ULAS J124740.92+103555.8

All names: Gaia EDR3 3927307547022824832, SDSS J124740.93+103555.9, ULAS J124740.92+103555.8, Gaia DR3 3927307547022824832, SDSS J1247, SDSS J124740.93+103556.1, Gaia DR2 3927307547022824832, SDSS J124740.93+103556.0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Farihi et al. 2012 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 47 40.93 (0.2) 12 47 40.94 12 47 40.93 (0.3) 12 47 40.80 12 47 40.93 12 47 40.94 (0.2) 12 47 40.93
Declination 10 35 55.79 (0.1) 10 35 56.10 10 35 55.80 (0.2) 10 36 00.00 10 35 55.79 10 35 56.12 (0.1) 10 35 56.08
Spectral type DA DA DA DA DA DA
Effective temperature [K] 14698.0 18540.0 (150) 18020.0 (1125) 18408.0 (114)
log(g) [cgs] 7.67 7.86 (0.03) 7.95 (0.09) 7.93 (0.02)
Mass [M] 0.443 0.54 (0.02) 0.59 (0.07) 0.584 (0.009)
log(Luminosity) [L]
Cooling age [Gyr] 0.1265
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] 2.88 (0.2) 2.73 (0.3) 2.88 2.88 (0.2)
Distance [pc] 346.76 (25) 365.73 (45) 396.00 (9) 346.76 346.76 (25)
Composition H H
Proper motion (right ascension) [mas/yr] -4.395355803 (0.3) -4.64766937 (0.6) -4.395 (0.3)
Proper motion (declination) [mas/yr] -20.49049322 (0.2) -20.83609134 (0.3) -20.49 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.95 (0.08) 18.95 (0.08)
H magnitude 18.90 (0.1) 18.90 (0.1)
K magnitude 18.47 (0.2) 18.47 (0.2)
u magnitude 18.66 (0.02) 18.63 (0.02) 18.66 (0.02) 18.67 (0.02)
g magnitude 18.49 (0.008) 18.50 (0.01) 18.49 (0.008) 18.50 (0.01)
r magnitude 18.81 (0.01) 18.82 (0.02) 18.82 (0.01) 18.82 (0.02)
i magnitude 19.12 (0.02) 19.13 (0.02) 19.12 (0.02) 19.12 (0.02)
z magnitude 19.29 (0.06) 19.33 (0.06) 19.29 (0.06) 19.30 (0.06)
G magnitude 18.69 (0.01) 18.73 18.69 18.69 (0.003)
BP magnitude 18.66 (0.01) 18.65
RP magnitude 18.79 (0.03) 18.83
Pan g magnitude 18.56 (0.008)
Pan r magnitude 18.85 (0.005)
Pan i magnitude 19.14 (0.01)
Pan z magnitude 19.34 (0.02)
Pan y magnitude 19.51 (0.03)
E(B-V) 0.023

* 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.