WD 1209+440.1
All names: SDSS J121202.47+434509.7, Gaia DR3 1538365922883198336, J1212+4345, USNO-B1.0 1337-00229981, WD 1209+440.1, Gaia EDR3 1538365922883198336, LSPM J1212+4345, SDSS J121202.47+434509.8, WDJ121202.53+434509.55, Gaia DR2 1538365922883198336
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 12 02.22 (0.2) | 12 12 02.23 (0.2) | 12 12 02.22 | 12 12 02.53 (0.2) | 12 12 02.23 | 12 12 01.73 | |||||||
| Declination | 43 45 10.42 (0.1) | 43 45 10.39 (0.2) | 43 45 10.42 | 43 45 09.54 (0.1) | 43 45 10.39 | 43 45 07.20 | |||||||
| Spectral type | DA | DA | DA | DA | DA: | DA | DA9.2 | ||||||
| Effective temperature | [K] | 5401.0 (36) | 5426.0 (35) | 5405.0 (37) | 5319.0 | 5430.0 (97) | |||||||
| log(g) | [cgs] | 8.02 (0.03) | 8.09 (0.03) | 8.07 (0.03) | 8.02 | 8.04 (0.04) | |||||||
| Mass | [M☉] | 0.597 (0.02) | 0.638 (0.03) | 0.625 (0.03) | 0.595 | 0.611 (0.04) | |||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 4.4100 | 4.2560 | ||||||||||
| 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] | 13.88 (0.2) | 14.29 (0.3) | 14.29 (0.3) | 13.88 | 13.88 (0.2) | 14.29 (0.3) | ||||||
| Distance | [pc] | 72.05 (1) | 69.98 (2) | 70.00 (2) | 72.05 | 72.05 (1) | 70.00 (2) | ||||||
| Composition | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -209.8244998 (0.2) | -209.9607729 (0.3) | -209.824 (0.2) | -209.9607729 | ||||||||
| Proper motion (declination) | [mas/yr] | 54.92966242 (0.2) | 54.52690234 (0.3) | 54.93 (0.2) | 54.52690234 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 19.10 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | 18.90 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 17.69 (0.04) | 17.69 (0.04) | |||||||||||
| H magnitude | 17.45 (0.04) | 17.45 (0.04) | |||||||||||
| K magnitude | 17.28 (0.05) | 17.28 (0.05) | |||||||||||
| u magnitude | 20.58 (0.05) | 20.59 (0.05) | 20.59 (0.05) | 20.52 | |||||||||
| g magnitude | 19.34 (0.01) | 19.34 (0.01) | 19.36 | ||||||||||
| r magnitude | 18.80 (0.01) | 18.80 (0.01) | 18.81 | ||||||||||
| i magnitude | 18.54 (0.01) | 18.54 (0.01) | 18.56 | ||||||||||
| z magnitude | 18.47 (0.03) | 18.47 (0.03) | 18.52 | ||||||||||
| G magnitude | 18.81 (0.02) | 18.84 | 18.81 | 18.81 (0.004) | 18.84 | ||||||||
| BP magnitude | 19.23 (0.02) | 19.20 | 19.20 | ||||||||||
| RP magnitude | 18.27 (0.02) | 18.19 | 18.19 | ||||||||||
| Pan g magnitude | 19.30 (0.01) | 19.30 (0.01) | |||||||||||
| Pan r magnitude | 18.78 (0.01) | 18.78 (0.01) | |||||||||||
| Pan i magnitude | 18.59 (0.007) | 18.59 (0.009) | |||||||||||
| Pan z magnitude | 18.53 (0.01) | 18.53 (0.01) | |||||||||||
| Pan y magnitude | 18.49 (0.01) | 18.49 (0.01) | |||||||||||
| E(B-V) | 0.003 | ||||||||||||
* Constant surface field
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