All names: EC 23291-2909, 2MASS J23314994-2852529, uvby98 610160555, CSI-29-23292, WD 2329-291, EGGR 505, UBV M 43198, PHL 555, 1SWASP J233149.93-285252.6, UCAC2 20058295, UCAC4 306-286234, GD 1669, GALEX J233149.9-285252, Gaia EDR3 2329479382474794240, Gaia DR3 2329479382474794240, Gaia DR2 2329479382474794240, TIC 304389446, EGGR505, UBV 20222, BPS CS 29496-0009, GEN# +6.10160555, Ton S 102
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Geier 2020 | Gaia DR2 | Stilism | Ferrario et al. 2015 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 31 49.97 (0.04) | 23 31 49.96 | 23 31 49.97 (0.05) | 23 31 49.95 (0.04) | 23 31 49.54 | ||||
| Declination | -28 52 53.06 (0.04) | -28 52 53.10 | -28 52 53.05 (0.06) | -28 52 53.00 (0.04) | -28 52 55.92 | ||||
| Spectral type | sdB | DA | sdB | DAWK | |||||
| Effective temperature | [K] | 34126.0 (500) | 24000.0 | ||||||
| log(g) | [cgs] | 5.77 (0.05) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 1.54 (0.05) | 1.47 (0.07) | 1.47 (0.07) | 1.54 (0.05) | ||||
| Distance | [pc] | 647.97 (20) | 678.47 (34) | 678.47 (34) | 647.96 (20) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 15.56362925 (0.06) | 15.798 (0.09) | 15.79767369 (0.09) | 15.564 (0.06) | ||||
| Proper motion (declination) | [mas/yr] | -3.643705154 (0.05) | -3.581 (0.1) | -3.581120965 (0.1) | -3.644 (0.05) | ||||
| Variability | |||||||||
| Magnetic | yes | ||||||||
| Bd | [MG] | 0.031 | |||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 13.65 (0.03) | ||||||||
| V magnitude | 13.86 (0.02) | ||||||||
| R magnitude | 14.26 (0.1) | ||||||||
| I magnitude | |||||||||
| J magnitude | 14.53 (0.03) | 14.53 (0.03) | |||||||
| H magnitude | 14.60 (0.05) | 14.60 (0.05) | |||||||
| K magnitude | 14.68 (0.09) | 14.68 (0.09) | |||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 13.84 (0.002) | 13.85 (0.0008) | 13.85 | 13.84 (0.003) | |||||
| BP magnitude | 13.69 (0.002) | 13.63 (0.01) | 13.63 | ||||||
| RP magnitude | 14.14 (0.001) | 14.14 (0.003) | 14.14 | ||||||
| Pan g magnitude | 13.65 (0.002) | 13.65 (0.002) | |||||||
| Pan r magnitude | 14.11 (0.004) | 14.11 (0.004) | |||||||
| Pan i magnitude | 14.47 (0.003) | 14.47 (0.003) | |||||||
| Pan z magnitude | 14.76 (0.005) | 14.76 (0.005) | |||||||
| Pan y magnitude | 14.94 (0.007) | 14.94 (0.007) | |||||||
| E(B-V) | 0.010 | ||||||||
* 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.