GD 311
All names: NLTT 27901, TIC 298000205, LSPM J1135+5724, WD 1132+574, SDSS J113534.62+572451.7, SDSS J113534.61+572451.7, GD 311, 2MASS J11353464+5724521, PSO J173.8930+57.4139, Gaia EDR3 845973046799769984, J1135+5724, WDJ113534.67+572451.92, WD 1132+576, Gaia DR3 845973046799769984, WIRED J113534.61+572451.7, Gaia DR2 845973046799769984, LP 94-285, USNO-B1.0 1474-00262791, LB 2052
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kawka et Vennes 2006 | Koester et al. 2006 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 35 34.30 (0.03) | 11 35 34.62 | 11 35 34.31 (0.03) | 11 35 34.30 | 11 35 34.67 (0.03) | 11 35 34.31 | 11 35 34.56 | 11 35 34.62 | |||||||||||
| Declination | 57 24 50.11 (0.03) | 57 24 51.75 | 57 24 50.16 (0.03) | 57 24 50.11 | 57 24 51.92 (0.03) | 57 24 50.16 | 57 24 48.24 | 57 24 51.70 | |||||||||||
| Spectral type | DQ | DQ | DQ | DC | DC | DC | DQ | DQ | DQ | DQ | DC5.9 | DQ | DQ | ||||||
| Effective temperature | [K] | 7307.0 (18) | 7487.0 (30) | 7280.0 (20) | 8091.0 | 7852.0 | 8600.0 (200) | 7385.0 | 7264.0 (30) | 10080.0 (2) | |||||||||
| log(g) | [cgs] | 7.36 (0.006) | 7.40 (0.01) | 7.36 (0.009) | 7.73 | 7.63 | 8.00 | 8.00 (0) | 7.33 (0.009) | 9.86 (0.2) | |||||||||
| Mass | [M☉] | 0.276 (0.003) | 0.292 (0.005) | 0.276 (0.003) | 0.447 | 0.381 | 0.58 | 0.267 (0.004) | |||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||||
| Cooling age | [Gyr] | 0.6800 | 0.7440 (0.006) | 0.7427 | 0.7469 | ||||||||||||||
| log(H/He) | |||||||||||||||||||
| log(C/He) | -6.38 | -6.23 | -6.49 | -6.42 (0.02) | |||||||||||||||
| 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] | 17.18 (0.04) | 17.10 (0.05) | 17.10 (0.05) | 17.10 (0.05) | 17.18 | 17.18 (0.04) | 17.10 (0.05) | |||||||||||
| Distance | [pc] | 58.21 (0.1) | 58.48 (0.2) | 58.47 (0.2) | 58.47 (0.2) | 61.00 | 58.21 | 58.21 (0.1) | 58.47 (0.2) | ||||||||||
| Composition | He | He | He | He | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -187.1587045 (0.04) | -187.1878622 (0.07) | -187.159 (0.04) | -187.188 | ||||||||||||||
| Proper motion (declination) | [mas/yr] | -113.2464706 (0.04) | -113.462819 (0.07) | -113.246 (0.04) | -113.463 | ||||||||||||||
| Variability | |||||||||||||||||||
| Magnetic | |||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||
| Binarity | |||||||||||||||||||
| B magnitude | 16.00 | ||||||||||||||||||
| V magnitude | |||||||||||||||||||
| R magnitude | 16.00 | ||||||||||||||||||
| I magnitude | |||||||||||||||||||
| J magnitude | 16.03 (0.01) | 16.02 (0.09) | 16.02 (0.09) | ||||||||||||||||
| H magnitude | 15.89 (0.1) | 15.89 (0.1) | 15.89 (0.1) | ||||||||||||||||
| K magnitude | 15.89 (0.2) | 15.89 (0.2) | 15.89 (0.2) | ||||||||||||||||
| u magnitude | 16.81 (0.007) | 16.81 (0.007) | 16.81 (0.007) | 16.81 (0.007) | 0.32 | 16.81 (0.02) | |||||||||||||
| g magnitude | 16.45 (0.003) | 16.47 (0.002) | 16.45 (0.003) | 16.47 (0.02) | |||||||||||||||
| r magnitude | 16.39 (0.004) | 16.40 (0.004) | 16.39 (0.004) | 16.41 (0.01) | |||||||||||||||
| i magnitude | 16.43 (0.004) | 16.47 (0.006) | 16.43 (0.004) | 16.44 (0.01) | |||||||||||||||
| z magnitude | 16.55 (0.01) | 16.55 (0.002) | 16.55 (0.01) | 16.56 (0.02) | |||||||||||||||
| G magnitude | 16.35 (0.003) | 16.37 | 16.35 | 16.35 (0.003) | 16.37 | ||||||||||||||
| BP magnitude | 16.48 (0.003) | 16.46 | 16.46 | ||||||||||||||||
| RP magnitude | 16.12 (0.002) | 16.12 | 16.12 | ||||||||||||||||
| Pan g magnitude | 16.47 (0.002) | 16.47 (0.002) | 16.48 (0.002) | ||||||||||||||||
| Pan r magnitude | 16.40 (0.004) | 16.40 (0.004) | 16.40 (0.004) | ||||||||||||||||
| Pan i magnitude | 16.47 (0.006) | 16.47 (0.006) | 16.47 (0.006) | ||||||||||||||||
| Pan z magnitude | 16.55 (0.002) | 16.55 (0.002) | 16.55 (0.002) | ||||||||||||||||
| Pan y magnitude | 16.62 (0.009) | 16.62 (0.008) | 16.62 (0.008) | ||||||||||||||||
| E(B-V) | 0.003 | ||||||||||||||||||
* Constant surface field
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