All names: TIC 297026647, 2MASS J12280741-1230297, BPS BS 16558-0054, Gaia EDR3 3576528673082072320, Gaia DR3 3576528673082072320, GALEX J122807.5-123029, Gaia DR2 3576528673082072320, PG1225-122, UCAC4 388-059446, PG 1225-122
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 28 07.37 (0.04) | 12 28 07.53 | 12 28 07.41 (0.04) | ||
| Declination | -12 30 29.78 (0.02) | -12 30 30.07 | -12 30 29.89 (0.02) | ||
| Spectral type | sdB | sdB | |||
| 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] | 1.19 (0.04) | 1.02 (0.07) | 1.19 (0.04) | |
| Distance | [pc] | 840.34 (32) | 980.01 (71) | 840.34 (32) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -34.844 (0.05) | -34.809 (0.1) | -34.844 (0.05) | |
| Proper motion (declination) | [mas/yr] | 6.734 (0.04) | 6.809 (0.07) | 6.734 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.42 (0.08) | ||||
| V magnitude | 14.64 (0.1) | ||||
| R magnitude | 14.71 (0.1) | ||||
| I magnitude | |||||
| J magnitude | 15.10 (0.05) | 15.10 (0.05) | |||
| H magnitude | 15.13 (0.07) | 15.13 (0.07) | |||
| K magnitude | 16.37 | ||||
| u magnitude | |||||
| g magnitude | 14.40 (0.07) | ||||
| r magnitude | 14.79 (0.06) | ||||
| i magnitude | 15.23 (0.2) | ||||
| z magnitude | |||||
| G magnitude | 14.53 (0.003) | 14.55 (0.0005) | 14.53 (0.003) | ||
| BP magnitude | 14.41 (0.003) | 14.38 (0.005) | |||
| RP magnitude | 14.75 (0.004) | 14.75 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | 19.57 (0.4) | ||||
| E(B-V) | 0.028 | ||||
* 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.