All names: Gaia DR2 83757226686850816, TIC 247408727, PG0245+182, Gaia EDR3 83757226686850816, UCAC4 543-005281, Gaia DR3 83757226686850816, PG 0245+182, 2MASS J02480749+1826151, GALEX J024807.4+182615
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 02 48 07.50 (0.05) | 02 48 07.48 | 02 48 07.49 (0.05) | ||
| Declination | 18 26 15.53 (0.04) | 18 26 15.73 | 18 26 15.52 (0.04) | ||
| Spectral type | He-sdO | sdOD | |||
| 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] | 0.76 (0.05) | 0.91 (0.08) | 0.76 (0.05) | |
| Distance | [pc] | 1307.70 (85) | 1104.12 (93) | 1307.70 (85) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 3.595 (0.06) | 3.568 (0.2) | 3.595 (0.06) | |
| Proper motion (declination) | [mas/yr] | 0.407 (0.05) | 0.143 (0.1) | 0.407 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.93 (0.09) | ||||
| V magnitude | 15.80 (0.01) | ||||
| R magnitude | 16.15 (0.4) | ||||
| I magnitude | |||||
| J magnitude | 16.69 (0.1) | 16.69 (0.1) | |||
| H magnitude | 16.57 (0.3) | 16.57 (0.3) | |||
| K magnitude | 17.19 | ||||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 15.96 (0.003) | 15.99 (0.003) | 15.96 (0.003) | ||
| BP magnitude | 15.86 (0.005) | 15.80 (0.01) | |||
| RP magnitude | 16.15 (0.007) | 16.15 (0.006) | |||
| Pan g magnitude | 15.84 (0.004) | ||||
| Pan r magnitude | 16.17 (0.005) | ||||
| Pan i magnitude | 16.48 (0.003) | ||||
| Pan z magnitude | 16.73 (0.003) | ||||
| Pan y magnitude | 16.89 (0.009) | ||||
| E(B-V) | 0.095 | ||||
* 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.