All names: Gaia DR2 4605575383775753856, GALEX J181632.4+345549, LAMOST J181632.49+345549.1, Gaia EDR3 4605575383775753856, UCAC4 625-058108, Gaia DR3 4605575383775753856, LAMOSTJ181632.50+345549.2, 2MASS J18163250+3455492
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 16 32.49 (0.03) | 18 16 32.49 | 18 16 32.50 (0.03) | ||
| Declination | 34 55 49.12 (0.04) | 34 55 49.13 | 34 55 49.22 (0.04) | ||
| Spectral type | sdO | sdO | |||
| Effective temperature | [K] | 47780.0 (1720) | |||
| log(g) | [cgs] | 5.48 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.49 (0.04) | 0.42 (0.06) | 0.49 (0.04) | |
| Distance | [pc] | 2025.93 (181) | 2376.43 (325) | 2025.93 (181) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -8.155 (0.05) | -8.232 (0.1) | -8.155 (0.05) | |
| Proper motion (declination) | [mas/yr] | -5.993 (0.06) | -6.005 (0.1) | -5.993 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | 16.21 (0.3) | ||||
| I magnitude | |||||
| J magnitude | 16.57 (0.09) | 16.57 (0.09) | |||
| H magnitude | 16.69 (0.2) | 16.69 (0.2) | |||
| K magnitude | 15.86 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 16.00 (0.003) | 16.02 (0.002) | 16.00 (0.003) | ||
| BP magnitude | 15.84 (0.004) | 15.76 (0.01) | |||
| RP magnitude | 16.31 (0.007) | 16.31 (0.004) | |||
| Pan g magnitude | 15.81 (0.005) | ||||
| Pan r magnitude | 16.28 (0.002) | ||||
| Pan i magnitude | 16.65 (0.002) | ||||
| Pan z magnitude | 16.93 (0.005) | ||||
| Pan y magnitude | 17.10 (0.01) | ||||
| E(B-V) | 0.044 | ||||
* 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.