All names: SGPA 189, TIC 66493797, SB 410, Gaia DR2 5027175038609503360, SBC9 3421, GEN# +6.20021410, GSC 06999-02043, HIP 4769, GALEX J010117.6-334243, UBV M 43827, GEN# +6.20035043, 2MASS J01011757-3342454, Ton S 183, HIC 4769, TONS183, Gaia EDR3 5027175038609503360, uvby98 620021410, UBV M 43213, [OMW2007] 29, UBV 966, [MFW2011] 24004, FB 12, UCAC4 282-001150, Gaia DR3 5027175038609503360, CSI-33-00589, PS 2-43, TYC 6999-2043-1
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 01 01 17.56 (0.04) | 01 01 17.56 | 01 01 17.57 (0.04) | ||
| Declination | -33 42 45.67 (0.02) | -33 42 45.39 | -33 42 45.43 (0.02) | ||
| Spectral type | sdB+WD | sdB | |||
| Effective temperature | [K] | 27600.0 (500) | |||
| log(g) | [cgs] | 5.43 (0.05) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 2.05 (0.05) | 2.00 (0.06) | 2.05 (0.05) | |
| Distance | [pc] | 488.21 (11) | 500.18 (14) | 488.21 (11) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -6.917 (0.04) | -6.803 (0.08) | -6.917 (0.04) | |
| Proper motion (declination) | [mas/yr] | -14.456 (0.03) | -14.365 (0.07) | -14.456 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 12.39 (0.02) | ||||
| V magnitude | 14.63 (0.009) | ||||
| R magnitude | 12.95 (0.07) | ||||
| I magnitude | |||||
| J magnitude | 13.23 (0.03) | 13.23 (0.03) | |||
| H magnitude | 13.36 (0.03) | 13.36 (0.03) | |||
| K magnitude | 13.43 (0.04) | 13.43 (0.04) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 12.58 (0.003) | 12.61 (0.0002) | 12.58 (0.003) | ||
| BP magnitude | 12.45 (0.003) | 12.39 (0.004) | |||
| RP magnitude | 12.86 (0.004) | 12.86 (0.001) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.006 | ||||
* 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.