All names: LAMOST J144708.27+072349.5, PG1444+076, TIC 366402142, 2MASS J14470826+0723494, GALEX J144708.2+072348, PG 1444+076, Gaia DR2 1171708967165771392, UCAC4 487-057082, BPS BS 16477-0077, UCAC2 34294080, Gaia DR3 1171708967165771392, SDSS J144708.26+072349.4
| Parameter | Unit | Geier 2020 | Simbad |
|---|---|---|---|
| Right ascension | 14 47 08.38 | 14 47 08.28 (0.04) | |
| Declination | 07 23 51.33 | 07 23 49.56 (0.04) | |
| Spectral type | He-sdO | sdOHe | |
| Effective temperature | [K] | 50640.0 (860) | |
| log(g) | [cgs] | 5.76 (0.1) | |
| Mass | [M☉] | ||
| log(Luminosity) | [L☉] | ||
| Cooling age | [Gyr] | ||
| log(H/He) | |||
| log(C/He) | |||
| log(Ca/He) | |||
| log(Ca/H) | |||
| Parallax | [mas] | 0.50 (0.07) | 0.58 (0.05) |
| Distance | [pc] | 2016.54 (296) | 1716.74 (147) |
| Composition | |||
| Proper motion (right ascension) | [mas/yr] | -30.317 (0.1) | -30.202 (0.05) |
| Proper motion (declination) | [mas/yr] | -40.756 (0.1) | -41.087 (0.04) |
| Variability | |||
| Magnetic | |||
| Bd | [MG] | ||
| Infrared excess (disk) | |||
| Binarity | |||
| B magnitude | 14.44 (0.06) | ||
| V magnitude | 14.72 (0.07) | ||
| R magnitude | |||
| I magnitude | |||
| J magnitude | 15.38 (0.06) | 15.39 (0.005) | |
| H magnitude | 15.50 (0.1) | 15.48 (0.01) | |
| K magnitude | 15.18 | 15.62 (0.02) | |
| u magnitude | 13.93 (0.004) | ||
| g magnitude | 14.34 (0.004) | ||
| r magnitude | 14.87 (0.004) | ||
| i magnitude | 15.24 (0.005) | ||
| z magnitude | 15.58 (0.006) | ||
| G magnitude | 14.63 (0.001) | 14.62 (0.003) | |
| BP magnitude | 14.37 (0.01) | ||
| RP magnitude | 14.93 (0.003) | ||
| Pan g magnitude | 14.45 (0.004) | ||
| Pan r magnitude | 14.89 (0.0009) | ||
| Pan i magnitude | 15.27 (0.002) | ||
| Pan z magnitude | 15.55 (0.003) | ||
| Pan y magnitude | 15.74 (0.006) | ||
| 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.