EGGR 904
All names: Gaia EDR3 611401999180118528, LB 8915, EGGR 904, WIRED J085618.94+161103.6, UCAC4 531-047787, GALEX J085619.0+161103, Gaia DR2 611401999180118528, Gaia DR3 611401999180118528, EPIC 211719918, WDJ085618.95+161103.75, TIC 437042755, SDSS J085618.94+161103.60, LAMOST J085618.94+161103.6, WISE J085618.89+161103.6, WD 0853+163, PG 0853+164, SDSS J085618.94+161103.6, LAMOST J085618.94+161103.7, 2MASS J08561896+1611038, SDSS J085618.93+161103.5
Note: In the PG catalogue, LB 8827 is cross-identified to both PG 0850+192 and PG 0853+164. The latest is erroneous as PG 0853+164 is LB 8915. This misidentifcation has spread in the literature.
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Hardy et al. 2023b | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | MWDD HE | Gaia DR2 | Stilism | Ferrario et al. 2015 | Voss et al. 2007 | Beauchamp et al. 1999 | 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 | 08 56 18.91 (0.04) | 08 56 18.94 | 08 56 18.91 (0.06) | 08 56 18.91 | 08 56 18.95 (0.04) | 08 56 18.91 | 08 56 18.84 | 08 56 18.94 | ||||||||||||
| Declination | 16 11 03.25 (0.02) | 16 11 03.58 | 16 11 03.27 (0.03) | 16 11 03.25 | 16 11 03.74 (0.02) | 16 11 03.27 | 16 11 03.12 | 16 11 03.64 | ||||||||||||
| Spectral type | DBAH | DBH | DBA | DBA | DBA | DB | DB2 | DBH | DB3 | DBH | DB | |||||||||
| Effective temperature | [K] | 16984.0 (497) | 17781.4 (219) | 18981.0 | 18648.0 | 16706.0 | 24450.0 (3250) | 26128.0 | 26600.0 | 17783.0 (328) | 34521.0 (95) | |||||||||
| log(g) | [cgs] | 8.22 (0.03) | 8.29 (0.03) | 8.74 | 8.34 | 8.20 | 8.00 (0) | 8.40 | 8.29 | 8.29 (0.02) | 8.44 (0.02) | |||||||||
| Mass | [M☉] | 0.726 (0.03) | 0.775418392 (0.03) | 1.06 | 0.805 | 0.711 | 0.853 | 0.77 (0.02) | ||||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||||||
| Cooling age | [Gyr] | 0.2027 | ||||||||||||||||||
| log(H/He) | -5.5 | -5.002 | -3 | |||||||||||||||||
| log(C/He) | ||||||||||||||||||||
| 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] | 13.87 (0.05) | 13.74 (0.08) | 13.87 | 13.87 (0.05) | 13.74 (0.08) | ||||||||||||||
| Distance | [pc] | 72.12 (0.2) | 72.78 (0.4) | 72.12 | 72.12 (0.2) | 72.78 (0.4) | ||||||||||||||
| Composition | He | He | ||||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -32.25507814 (0.04) | -32.37475381 (0.1) | -32.255 (0.04) | -32.375 | |||||||||||||||
| Proper motion (declination) | [mas/yr] | -30.72123268 (0.03) | -30.7700774 (0.07) | -30.721 (0.03) | -30.77 | |||||||||||||||
| Variability | ||||||||||||||||||||
| Magnetic | yes | yes | ||||||||||||||||||
| Bd | [MG] | 1.5 (0) | 0.875 (0.5) | |||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||||
| Binarity | ||||||||||||||||||||
| B magnitude | 15.54 (0.06) | |||||||||||||||||||
| V magnitude | 15.60 (0.04) | |||||||||||||||||||
| R magnitude | 15.88 (0.2) | |||||||||||||||||||
| I magnitude | ||||||||||||||||||||
| J magnitude | 15.92 (0.07) | |||||||||||||||||||
| H magnitude | 16.39 (0.3) | |||||||||||||||||||
| K magnitude | 15.44 (0.2) | |||||||||||||||||||
| u magnitude | 15.31 (0.004) | 15.31 (0.004) | 15.31 (0.004) | 15.32 (0.01) | ||||||||||||||||
| g magnitude | 15.45 (0.003) | 15.46 (0.003) | 15.45 (0.003) | 15.45 (0.01) | ||||||||||||||||
| r magnitude | 15.78 (0.004) | 15.78 (0.004) | 15.78 (0.004) | 15.81 (0.02) | ||||||||||||||||
| i magnitude | 16.05 (0.004) | 16.06 (0.004) | 16.05 (0.004) | 16.04 (0.01) | ||||||||||||||||
| z magnitude | 16.31 (0.008) | 16.32 (0.008) | 16.31 (0.008) | 16.34 (0.02) | ||||||||||||||||
| G magnitude | 15.60 (0.002) | 15.62 | 15.60 | 15.60 (0.003) | 15.62 | |||||||||||||||
| BP magnitude | 15.53 (0.002) | 15.47 | 15.47 | |||||||||||||||||
| RP magnitude | 15.73 (0.003) | 15.73 | 15.73 | |||||||||||||||||
| Pan g magnitude | 15.50 (0.007) | |||||||||||||||||||
| Pan r magnitude | 15.80 (0.002) | |||||||||||||||||||
| Pan i magnitude | 16.04 (0.003) | |||||||||||||||||||
| Pan z magnitude | 16.31 (0.007) | |||||||||||||||||||
| Pan y magnitude | 16.48 (0.01) | |||||||||||||||||||
| E(B-V) | 0.003 | |||||||||||||||||||
* Constant surface field
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