GD 193
All names: KUV 15498+2007, SDSS J155200.90+195751.4, USNO-B1.0 1099-00243921, Gaia DR3 1204051067339635072, 2MASS J15520094+1957525, TIC 422975053, GALEX J155200.9+195751, GEN# +6.10060193, GD 193, SDSS J155200.90+195751.41, SDSS J155200.92+195752.4, Gaia EDR3 1204051067339635072, Gaia DR2 1204051067339635072, WDJ155200.94+195753.15, LSPM J1552+1957, SDSS J155200.91+195752.4
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Kilic et al. 2025 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 52 00.87 (0.03) | 15 52 00.92 | 15 52 00.88 (0.04) | 15 52 00.87 | 15 52 00.94 (0.03) | 15 52 00.88 | ||||||||
| Declination | 19 57 50.45 (0.03) | 19 57 52.43 | 19 57 50.53 (0.04) | 19 57 50.45 | 19 57 53.15 (0.03) | 19 57 50.53 | ||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC | |||||||
| Effective temperature | [K] | 9823.0 (63) | 10384.0 | 10488.0 | 11273.0 (403) | 9693.0 (93) | ||||||||
| log(g) | [cgs] | 7.96 (0.01) | 8.20 | 8.15 | 8.00 (0) | 7.96 (0.01) | ||||||||
| Mass | [M☉] | 0.558 (0.009) | 0.727 | 0.674 | 0.556 (0.01) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.7393 | 0.6891 | |||||||||||
| log(H/He) | -4.6 | |||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | ||||||||||||||
| log(Ca/H) | ||||||||||||||
| Parallax | [mas] | 17.07 (0.05) | 17.10 (0.06) | 17.07 | 17.07 (0.05) | 17.10 (0.06) | ||||||||
| Distance | [pc] | 58.58 (0.2) | 58.49 (0.2) | 58.58 | 58.58 (0.2) | 58.49 (0.2) | ||||||||
| Composition | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -54.02546026 (0.04) | -54.17952149 (0.09) | -54.025 (0.04) | -54.17952149 | |||||||||
| Proper motion (declination) | [mas/yr] | -168.9016704 (0.04) | -169.0042809 (0.08) | -168.902 (0.04) | -169.0042809 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 16.26 | |||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | 16.10 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.13 (0.1) | |||||||||||||
| H magnitude | 15.89 (0.2) | |||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 16.30 (0.006) | 16.33 (0.02) | 16.30 (0.006) | 16.25 (0.005) | ||||||||||
| g magnitude | 16.15 (0.004) | 16.19 (0.03) | 16.15 (0.004) | 16.13 (0.003) | ||||||||||
| r magnitude | 16.29 (0.004) | 16.29 (0.02) | 16.29 (0.004) | 16.28 (0.004) | ||||||||||
| i magnitude | 16.44 (0.005) | 16.45 (0.01) | 16.44 (0.005) | 16.43 (0.004) | ||||||||||
| z magnitude | 16.65 (0.009) | 16.65 (0.02) | 16.65 (0.009) | 16.61 (0.009) | ||||||||||
| G magnitude | 16.18 (0.003) | 16.20 | 16.18 | 16.18 (0.003) | 16.20 | |||||||||
| BP magnitude | 16.21 (0.003) | 16.17 | 16.17 | |||||||||||
| RP magnitude | 16.12 (0.005) | 16.11 | 16.11 | |||||||||||
| Pan g magnitude | 16.17 (0.003) | |||||||||||||
| Pan r magnitude | 16.29 (0.001) | |||||||||||||
| Pan i magnitude | 16.45 (0.002) | |||||||||||||
| Pan z magnitude | 16.61 (0.004) | |||||||||||||
| Pan y magnitude | 16.73 (0.008) | |||||||||||||
| E(B-V) | 0.006 | |||||||||||||
* Constant surface field
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