All names: SDSS J003938.32-001938.38, SDSS J003938.32-001938.3, Gaia EDR3 2542964064817336064, Gaia DR2 2542964064817336064, Gaia DR3 2542964064817336064
Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
---|---|---|---|---|---|---|---|
Right ascension | 00 39 38.33 (0.4) | 00 39 38.33 | 00 39 38.33 (0.4) | 00 39 38.33 (0.4) | |||
Declination | -00 19 38.38 (0.2) | -00 19 38.40 | -00 19 38.38 (0.4) | -00 19 38.38 (0.2) | |||
Spectral type | sdA | sdA | |||||
Effective temperature | [K] | 6638.0 (56) | |||||
log(g) | [cgs] | 5.61 (0.2) | |||||
Mass | [M☉] | 0.14502 (0.0005) | |||||
log(Luminosity) | [L☉] | ||||||
Cooling age | [Gyr] | ||||||
log(H/He) | |||||||
log(C/He) | |||||||
log(Ca/He) | |||||||
log(Ca/H) | |||||||
Parallax | [mas] | -0.42 (0.4) | 0.32 (0.5) | 0.32 (0.5) | |||
Distance | [pc] | 3110.64 (5021) | 3110.42 (5020) | ||||
Composition | |||||||
Proper motion (right ascension) | [mas/yr] | -0.017235058 (0.5) | 0.991680473 (1) | -0.017 (0.5) | |||
Proper motion (declination) | [mas/yr] | -0.21139411 (0.4) | 0.281874031 (0.7) | -0.211 (0.4) | |||
Variability | |||||||
Magnetic | |||||||
Bd | [MG] | ||||||
Infrared excess (disk) | |||||||
Binarity | |||||||
B magnitude | |||||||
V magnitude | |||||||
R magnitude | |||||||
I magnitude | |||||||
J magnitude | |||||||
H magnitude | |||||||
K magnitude | |||||||
u magnitude | 21.18 (0.08) | 21.18 (0.09) | 21.18 (0.09) | ||||
g magnitude | 20.24 (0.02) | 20.20 (0.06) | 20.20 (0.06) | ||||
r magnitude | 19.93 (0.02) | 19.91 (0.08) | 19.91 (0.08) | ||||
i magnitude | 19.91 (0.02) | 19.90 (0.1) | 19.90 (0.1) | ||||
z magnitude | 20.20 (0.1) | 20.11 (0.1) | 20.11 (0.1) | ||||
G magnitude | 19.82 (0.08) | 19.85 | 19.82 (0.004) | ||||
BP magnitude | 20.21 (0.08) | 19.78 | |||||
RP magnitude | 19.30 (0.06) | 19.01 | |||||
Pan g magnitude | |||||||
Pan r magnitude | |||||||
Pan i magnitude | |||||||
Pan z magnitude | |||||||
Pan y magnitude | |||||||
E(B-V) | 0.025 |
* 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.