SDSS J223740.40+134850.4
All names: SDSS J223740.40+134850.4, Gaia DR2 2732604978518290816, [CSC85] 2235.2+1355, Gaia EDR3 2732604978518290816, Gaia DR3 2732604978518290816, SDSSJ223740.40+134850.4, SDSS J223740.41+134850.3, GALEX J223740.4+134850
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 37 40.41 (0.3) | 22 37 40.41 | 22 37 40.40 | 22 37 40.41 (0.4) | 22 37 40.41 (0.3) | 22 37 40.41 | |||||
| Declination | 13 48 50.51 (0.3) | 13 48 50.53 | 13 48 50.40 | 13 48 50.51 (0.4) | 13 48 50.53 (0.3) | 13 48 50.48 | |||||
| Spectral type | sdB | sd | sd | sdB | SD_auto | ||||||
| Effective temperature | [K] | 18996.0 | 23044.0 | 26128.0 (840) | |||||||
| log(g) | [cgs] | 6.70 | 6.82 | 5.06 (0.07) | |||||||
| Mass | [M☉] | 0.22 | 0.218 | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 0.42 (0.3) | 0.71 (0.5) | 0.71 (0.5) | 0.42 (0.3) | ||||||
| Distance | [pc] | 2402.86 (2012) | 1400.17 (980) | 1400.24 (980) | 2402.69 (2011) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 1.54811558 (0.4) | 2.553 (0.8) | 2.552711607 (0.8) | 1.548 (0.4) | 7.7 | |||||
| Proper motion (declination) | [mas/yr] | -1.144595338 (0.3) | -0.338 (0.7) | -0.338351356 (0.7) | -1.145 (0.3) | -15.6 | |||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 18.90 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.15 (0.02) | 19.15 (0.02) | 19.25 (0.03) | 19.27 (0.03) | |||||||
| g magnitude | 19.27 (0.01) | 19.27 (0.01) | 19.30 (0.01) | 19.30 (0.02) | |||||||
| r magnitude | 19.69 (0.02) | 19.69 (0.01) | 19.67 (0.02) | 19.67 (0.02) | |||||||
| i magnitude | 19.99 (0.02) | 19.99 (0.02) | 20.02 (0.03) | 20.01 (0.03) | |||||||
| z magnitude | 20.09 (0.1) | 20.09 (0.1) | 20.16 (0.1) | 20.12 (0.1) | |||||||
| G magnitude | 19.49 (0.05) | 19.54 (0.004) | 19.54 | 19.49 (0.005) | |||||||
| BP magnitude | 19.44 (0.05) | 19.36 (0.07) | 19.36 | ||||||||
| RP magnitude | 19.83 (0.1) | 19.75 (0.1) | 19.75 | ||||||||
| Pan g magnitude | 19.33 (0.006) | 19.33 (0.006) | |||||||||
| Pan r magnitude | 19.71 (0.01) | 19.71 (0.01) | |||||||||
| Pan i magnitude | 20.03 (0.02) | 20.03 (0.02) | |||||||||
| Pan z magnitude | 20.21 (0.09) | 20.21 (0.09) | |||||||||
| Pan y magnitude | 20.10 (0.2) | 20.11 (0.2) | |||||||||
| E(B-V) | 0.060 | ||||||||||
* Constant surface field
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