All names: LHS 2596, LSPM J1239+4525, SDSS J123914.50+452512.4, 1236+457, 2MASS J12391479+4525150, WDJ123914.70+452514.14, PM J12392+4525, NLTT 31426, LP 171-40, WD 1236+457, Gaia EDR3 1541286711100812160, TIC 115907976, USNO-B1.0 1354-00236787, PSO J189.8076+45.4185, SDSS J123914.49+452512.4, GSC2U J123915.4+452520, Gaia DR2 1541286711100812160, Gaia DR3 1541286711100812160, J1239+4525, 12392+4525
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Kilic et al. 2020 | Blouin et al. 2019 | Leggett et al. 2018 | MWDD H | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 39 13.72 (0.02) | 12 39 14.50 | 12 39 13.75 (0.03) | 12 39 13.75 (0.03) | 12 39 13.72 | 12 39 14.70 (0.02) | 12 39 13.75 | 12 39 17.47 | 12 39 14.50 | ||||||||||||
| Declination | 45 25 05.55 (0.03) | 45 25 12.43 | 45 25 05.82 (0.03) | 45 25 05.82 (0.03) | 45 25 05.55 | 45 25 14.14 (0.03) | 45 25 05.82 | 45 25 43.68 | 45 25 12.45 | ||||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA7.9 | DA | DA | DA | DA | DA | DC8 | DA | DA | ||||||
| Effective temperature | [K] | 6415.0 (12) | 6407.0 (42) | 6427.0 (15) | 6347.5 (39) | 6415.0 (12) | 6355.0 (40) | 6402.0 (145) | 6347.0 | 6810.0 (118) | 6504.0 (20) | 6344.0 (23) | |||||||||
| log(g) | [cgs] | 8.32 (0.004) | 8.32 (0.02) | 8.32 (0.005) | 8.30 (0.02) | 8.32 (0.004) | 8.30 (0.01) | 8.29 (0.04) | 8.29 | 8.66 (0.1) | 8.35 (0.006) | 8.12 (0.05) | |||||||||
| Mass | [M☉] | 0.794 (0.004) | 0.792 (0.01) | 0.797 (0.004) | 0.792 (0.004) | 0.784 (0.009) | 0.775 (0.03) | 0.777 | 1.02 (0.09) | 0.812 (0.005) | 0.66 (0.03) | ||||||||||
| log(Luminosity) | [L☉] | -3.93 | |||||||||||||||||||
| Cooling age | [Gyr] | 3.9600 | 3.7500 (0.1) | 3.5950 (0.3) | 3.7050 | ||||||||||||||||
| 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] | 37.25 (0.05) | 37.25 (0.05) | 37.21 (0.07) | 37.21 (0.07) | 37.21 (0.07) | 36.56 (0.6) | 37.21 (0.07) | 37.25 | 37.25 (0.05) | 37.21 (0.07) | ||||||||||
| Distance | [pc] | 26.84 (0.04) | 26.85 (0.04) | 26.87 (0.05) | 26.88 (0.05) | 26.88 (0.05) | 27.35 (0.5) | 26.88 (0.05) | 23.50 (0.9) | 26.84 | 26.84 (0.04) | 26.88 (0.05) | |||||||||
| Composition | H | H | H | H | H | H | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -646.7323051 (0.03) | -646.7768353 (0.06) | -646.732 (0.03) | -646.777 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | -537.1532003 (0.04) | -537.0662068 (0.08) | -537.153 (0.04) | -537.066 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | |||||||||||||||||||||
| B magnitude | 16.80 | ||||||||||||||||||||
| V magnitude | |||||||||||||||||||||
| R magnitude | 16.30 | ||||||||||||||||||||
| I magnitude | |||||||||||||||||||||
| J magnitude | 15.57 (0.009) | 15.60 (0.06) | 15.60 (0.06) | ||||||||||||||||||
| H magnitude | 15.20 (0.1) | 15.20 (0.1) | 15.20 (0.1) | ||||||||||||||||||
| K magnitude | |||||||||||||||||||||
| u magnitude | 17.36 (0.009) | 17.36 (0.009) | 17.36 (0.009) | 17.36 (0.009) | 17.35 | 17.36 (0.01) | |||||||||||||||
| g magnitude | 16.66 (0.004) | 16.63 (0.002) | 16.66 (0.004) | 16.65 | 16.67 (0.02) | ||||||||||||||||
| r magnitude | 16.38 (0.005) | 16.37 (0.003) | 16.38 (0.005) | 16.37 | 16.38 (0.01) | ||||||||||||||||
| i magnitude | 16.29 (0.005) | 16.30 (0.003) | 16.29 (0.005) | 16.28 | 16.30 (0.01) | ||||||||||||||||
| z magnitude | 16.31 (0.007) | 16.31 (0.002) | 16.31 (0.007) | 16.29 | 16.31 (0.01) | ||||||||||||||||
| G magnitude | 16.37 (0.002) | 16.38 | 16.38 | 16.37 | 16.37 (0.003) | 16.38 | |||||||||||||||
| BP magnitude | 16.61 (0.002) | 16.60 | 16.60 | ||||||||||||||||||
| RP magnitude | 15.96 (0.003) | 15.95 | 15.95 | ||||||||||||||||||
| Pan g magnitude | 16.64 (0.003) | 16.64 (0.003) | 16.63 (0.002) | ||||||||||||||||||
| Pan r magnitude | 16.38 (0.005) | 16.38 (0.005) | 16.37 (0.003) | ||||||||||||||||||
| Pan i magnitude | 16.30 (0.003) | 16.30 (0.003) | 16.30 (0.003) | ||||||||||||||||||
| Pan z magnitude | 16.29 (0.009) | 16.29 (0.009) | 16.31 (0.002) | ||||||||||||||||||
| Pan y magnitude | 16.32 (0.008) | 16.32 (0.008) | 16.31 (0.004) | ||||||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||||||
* 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.