USNO-A2.0 0900-19847081
All names: WD 2147+006, Gaia EDR3 2681319804829020544, Gaia DR3 2681319804829020544, GALEX J215005.2+005553, SDSS J215005.28+005552.6, SDSS J215005.31+005552.9, SDSS J215005.31+005552.8, USNO-A2.0 0900-19847081, SDSS J215005.30+005552.6, SDSS J215005.30+005552.9, Gaia DR2 2681319804829020544
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD HE | Gaia DR2 | Stilism | Koester & Kepler 2015 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 50 05.28 (0.2) | 21 50 05.30 | 21 50 05.28 (0.3) | 21 50 05.28 | 21 50 05.32 (0.2) | 21 50 05.31 | 21 50 05.26 | 21 50 05.31 | ||||||
| Declination | 00 55 52.40 (0.2) | 00 55 52.66 | 00 55 52.41 (0.2) | 00 55 52.40 | 00 55 52.94 (0.2) | 00 55 52.90 | 00 55 50.52 | 00 55 52.87 | ||||||
| Spectral type | DBAM: | DB | DBA+M | DBA | DBA | DBAM: | DB | |||||||
| Effective temperature | [K] | 11324.0 | 14338.0 (120) | 12723.0 (873) | 15018.0 (268) | 13950.0 (270) | ||||||||
| log(g) | [cgs] | 7.90 | 8.00 (0) | 8.05 (0.1) | 8.61 (0.2) | 8.27 (0.2) | ||||||||
| Mass | [M☉] | 0.526 | 0.618 (0.1) | |||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.3911 | ||||||||||||
| log(H/He) | -4.01 (0.3) | |||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | <-7.69 | |||||||||||||
| 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] | 3.79 (0.2) | 3.85 (0.3) | 3.79 | 3.79 (0.2) | |||||||||
| Distance | [pc] | 263.65 (17) | 259.90 (22) | 293.00 | 263.65 | 263.64 (17) | ||||||||
| Composition | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -36.79078598 (0.3) | -37.55967957 (0.6) | -36.791 (0.2) | -44.7 | |||||||||
| Proper motion (declination) | [mas/yr] | -33.8608855 (0.2) | -33.92058407 (0.5) | -33.861 (0.2) | -35.7 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 17.80 (0.3) | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 18.50 (0.3) | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 18.81 (0.02) | 18.81 (0.02) | 18.82 (0.03) | 18.82 | 18.82 (0.03) | |||||||||
| g magnitude | 18.80 (0.009) | 18.80 (0.009) | 18.79 (0.02) | 18.79 | 18.80 (0.02) | |||||||||
| r magnitude | 19.00 (0.01) | 19.00 (0.01) | 18.97 (0.02) | 18.97 | 18.97 (0.02) | |||||||||
| i magnitude | 19.16 (0.01) | 19.16 (0.01) | 19.18 (0.02) | 19.18 | 19.18 (0.02) | |||||||||
| z magnitude | 19.37 (0.05) | 19.37 (0.05) | 19.29 (0.06) | 19.28 | 19.26 (0.06) | |||||||||
| G magnitude | 18.87 (0.02) | 18.91 | 18.87 | 18.87 (0.004) | ||||||||||
| BP magnitude | 18.87 (0.02) | 18.82 | ||||||||||||
| RP magnitude | 18.93 (0.04) | 18.97 | ||||||||||||
| Pan g magnitude | 18.83 (0.007) | |||||||||||||
| Pan r magnitude | 18.99 (0.008) | |||||||||||||
| Pan i magnitude | 19.19 (0.008) | |||||||||||||
| Pan z magnitude | 19.34 (0.01) | |||||||||||||
| Pan y magnitude | 19.47 (0.03) | |||||||||||||
| E(B-V) | 0.069 | |||||||||||||
* Constant surface field
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