Gaia DR2 3952478391839564928

All names: LP 376-75, USNO-B1.0 1109-00209668, SDSS J122816.45+205639.7, J1228+2056, SDSS J122816.46+205639.8, Gaia DR2 3952478391839564928, WDJ122816.49+205640.68, Gaia EDR3 3952478391839564928, LSPM J1228+2056, Gaia DR3 3952478391839564928, NLTT 30833

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 Blouin & Xu 2022 Kilic et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 12 28 16.39 (0.08) 12 28 16.39 12 28 16.39 12 28 16.49 (0.08) 12 28 16.39
Declination 20 56 37.92 (0.07) 20 56 38.01 20 56 37.92 20 56 40.68 (0.07) 20 56 38.01
Spectral type DAZ DAZ DAZ DA DAZ
Effective temperature [K] 6048.0 (18) 6046.0 (17) 6024.0 (25) 6048.0 (18) 6005.0 5748.0 5975.0 (61)
log(g) [cgs] 8.04 (0.009) 8.03 (0.009) 8.03 (0.01) 8.04 (0.009) 8.02 7.86 8.00 (0.02)
Mass [M] 0.613 (0.007) 0.588 (0.008) 0.607 (0.009) 0.611 (0.008) 0.6 0.49 0.59 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 2.6200 2.4600 2.3300 2.3510
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) -9.11 -8.59 (0.07)
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] 19.03 (0.1) 18.99 (0.1) 19.03 (0.1) 18.99 (0.1) 19.03 19.03 (0.1) 18.99 (0.1)
Distance [pc] 52.55 (0.3) 52.66 (0.3) 52.55 (0.3) 52.67 (0.3) 52.55 52.55 (0.3) 52.67 (0.3)
Composition H H
Proper motion (right ascension) [mas/yr] -92.72491931 (0.1) -92.55685161 (0.2) -92.725 (0.1) -92.55685161
Proper motion (declination) [mas/yr] -172.3638273 (0.09) -172.4535333 (0.2) -172.364 (0.09) -172.4535333
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.80
V magnitude
R magnitude 17.00
I magnitude
J magnitude 16.74 (0.02)
H magnitude
K magnitude
u magnitude 18.88 (0.02) 18.88 (0.02) 18.88 (0.02)
g magnitude 18.03 (0.006) 18.03 (0.006)
r magnitude 17.66 (0.006) 17.66 (0.006)
i magnitude 17.51 (0.007) 17.51 (0.007)
z magnitude 17.50 (0.01) 17.50 (0.01)
G magnitude 17.66 (0.01) 17.67 17.66 17.66 (0.003) 17.67
BP magnitude 17.96 (0.01) 17.96 17.96
RP magnitude 17.20 (0.01) 17.18 17.18
Pan g magnitude 17.98 (0.003) 17.98 (0.003) 17.98 (0.003)
Pan r magnitude 17.65 (0.004) 17.65 (0.004) 17.66 (0.004)
Pan i magnitude 17.53 (0.002) 17.53 (0.003) 17.53 (0.002)
Pan z magnitude 17.52 (0.005) 17.52 (0.005) 17.52 (0.005)
Pan y magnitude 17.51 (0.007) 17.51 (0.007) 17.51 (0.007)
E(B-V) 0.002

* 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.