All names: Gaia DR3 6838441946529180800, UCAC4 370-186397, EC 21397-1619, Gaia EDR3 6838441946529180800, BPS CS 22944-0007, Gaia DR2 6838441946529180800, 2MASS J21422855-1605166, EC21397-1619
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Simbad |
|---|---|---|---|---|
| Right ascension | 21 42 28.56 (0.06) | 21 42 28.54 | 21 42 28.56 (0.06) | |
| Declination | -16 05 16.79 (0.06) | -16 05 16.15 | -16 05 16.68 (0.06) | |
| Spectral type | sdOB | sdOB | ||
| 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] | 1.08 (0.07) | 1.08 (0.07) | |
| Distance | [pc] | 928.25 (60) | 928.25 (60) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.832 (0.08) | 0.832 (0.08) | |
| Proper motion (declination) | [mas/yr] | -7.161 (0.07) | -7.161 (0.07) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.75 (0.02) | |||
| V magnitude | 14.95 (0.03) | |||
| R magnitude | 15.21 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.55 (0.06) | 15.55 (0.06) | ||
| H magnitude | 15.70 (0.1) | 15.70 (0.1) | ||
| K magnitude | 15.57 | |||
| u magnitude | ||||
| g magnitude | 14.76 (0.03) | |||
| r magnitude | 15.13 (0.02) | |||
| i magnitude | 15.44 (0.1) | |||
| z magnitude | ||||
| G magnitude | 14.90 (0.003) | 14.92 (0.0009) | 14.90 (0.003) | |
| BP magnitude | 14.76 (0.003) | 14.70 (0.01) | ||
| RP magnitude | 15.17 (0.004) | 15.18 (0.003) | ||
| Pan g magnitude | 14.76 (0.005) | |||
| Pan r magnitude | 15.16 (0.004) | |||
| Pan i magnitude | 15.51 (0.002) | |||
| Pan z magnitude | 15.78 (0.003) | |||
| Pan y magnitude | 15.97 (0.005) | |||
| E(B-V) | ||||
* 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.