SDSS J121856.69+414800.2
All names: Gaia EDR3 1536515444813446528, GALEX J121856.6+414800, SDSS J121856.69+414800.3, Gaia DR3 1536515444813446528, SDSS J121856.67+414800.0, CSO 1300, SDSS J121856.69+414800.2, Gaia DR2 1536515444813446528
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 18 56.66 (0.1) | 12 18 56.69 | 12 18 56.66 (0.1) | 12 18 56.66 | 12 18 56.70 (0.1) | 12 18 56.69 | ||||||
| Declination | 41 47 59.94 (0.1) | 41 48 00.29 | 41 47 59.95 (0.1) | 41 47 59.94 | 41 48 00.29 (0.1) | 41 48 00.30 | ||||||
| Spectral type | DC_VERYHOT | DC_VERYHOT | DC | DC | DC_VERYHOT | DC | ||||||
| Effective temperature | [K] | 19104.0 | 20967.0 | 29717.0 (3609) | 50000.0 (50) | |||||||
| log(g) | [cgs] | 8.81 | 8.97 | 9.10 (0.06) | 7.02 (0.03) | |||||||
| Mass | [M☉] | 1.113 | 1.175 | 1.232 (0.02) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.3891 | 0.4029 | |||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 5.62 (0.2) | 5.79 (0.2) | 5.62 | 5.62 (0.2) | |||||||
| Distance | [pc] | 177.79 (6) | 172.78 (6) | 177.79 | 177.79 (6) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -26.93310452 (0.1) | -27.09347657 (0.2) | -26.933 (0.1) | ||||||||
| Proper motion (declination) | [mas/yr] | -21.70527131 (0.2) | -21.89129327 (0.2) | -21.705 (0.2) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.93 (0.01) | 17.93 (0.01) | 17.90 (0.02) | |||||||||
| g magnitude | 18.17 (0.007) | 18.17 (0.007) | 18.17 (0.02) | |||||||||
| r magnitude | 18.62 (0.009) | 18.62 (0.009) | 18.62 (0.02) | |||||||||
| i magnitude | 18.91 (0.01) | 18.91 (0.01) | 18.90 (0.01) | |||||||||
| z magnitude | 19.22 (0.05) | 19.21 (0.05) | 19.22 (0.05) | |||||||||
| G magnitude | 18.43 (0.02) | 18.47 | 18.43 | 18.43 (0.003) | ||||||||
| BP magnitude | 18.34 (0.02) | 18.28 | ||||||||||
| RP magnitude | 18.67 (0.02) | 18.57 | ||||||||||
| Pan g magnitude | 18.29 (0.009) | |||||||||||
| Pan r magnitude | 18.64 (0.01) | |||||||||||
| Pan i magnitude | 18.94 (0.02) | |||||||||||
| Pan z magnitude | 19.20 (0.02) | |||||||||||
| Pan y magnitude | 19.31 (0.02) | |||||||||||
| E(B-V) | 0.009 | |||||||||||
* Constant surface field
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