All names: SDSS_J094822.01-000438.4, SDSS J094822.02-000438.4, SDSS J094822.02-000438.5, Gaia DR2 3834024740004295808, PSO J094822.016+000438.467
Parameter | Unit | MWDD H | Pan-STARRS DR1 | Gaia DR2 | Harris et al. 2003 | SDSS DR12 | Eisenstein et al. 2006 | Kleinman et al. 2013 | Kleinman et al. 2004 |
---|---|---|---|---|---|---|---|---|---|
Right ascension | 09 48 22.01 (1) | 09 48 22.02 | 09 48 22.02 | 09 48 22.02 | 09 48 22.02 | ||||
Declination | -00 04 38.50 (0.8) | -00 04 38.45 | -00 04 38.47 | -00 04 38.45 | -00 04 38.46 | ||||
Spectral type | DA4 | DA4 | DA | DA | |||||
Effective temperature | [K] | 13857.0 | 14027.0 (675) | 13556.0 (627) | 14082.0 (665) | ||||
log(g) | [cgs] | 7.91 | 7.55 (0.2) | 7.56 (0.2) | 7.57 (0.2) | ||||
Mass | [M☉] | 0.5579999999999999 | |||||||
log(Luminosity) | [L☉] | ||||||||
Cooling age | [Gyr] | 0.2189 | |||||||
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] | 1.75 (1) | |||||||
Distance | [pc] | 570.24 (448) | |||||||
Composition | H | ||||||||
Proper motion (right ascension) | [mas/yr] | -6.144091158 (1) | -0.5 | -2.0 | |||||
Proper motion (declination) | [mas/yr] | -1.570252483 (1) | -5.9 | -5.0 | |||||
Variability | |||||||||
Magnetic | |||||||||
Bd | [MG] | ||||||||
Infrared excess (disk) | |||||||||
Binarity | |||||||||
B magnitude | |||||||||
V magnitude | |||||||||
R magnitude | |||||||||
I magnitude | |||||||||
J magnitude | |||||||||
H magnitude | |||||||||
K magnitude | |||||||||
u magnitude | 20.48 | 20.45 (0.05) | 20.48 (0.05) | 20.47 (0.05) | 20.48 (0.05) | ||||
g magnitude | 20.06 | 20.04 (0.02) | 20.07 (0.02) | 20.06 (0.02) | 20.06 (0.02) | ||||
r magnitude | 20.33 | 20.30 (0.03) | 20.33 (0.03) | 20.33 (0.03) | 20.33 (0.03) | ||||
i magnitude | 20.55 | 20.50 (0.04) | 20.55 (0.05) | 20.56 (0.05) | 20.55 (0.05) | ||||
z magnitude | 21.09 | 21.08 (0.3) | 21.09 (0.3) | 21.09 (0.2) | 21.09 (0.2) | ||||
G magnitude | 20.30 | ||||||||
BP magnitude | 20.32 | ||||||||
RP magnitude | 20.30 | ||||||||
Pan g magnitude | 20.12 (0.01) | ||||||||
Pan r magnitude | 20.28 (0.02) | ||||||||
Pan i magnitude | 20.57 (0.03) | ||||||||
Pan z magnitude | 20.65 (0.06) | ||||||||
Pan y magnitude |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.