All names: UBV 20667, FB 1, PHL 2580, Gaia DR3 2339774698257101312, MCT 0000-2355, Gaia EDR3 2339774698257101312, uvby98 610162580, Ton S 135, uvby98 620021008, SBC9 3426, Gaia DR2 2339774698257101312, 2MASS J00032206-2338579, GEN# +6.10162580, GALEX J000321.9-233855, GSC 06412-00418, TIC 138707823, HE 0000-2355, CSI-23-00007, EC 00008-2355, BPS CS 29503-0012, UBV M 43204, CSI-23-00008, SB 8, FB1
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 00 03 22.08 (0.03) | 00 03 22.06 | 00 03 22.07 (0.03) | ||
| Declination | -23 38 58.32 (0.02) | -23 38 57.99 | -23 38 58.03 (0.02) | ||
| Spectral type | sdB+WD | sdBHe1 | |||
| Effective temperature | [K] | 25000.0 (1250) | |||
| log(g) | [cgs] | 5.60 (0.2) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.51 (0.04) | 1.44 (0.06) | 1.51 (0.04) | |
| Distance | [pc] | 663.09 (16) | 695.99 (28) | 663.09 (16) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 6.771 (0.04) | 6.714 (0.1) | 6.771 (0.04) | |
| Proper motion (declination) | [mas/yr] | -18.523 (0.03) | -18.625 (0.07) | -18.523 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.05 | ||||
| V magnitude | 13.30 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 13.87 (0.03) | 13.87 (0.03) | |||
| H magnitude | 14.02 (0.05) | 14.02 (0.05) | |||
| K magnitude | 14.06 (0.05) | 14.06 (0.05) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 13.25 (0.003) | 13.27 (0.0006) | 13.25 (0.003) | ||
| BP magnitude | 13.12 (0.003) | 13.08 (0.006) | |||
| RP magnitude | 13.51 (0.004) | 13.51 (0.001) | |||
| Pan g magnitude | 13.27 | ||||
| Pan r magnitude | 13.51 (0.002) | ||||
| Pan i magnitude | 13.86 (0.002) | ||||
| Pan z magnitude | 14.12 (0.004) | ||||
| Pan y magnitude | 14.29 (0.006) | ||||
| E(B-V) | 0.009 | ||||
* 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.