All names: 2MASS J08234003+0819365, WISE J082340.05+081936.7, PTF1J082340.04+081936.5, LAMOST J082340.10+081937.2, Gaia DR3 599294211494840704, PTF1 J082340.04+081936.5, Gaia EDR3 599294211494840704, GALEX J082340.0+081937, UCAC4 492-049301, Gaia DR2 599294211494840704
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 23 40.04 (0.04) | 08 23 40.11 | 08 23 40.04 (0.04) | ||
| Declination | 08 19 36.54 (0.03) | 08 19 37.21 | 08 19 36.53 (0.03) | ||
| Spectral type | sdB | sdB+D | |||
| Effective temperature | [K] | 29526.0 (148) | |||
| log(g) | [cgs] | 6.03 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.78 (0.04) | 0.88 (0.07) | 0.78 (0.04) | |
| Distance | [pc] | 1281.07 (74) | 1139.34 (92) | 1281.07 (74) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 0.61 (0.04) | 0.577 (0.1) | 0.61 (0.04) | |
| Proper motion (declination) | [mas/yr] | 0.649 (0.03) | 0.662 (0.07) | 0.649 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.57 (0.09) | ||||
| V magnitude | 14.71 (0.04) | ||||
| R magnitude | 15.09 (0.09) | ||||
| I magnitude | |||||
| J magnitude | 15.32 (0.07) | 15.32 (0.07) | |||
| H magnitude | 15.55 (0.1) | 15.55 (0.1) | |||
| K magnitude | 15.55 | ||||
| u magnitude | 14.30 (0.004) | ||||
| g magnitude | 14.41 (0.003) | 14.53 (0.08) | |||
| r magnitude | 14.90 (0.004) | 14.95 (0.06) | |||
| i magnitude | 15.23 (0.005) | 15.34 (0.1) | |||
| z magnitude | 15.54 (0.006) | ||||
| G magnitude | 14.68 (0.003) | 14.70 (0.001) | 14.68 (0.003) | ||
| BP magnitude | 14.56 (0.004) | 14.49 (0.006) | |||
| RP magnitude | 14.94 (0.005) | 14.93 (0.005) | |||
| Pan g magnitude | 14.54 (0.02) | ||||
| Pan r magnitude | 14.93 (0.004) | ||||
| Pan i magnitude | 15.28 (0.004) | ||||
| Pan z magnitude | 15.55 (0.001) | ||||
| Pan y magnitude | 15.72 (0.005) | ||||
| E(B-V) | 0.026 | ||||
* 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.