All names: Gaia DR3 6891104778224376320, 2MASS J21275284-1242367, EC21251-1255a, Gaia DR2 6891104778224376320, UCAC4 387-143291, EC 21251-1255a
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 21 27 52.82 | 21 27 52.84 (0.04) | ||
Declination | -12 42 37.12 | -12 42 36.78 (0.04) | ||
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] | 0.12 (0.08) | 0.11 (0.04) | |
Distance | [pc] | 8156.61 (5269) | 9433.96 (3418) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | -2.115 (0.2) | -1.943 (0.05) | |
Proper motion (declination) | [mas/yr] | -6.75 (0.3) | -6.366 (0.05) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 14.54 (0.03) | |||
V magnitude | 14.53 (0.01) | |||
R magnitude | 14.78 (0.06) | |||
I magnitude | ||||
J magnitude | 14.92 (0.04) | 14.92 (0.04) | ||
H magnitude | 14.88 (0.06) | 14.88 (0.06) | ||
K magnitude | 15.04 (0.1) | 15.04 (0.1) | ||
u magnitude | ||||
g magnitude | 14.47 (0.02) | |||
r magnitude | 14.74 (0.02) | |||
i magnitude | 15.03 (0.2) | |||
z magnitude | ||||
G magnitude | 14.59 (0.0006) | 14.57 (0.003) | ||
BP magnitude | 14.49 (0.005) | |||
RP magnitude | 14.70 (0.003) | |||
Pan g magnitude | 14.46 (0.001) | |||
Pan r magnitude | 14.76 (0.002) | |||
Pan i magnitude | 15.03 (0.002) | |||
Pan z magnitude | 15.24 (0.002) | |||
Pan y magnitude | 15.35 (0.003) | |||
E(B-V) | 0.034 |
* 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.