All names: Gaia EDR3 3650671868879156480, LBQS 1446-0022, Gaia DR2 3650671868879156480, Gaia DR3 3650671868879156480, SDSS J144840.19-003454.0, SDSS J144840.19-003454.1, SDSS J144840.18-003454.1, SDSS J144840.19-003454.08, USNO-B1.0 0894-00239947
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 14 48 40.19 (0.1) | 14 48 40.18 | 14 48 40.19 (0.2) | 14 48 40.18 (0.1) | ||||||
Declination | -00 34 54.18 (0.1) | -00 34 54.12 | -00 34 54.18 (0.2) | -00 34 54.16 (0.1) | ||||||
Spectral type | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 15228.0 | 21520.0 (165) | |||||||
log(g) | [cgs] | 7.92 | 8.05 (0.03) | |||||||
Mass | [M☉] | 0.567 | 0.6509999999999999 (0.01) | |||||||
log(Luminosity) | [L☉] | |||||||||
Cooling age | [Gyr] | 0.1646 | ||||||||
log(H/He) | ||||||||||
log(C/He) | ||||||||||
log(Ca/He) | ||||||||||
log(Ca/H) | ||||||||||
log(C/H) | ||||||||||
log(N/H) | ||||||||||
log(O/H) | ||||||||||
log(Na/H) | ||||||||||
log(Mg/H) | ||||||||||
log(Al/H) | ||||||||||
log(Si/H) | ||||||||||
log(P/H) | ||||||||||
log(S/H) | ||||||||||
log(Sc/H) | ||||||||||
log(Ti/H) | ||||||||||
log(Cr/H) | ||||||||||
log(Mn/H) | ||||||||||
log(Fe/H) | ||||||||||
log(Ni/H) | ||||||||||
Parallax | [mas] | 3.35 (0.2) | 3.79 (0.3) | 3.35 (0.2) | ||||||
Distance | [pc] | 298.90 (18) | 263.54 (19) | 298.90 (18) | ||||||
Composition | H | |||||||||
Proper motion (right ascension) | [mas/yr] | 4.436251171 (0.2) | 4.695432996 (0.4) | 4.436 (0.2) | ||||||
Proper motion (declination) | [mas/yr] | -1.509028912 (0.2) | -1.756041933 (0.4) | -1.509 (0.2) | ||||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | ||||||||||
B magnitude | 17.90 | |||||||||
V magnitude | ||||||||||
R magnitude | 18.70 | |||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | 18.19 (0.01) | 18.21 (0.03) | 18.19 (0.01) | |||||||
g magnitude | 18.09 (0.006) | 18.10 (0.01) | 18.09 (0.006) | |||||||
r magnitude | 18.44 (0.008) | 18.43 (0.02) | 18.44 (0.008) | |||||||
i magnitude | 18.68 (0.01) | 18.69 (0.02) | 18.68 (0.01) | |||||||
z magnitude | 19.03 (0.04) | 19.03 (0.04) | 19.03 (0.04) | |||||||
G magnitude | 18.26 (0.01) | 18.30 | 18.26 (0.003) | |||||||
BP magnitude | 18.21 (0.01) | 18.17 | ||||||||
RP magnitude | 18.46 (0.05) | 18.38 | ||||||||
Pan g magnitude | 18.13 (0.006) | |||||||||
Pan r magnitude | 18.42 (0.007) | |||||||||
Pan i magnitude | 18.73 (0.005) | |||||||||
Pan z magnitude | 18.92 (0.01) | |||||||||
Pan y magnitude | 19.09 (0.02) | |||||||||
E(B-V) | 0.044 |
* 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.