WD 2239+005
All names: SDSS J224206.21+004822.6, Gaia DR2 2654423998066862464, LSPM J2242+0048, SDSS J224206.19+004822.7, WDJ224206.18+004822.94, Gaia DR3 2654423998066862464, USNO-B1.0 0908-00555550, Gaia EDR3 2654423998066862464, J2242+0048, WD 2239+005, SDSS J224206.19+004822.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Bergeron et al. 2022 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 42 06.33 (0.2) | 22 42 06.32 (0.2) | 22 42 06.33 | 22 42 06.18 (0.2) | 22 42 06.32 | 22 42 05.50 | ||||||||
| Declination | 00 48 21.71 (0.2) | 00 48 21.75 (0.2) | 00 48 21.71 | 00 48 22.93 (0.2) | 00 48 21.75 | 00 48 19.08 | ||||||||
| Spectral type | DC-IRfaint | DC | DC | DC | DC | DA: | DC | DC14.8 | ||||||
| Effective temperature | [K] | 3862.0 (38) | 3859.0 (35) | 3862.0 (39) | 4593.0 | 4293.0 | 4487.0 (101) | |||||||
| log(g) | [cgs] | 7.55 (0.02) | 7.56 (0.03) | 7.87 | 7.64 | 7.77 (0.06) | ||||||||
| Mass | [M☉] | 0.362 (0.009) | 0.368 (0.01) | 0.362 (0.009) | 0.501 | 0.372 | 0.447 (0.04) | |||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 9.9500 | 9.7200 | 5.9020 | 4.2330 | |||||||||
| log(H/He) | -0.67 | -0.71 | -0.67 | |||||||||||
| 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] | 18.94 (0.2) | 18.96 (0.2) | 18.96 (0.3) | 18.94 | 18.94 (0.2) | 18.96 (0.3) | |||||||
| Distance | [pc] | 52.81 (0.6) | 52.74 (0.7) | 52.74 (0.7) | 52.81 | 52.81 (0.6) | 52.74 (0.7) | |||||||
| Composition | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 142.1732511 (0.2) | 141.9916117 (0.4) | 142.173 (0.2) | 141.9916117 | |||||||||
| Proper motion (declination) | [mas/yr] | -76.27701203 (0.2) | -76.70711804 (0.4) | -76.277 (0.2) | -76.70711804 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 20.10 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 18.70 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 18.06 (0.04) | 18.06 (0.04) | ||||||||||||
| H magnitude | 18.72 (0.07) | 18.72 (0.07) | ||||||||||||
| K magnitude | 19.16 (0.1) | 19.16 (0.1) | ||||||||||||
| u magnitude | 21.76 (0.2) | 22.15 (0.2) | 21.54 (0.1) | 21.81 | ||||||||||
| g magnitude | 19.60 (0.01) | 19.61 (0.02) | 19.38 | |||||||||||
| r magnitude | 18.63 (0.009) | 18.64 (0.01) | 18.47 | |||||||||||
| i magnitude | 18.27 (0.009) | 18.26 (0.01) | 18.13 | |||||||||||
| z magnitude | 18.13 (0.02) | 18.18 (0.03) | 18.05 | |||||||||||
| G magnitude | 18.69 (0.03) | 18.72 | 18.69 | 18.69 (0.004) | 18.72 | |||||||||
| BP magnitude | 19.29 (0.03) | 19.27 | 19.27 | |||||||||||
| RP magnitude | 17.97 (0.02) | 17.96 | 17.96 | |||||||||||
| Pan g magnitude | 19.47 (0.01) | 19.47 (0.01) | ||||||||||||
| Pan r magnitude | 18.65 (0.005) | 18.65 (0.006) | ||||||||||||
| Pan i magnitude | 18.30 (0.003) | 18.30 (0.003) | ||||||||||||
| Pan z magnitude | 18.19 (0.009) | 18.19 (0.008) | ||||||||||||
| Pan y magnitude | 18.26 (0.01) | 18.26 (0.02) | ||||||||||||
| E(B-V) | 0.001 | |||||||||||||
* Constant surface field
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