Gaia DR2 4439766762564880512

All names: Gaia DR2 4439766762564880512, SDSS J162251.31+071344.0, J1622+0713, Gaia DR3 4439766762564880512, SDSS J162251.32+071344.0, WDJ162251.33+071344.41, WDJ162251.33+071344.40, Gaia EDR3 4439766762564880512

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 16 22 51.28 (0.1) 16 22 51.29 16 22 51.28 16 22 51.33 (0.1) 16 22 51.29
Declination 07 13 42.49 (0.07) 07 13 42.55 07 13 42.49 07 13 44.40 (0.07) 07 13 42.55
Spectral type DA DA DA DA DA
Effective temperature [K] 8374.0 (122) 8398.0 (109) 8373.0 (122) 8381.0 8147.0 8700.0 (156)
log(g) [cgs] 8.08 (0.03) 8.09 (0.02) 8.09 (0.03) 8.09 8.01 8.16 (0.03)
Mass [M] 0.644 (0.02) 0.651 (0.02) 0.647 (0.02) 0.65 0.58 0.695 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 1.1200 1.0860 1.0710
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] 10.75 (0.1) 10.79 (0.2) 10.79 (0.2) 10.75 10.75 (0.1) 10.79 (0.2)
Distance [pc] 93.03 (1) 92.68 (1) 92.70 (1) 93.03 93.02 (1) 92.70 (1)
Composition H H
Proper motion (right ascension) [mas/yr] -40.42297651 (0.1) -39.77455605 (0.2) -40.423 (0.1) -39.77455605
Proper motion (declination) [mas/yr] -119.6068744 (0.09) -119.638759 (0.1) -119.607 (0.09) -119.638759
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.24 (0.02) 18.28 (0.01) 18.28 (0.01)
g magnitude 17.93 (0.006) 17.93 (0.006)
r magnitude 17.91 (0.007) 17.91 (0.007)
i magnitude 18.00 (0.009) 18.00 (0.009)
z magnitude 18.12 (0.02) 18.12 (0.02)
G magnitude 17.75 (0.01) 17.77 17.75 17.75 (0.003) 17.77
BP magnitude 17.83 (0.01) 17.82 17.82
RP magnitude 17.53 (0.01) 17.52 17.52
Pan g magnitude 17.82 (0.01) 17.82 (0.01)
Pan r magnitude 17.80 (0.01) 17.80 (0.01)
Pan i magnitude 17.88 (0.004) 17.88 (0.004)
Pan z magnitude 17.98 (0.01) 17.98 (0.02)
Pan y magnitude 18.00 (0.02) 18.00 (0.02)
E(B-V) 0.007

* 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.