All names: LAMOST J152045.95+294826.4, SDSS J152045.95+294826.4, LB 810, Gaia EDR3 1275262415380252544, TIC 357502958, Gaia DR3 1275262415380252544, Gaia DR2 1275262415380252544, 2MASS J15204596+2948266, PG 1518+299, GALEX J152045.9+294825, PG1518+299, LAMOST J152045.93+294825.7, UCAC2 42243460, UCAC4 600-053789
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 15 20 45.95 (0.02) | 15 20 45.98 | 15 20 45.96 (0.02) | ||
| Declination | 29 48 26.36 (0.03) | 29 48 26.75 | 29 48 26.41 (0.03) | ||
| Spectral type | sdOB | sdOA | |||
| Effective temperature | [K] | 37890.0 (480) | |||
| log(g) | [cgs] | 6.03 (0.07) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.67 (0.05) | 0.75 (0.07) | 0.67 (0.05) | |
| Distance | [pc] | 1499.70 (114) | 1337.26 (116) | 1499.70 (114) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -9.034 (0.03) | -8.994 (0.07) | -9.034 (0.03) | |
| Proper motion (declination) | [mas/yr] | -3.126 (0.04) | -3.483 (0.09) | -3.126 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.44 (0.01) | ||||
| V magnitude | 15.69 (0.01) | ||||
| R magnitude | 16.02 (0.08) | ||||
| I magnitude | |||||
| J magnitude | 16.39 (0.1) | 16.39 (0.1) | |||
| H magnitude | 16.78 | 16.50 (0.03) | |||
| K magnitude | 16.23 | 16.63 (0.05) | |||
| u magnitude | 15.04 (0.004) | 15.04 (0.004) | |||
| g magnitude | 15.37 (0.003) | 15.37 (0.003) | |||
| r magnitude | 15.92 (0.004) | 15.92 (0.004) | |||
| i magnitude | 16.26 (0.004) | 16.26 (0.004) | |||
| z magnitude | 16.66 (0.01) | 16.66 (0.01) | |||
| G magnitude | 15.66 (0.003) | 15.68 (0.0006) | 15.66 (0.003) | ||
| BP magnitude | 15.51 (0.003) | 15.43 (0.008) | |||
| RP magnitude | 15.97 (0.005) | 15.97 (0.003) | |||
| Pan g magnitude | 15.49 (0.004) | ||||
| Pan r magnitude | 15.93 (0.001) | ||||
| Pan i magnitude | 16.30 (0.002) | ||||
| Pan z magnitude | 16.58 (0.003) | ||||
| Pan y magnitude | 16.79 (0.009) | ||||
| E(B-V) | 0.031 | ||||
* 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.