6) | 50.48 (0.6) | 50.54 (0.6) | 50.54 (0.6) | 50.20 (6) | 50.09 | 50.09 (0.4) | 50.54 (0.6) | ||||||||
| Composition | He | He | He | He | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 142.5149418 (0.1) | 142.5716817 (0.3) | 142.515 (0.1) | 142.572 | |||||||||||||
| Proper motion (declination) | [mas/yr] | -54.05908578 (0.1) | -53.50468982 (0.3) | -54.059 (0.1) | -53.505 | |||||||||||||
| Variability | ||||||||||||||||||
| Magnetic | ||||||||||||||||||
| Bd | [MG] | |||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||
| Binarity | ||||||||||||||||||
| B magnitude | 18.40 | |||||||||||||||||
| V magnitude | ||||||||||||||||||
| R magnitude | 17.90 | |||||||||||||||||
| I magnitude | ||||||||||||||||||
| J magnitude | 17.07 (0.02) | |||||||||||||||||
| H magnitude | 16.93 (0.04) | |||||||||||||||||
| K magnitude | 16.95 (0.06) | |||||||||||||||||
| u magnitude | 20.70 (0.08) | 20.71 (0.08) | 20.71 (0.08) | 20.71 (0.08) | 20.72 (0.09) | 20.70 (0.08) | 20.70 (0.08) | 20.72 | ||||||||||
| g magnitude | 18.42 (0.007) | 18.42 (0.02) | 18.42 (0.02) | 18.41 (0.02) | 18.42 (0.007) | 18.42 (0.007) | 18.41 | |||||||||||
| r magnitude | 17.85 (0.006) | 17.85 (0.02) | 17.85 (0.02) | 17.85 (0.02) | 17.85 (0.006) | 17.85 (0.006) | 17.84 | |||||||||||
| i magnitude | 17.74 (0.007) | 17.76 (0.02) | 17.76 (0.02) | 17.75 (0.02) | 17.74 (0.007) | 17.74 (0.007) | 17.75 | |||||||||||
| z magnitude | 17.77 (0.02) | 17.76 (0.02) | 17.76 (0.02) | 17.76 (0.02) | 17.77 (0.02) | 17.77 (0.02) | 17.75 | |||||||||||
| G magnitude | 17.94 (0.02) | 17.97 | 17.94 | 17.94 (0.003) | 17.97 | |||||||||||||
| BP magnitude | 18.32 (0.02) | 18.36 | 18.36 | |||||||||||||||
| RP magnitude | 17.46 (0.01) | 17.47 | 17.47 | |||||||||||||||
| Pan g magnitude | 18.32 (0.007) | 18.32 (0.006) | ||||||||||||||||
| Pan r magnitude | 17.87 (0.004) | 17.87 (0.003) | ||||||||||||||||
| Pan i magnitude | 17.78 (0.004) | 17.78 (0.004) | ||||||||||||||||
| Pan z magnitude | 17.79 (0.009) | 17.79 (0.009) | ||||||||||||||||
| Pan y magnitude | 17.81 (0.007) | 17.81 (0.008) | ||||||||||||||||
| E(B-V) | 0.001 | |||||||||||||||||
* 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.