All names: LTT 17166, J0054+2256, EGGR 562, UCAC4 565-001905, USNO-B1.0 1129-00014385, TIC 436545818, G69-31, 2MASS J00544584+2256106, Gaia EDR3 2803596046661176576, 00547+2256, PM J00547+2256, LHS 5016, Gaia DR2 2803596046661176576, WDJ005445.95+225610.59, Gaia DR3 2803596046661176576, GALEX J005446.0+225610, G 69-31, WD 0052+22, WD 0052+226, NLTT 3017, LSPM J0054+2256
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Gaia DR2 | Stilism | Limoges et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 54 46.47 (0.05) | 00 54 46.46 (0.08) | 00 54 46.46 (0.08) | 00 54 46.47 | 00 54 45.95 (0.05) | 00 54 46.46 | 00 54 45.24 | |||||||
| Declination | 22 56 08.48 (0.04) | 22 56 08.55 (0.06) | 22 56 08.55 (0.06) | 22 56 08.48 | 22 56 10.59 (0.04) | 22 56 08.55 | 22 56 15.00 | |||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA5.2 | DA5 | ||||||
| Effective temperature | [K] | 9654.0 (146) | 9522.0 (74) | 9619.6 (115) | 9540.0 (142) | 9700.0 (143) | 9438.0 (92) | |||||||
| log(g) | [cgs] | 8.63 (0.03) | 8.61 (0.01) | 8.64 (0.03) | 8.55 (0.06) | 8.80 (0.06) | 8.61 (0.01) | |||||||
| Mass | [M☉] | 0.999 (0.02) | 0.99 (0.008) | 0.95 (0.04) | 1.1 (0.03) | 0.985 (0.01) | ||||||||
| log(Luminosity) | [L☉] | -3.26 | ||||||||||||
| Cooling age | [Gyr] | 2.2500 | ||||||||||||
| 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] | 27.38 (0.06) | 27.38 (0.06) | 27.46 (0.1) | 27.46 (0.1) | 27.46 (0.1) | 27.38 | 27.38 (0.06) | 27.46 (0.1) | |||||
| Distance | [pc] | 36.53 (0.08) | 36.52 (0.08) | 36.42 (0.1) | 36.42 (0.1) | 36.42 (0.1) | 37.10 (2) | 31.00 | 36.53 | 36.53 (0.08) | 36.42 (0.1) | |||
| Composition | H | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 450.2388629 (0.06) | 450.2861793 (0.2) | 450.239 (0.06) | 450.2861793 | |||||||||
| Proper motion (declination) | [mas/yr] | -131.5799958 (0.06) | -131.4133273 (0.1) | -131.58 (0.06) | -131.4133273 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 16.29 (0.09) | |||||||||||||
| V magnitude | 16.09 (0.07) | |||||||||||||
| R magnitude | 16.10 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 15.98 (0.01) | 16.02 (0.08) | ||||||||||||
| H magnitude | 16.11 (0.2) | 16.11 (0.2) | ||||||||||||
| K magnitude | 15.52 (0.2) | 15.52 (0.2) | ||||||||||||
| u magnitude | 16.52 (0.03) | 16.52 (0.007) | ||||||||||||
| g magnitude | 16.18 (0.004) | |||||||||||||
| r magnitude | 16.22 (0.004) | |||||||||||||
| i magnitude | 16.31 (0.005) | |||||||||||||
| z magnitude | 16.47 (0.008) | |||||||||||||
| G magnitude | 16.14 (0.003) | 16.16 | 16.16 | 16.14 | 16.14 (0.003) | 16.16 | ||||||||
| BP magnitude | 16.22 (0.003) | 16.20 | 16.20 | |||||||||||
| RP magnitude | 16.02 (0.005) | 16.03 | 16.03 | |||||||||||
| Pan g magnitude | 16.15 (0.01) | 16.17 (0.007) | ||||||||||||
| Pan r magnitude | 16.23 (0.002) | 16.23 (0.005) | ||||||||||||
| Pan i magnitude | 16.34 (0.004) | 16.35 (0.002) | ||||||||||||
| Pan z magnitude | 16.47 (0.002) | 16.47 (0.005) | ||||||||||||
| Pan y magnitude | 16.57 (0.005) | 16.55 (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.