All names: SDSS J094943.69+301510.3, GALEX J094943.6+301510, CBS 15, PG 0946+305, Ton 456, SDSS J094943.69+301510.4, PG0946+305, Gaia DR2 744660849960764544, Gaia EDR3 744660849960764544, Gaia DR3 744660849960764544, UCAC4 602-046519, LAMOST J094943.69+301510.3
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Guo et al. 2015 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 09 49 43.69 (0.06) | 09 49 43.67 | 09 49 43.69 (0.06) | |||
| Declination | 30 15 10.38 (0.06) | 30 15 10.83 | 30 15 10.44 (0.06) | |||
| Spectral type | He-sdO | DC? | sdOC | |||
| Effective temperature | [K] | 45754.0 (2000) | ||||
| log(g) | [cgs] | 5.96 (0.2) | ||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 0.28 (0.07) | 0.18 (0.1) | 0.28 (0.07) | ||
| Distance | [pc] | 3526.09 (859) | 5446.62 (3272) | 3526.09 (859) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 0.537 (0.07) | 0.334 (0.2) | 0.537 (0.07) | ||
| Proper motion (declination) | [mas/yr] | -3.604 (0.07) | -3.775 (0.2) | -3.604 (0.07) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 16.01 (0.05) | |||||
| V magnitude | 16.56 (0.01) | |||||
| R magnitude | 16.30 (0.08) | |||||
| I magnitude | ||||||
| J magnitude | ||||||
| H magnitude | ||||||
| K magnitude | ||||||
| u magnitude | 15.75 (0.005) | 15.75 (0.005) | ||||
| g magnitude | 16.17 (0.004) | 16.17 (0.004) | ||||
| r magnitude | 16.70 (0.004) | 16.70 (0.004) | ||||
| i magnitude | 17.07 (0.005) | 17.07 (0.005) | ||||
| z magnitude | 17.41 (0.01) | 17.41 (0.01) | ||||
| G magnitude | 16.44 (0.003) | 16.47 (0.003) | 16.44 (0.003) | |||
| BP magnitude | 16.28 (0.005) | 16.20 (0.02) | ||||
| RP magnitude | 16.76 (0.008) | 16.75 (0.01) | ||||
| Pan g magnitude | 16.26 (0.004) | |||||
| Pan r magnitude | 16.71 (0.003) | |||||
| Pan i magnitude | 17.09 (0.004) | |||||
| Pan z magnitude | 17.38 (0.008) | |||||
| Pan y magnitude | 17.60 (0.02) | |||||
| E(B-V) | 0.019 | |||||
* 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.