All names: WD 0000+171, Gaia DR2 2772948126020805376, Gaia EDR3 2772948126020805376, 2MASS J00023489+1727198, PG 0000+172, Gaia DR3 2772948126020805376, UCAC3 215-201, TIC 427686707, USNO-B1.0 1074-00000687
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 02 34.97 (0.04) | 00 02 34.97 (0.07) | 00 02 34.97 | 00 02 34.91 (0.04) | 00 02 35.88 | ||||
| Declination | 17 27 18.93 (0.04) | 17 27 18.96 (0.07) | 17 27 18.93 | 17 27 19.86 (0.04) | 17 27 24.12 | ||||
| Spectral type | DA | DA | DA2.4 | DA2.5 | |||||
| Effective temperature | [K] | 21268.0 (289) | 21130.0 (325) | 21100.0 (377) | |||||
| log(g) | [cgs] | 7.93 (0.09) | 8.00 (0.05) | 7.97 (0.02) | |||||
| Mass | [M☉] | 0.587 (0.05) | 0.63 (0.03) | 0.612 (0.01) | |||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| log(C/H) | <-8.30 | ||||||||
| log(N/H) | |||||||||
| log(O/H) | |||||||||
| log(Na/H) | |||||||||
| log(Mg/H) | |||||||||
| log(Al/H) | |||||||||
| log(Si/H) | -8.1 (0.1) | ||||||||
| 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] | 9.20 (0.05) | 9.29 (0.09) | 9.20 | 9.20 (0.05) | ||||
| Distance | [pc] | 108.71 (0.6) | 107.59 (1) | 108.00 | 108.71 | 108.71 (0.6) | |||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 59.09030123 (0.05) | 58.90094189 (0.2) | 59.09 (0.05) | |||||
| Proper motion (declination) | [mas/yr] | -58.21995859 (0.06) | -57.95723769 (0.1) | -58.22 (0.06) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.80 | ||||||||
| V magnitude | 15.81 (0.05) | 15.80 | |||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.26 (0.02) | ||||||||
| H magnitude | 16.30 (0.04) | ||||||||
| K magnitude | 16.24 (0.2) | ||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 15.84 (0.003) | 15.86 | 15.84 | 15.84 (0.003) | |||||
| BP magnitude | 15.75 (0.003) | 15.73 | |||||||
| RP magnitude | 16.04 (0.005) | 16.04 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.007 | ||||||||
* 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.