All names: GALEX J180007.3+313438, Gaia DR2 4603104815507642752, UCAC4 608-059552, Gaia EDR3 4603104815507642752, LAMOST J180007.26+313437.5, Gaia DR3 4603104815507642752, LAMOSTJ180007.26+313437.4, 2MASS J18000726+3134375
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 00 07.26 (0.02) | 18 00 07.26 | 18 00 07.26 (0.02) | ||
| Declination | 31 34 37.36 (0.03) | 31 34 37.57 | 31 34 37.41 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 26970.0 (440) | |||
| log(g) | [cgs] | 5.52 (0.05) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.67 (0.03) | 0.59 (0.05) | 0.67 (0.03) | |
| Distance | [pc] | 1497.01 (76) | 1685.20 (150) | 1497.01 (76) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -0.973 (0.03) | -1.094 (0.08) | -0.973 (0.03) | |
| Proper motion (declination) | [mas/yr] | -2.994 (0.03) | -2.978 (0.08) | -2.994 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | 15.45 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.68 (0.07) | 15.68 (0.07) | |||
| H magnitude | 15.71 (0.1) | 15.71 (0.1) | |||
| K magnitude | 15.67 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.21 (0.003) | 15.23 (0.0007) | 15.21 (0.003) | ||
| BP magnitude | 15.10 (0.003) | 15.05 (0.006) | |||
| RP magnitude | 15.44 (0.004) | 15.43 (0.003) | |||
| Pan g magnitude | 15.05 (0.003) | ||||
| Pan r magnitude | 15.45 (0.003) | ||||
| Pan i magnitude | 15.77 (0.002) | ||||
| Pan z magnitude | 16.02 (0.003) | ||||
| Pan y magnitude | 16.18 (0.005) | ||||
| E(B-V) | 0.043 | ||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.