Gaia DR2 4403922924014755456

All names: SDSS J153930.78-014350.4, Gaia DR2 4403922924014755456, Gaia DR3 4403922924014755456, Gaia EDR3 4403922924014755456, SDSS J153930.79-014350.5, WDJ153930.79-014350.44

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 15 39 30.74 (0.06) 15 39 30.75 15 39 30.74 15 39 30.79 (0.06) 15 39 30.75
Declination -01 43 51.32 (0.05) -01 43 51.29 -01 43 51.32 -01 43 50.45 (0.05) -01 43 51.29
Spectral type DC DC D
Effective temperature [K] 9338.0 (70) 9792.0 9626.0 8891.0 (141)
log(g) [cgs] 8.20 (0.01) 8.40 8.33 8.14 (0.03)
Mass [M] 0.705 (0.01) 0.853 0.788 0.666 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.2090 1.1020
log(H/He) -4.4
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 15.51 (0.07) 15.36 (0.09) 15.51 15.51 (0.07) 15.36 (0.09)
Distance [pc] 64.47 (0.3) 65.11 (0.4) 64.47 64.47 (0.3) 65.11 (0.4)
Composition
Proper motion (right ascension) [mas/yr] -45.19257406 (0.08) -45.23217114 (0.2) -45.193 (0.09) -45.23217114
Proper motion (declination) [mas/yr] -54.5072518 (0.06) -54.53573739 (0.1) -54.507 (0.06) -54.53573739
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.09 (0.008) 17.09 (0.008)
g magnitude 16.89 (0.004) 16.89 (0.004)
r magnitude 17.00 (0.005) 17.00 (0.005)
i magnitude 17.12 (0.006) 17.12 (0.006)
z magnitude 17.26 (0.01) 17.26 (0.01)
G magnitude 16.91 (0.008) 16.94 16.91 16.91 (0.003) 16.94
BP magnitude 16.97 (0.008) 16.95 16.95
RP magnitude 16.82 (0.006) 16.82 16.82
Pan g magnitude 16.95 (0.005)
Pan r magnitude 17.02 (0.003)
Pan i magnitude 17.15 (0.005)
Pan z magnitude 17.29 (0.008)
Pan y magnitude 17.40 (0.007)
E(B-V) 0.003

* 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.