All names: 2EUVE J1257+22.0, BPM 88611, 1RXS J125702.4+220155, GD 153, EUVE J1256+22.0, RE J1257+220, FS 33, 1SWASP J125702.33+220152.9, LP 378-99, TIC 149505899, WD 1254+223, 2XMM J125702.3+220151, uvby98 600113724, EGGR 187, Gaia DR3 3944400490365194368, 2E 1254.5+2218, [TFW97] J125702.37+220156.00, PSO J194.2595+22.0305, USNO-B1.0 1120-00238733, UCAC4 561-053035, WDJ125702.32+220152.63, SDSS J125702.31+220151.6, 2MASS J12570233+2201526, Gaia EDR3 3944400490365194368, GCRV 21676, 2RE J125702+220148, LSPM J1257+2201, RBS 1186, SDSS J125702.31+220151.5, 2E 2912, [ZEH2003] RX J1257.0+2201 1, PG 1254+223, RX J125702.4+220155, RX J1257.0+2201, CSI+22-12546, RE J1257+22, FAUST 3589, RE J125703+220128, LTT 13724, 2RE J1257+220, J1257+2201, Gaia DR2 3944400490365194368, GEN# +6.10060153, RX J1257.0+2202, WD 1254+233, SDSS J125702.32+220151.6, NLTT 32398, [HMT98] AS 25-0, GSC 01455-01145, 1ES 1254+22.3, L 1336-41, EUVE J1257+22.0
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 57 02.28 (0.03) | 12 57 02.28 (0.05) | 12 57 02.28 | 12 57 02.32 (0.03) | 12 57 02.28 | 12 57 02.21 | ||||||||
| Declination | 22 01 49.39 (0.02) | 22 01 49.49 (0.03) | 22 01 49.39 | 22 01 52.63 (0.02) | 22 01 49.49 | 22 01 59.52 | ||||||||
| Spectral type | DA | DA | DA | DA | DA1.2 | DA1 | ||||||||
| Effective temperature | [K] | 46171.0 (408) | 46171.0 (408) | 40320.0 (626) | 39537.0 (42) | 39450.0 (606) | 69500.0 (3607) | |||||||
| log(g) | [cgs] | 7.94 (0.006) | 7.94 (0.006) | 7.93 (0.05) | 7.59 (0.005) | 7.85 (0.05) | 8.18 (2) | |||||||
| Mass | [M☉] | 0.649 (0.004) | 0.65 (0.004) | 0.64 (0.03) | 0.6 (0.02) | 0.812 (96) | ||||||||
| log(Luminosity) | [L☉] | -0.30 | ||||||||||||
| Cooling age | [Gyr] | 0.0042 | ||||||||||||
| 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] | 14.59 (0.04) | 14.58 (0.06) | 14.59 | 14.59 (0.04) | 14.58 (0.06) | ||||||||
| Distance | [pc] | 68.53 (0.2) | 68.57 (0.3) | 63.00 | 68.00 | 68.53 | 68.53 (0.2) | 68.57 (0.3) | ||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -38.40152627 (0.05) | -38.41010796 (0.1) | -38.402 (0.04) | -38.41010796 | |||||||||
| Proper motion (declination) | [mas/yr] | -202.9901271 (0.05) | -202.9529563 (0.1) | -202.99 (0.05) | -202.9529563 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 13.06 (0.002) | |||||||||||||
| V magnitude | 13.33 | 13.37 | 13.35 (0.004) | |||||||||||
| R magnitude | 13.49 (0.005) | |||||||||||||
| I magnitude | 13.67 (0.007) | |||||||||||||
| J magnitude | 14.01 (0.03) | |||||||||||||
| H magnitude | 14.21 (0.04) | |||||||||||||
| K magnitude | 14.31 (0.06) | |||||||||||||
| u magnitude | 13.35 (0.004) | 13.35 (0.004) | 13.31 | |||||||||||
| g magnitude | 13.21 (0.002) | 13.21 (0.002) | 13.21 | |||||||||||
| r magnitude | 13.74 (0.003) | 13.74 (0.003) | 13.75 | |||||||||||
| i magnitude | 14.60 (0.01) | 14.60 (0.01) | 14.59 | |||||||||||
| z magnitude | 14.47 (0.007) | 14.47 (0.007) | 14.47 | |||||||||||
| G magnitude | 13.31 (0.001) | 13.32 | 13.31 | 13.31 (0.003) | 13.32 | |||||||||
| BP magnitude | 13.15 (0.001) | 13.08 | 13.08 | |||||||||||
| RP magnitude | 13.63 (0.0008) | 13.63 | 13.63 | |||||||||||
| Pan g magnitude | 13.13 (0.004) | |||||||||||||
| Pan r magnitude | 13.60 (0.001) | |||||||||||||
| Pan i magnitude | 13.99 (0.01) | |||||||||||||
| Pan z magnitude | 14.26 (0.003) | |||||||||||||
| Pan y magnitude | 14.47 (0.005) | |||||||||||||
| E(B-V) | 0.003 | |||||||||||||
* 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.