All names: CBS 340, USNO-B1.0 1214-00207333, LAMOST J130439.57+312904.8, WD 1302+317, Gaia EDR3 1466310360366357760, SDSS J130439.57+312904.8, LB 28, KUV13023+3145, [BCF91] 549, WDJ130439.57+312904.92, US 222, OMHR 101653, OMHR J130439.57+312905.6, KUV 494-2, PB 3282, GALEX J130439.6+312905, Gaia DR3 1466310360366357760, Gaia DR2 1466310360366357760, KUV 13023+3145
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2026a | Geier 2020 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 04 39.58 (0.06) | 13 04 39.57 | 13 04 39.57 | 13 04 39.58 (0.08) | 13 04 39.57 (0.06) | 13 04 40.51 | ||||
| Declination | 31 29 04.77 (0.03) | 31 29 04.84 | 31 29 05.21 | 31 29 04.78 (0.05) | 31 29 04.91 (0.03) | 31 28 56.28 | ||||
| Spectral type | sd | sdOB | sdO | DB | ||||||
| Effective temperature | [K] | 37567.0 | 38100.0 (600) | |||||||
| log(g) | [cgs] | 5.70 | 5.69 (0.1) | |||||||
| Mass | [M☉] | 0.187 | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | 1.0 | |||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(Li/H) | ||||||||||
| log(Be/H) | ||||||||||
| log(B/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(Cl/H) | ||||||||||
| log(K/H) | ||||||||||
| log(Sc/H) | ||||||||||
| log(Ti/H) | ||||||||||
| log(V/H) | ||||||||||
| log(Cr/H) | ||||||||||
| log(Mn/H) | ||||||||||
| log(Fe/H) | ||||||||||
| log(Co/H) | ||||||||||
| log(Ni/H) | ||||||||||
| log(Cu/H) | ||||||||||
| log(Sr/H) | ||||||||||
| Parallax | [mas] | 0.29 (0.08) | 0.53 (0.1) | 0.53 (0.1) | 0.29 (0.08) | |||||
| Distance | [pc] | 3428.90 (927) | 1880.41 (374) | 1880.48 (375) | 3429.36 (927) | |||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 2.667647595 (0.07) | 2.647 (0.1) | 2.647003522 (0.1) | 2.668 (0.07) | |||||
| Proper motion (declination) | [mas/yr] | -8.850490062 (0.04) | -9.227 (0.1) | -9.22746528 (0.1) | -8.85 (0.04) | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 16.60 | |||||||||
| V magnitude | ||||||||||
| R magnitude | 17.00 | |||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 16.34 (0.006) | 16.35 (0.006) | 16.35 (0.006) | |||||||
| g magnitude | 16.73 (0.004) | 16.72 (0.004) | 16.72 (0.004) | |||||||
| r magnitude | 17.28 (0.005) | 17.27 (0.005) | 17.27 (0.005) | |||||||
| i magnitude | 17.60 (0.007) | 17.60 (0.007) | 17.60 (0.007) | |||||||
| z magnitude | 17.97 (0.02) | 17.96 (0.02) | 17.96 (0.02) | |||||||
| G magnitude | 17.00 (0.004) | 17.03 (0.001) | 17.03 | 17.00 (0.003) | ||||||
| BP magnitude | 16.84 (0.004) | 16.77 (0.009) | 16.77 | |||||||
| RP magnitude | 17.33 (0.008) | 17.32 (0.006) | 17.32 | |||||||
| Pan g magnitude | 16.82 (0.006) | 16.82 (0.006) | ||||||||
| Pan r magnitude | 17.28 (0.004) | 17.28 (0.004) | ||||||||
| Pan i magnitude | 17.66 (0.005) | 17.66 (0.005) | ||||||||
| Pan z magnitude | 17.94 (0.005) | 17.94 (0.005) | ||||||||
| Pan y magnitude | 18.13 (0.02) | 18.13 (0.02) | ||||||||
| E(B-V) | 0.013 | |||||||||
* 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.