USNO-A2.0 0900-07166327
All names: USNO-A2.0 0900-07166327, WD 1227+021, Gaia DR2 3700322648598265728, SDSS J123009.52+015425.2, SDSS J123009.52+015425.3, SDSS J123009.51+015425.2, Gaia DR3 3700322648598265728, Gaia EDR3 3700322648598265728, GALEX J123009.5+015425, 2QZ J123009.4+015425
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Tremblay et al. 2011 | 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 | 12 30 09.54 (0.1) | 12 30 09.52 | 12 30 09.54 (0.2) | 12 30 09.54 | 12 30 09.53 (0.1) | 12 30 09.52 | 12 30 09.46 | 12 30 09.52 | ||||||
| Declination | 01 54 25.21 (0.1) | 01 54 25.33 | 01 54 25.21 (0.1) | 01 54 25.21 | 01 54 25.34 (0.1) | 01 54 25.32 | 01 54 19.80 | 01 54 25.23 | ||||||
| Spectral type | DA | DA | DA | DA | DA_auto | DA | DA | DA | ||||||
| Effective temperature | [K] | 10133.0 | 10390.0 (70) | 9889.0 (272) | 10209.0 (45) | 10240.0 (54) | ||||||||
| log(g) | [cgs] | 8.07 | 8.22 (0.07) | 8.00 (0.06) | 8.28 (0.06) | 8.22 (0.07) | ||||||||
| Mass | [M☉] | 0.643 | 0.73 (0.04) | 0.601 (0.05) | 0.729 (0.04) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.6427 | 0.7762 | |||||||||||
| 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] | 5.67 (0.2) | 5.75 (0.2) | 5.67 | 5.67 (0.2) | |||||||||
| Distance | [pc] | 176.49 (5) | 174.06 (7) | 176.49 | 176.49 (5) | |||||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 14.95320161 (0.2) | 14.57953986 (0.5) | 14.953 (0.2) | 15.2 | |||||||||
| Proper motion (declination) | [mas/yr] | -8.418667645 (0.1) | -8.08841762 (0.4) | -8.419 (0.1) | -13.3 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 17.60 (0.3) | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 18.20 (0.3) | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | 18.40 (0.1) | |||||||||||||
| K magnitude | 18.20 (0.2) | |||||||||||||
| u magnitude | 18.85 (0.02) | 18.85 (0.02) | 18.87 (0.03) | 18.87 | 18.85 (0.03) | |||||||||
| g magnitude | 18.39 (0.007) | 18.39 (0.007) | 18.42 (0.02) | 18.42 | 18.41 (0.02) | |||||||||
| r magnitude | 18.50 (0.009) | 18.50 (0.009) | 18.52 (0.02) | 18.52 | 18.50 (0.02) | |||||||||
| i magnitude | 18.60 (0.01) | 18.60 (0.01) | 18.63 (0.02) | 18.63 | 18.62 (0.02) | |||||||||
| z magnitude | 18.73 (0.04) | 18.73 (0.04) | 18.74 (0.04) | 18.74 | 18.73 (0.04) | |||||||||
| G magnitude | 18.44 (0.02) | 18.46 | 18.44 | 18.44 (0.003) | ||||||||||
| BP magnitude | 18.54 (0.02) | 18.47 | ||||||||||||
| RP magnitude | 18.39 (0.02) | 18.35 | ||||||||||||
| Pan g magnitude | 18.44 (0.005) | |||||||||||||
| Pan r magnitude | 18.52 (0.008) | |||||||||||||
| Pan i magnitude | 18.65 (0.01) | |||||||||||||
| Pan z magnitude | 18.83 (0.02) | |||||||||||||
| Pan y magnitude | 18.97 (0.02) | |||||||||||||
| E(B-V) | 0.016 | |||||||||||||
* Constant surface field
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