All names: HE 2154-4143, TIC 2027508790, UCAC4 243-191620, Gaia EDR3 6571723863269606528, TIC 197687846, GALEX J215802.0-412848, Gaia DR3 6571723863269606528, UCAC2 14319979, Gaia DR2 6571723863269606528, 2MASS J21580196-4128497, HE2154-4143, BPS CS 22881-0007
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 58 02.01 (0.03) | 21 58 01.97 | 21 58 02.00 (0.03) | ||
| Declination | -41 28 50.03 (0.02) | -41 28 49.69 | -41 28 49.89 (0.02) | ||
| 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] | 0.81 (0.04) | 0.83 (0.06) | 0.81 (0.04) | |
| Distance | [pc] | 1232.29 (58) | 1203.51 (84) | 1232.29 (58) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 4.701 (0.03) | 4.634 (0.07) | 4.701 (0.03) | |
| Proper motion (declination) | [mas/yr] | -9.048 (0.03) | -8.958 (0.08) | -9.048 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.95 (0.01) | ||||
| V magnitude | 15.15 (0.02) | ||||
| R magnitude | 15.53 (0.08) | ||||
| I magnitude | |||||
| J magnitude | 15.54 (0.06) | 15.54 (0.06) | |||
| H magnitude | 15.32 (0.1) | 15.32 (0.1) | |||
| K magnitude | 15.43 (0.2) | 15.43 (0.2) | |||
| u magnitude | |||||
| g magnitude | 14.93 (0.01) | ||||
| r magnitude | 15.38 (0.05) | ||||
| i magnitude | 15.52 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 15.15 (0.003) | 15.17 (0.0008) | 15.15 (0.003) | ||
| BP magnitude | 15.00 (0.003) | 14.95 (0.008) | |||
| RP magnitude | 15.39 (0.005) | 15.38 (0.006) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.013 | ||||
* 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.