PB 3864

All names: GALEX J121015.8+184804, Gaia DR3 3950162854711662080, Gaia DR2 3950162854711662080, Gaia EDR3 3950162854711662080, SDSS J121015.82+184804.6, PB 3864, SDSS J121015.82+184804.7, SDSS J121015.83+184804.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Gaia DR2 Stilism Simbad Kleinman et al. 2013
Right ascension 12 10 15.81 (0.2) 12 10 15.83 12 10 15.81 (0.3) 12 10 15.83 (0.2) 12 10 15.83
Declination 18 48 04.50 (0.2) 18 48 04.69 18 48 04.51 (0.2) 18 48 04.66 (0.2) 18 48 04.71
Spectral type DA DA
Effective temperature [K] 25075.0 (362)
log(g) [cgs] 7.84 (0.05)
Mass [M]
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.60 (0.2) 0.77 (0.3) 0.60 (0.2)
Distance [pc] 1669.59 (680) 1302.59 (584) 1669.73 (681)
Composition
Proper motion (right ascension) [mas/yr] -13.34141199 (0.3) -11.802 (0.6) -13.341 (0.3)
Proper motion (declination) [mas/yr] -9.437217307 (0.2) -9.328 (0.4) -9.437 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.00
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.42 (0.02) 18.42 (0.02) 18.45 (0.02)
g magnitude 18.53 (0.008) 18.53 (0.008) 18.59 (0.03)
r magnitude 18.91 (0.01) 18.91 (0.01) 18.91 (0.01)
i magnitude 19.23 (0.02) 19.23 (0.02) 19.23 (0.02)
z magnitude 19.49 (0.06) 19.49 (0.06) 19.46 (0.06)
G magnitude 18.76 (0.02) 18.77 18.76 (0.005)
BP magnitude 18.63 (0.02) 18.61
RP magnitude 18.83 (0.05) 18.94
Pan g magnitude 18.54 (0.01)
Pan r magnitude 18.90 (0.007)
Pan i magnitude 19.22 (0.007)
Pan z magnitude 19.50 (0.04)
Pan y magnitude 19.68 (0.06)
E(B-V) 0.021

* 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.