SDSS J123507.82+210727.2

All names: SDSS J123507.82+210727.2, Gaia DR3 3949551801124462976, Gaia DR2 3949551801124462976, SDSS J123507.81+210727.1, Gaia EDR3 3949551801124462976, WDJ123507.86+210727.38, J1235+2107, SDSS J123507.81+210727.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 35 07.72 (0.1) 12 35 07.81 12 35 07.73 (0.2) 12 35 07.72 12 35 07.86 (0.1) 12 35 07.73 12 35 07.82
Declination 21 07 26.70 (0.1) 21 07 27.18 21 07 26.72 (0.1) 21 07 26.70 21 07 27.38 (0.1) 21 07 26.72 21 07 27.23
Spectral type DC DC DC DC DC DC DC DC
Effective temperature [K] 6314.0 (50) 6178.0 (46) 6564.0 6316.0 5651.0 (251) 6300.0 (4)
log(g) [cgs] 8.16 (0.02) 8.09 (0.02) 8.26 8.14 7.98 (0.05) 10.00 (0.003)
Mass [M] 0.672 (0.02) 0.627 (0.02) 0.755 0.66 0.556 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 2.7600 3.1380 2.8620
log(H/He)
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] 14.11 (0.2) 13.94 (0.2) 13.94 (0.2) 14.11 14.11 (0.2) 13.94 (0.2)
Distance [pc] 70.88 (0.8) 71.74 (1) 71.74 (1) 70.88 70.88 (0.8) 71.74 (1)
Composition He He
Proper motion (right ascension) [mas/yr] -119.7810101 (0.2) -119.9586261 (0.3) -119.781 (0.2) -119.9586261
Proper motion (declination) [mas/yr] -42.68739753 (0.2) -42.51068603 (0.2) -42.687 (0.2) -42.51068603
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.59 (0.04)
H magnitude
K magnitude
u magnitude 19.37 (0.03) 19.40 (0.03) 19.37 (0.03) 19.37 (0.03) 19.35 (0.04)
g magnitude 18.62 (0.008) 18.61 (0.008) 18.61 (0.008) 18.65 (0.02)
r magnitude 18.30 (0.007) 18.30 (0.007) 18.30 (0.007) 18.30 (0.01)
i magnitude 18.25 (0.008) 18.25 (0.008) 18.25 (0.008) 18.25 (0.01)
z magnitude 18.24 (0.02) 18.24 (0.02) 18.24 (0.02) 18.24 (0.02)
G magnitude 18.31 (0.02) 18.33 18.31 18.31 (0.003) 18.33
BP magnitude 18.57 (0.02) 18.55 18.55
RP magnitude 17.93 (0.01) 17.95 17.95
Pan g magnitude 18.57 (0.008) 18.57 (0.008)
Pan r magnitude 18.31 (0.005) 18.31 (0.005)
Pan i magnitude 18.27 (0.009) 18.27 (0.008)
Pan z magnitude 18.28 (0.007) 18.28 (0.007)
Pan y magnitude 18.33 (0.01) 18.33 (0.01)
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.