All names: HE 2307-0340, Gaia DR2 2637242174672595200, HE2307-0340, Gaia DR3 2637242174672595200, 2MASS J23102405-0324013, Gaia EDR3 2637242174672595200, TIC 278966245, PHL 412
Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|---|
Right ascension | 23 10 24.04 (0.04) | 23 10 24.08 | 23 10 24.05 (0.04) | ||
Declination | -03 24 01.38 (0.04) | -03 24 02.30 | -03 24 01.23 (0.04) | ||
Spectral type | sdB | sdB | |||
Effective temperature | [K] | 23260.0 (500) | |||
log(g) | [cgs] | 5.51 (0.05) | |||
Mass | [M☉] | ||||
log(Luminosity) | [L☉] | ||||
Cooling age | [Gyr] | ||||
log(H/He) | |||||
log(C/He) | |||||
log(Ca/He) | |||||
log(Ca/H) | |||||
Parallax | [mas] | 0.75 (0.06) | 0.77 (0.07) | 0.75 (0.06) | |
Distance | [pc] | 1337.08 (100) | 1295.50 (122) | 1337.08 (100) | |
Composition | |||||
Proper motion (right ascension) | [mas/yr] | -3.86 (0.05) | -3.921 (0.1) | -3.86 (0.05) | |
Proper motion (declination) | [mas/yr] | -9.441 (0.04) | -9.585 (0.09) | -9.441 (0.04) | |
Variability | |||||
Magnetic | |||||
Bd | [MG] | ||||
Infrared excess (disk) | |||||
Binarity | |||||
B magnitude | 15.80 | ||||
V magnitude | 16.10 | ||||
R magnitude | |||||
I magnitude | |||||
J magnitude | 16.03 (0.09) | 16.03 (0.09) | |||
H magnitude | 16.05 (0.2) | 16.05 (0.2) | |||
K magnitude | 15.21 | ||||
u magnitude | 15.38 (0.004) | ||||
g magnitude | 15.37 (0.003) | ||||
r magnitude | 15.79 (0.004) | ||||
i magnitude | 16.08 (0.004) | ||||
z magnitude | 16.38 (0.008) | ||||
G magnitude | 15.59 (0.003) | 15.61 (0.001) | 15.59 (0.003) | ||
BP magnitude | 15.49 (0.004) | 15.47 (0.008) | |||
RP magnitude | 15.78 (0.004) | 15.78 (0.004) | |||
Pan g magnitude | 15.43 (0.002) | ||||
Pan r magnitude | 15.80 (0.002) | ||||
Pan i magnitude | 16.11 (0.004) | ||||
Pan z magnitude | 16.35 (0.004) | ||||
Pan y magnitude | 16.48 (0.02) | ||||
E(B-V) | 0.040 |
* 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.