All names: 1SWASP J225848.13+251544.0, UBV M 43055, CRTS J225848.1+251542, GD 245, GEN# +6.10060245, Gaia DR3 2843374388402149632, Gaia EDR3 2843374388402149632, V* MS Peg, WISE J225848.23+251543.2, UCAC4 577-129703, Gaia DR2 2843374388402149632, uvby98 610060245, EGGR 232, WD 2256+24, WD 2256+249, GSC 02238-00737, ATO J344.7011+25.2619, TIC 436747174, 2MASS J22584811+2515439
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Zuckerman et al. 2003 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 58 48.29 (0.02) | 22 58 48.29 (0.03) | 22 58 48.29 | 22 58 48.14 (0.02) | 22 58 47.35 | |||||
| Declination | 25 15 42.75 (0.02) | 25 15 42.79 (0.03) | 25 15 42.75 | 25 15 43.91 (0.02) | 25 15 47.16 | |||||
| Spectral type | DA | DA | DA2.2 | DA4 | ||||||
| Effective temperature | [K] | 22500.0 (306) | 22840.0 (355) | 22000.0 | ||||||
| log(g) | [cgs] | 7.81 (0.09) | 7.84 (0.05) | 8.00 | ||||||
| Mass | [M☉] | 0.532 (0.04) | 0.54 (0.02) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(C/H) | -6.1 (0.2) | |||||||||
| log(N/H) | ||||||||||
| log(O/H) | ||||||||||
| log(Na/H) | ||||||||||
| log(Mg/H) | ||||||||||
| log(Al/H) | ||||||||||
| log(Si/H) | -6.85 (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] | 19.96 (0.03) | 19.97 (0.05) | 19.96 | 19.96 (0.03) | |||||
| Distance | [pc] | 50.10 (0.07) | 50.08 (0.1) | 46.00 | 50.10 | 50.10 (0.07) | ||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 132.7318103 (0.02) | 132.75998 (0.06) | 132.732 (0.02) | ||||||
| Proper motion (declination) | [mas/yr] | -72.22902572 (0.03) | -72.20183172 (0.07) | -72.229 (0.03) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | |||||||||
| B magnitude | 13.70 (0.01) | |||||||||
| V magnitude | 13.68 (0.05) | 13.65 (0.01) | ||||||||
| R magnitude | 13.83 (0.07) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 11.68 (0.02) | |||||||||
| H magnitude | 11.18 (0.03) | |||||||||
| K magnitude | 10.91 (0.02) | |||||||||
| u magnitude | ||||||||||
| g magnitude | 13.60 (0.01) | |||||||||
| r magnitude | 13.77 (0.01) | |||||||||
| i magnitude | 13.43 (0.01) | |||||||||
| z magnitude | ||||||||||
| G magnitude | 13.46 (0.004) | 13.46 | 13.46 | 13.46 (0.003) | ||||||
| BP magnitude | 13.62 (0.004) | 13.60 | ||||||||
| RP magnitude | 13.02 (0.005) | 13.03 | ||||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.004 | |||||||||
* 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.