SDSS J091809.57+175216.2
All names: [HHD2009] SDSS J0918+1752, Gaia DR3 632169192552095360, GALEX J091809.6+175216, Gaia EDR3 632169192552095360, SDSS J091809.60+175216.3, SDSS J091809.58+175216.2, SDSS J091809.57+175216.2, [SGR2010] J0918+1752, WD 0915+180, Gaia DR2 632169192552095360
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 18 09.59 (0.1) | 09 18 09.58 | 09 18 09.59 (0.2) | 09 18 09.57 | 09 18 09.59 | 09 18 09.58 (0.1) | 09 18 08.90 | 09 18 09.58 | |||||
| Declination | 17 52 16.01 (0.1) | 17 52 16.21 | 17 52 16.02 (0.2) | 17 52 16.21 | 17 52 16.01 | 17 52 16.28 (0.1) | 17 52 09.48 | 17 52 16.23 | |||||
| Spectral type | DA+M | DA+M | DA | DA+M | DA d | DA+M | DA+MS | ||||||
| Effective temperature | [K] | 9053.0 | 12250.0 (423) | 7599.0 (160) | 11170.0 (94) | ||||||||
| log(g) | [cgs] | 7.20 | 7.52 (0.2) | 6.79 (0.09) | 7.83 (0.07) | ||||||||
| Mass | [M☉] | 0.256 | 0.37 (0.07) | 0.157 (0.03) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.3639 | |||||||||||
| 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] | 4.08 (0.2) | 3.72 (0.3) | 4.08 | 4.08 (0.2) | ||||||||
| Distance | [pc] | 245.02 (11) | 268.75 (22) | 446.00 (20) | 245.02 | 245.01 (11) | |||||||
| Composition | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 15.13119589 (0.2) | 14.45034863 (0.4) | 15.131 (0.2) | |||||||||
| Proper motion (declination) | [mas/yr] | -16.92650921 (0.2) | -16.95643611 (0.3) | -16.927 (0.2) | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | WDMS | WDMS | ||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 18.97 (0.02) | 19.03 | 18.97 (0.02) | 19.03 | 18.99 (0.02) | ||||||||
| g magnitude | 18.50 (0.007) | 18.54 | 18.50 (0.007) | 18.54 | 18.51 (0.02) | ||||||||
| r magnitude | 18.67 (0.009) | 18.69 | 18.67 (0.009) | 18.69 | 18.67 (0.02) | ||||||||
| i magnitude | 18.65 (0.01) | 18.68 | 18.66 (0.01) | 18.68 | 18.67 (0.01) | ||||||||
| z magnitude | 18.36 (0.02) | 18.37 | 18.36 (0.02) | 18.37 | 18.38 (0.03) | ||||||||
| G magnitude | 18.52 (0.02) | 18.55 | 18.52 | 18.52 (0.003) | |||||||||
| BP magnitude | 18.62 (0.02) | 18.64 | |||||||||||
| RP magnitude | 18.23 (0.02) | 18.25 | |||||||||||
| Pan g magnitude | 18.53 (0.004) | ||||||||||||
| Pan r magnitude | 18.70 (0.004) | ||||||||||||
| Pan i magnitude | 18.67 (0.009) | ||||||||||||
| Pan z magnitude | 18.48 (0.009) | ||||||||||||
| Pan y magnitude | 18.26 (0.02) | ||||||||||||
| E(B-V) | 0.020 | ||||||||||||
* Constant surface field
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