All names: SDSS J215418.65+091143.1, PG2151+089, HS 2151+0857, V* V387 Peg, USNO-B1.0 0991-00592168, Gaia DR2 2725953757803267712, Gaia DR3 2725953757803267712, PG 2151+089, GALEX J215418.6+091143, 2MASS J21541864+0911429, TIC 466419219
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 54 18.67 | 21 54 18.66 (0.05) | ||
| Declination | 09 11 43.73 | 09 11 43.16 (0.05) | ||
| Spectral type | sdBV | sdOB | ||
| Effective temperature | [K] | 34500.0 (800) | ||
| log(g) | [cgs] | 6.10 (0.3) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.58 (0.1) | 0.37 (0.07) | |
| Distance | [pc] | 1738.83 (325) | 2677.38 (482) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.649 (0.1) | 0.442 (0.06) | |
| Proper motion (declination) | [mas/yr] | -3.305 (0.1) | -3.445 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.30 | |||
| V magnitude | ||||
| R magnitude | 15.20 | |||
| I magnitude | ||||
| J magnitude | 16.61 (0.1) | 16.61 (0.1) | ||
| H magnitude | 16.00 (0.2) | 16.00 (0.2) | ||
| K magnitude | 15.65 | |||
| u magnitude | 16.24 (0.006) | |||
| g magnitude | 16.47 (0.004) | |||
| r magnitude | 16.87 (0.005) | |||
| i magnitude | 17.07 (0.006) | |||
| z magnitude | 17.22 (0.01) | |||
| G magnitude | 16.70 (0.002) | 16.68 (0.003) | ||
| BP magnitude | 16.50 (0.01) | |||
| RP magnitude | 16.73 (0.02) | |||
| Pan g magnitude | 16.55 (0.003) | |||
| Pan r magnitude | 16.90 (0.001) | |||
| Pan i magnitude | 17.13 (0.003) | |||
| Pan z magnitude | 17.28 (0.009) | |||
| Pan y magnitude | 17.36 (0.008) | |||
| E(B-V) | 0.054 | |||
* 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.