All names: SDSS J014519.62+231753.1, G 34-49, WDS J01452+2317B, LTT 10614, UBV 1776, G 72-33, J0145+2317, UCAC4 567-003393, NLTT 5829, SDSS J014519.69+231752.69, SDSS J014519.69+231752.6, IDS 01397+2247 B, SDSS J014519.62+231753.0, Gaia DR3 290678477446232960, G 94-7, WD 0142+23, TIC 456907324, GALEX J014519.5+231752, CCDM J01453+2318B, G 35-11, SDSS J014519.69+231752.7, SDSS J014519.53+231753.4, USNO-B1.0 1132-00029407, EGGR 12, WD 0142+230, ** GIC 25B, GEN# +9.80035011, Gaia DR2 290678477446232960, 2MASS J01451946+2317538, G 39-49, Gaia EDR3 290678477446232960, CSI+23-01425 1, WDJ014519.42+231753.94, LSPM J0145+2317E
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Coutu et al. 2019 | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 45 19.78 (0.08) | 01 45 19.62 | 01 45 19.62 | 01 45 19.50 | 01 45 19.77 (0.1) | 01 45 19.78 | 01 45 19.42 (0.08) | 01 45 19.77 | 01 45 18.29 | |||||||
| Declination | 23 17 52.22 (0.06) | 23 17 53.08 | 23 17 53.08 | 23 17 53.71 | 23 17 52.28 (0.09) | 23 17 52.22 | 23 17 53.95 (0.06) | 23 17 52.28 | 23 17 54.96 | |||||||
| Spectral type | DQ | DQ | DQ | DQ | DQ | DC4 | DC4 | DQ | ||||||||
| Effective temperature | [K] | 7468.0 (38) | 7627.0 (29) | 7731.0 (188) | 7500.0 (12) | 7608.0 (88) | ||||||||||
| log(g) | [cgs] | 7.92 (0.01) | 7.99 (0.01) | 8.02 | 8.00 (0) | 7.98 (0.02) | ||||||||||
| Mass | [M☉] | 0.53 (0.009) | 0.568 (0.009) | 0.5849 | 0.564 (0.02) | |||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||
| Cooling age | [Gyr] | 1.2900 | 1.2400 | |||||||||||||
| log(H/He) | ||||||||||||||||
| log(C/He) | -5.74 | -5.65 | -5.546 (0.02) | -5.778 (0.02) | ||||||||||||
| log(Ca/He) | ||||||||||||||||
| log(Ca/H) | ||||||||||||||||
| log(N/He) | ||||||||||||||||
| log(O/He) | ||||||||||||||||
| log(Na/He) | ||||||||||||||||
| log(Mg/He) | ||||||||||||||||
| log(Al/He) | ||||||||||||||||
| log(Si/He) | ||||||||||||||||
| log(P/He) | ||||||||||||||||
| log(S/He) | ||||||||||||||||
| log(Cl/He) | ||||||||||||||||
| log(Sc/He) | ||||||||||||||||
| log(Ti/He) | ||||||||||||||||
| log(V/He) | ||||||||||||||||
| log(Cr/He) | ||||||||||||||||
| log(Mn/He) | ||||||||||||||||
| log(Fe/He) | ||||||||||||||||
| log(Co/He) | ||||||||||||||||
| log(Ni/He) | ||||||||||||||||
| log(Cu/He) | ||||||||||||||||
| log(Zn/He) | ||||||||||||||||
| log(Ga/He) | ||||||||||||||||
| log(Ge/He) | ||||||||||||||||
| log(Sr/He) | ||||||||||||||||
| Parallax | [mas] | 16.34 (0.09) | 16.41 (0.1) | 16.41 | 16.41 (0.1) | 16.34 | 16.34 (0.09) | 16.41 (0.1) | ||||||||
| Distance | [pc] | 61.19 (0.3) | 60.94 (0.4) | 60.95 (0.4) | 60.95 (0.4) | 61.19 | 61.19 (0.3) | 60.95 (0.4) | ||||||||
| Composition | He | He | He | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 308.0615388 (0.1) | 308.169741 (0.2) | 308.062 (0.1) | 308.169741 | |||||||||||
| Proper motion (declination) | [mas/yr] | -107.6950604 (0.08) | -107.589919 (0.2) | -107.695 (0.08) | -107.589919 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | yes | |||||||||||||||
| B magnitude | 17.30 | |||||||||||||||
| V magnitude | ||||||||||||||||
| R magnitude | 16.60 | |||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 16.85 (0.02) | 16.85 (0.1) | ||||||||||||||
| H magnitude | ||||||||||||||||
| K magnitude | ||||||||||||||||
| u magnitude | 17.49 (0.01) | 17.49 (0.01) | 17.50 (0.009) | 17.46 (0.03) | 17.49 (0.01) | 17.49 (0.01) | ||||||||||
| g magnitude | 17.23 (0.004) | 17.21 (0.004) | 17.25 (0.02) | 17.23 (0.004) | 17.23 (0.004) | |||||||||||
| r magnitude | 17.17 (0.005) | 17.16 (0.005) | 17.20 (0.01) | 17.17 (0.005) | 17.17 (0.005) | |||||||||||
| i magnitude | 17.20 (0.006) | 17.20 (0.006) | 17.20 (0.02) | 17.20 (0.006) | 17.20 (0.006) | |||||||||||
| z magnitude | 17.31 (0.01) | 17.31 (0.01) | 17.34 (0.02) | 17.31 (0.01) | 17.31 (0.01) | |||||||||||
| G magnitude | 17.11 (0.008) | 17.14 | 17.11 | 17.11 (0.003) | 17.14 | |||||||||||
| BP magnitude | 17.24 (0.008) | 17.24 | 17.24 | |||||||||||||
| RP magnitude | 16.92 (0.01) | 16.90 | 16.90 | |||||||||||||
| Pan g magnitude | 17.21 (0.005) | 17.24 (0.003) | ||||||||||||||
| Pan r magnitude | 17.16 (0.006) | 17.17 (0.006) | ||||||||||||||
| Pan i magnitude | 17.23 (0.005) | 17.23 (0.003) | ||||||||||||||
| Pan z magnitude | 17.33 (0.004) | 17.33 (0.006) | ||||||||||||||
| Pan y magnitude | 17.36 (0.01) | 17.40 (0.02) | ||||||||||||||
| 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.