AB 28

All names: SDSS J125159.47+364033.56, Gaia DR2 1517078037739515136, CBS 359, AB 28, USNO-A2.0 1200-06965762, SDSS J125159.46+364033.5, SDSS J125159.49+364033.6, Gaia DR3 1517078037739515136, Gaia EDR3 1517078037739515136, SDSS J125159.47+364033.5, SDSS J125159.49+364033.7, USNO-B1.0 1266-00210557, GSC2 N12202015354

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 12 51 59.45 (0.06) 12 51 59.49 12 51 59.45 (0.1) 12 51 59.45 12 51 59.51 (0.06)
Declination 36 40 33.39 (0.06) 36 40 33.70 36 40 33.41 (0.09) 36 40 33.39 36 40 33.82 (0.06)
Spectral type DA DA DA DA DA
Effective temperature [K] 16657.0 18738.0 (67) 17346.0 (465)
log(g) [cgs] 7.84 7.99 (0.01) 7.91 (0.03)
Mass [M] 0.527 0.615 (0.005) 0.568 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.1035
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] 4.74 (0.1) 4.63 (0.1) 4.74 4.74 (0.1)
Distance [pc] 210.89 (5) 216.16 (7) 210.89 210.89 (5)
Composition H
Proper motion (right ascension) [mas/yr] -46.99308599 (0.06) -47.15865602 (0.2) -46.993 (0.06)
Proper motion (declination) [mas/yr] -26.66486129 (0.07) -26.80937393 (0.2) -26.665 (0.07)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.40
V magnitude 17.97
R magnitude 18.40
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.52 (0.01) 17.52 (0.02) 17.52 (0.01)
g magnitude 17.36 (0.005) 17.37 (0.02) 17.36 (0.005)
r magnitude 17.72 (0.006) 17.71 (0.02) 17.72 (0.006)
i magnitude 17.98 (0.008) 17.99 (0.02) 17.98 (0.008)
z magnitude 18.32 (0.02) 18.31 (0.03) 18.32 (0.03)
G magnitude 17.55 (0.005) 17.58 17.55 17.55 (0.003)
BP magnitude 17.50 (0.005) 17.49
RP magnitude 17.72 (0.01) 17.70
Pan g magnitude 17.41 (0.007)
Pan r magnitude 17.73 (0.005)
Pan i magnitude 18.01 (0.005)
Pan z magnitude 18.27 (0.008)
Pan y magnitude 18.43 (0.02)
E(B-V) 0.010

* 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.