SDSS J122437.07+283853.0

All names: SDSS J122437.07+283852.9, Gaia DR3 4010119017615780608, SDSS J122437.06+283852.9, SDSS J122437.07+283853.0, Gaia EDR3 4010119017615780608, SDSS J122437.06+283853.0, WDJ122437.04+283853.36, J1224+2838, Gaia DR2 4010119017615780608

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR14 Kilic et al. 2025 Caron et al. 2023 Blouin 2020 Coutu et al. 2019 MWDD H MWDD HE Gaia DR2 Hollands et al. 2017 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 12 24 37.12 (0.2) 12 24 37.07 12 24 37.07 12 24 37.12 (0.3) 12 24 37.12 12 24 37.04 (0.2) 12 24 37.12
Declination 28 38 52.38 (0.2) 28 38 52.98 28 38 52.98 28 38 52.41 (0.2) 28 38 52.38 28 38 53.36 (0.2) 28 38 52.41
Spectral type DZ DZ DZ DZ DZ DZ DZ DC DZ
Effective temperature [K] 4969.0 (39) 5006.0 (33) 4991.0 (122) 5096.0 (84) 5662.0 5398.0 5210.0 (110) 4977.0 (110)
log(g) [cgs] 8.00 (0.03) 8.00 (0.04) 8.01 (0.07) 8.07 8.29 8.14 7.97 (0.07)
Mass [M] 0.567 (0.03) 0.57 (0.03) 0.576 (0.05) 0.6103 0.774 0.657 0.552 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 5.8400 5.8200 5.1760 5.3560 5.8000
log(H/He) -3.0 -3.0 <-3.0025
log(C/He)
log(Ca/He) -10.12 -9.75 -10.2 (0.1) -10.0475 (0.1) -10.0
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He) -9.0 (0.5) -8.69
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) -9.1 (0.5) -8.89
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 12.35 (0.3) 12.24 (0.4) 12.24 12.24 (0.4) 12.35 12.35 (0.3) 12.24 (0.4)
Distance [pc] 80.95 (2) 81.70 (2) 81.64 (2) 81.70 (2) 81.70 (2) 85.00 (11) 80.95 80.95 (2) 81.70 (2)
Composition He He He He
Proper motion (right ascension) [mas/yr] 69.67308675 (0.3) 69.25361023 (0.6) 69.673 (0.3) 69.254
Proper motion (declination) [mas/yr] -61.38009718 (0.3) -61.26076298 (0.4) -61.38 (0.3) -61.261
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.27 (0.04)
H magnitude 18.19 (0.1)
K magnitude 18.08 (0.1)
u magnitude 22.44 (0.3) 22.44 (0.3) 22.40 (0.3) 22.40 (0.3) 22.45 (0.3) 22.45 (0.3)
g magnitude 19.77 (0.01) 19.77 (0.02) 19.77 (0.02) 19.77 (0.01) 19.77 (0.01)
r magnitude 19.22 (0.01) 19.22 (0.03) 19.22 (0.03) 19.23 (0.01) 19.23 (0.01)
i magnitude 19.06 (0.02) 19.08 (0.03) 19.08 (0.03) 19.07 (0.01) 19.07 (0.01)
z magnitude 19.01 (0.05) 19.01 (0.05) 19.01 (0.05) 19.02 (0.05) 19.02 (0.05)
G magnitude 19.27 (0.05) 19.30 19.27 19.27 (0.004) 19.30
BP magnitude 19.78 (0.05) 19.76 19.76
RP magnitude 18.79 (0.03) 18.85 18.85
Pan g magnitude 19.67 (0.01) 19.67 (0.01)
Pan r magnitude 19.20 (0.008) 19.20 (0.008)
Pan i magnitude 19.07 (0.01) 19.07 (0.01)
Pan z magnitude 19.08 (0.01) 19.08 (0.01)
Pan y magnitude 19.04 (0.02) 19.04 (0.02)
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.