All names: GSC 01990-01794, PPM 102028, SBS 34, PG1234+253, FAUST NGP-1, LAMOST J123723.80+250359.8, Cl* Melotte 111 AV 2361, NAME NC 32, ALS 17215, UBV M 43321, BD+25 2534, TD1 30963, AG+25 1350, 2MASS J12372352+2503598, GEN# +0.02502534, HIC 61602, PG 1234+253, UBV M 1434, WEB 10958, TIC 376537516, Feige 66, GCRV 63421, uvby98 002502534, FAUST 3294, Gaia DR3 3959631234670040704, Gaia DR2 3959631234670040704, UBV 11327, Gaia EDR3 3959631234670040704, HIP 61602, UBV 11326, FB 103, GALEX J123723.5+250400, TYC 1990-1794-1, [SS59] I 313, ROT 12
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 12 37 23.52 (0.05) | 12 37 23.52 | 12 37 23.52 (0.05) | ||
| Declination | 25 03 59.43 (0.03) | 25 03 59.90 | 25 03 59.87 (0.03) | ||
| Spectral type | sdB | sdB1(k) | |||
| Effective temperature | [K] | 34500.0 (1000) | |||
| log(g) | [cgs] | 5.83 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 7.04 (0.06) | 7.07 (0.08) | 7.04 (0.06) | |
| Distance | [pc] | 142.05 (1) | 141.42 (2) | 142.05 (1) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 1.504 (0.07) | 1.833 (0.1) | 1.504 (0.07) | |
| Proper motion (declination) | [mas/yr] | -27.222 (0.06) | -27.425 (0.08) | -27.222 (0.06) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 10.26 (0.03) | ||||
| V magnitude | 10.59 (0.05) | ||||
| R magnitude | 10.64 | ||||
| I magnitude | 10.81 | ||||
| J magnitude | 11.16 (0.02) | 11.16 (0.02) | |||
| H magnitude | 11.27 (0.03) | 11.27 (0.03) | |||
| K magnitude | 11.37 (0.02) | 11.37 (0.02) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | 11.81 (0.003) | ||||
| G magnitude | 10.46 (0.003) | 10.47 (0.0007) | 10.46 (0.003) | ||
| BP magnitude | 10.30 (0.003) | 10.30 (0.002) | |||
| RP magnitude | 10.76 (0.004) | 10.77 (0.0009) | |||
| Pan g magnitude | 10.34 | ||||
| Pan r magnitude | 10.79 | ||||
| Pan i magnitude | 11.14 | ||||
| Pan z magnitude | 11.42 | ||||
| Pan y magnitude | 11.66 | ||||
| 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.