LB 6499

All names: Gaia DR3 4011844361812822272, KUV 12290+3043, SDSS J123130.28+302620.6, LB 6499, [VV2010] J123130.5+302619, [VV98] J123130.5+302619, [VV2003] J123130.5+302619, [VV2000] J123130.5+302619, GALEX J123130.2+302621, Gaia DR2 4011844361812822272, Gaia EDR3 4011844361812822272, SDSS J123130.21+302621.23, SDSS J123130.21+302621.2, [VV2006] J123130.5+302619

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 12 31 30.18 (0.1) 12 31 30.29 12 31 30.19 (0.1) 12 31 30.18 12 31 30.33 (0.1)
Declination 30 26 21.35 (0.06) 30 26 20.65 30 26 21.32 (0.09) 30 26 21.35 30 26 20.37 (0.06)
Spectral type DB DB DB DB DB
Effective temperature [K] 11532.0 11123.0 10913.0 11057.0 (307) 10673.0 (248)
log(g) [cgs] 7.98 8.01 7.97 8.21 (0.3) 7.93 (0.04)
Mass [M] 0.572 0.588 0.567 0.54 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.4774
log(H/He) -5.975
log(C/He)
log(Ca/He)
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] 5.96 (0.2) 5.97 (0.2) 5.96 5.96 (0.2)
Distance [pc] 167.91 (4) 167.56 (5) 167.91 167.91 (4)
Composition He
Proper motion (right ascension) [mas/yr] -117.2512895 (0.2) -117.2564023 (0.3) -117.251 (0.2)
Proper motion (declination) [mas/yr] 61.53075051 (0.1) 61.56365281 (0.2) 61.531 (0.1)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.21
V magnitude 18.15
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.18 (0.01) 18.18 (0.02) 18.18 (0.01)
g magnitude 18.07 (0.006) 18.11 (0.02) 18.08 (0.006)
r magnitude 18.24 (0.008) 18.25 (0.02) 18.25 (0.008)
i magnitude 18.40 (0.01) 18.39 (0.02) 18.40 (0.01)
z magnitude 18.60 (0.04) 18.62 (0.03) 18.61 (0.04)
G magnitude 18.11 (0.009) 18.14 18.11 18.11 (0.003)
BP magnitude 18.13 (0.009) 18.12
RP magnitude 18.07 (0.02) 18.10
Pan g magnitude 18.09 (0.005)
Pan r magnitude 18.22 (0.006)
Pan i magnitude 18.40 (0.008)
Pan z magnitude 18.56 (0.01)
Pan y magnitude 18.68 (0.04)
E(B-V) 0.006

* 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.