SDSS J124306.04+205709.2

All names: SDSS J124306.09+205708.8, PM J12430+2057, GALEX J124306.0+205710, 12430+2057, Gaia EDR3 3954556851068887040, SDSS J124306.09+205708.86, SDSS J124306.04+205709.2, Gaia DR2 3954556851068887040, Gaia DR3 3954556851068887040

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Limoges et al. 2015 Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 12 43 06.11 (0.07) 12 43 06.05 12 43 06.10 (0.09) 12 43 06.11 12 43 06.02 (0.07)
Declination 20 57 08.63 (0.04) 20 57 09.23 20 57 08.66 (0.07) 20 57 08.63 20 57 09.51 (0.04)
Spectral type DBA DB DBA DB DB DB
Effective temperature [K] 14614.0 13533.0 13199.0 14782.0 (31) 14470.0 (273) 15223.0 (51) 14223.0 (276)
log(g) [cgs] 7.94 7.93 7.91 8.00 (0) 7.97 (0.2) 8.33 (0.03) 8.01 (0.03)
Mass [M] 0.553 0.55 0.535 0.57 (0.1) 0.816 (0.02) 0.595 (0.02)
log(Luminosity) [L] -2.18
Cooling age [Gyr] 0.2562
log(H/He) -6.353 -5.61 (0.2)
log(C/He)
log(Ca/He) <-8.21
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 8.16 (0.09) 8.17 (0.1) 8.16 8.16 (0.09)
Distance [pc] 122.51 (1) 122.35 (2) 127.00 136.50 (3) 122.51 122.51 (1)
Composition He He
Proper motion (right ascension) [mas/yr] 76.20482195 (0.1) 76.21585448 (0.2) 76.0 76.205 (0.1)
Proper motion (declination) [mas/yr] -54.5860412 (0.1) -54.51686532 (0.1) -44.0 -54.586 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.71 (0.008) 16.72 16.71 (0.02) 16.70 (0.008)
g magnitude 16.75 (0.005) 16.74 16.80 (0.02) 16.75 (0.005)
r magnitude 17.00 (0.005) 17.02 17.00 (0.01) 17.00 (0.005)
i magnitude 17.24 (0.006) 17.25 17.24 (0.02) 17.24 (0.006)
z magnitude 17.44 (0.01) 17.43 17.44 (0.02) 17.44 (0.01)
G magnitude 16.86 (0.005) 16.89 16.86 16.86 (0.003)
BP magnitude 16.82 (0.005) 16.80
RP magnitude 16.92 (0.007) 16.92
Pan g magnitude 16.80 (0.003)
Pan r magnitude 17.02 (0.003)
Pan i magnitude 17.25 (0.003)
Pan z magnitude 17.45 (0.005)
Pan y magnitude 17.59 (0.01)
E(B-V) 0.008

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.