All names: Gaia DR2 2837982520817733376, [TFW97] J232427.45+213851.42, Gaia DR3 2837982520817733376, Balloon 93738001, 2MASS J23242746+2138512, GALEX J232427.5+213850, LAMOST J232427.46+213851.2, TIC 243144803, CHSS 2933, Balloon 83738001, PG 2321+214, PG2321+214
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 23 24 27.40 | 23 24 27.47 (0.03) | ||
Declination | 21 38 51.60 | 21 38 51.32 (0.02) | ||
Spectral type | He-sdOB | sdBN0VIIHe37 | ||
Effective temperature | [K] | 41900.0 (40) | ||
log(g) | [cgs] | 6.05 (0.04) | ||
Mass | [M☉] | |||
log(Luminosity) | [L☉] | |||
Cooling age | [Gyr] | |||
log(H/He) | ||||
log(C/He) | ||||
log(Ca/He) | ||||
log(Ca/H) | ||||
Parallax | [mas] | 1.06 (0.06) | 1.12 (0.03) | |
Distance | [pc] | 945.18 (49) | 894.13 (27) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 20.556 (0.08) | 20.725 (0.04) | |
Proper motion (declination) | [mas/yr] | -7.608 (0.06) | -7.683 (0.03) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 12.89 | |||
V magnitude | ||||
R magnitude | ||||
I magnitude | ||||
J magnitude | 14.29 (0.02) | 14.29 (0.02) | ||
H magnitude | 14.43 (0.04) | 14.43 (0.04) | ||
K magnitude | 14.43 (0.07) | 14.43 (0.07) | ||
u magnitude | ||||
g magnitude | ||||
r magnitude | ||||
i magnitude | ||||
z magnitude | ||||
G magnitude | 13.74 (0.0005) | 13.72 (0.003) | ||
BP magnitude | 13.55 (0.005) | |||
RP magnitude | 13.95 (0.001) | |||
Pan g magnitude | 13.58 (0.01) | |||
Pan r magnitude | 13.95 (0.001) | |||
Pan i magnitude | 14.28 (0.004) | |||
Pan z magnitude | 14.54 (0.003) | |||
Pan y magnitude | 14.71 (0.004) | |||
E(B-V) | 0.054 |
* 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.