All names: GALEX J170530.8+480310, UCAC4 691-056727, WDS J17055+4803B, EGGR 576, 1704+481A, PM J17055+4803E, 17055+4803E, 1SWASP J170530.69+480311.4, SDSS J170530.98+480309.9, ** SDK 1B, TIC 274677205, Sanduleak A, WD 1704+481A, HIDDEN NAME WD 1704+481A, ** SLN 83B, Gaia DR2 1408135749896103936, J1705+4803, Gaia DR3 1408135749896103936, WDJ170530.97+480310.27, WD 1704+481.1, Gaia EDR3 1408135749896103936, 2MASS J17053095+4803104, WDS J17054+4803B
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Kilic et al. 2020 | McCleery et al. 2020 | Leggett et al. 2018 | Gaia DR2 | Stilism | Limoges et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 17 05 31.00 (0.02) | 17 05 30.99 (0.02) | 17 05 30.99 (0.02) | 17 05 31.00 | 17 05 30.97 (0.02) | 17 05 30.99 | 17 05 30.50 | |||||||||
| Declination | 48 03 09.14 (0.02) | 48 03 09.18 (0.03) | 48 03 09.18 (0.03) | 48 03 09.14 | 48 03 10.27 (0.02) | 48 03 09.18 | 48 03 07.20 | |||||||||
| Spectral type | DA | DA | DA | DA | DA3.7 | DA | DA | DA | DA3.6 | DA4 | ||||||
| Effective temperature | [K] | 13544.0 (98) | 14224.0 (201) | 13545.0 (98) | 14135.2 (116) | 13452.0 (804) | 14120.0 (292) | 14170.0 (294) | 14381.0 (98) | |||||||
| log(g) | [cgs] | 8.04 (0.005) | 8.08 (0.02) | 8.04 (0.005) | 8.08 (0.01) | 8.09 (0.04) | 8.09 (0.05) | 8.08 (0.05) | 8.10 (0.006) | |||||||
| Mass | [M☉] | 0.633 (0.004) | 0.659 (0.01) | 0.633 (0.005) | 0.66 (0.04) | 0.66 (0.03) | 0.66 (0.03) | 0.671 (0.005) | ||||||||
| log(Luminosity) | [L☉] | -2.28 | ||||||||||||||
| Cooling age | [Gyr] | 0.3090 (0.06) | ||||||||||||||
| 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] | 25.35 (0.02) | 25.35 (0.02) | 25.34 (0.03) | 26.21 (0.5) | 25.34 (0.03) | 25.35 | 25.35 (0.02) | 25.34 (0.03) | |||||||
| Distance | [pc] | 39.45 (0.03) | 39.45 (0.03) | 39.46 (0.04) | 38.15 (0.8) | 39.46 (0.04) | 39.50 (1) | 40.00 | 39.45 | 39.45 (0.03) | 39.46 (0.04) | |||||
| Composition | H | H | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 15.09006496 (0.02) | 15.02552194 (0.05) | 15.09 (0.02) | 15.02552194 | |||||||||||
| Proper motion (declination) | [mas/yr] | -70.50702091 (0.02) | -70.57269665 (0.06) | -70.507 (0.02) | -70.57269665 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | yes | |||||||||||||||
| B magnitude | 13.87 (0.09) | |||||||||||||||
| V magnitude | 13.80 (0.01) | |||||||||||||||
| R magnitude | ||||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 14.73 (0.04) | |||||||||||||||
| H magnitude | 14.80 (0.07) | |||||||||||||||
| K magnitude | 15.17 (0.2) | |||||||||||||||
| u magnitude | 14.77 (0.004) | 14.76 (0.004) | 14.76 | |||||||||||||
| g magnitude | 14.40 (0.004) | 14.38 (0.003) | 14.40 | |||||||||||||
| r magnitude | 14.66 (0.004) | 14.64 (0.003) | 14.66 | |||||||||||||
| i magnitude | 14.90 (0.004) | 14.88 (0.003) | 14.91 | |||||||||||||
| z magnitude | 15.15 (0.005) | 15.14 (0.005) | 15.16 | |||||||||||||
| G magnitude | 14.53 (0.001) | 14.54 | 14.54 | 14.53 | 14.53 (0.003) | 14.54 | ||||||||||
| BP magnitude | 14.50 (0.001) | 14.49 | 14.49 | |||||||||||||
| RP magnitude | 14.61 (0.001) | 14.61 | 14.61 | |||||||||||||
| Pan g magnitude | 14.43 (0.004) | |||||||||||||||
| Pan r magnitude | 14.68 (0.003) | |||||||||||||||
| Pan i magnitude | 14.93 (0.002) | |||||||||||||||
| Pan z magnitude | 15.15 (0.002) | |||||||||||||||
| Pan y magnitude | 15.27 (0.006) | |||||||||||||||
| E(B-V) | 0.005 | |||||||||||||||
* 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.