All names: UCAC4 570-034113, GALEX J064918.3+235440, WISE J064918.42+235440.7, LAMOST J064918.43+235440.6, Gaia DR3 3381156177066288768, 2MASS J06491844+2354405, Gaia DR2 3381156177066288768, LAMOSTJ064918.43+235440.6
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 06 49 18.44 | 06 49 18.44 (0.04) | ||
Declination | 23 54 40.61 | 23 54 40.56 (0.04) | ||
Spectral type | He-sdB | sdB/sdO | ||
Effective temperature | [K] | 24888.0 (127) | ||
log(g) | [cgs] | 4.89 (0) | ||
Mass | [M☉] | |||
log(Luminosity) | [L☉] | |||
Cooling age | [Gyr] | |||
log(H/He) | ||||
log(C/He) | ||||
log(Ca/He) | ||||
log(Ca/H) | ||||
Parallax | [mas] | 0.56 (0.09) | 0.37 (0.05) | |
Distance | [pc] | 1789.23 (288) | 2689.62 (394) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 1.514 (0.1) | 1.237 (0.05) | |
Proper motion (declination) | [mas/yr] | -0.202 (0.09) | -0.277 (0.04) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 15.28 (0.1) | |||
V magnitude | 15.39 (0.1) | |||
R magnitude | 15.37 (0.1) | |||
I magnitude | ||||
J magnitude | 15.44 (0.04) | 15.44 (0.04) | ||
H magnitude | 15.65 (0.1) | 15.65 (0.1) | ||
K magnitude | 15.49 (0.2) | 15.49 (0.2) | ||
u magnitude | ||||
g magnitude | 15.22 (0.02) | |||
r magnitude | 15.44 (0.1) | |||
i magnitude | ||||
z magnitude | ||||
G magnitude | 15.33 (0.0009) | 15.31 (0.003) | ||
BP magnitude | 15.22 (0.01) | |||
RP magnitude | 15.38 (0.004) | |||
Pan g magnitude | 15.24 (0.01) | |||
Pan r magnitude | 15.48 (0.003) | |||
Pan i magnitude | 15.72 (0.001) | |||
Pan z magnitude | 15.92 (0.002) | |||
Pan y magnitude | 16.03 (0.008) | |||
E(B-V) | 0.105 |
* 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.