SDSS J073904.05+393051.9

All names: Gaia EDR3 923332863865099008, SDSS J073904.06+393051.9, SDSS J073904.06+393052.0, Gaia DR3 923332863865099008, SDSS J073904.05+393051.9, GALEX J073904.1+393052, SDSS J073904.06+393051.98, Gaia DR2 923332863865099008, SDSSJ073904.06+393051.9

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 SDSS DR10 Geier 2020 MWDD H MWDD HE Gaia DR2 Kepler et al. 2015 Simbad Eisenstein et al. 2006
Right ascension 07 39 04.06 (0.2) 07 39 04.06 07 39 04.06 07 39 04.06 07 39 04.06 (0.3) 07 39 04.06 (0.2) 07 39 04.06
Declination 39 30 51.91 (0.2) 39 30 52.02 39 30 52.02 39 30 51.90 39 30 51.91 (0.2) 39 30 52.00 (0.2) 39 30 51.94
Spectral type sdB sdB sdB sdB sdB SDB
Effective temperature [K] 18151.0 22263.0 27692.0 (350) 27214.0 (456)
log(g) [cgs] 5.70 5.68 5.01 (0.02) 5.03 (0.04)
Mass [M] 0.131 0.105
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] -0.47 (0.3) -0.39 (0.4) -0.39 (0.4)
Distance [pc]
Composition
Proper motion (right ascension) [mas/yr] -4.516966452 (0.3) -4.416 (0.5) -4.415502817 (0.5) -4.517 (0.3) -1.9
Proper motion (declination) [mas/yr] -5.350284524 (0.2) -5.278 (0.3) -5.278379843 (0.3) -5.35 (0.2) -4.2
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.70 (0.02) 18.70 (0.02) 18.70 (0.02) 18.70 (0.02) 18.70 (0.02) 18.70 (0.02)
g magnitude 18.71 (0.008) 18.71 (0.008) 18.71 (0.008) 18.71 (0.01) 18.71 (0.008) 18.71 (0.01)
r magnitude 19.12 (0.01) 19.12 (0.01) 19.12 (0.01) 19.13 (0.02) 19.13 (0.01) 19.14 (0.01)
i magnitude 19.46 (0.02) 19.46 (0.02) 19.46 (0.02) 19.46 (0.02) 19.46 (0.02) 19.47 (0.02)
z magnitude 19.82 (0.09) 19.82 (0.09) 19.82 (0.09) 19.80 (0.08) 19.82 (0.09) 19.80 (0.09)
G magnitude 18.94 (0.02) 18.98 (0.003) 18.98 18.94 (0.004)
BP magnitude 18.85 (0.02) 18.81 (0.03) 18.81
RP magnitude 19.21 (0.06) 19.21 (0.04) 19.21
Pan g magnitude 18.78 (0.007) 18.78 (0.007)
Pan r magnitude 19.14 (0.005) 19.14 (0.005)
Pan i magnitude 19.46 (0.008) 19.46 (0.008)
Pan z magnitude 19.71 (0.02) 19.71 (0.02)
Pan y magnitude 19.86 (0.05) 19.86 (0.05)
E(B-V)

* Constant surface field

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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.