EGGR 577
All names: SDSS J170530.45+480312.0, SDSS J170530.46+480312.0, UCAC4 691-056726, SBC9 2377, PM J17055+4803W, Sanduleak B, Gaia EDR3 1408135749896104192, ** SDK 1A, WD 1704+481.2, WDS J17055+4803A, 17055+4803W, Gaia DR3 1408135749896104192, J1705+4803, Gaia DR2 1408135749896104192, 1704+481B, 2MASS J17053043+4803125, EGGR 577, WDJ170530.44+480312.36, WD 1704+481B, TIC 274677206
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | Kilic et al. 2020 | McCleery et al. 2020 | Leggett et al. 2018 | MWDD H | 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 30.48 (0.01) | 17 05 30.48 (0.02) | 17 05 30.48 (0.02) | 17 05 30.48 | 17 05 30.44 (0.01) | 17 05 30.48 | 17 05 30.50 | |||||||||||
| Declination | 48 03 11.24 (0.01) | 48 03 11.28 (0.02) | 48 03 11.28 (0.02) | 48 03 11.24 | 48 03 12.36 (0.01) | 48 03 11.28 | 48 03 07.20 | |||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA5.4 | DA5 | |||||||
| Effective temperature | [K] | 8742.0 (27) | 8918.0 (66) | 9041.0 (21) | 8742.0 (26) | 8891.5 (46) | 8689.0 | 9230.0 (133) | 9370.0 (135) | 8931.0 (27) | ||||||||
| log(g) | [cgs] | 7.11 (0.005) | 7.24 (0.02) | 7.17 (0.004) | 7.12 (0.005) | 7.24 (0.01) | 7.11 | 7.67 (0.05) | 7.93 (0.06) | 7.17 (0.005) | ||||||||
| Mass | [M☉] | 0.233 (0.002) | 0.296 (0.005) | 0.249 (0.002) | 0.236 (0.002) | 0.233 | 0.43 (0.03) | 0.56 (0.03) | 0.248 (0.002) | |||||||||
| log(Luminosity) | [L☉] | -2.79 | ||||||||||||||||
| Cooling age | [Gyr] | 0.2900 | 0.3751 | |||||||||||||||
| 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] | 25.38 (0.01) | 25.38 (0.01) | 25.38 (0.03) | 25.38 (0.03) | 26.88 (0.8) | 25.38 (0.03) | 25.38 | 25.38 (0.01) | 25.38 (0.03) | ||||||||
| Distance | [pc] | 39.40 (0.02) | 39.40 (0.02) | 39.40 (0.05) | 39.41 (0.04) | 37.20 (1) | 39.41 (0.04) | 30.40 (0.8) | 26.00 | 39.40 | 39.40 (0.02) | 39.41 (0.04) | ||||||
| Composition | H | H | H | H | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 22.83569298 (0.02) | 22.79877882 (0.05) | 22.836 (0.02) | 22.79877882 | |||||||||||||
| Proper motion (declination) | [mas/yr] | -70.01259702 (0.02) | -70.05687995 (0.05) | -70.013 (0.02) | -70.05687995 | |||||||||||||
| Variability | ||||||||||||||||||
| Magnetic | ||||||||||||||||||
| Bd | [MG] | |||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||
| Binarity | yes | |||||||||||||||||
| B magnitude | 14.59 | |||||||||||||||||
| V magnitude | 14.45 | |||||||||||||||||
| R magnitude | 14.69 (0.1) | |||||||||||||||||
| I magnitude | ||||||||||||||||||
| J magnitude | 14.11 (0.003) | 14.11 (0.04) | ||||||||||||||||
| H magnitude | 14.07 (0.05) | 14.07 (0.05) | ||||||||||||||||
| K magnitude | 14.12 (0.07) | 14.12 (0.07) | ||||||||||||||||
| u magnitude | 14.76 (0.004) | 14.96 (0.004) | 14.96 (0.004) | 14.94 | ||||||||||||||
| g magnitude | 14.43 (0.004) | 14.43 (0.003) | 14.43 | |||||||||||||||
| r magnitude | 14.46 (0.004) | 14.46 (0.003) | 14.45 | |||||||||||||||
| i magnitude | 14.54 (0.004) | 14.55 (0.003) | 14.54 | |||||||||||||||
| z magnitude | 14.68 (0.005) | 14.69 (0.004) | 14.67 | |||||||||||||||
| G magnitude | 14.39 (0.0009) | 14.40 | 14.40 | 14.39 | 14.39 (0.003) | 14.40 | ||||||||||||
| BP magnitude | 14.48 (0.0009) | 14.47 | 14.47 | |||||||||||||||
| RP magnitude | 14.23 (0.001) | 14.24 | 14.24 | |||||||||||||||
| Pan g magnitude | 14.45 (0.003) | 14.45 (0.003) | ||||||||||||||||
| Pan r magnitude | 14.47 (0.001) | 14.47 (0.001) | ||||||||||||||||
| Pan i magnitude | 14.57 (0.002) | 14.57 (0.002) | ||||||||||||||||
| Pan z magnitude | 14.68 (0.003) | 14.68 (0.003) | ||||||||||||||||
| Pan y magnitude | 14.74 (0.003) | 14.74 (0.004) | ||||||||||||||||
| E(B-V) | 0.005 | |||||||||||||||||
* Constant surface field
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