All names: Gaia DR3 2121507140335079424, GALEXJ18165+4623, Gaia EDR3 2121507140335079424, WISE J181635.34+462316.6, TIC 7772909, 2MASS J18163536+4623165, Gaia DR2 2121507140335079424, WISEA J181635.33+462316.5, UCAC4 682-060891, GALEX J181635.2+462316
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 16 35.33 (0.03) | 18 16 35.30 | 18 16 35.36 (0.03) | ||
| Declination | 46 23 16.49 (0.03) | 46 23 16.06 | 46 23 16.67 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.01 (0.03) | 0.93 (0.05) | 1.01 (0.03) | |
| Distance | [pc] | 987.36 (32) | 1076.19 (60) | 987.36 (32) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -18.4 (0.04) | -18.304 (0.1) | -18.4 (0.04) | |
| Proper motion (declination) | [mas/yr] | -11.197 (0.04) | -11.199 (0.09) | -11.197 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.45 (0.07) | ||||
| V magnitude | 14.69 (0.02) | ||||
| R magnitude | 14.97 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.29 (0.05) | 15.29 (0.05) | |||
| H magnitude | 15.32 (0.1) | 15.32 (0.1) | |||
| K magnitude | 15.29 (0.2) | 15.29 (0.2) | |||
| u magnitude | |||||
| g magnitude | 14.42 (0.04) | ||||
| r magnitude | 14.96 (0.06) | ||||
| i magnitude | 15.29 (0.1) | ||||
| z magnitude | |||||
| G magnitude | 14.64 (0.003) | 14.65 (0.0007) | 14.64 (0.003) | ||
| BP magnitude | 14.48 (0.004) | 14.42 (0.009) | |||
| RP magnitude | 14.93 (0.004) | 14.93 (0.003) | |||
| Pan g magnitude | 14.47 (0.003) | ||||
| Pan r magnitude | 14.91 (0.002) | ||||
| Pan i magnitude | 15.28 (0.002) | ||||
| Pan z magnitude | 15.54 (0.003) | ||||
| Pan y magnitude | 15.75 (0.003) | ||||
| E(B-V) | 0.032 | ||||
* 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.