All names: Gaia DR2 6394241555306538240, WISE J225510.69-631031.8, TIC 237313246, UCAC4 135-178340, WDJ225510.55-631031.04, Gaia EDR3 6394241555306538240, USNO-B1.0 0268-00835064, 2MASS J22551052-6310310, WD 2251-634, Gaia DR3 6394241555306538240, MCT 2251-6326
| Parameter | Unit | Gaia EDR3 | Bergeron et al. 2021 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 55 10.80 (0.02) | 22 55 10.80 (0.03) | 22 55 10.80 | 22 55 10.55 (0.02) | 22 55 10.80 | 22 55 09.77 | ||||
| Declination | -63 10 32.52 (0.02) | -63 10 32.47 (0.03) | -63 10 32.52 | -63 10 31.04 (0.02) | -63 10 32.47 | -63 10 29.28 | ||||
| Spectral type | DA | DA | DA | DA2.5 | DA | |||||
| Effective temperature | [K] | 18935.0 (410) | 20340.0 (301) | 19991.0 (148) | ||||||
| log(g) | [cgs] | 7.92 (0.07) | 7.95 (0.04) | 8.00 (0.006) | ||||||
| Mass | [M☉] | 0.575 (0.04) | 0.6 (0.02) | 0.622 (0.005) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.0687 | ||||||||
| 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] | 21.38 (0.02) | 21.30 (0.04) | 21.38 | 21.38 (0.02) | 21.30 (0.04) | ||||
| Distance | [pc] | 46.78 (0.05) | 46.00 | 46.95 (0.09) | 53.00 | 46.78 | 46.78 (0.05) | 46.95 (0.09) | ||
| Composition | H | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 109.3674364 (0.02) | 109.6087642 (0.06) | 109.367 (0.02) | 109.6087642 | |||||
| Proper motion (declination) | [mas/yr] | -92.63150891 (0.02) | -92.74187196 (0.06) | -92.632 (0.02) | -92.74187196 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 14.06 (0.02) | |||||||||
| V magnitude | 14.11 (0.01) | |||||||||
| R magnitude | 14.31 (0.08) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 14.59 (0.04) | |||||||||
| H magnitude | 14.66 (0.07) | |||||||||
| K magnitude | 14.97 (0.1) | |||||||||
| u magnitude | ||||||||||
| g magnitude | 13.98 (0.02) | |||||||||
| r magnitude | 14.34 (0.02) | |||||||||
| i magnitude | 14.64 (0.01) | |||||||||
| z magnitude | ||||||||||
| G magnitude | 14.14 (0.001) | 14.16 | 14.14 | 14.14 (0.003) | 14.16 | |||||
| BP magnitude | 14.06 (0.001) | 14.05 | 14.05 | |||||||
| RP magnitude | 14.32 (0.0009) | 14.32 | 14.32 | |||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.002 | |||||||||
* 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.