All names: HE 0001-2443, EC 00019-2443, CSI-24-00020, BPS CS 29503-0009, Gaia DR2 2336589275632410496, PHL 645, SB 21, 2MASS J00043100-2426213, uvby98 610160645, MCT0001-2443, GEN# +6.10160645, MCT 0001-2443, Gaia DR3 2336589275632410496, TIC 12378718, Gaia EDR3 2336589275632410496, Ton S 137, GALEX J000430.8-242620
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 00 04 31.02 (0.05) | 00 04 31.00 | 00 04 31.00 (0.05) | ||
| Declination | -24 26 21.80 (0.03) | -24 26 21.19 | -24 26 21.32 (0.03) | ||
| Spectral type | He-sdO | sdO8He4 | |||
| Effective temperature | [K] | 40975.0 (1000) | |||
| log(g) | [cgs] | 5.94 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.43 (0.05) | 1.35 (0.05) | 1.43 (0.05) | |
| Distance | [pc] | 701.36 (24) | 742.39 (30) | 701.36 (24) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 12.035 (0.06) | 11.803 (0.1) | 12.035 (0.06) | |
| Proper motion (declination) | [mas/yr] | -29.984 (0.04) | -30.018 (0.06) | -29.984 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.66 | ||||
| V magnitude | 13.80 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 14.54 (0.03) | 14.54 (0.03) | |||
| H magnitude | 14.73 (0.06) | 14.73 (0.06) | |||
| K magnitude | 14.76 (0.1) | 14.76 (0.1) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 13.82 (0.003) | 13.83 (0.0006) | 13.82 (0.003) | ||
| BP magnitude | 13.67 (0.003) | 13.60 (0.007) | |||
| RP magnitude | 14.12 (0.004) | 14.12 (0.003) | |||
| Pan g magnitude | 13.69 (0.009) | ||||
| Pan r magnitude | 14.09 (0.003) | ||||
| Pan i magnitude | 14.46 (0.003) | ||||
| Pan z magnitude | 14.76 (0.006) | ||||
| Pan y magnitude | 14.93 (0.006) | ||||
| E(B-V) | 0.008 | ||||
* 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.