All names: TIC 264468331, Gaia DR2 2297889558713251840, 2MASS J21415452+8211353, HS2143+8157, Gaia DR3 2297889558713251840, HS 2143+8157, UCAC4 861-011518
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 41 54.97 | 21 41 54.60 (0.03) | ||
| Declination | 82 11 35.09 | 82 11 35.33 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 25600.0 (700) | ||
| log(g) | [cgs] | 5.10 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.61 (0.04) | 0.60 (0.03) | |
| Distance | [pc] | 1652.62 (102) | 1672.80 (91) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.945 (0.08) | 2.787 (0.05) | |
| Proper motion (declination) | [mas/yr] | 3.031 (0.07) | 3.0 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | 16.10 (0.1) | |||
| I magnitude | ||||
| J magnitude | 16.02 (0.1) | 16.02 (0.1) | ||
| H magnitude | 15.91 (0.2) | 15.91 (0.2) | ||
| K magnitude | 15.60 (0.2) | 15.60 (0.2) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 15.58 (0.0006) | 15.56 (0.003) | ||
| BP magnitude | 15.45 (0.006) | |||
| RP magnitude | 15.71 (0.003) | |||
| Pan g magnitude | 15.46 (0.005) | |||
| Pan r magnitude | 15.76 (0.004) | |||
| Pan i magnitude | 16.05 (0.003) | |||
| Pan z magnitude | 16.29 (0.006) | |||
| Pan y magnitude | 16.46 (0.008) | |||
| E(B-V) | 0.191 | |||
* 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.