All names: SDSS J212055.95-063918.2, SDSS J212055.95-063918.3, SDSSJ212055.95-063918.3, Gaia DR2 6899029954958005248, Gaia DR3 6899029954958005248, UCAC4 417-144566, 2MASS J21205595-0639182, GALEX J212055.9-063918
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 20 55.95 | 21 20 55.96 (0.04) | ||
| Declination | -06 39 18.30 | -06 39 18.34 (0.03) | ||
| Spectral type | sdOB | sdB0.2He12 | ||
| Effective temperature | [K] | 31152.0 (945) | ||
| log(g) | [cgs] | 5.71 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.48 (0.08) | 0.63 (0.05) | |
| Distance | [pc] | 2084.20 (362) | 1579.28 (126) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 5.614 (0.1) | 5.221 (0.05) | |
| Proper motion (declination) | [mas/yr] | 4.044 (0.1) | 4.227 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.02 (0.04) | |||
| V magnitude | 15.97 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.07 (0.07) | 16.07 (0.07) | ||
| H magnitude | 16.26 (0.2) | 16.26 (0.2) | ||
| K magnitude | 16.37 | |||
| u magnitude | 15.82 (0.006) | 15.82 (0.006) | ||
| g magnitude | 15.83 (0.004) | 15.96 (0.01) | ||
| r magnitude | 16.08 (0.005) | 16.14 (0.01) | ||
| i magnitude | 16.29 (0.006) | 16.29 (0.006) | ||
| z magnitude | 16.50 (0.009) | 16.50 (0.009) | ||
| G magnitude | 15.95 (0.001) | 15.93 (0.003) | ||
| BP magnitude | 15.86 (0.005) | |||
| RP magnitude | 15.97 (0.006) | |||
| Pan g magnitude | 15.87 (0.002) | |||
| Pan r magnitude | 16.09 (0.002) | |||
| Pan i magnitude | 16.32 (0.002) | |||
| Pan z magnitude | 16.52 (0.005) | |||
| Pan y magnitude | 16.67 (0.006) | |||
| E(B-V) | 0.034 | |||
* 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.