All names: LP 644-81, WDJ001737.73-051646.15, 2MASS J00173770-0516456, Gaia DR3 2443826805441462656, PSO J004.4079-05.2807, LHS 5002, SDSS J001737.86-051649.6, NLTT 888, Gaia DR2 2443826805441462656, TIC 244136283, Gaia EDR3 2443826805441462656, J0017-0516
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 17 37.99 (0.09) | 00 17 37.98 (0.1) | 00 17 37.99 | 00 17 37.73 (0.09) | 00 17 37.98 | |||||||
| Declination | -05 16 52.59 (0.07) | -05 16 52.39 (0.08) | -05 16 52.59 | -05 16 46.15 (0.07) | -05 16 52.39 | |||||||
| Spectral type | DA | DA | DA | DA | ||||||||
| Effective temperature | [K] | 5711.0 (20) | 5630.0 (40) | 5627.0 | 5351.0 | 5904.0 (56) | ||||||
| log(g) | [cgs] | 7.96 (0.01) | 7.92 (0.03) | 7.91 | 7.72 | 8.06 (0.02) | ||||||
| Mass | [M☉] | 0.564 (0.009) | 0.537 (0.01) | 0.531 | 0.413 | 0.622 (0.02) | ||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 2.5100 | 2.3980 (0.1) | 2.3550 | 2.6170 | |||||||
| 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] | 21.47 (0.1) | 21.40 (0.1) | 21.41 (0.2) | 21.40 (0.2) | 21.47 | 21.47 (0.1) | 21.40 (0.2) | ||||
| Distance | [pc] | 46.57 (0.2) | 46.73 (0.3) | 46.72 (0.3) | 46.72 (0.3) | 46.57 | 46.57 (0.2) | 46.72 (0.3) | ||||
| Composition | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 243.7413375 (0.1) | 243.797 (0.4) | 243.741 (0.1) | 243.7974251 | |||||||
| Proper motion (declination) | [mas/yr] | -402.5756893 (0.08) | -402.589 (0.2) | -402.576 (0.08) | -402.5886024 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 16.90 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 16.48 (0.01) | 16.48 (0.1) | 16.48 (0.1) | |||||||||
| H magnitude | 16.26 (0.01) | 16.35 (0.2) | 16.35 (0.2) | |||||||||
| K magnitude | 16.13 (0.03) | |||||||||||
| u magnitude | 19.02 (0.03) | 19.01 (0.03) | 19.01 (0.03) | |||||||||
| g magnitude | 17.91 (0.006) | 17.98 (0.006) | ||||||||||
| r magnitude | 17.52 (0.003) | 17.54 (0.006) | ||||||||||
| i magnitude | 17.35 (0.006) | 17.35 (0.006) | ||||||||||
| z magnitude | 17.32 (0.007) | 17.34 (0.02) | ||||||||||
| G magnitude | 17.53 (0.01) | 17.55 | 17.53 | 17.53 (0.003) | 17.55 | |||||||
| BP magnitude | 17.86 (0.01) | 17.90 | 17.90 | |||||||||
| RP magnitude | 17.02 (0.008) | 17.01 | 17.01 | |||||||||
| Pan g magnitude | 17.91 (0.006) | 17.91 (0.006) | 17.91 (0.006) | |||||||||
| Pan r magnitude | 17.52 (0.003) | 17.52 (0.003) | 17.52 (0.003) | |||||||||
| Pan i magnitude | 17.35 (0.01) | 17.35 (0.01) | 17.35 (0.01) | |||||||||
| Pan z magnitude | 17.32 (0.007) | 17.32 (0.007) | 17.32 (0.007) | |||||||||
| Pan y magnitude | 17.27 (0.01) | 17.27 (0.01) | 17.27 (0.01) | |||||||||
| 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.