WD 0118-009

All names: J0121-0038, SDSS J012103.00-003833.6, ULAS J012103.02-003833.4, SDSS J012103.01-003833.6, Gaia DR2 2533742048478056448, SDSS J012102.99-003833.6, ULAS J0121-00, WD 0118-009, WDJ012102.97-003833.77, Gaia EDR3 2533742048478056448, Gaia DR3 2533742048478056448

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Leggett et al. 2011 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 01 21 03.10 (0.4) 01 21 03.10 (0.6) 01 21 03.10 01 21 02.97 (0.4) 01 21 03.10 01 21 02.45
Declination -00 38 33.06 (0.3) -00 38 33.08 (0.3) -00 38 33.06 -00 38 33.77 (0.3) -00 38 33.08 -00 38 29.76
Spectral type DC DC DC DC DC DA: DC DA13.4
Effective temperature [K] 4380.0 (58) 4389.0 (57) 4383.0 4081.0 4480.0 (230) 4444.0 (155)
log(g) [cgs] 7.91 (0.05) 7.89 (0.06) 7.89 7.61 7.91 (0.09)
Mass [M] 0.521 (0.04) 0.512 (0.05) 0.51 0.362 0.522 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 7.2700 6.8010 4.5570 7.3000
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] 13.17 (0.5) 13.01 (0.6) 13.01 (0.6) 13.17 13.17 (0.5) 13.01 (0.6)
Distance [pc] 75.92 (3) 76.86 (3) 76.86 (3) 81.00 (19) 75.92 75.92 (3) 76.86 (3)
Composition H H
Proper motion (right ascension) [mas/yr] 117.9469175 (0.7) 119.281107 (2) 117.947 (0.7) 119.281107
Proper motion (declination) [mas/yr] 44.29620669 (0.5) 44.41262274 (0.6) 44.296 (0.5) 44.41262274
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.23 (0.08) 18.23 (0.08)
H magnitude 18.05 (0.09) 18.05 (0.09)
K magnitude 18.10 (0.2) 18.10 (0.2)
u magnitude 22.35 (0.3) 22.98 (0.7) 22.49 (0.6) 20.74
g magnitude 20.67 (0.03) 21.00 (0.07) 20.74
r magnitude 19.70 (0.02) 19.76 (0.03)
i magnitude 19.34 (0.02) 19.40 (0.03)
z magnitude 19.12 (0.05) 19.42 (0.1)
G magnitude 19.78 (0.05) 19.82 19.78 19.78 (0.005) 19.82
BP magnitude 20.34 (0.05) 20.55 20.55
RP magnitude 19.01 (0.03) 18.98 18.98
Pan g magnitude 20.57 (0.02) 20.57 (0.02)
Pan r magnitude 19.75 (0.01) 19.75 (0.01)
Pan i magnitude 19.37 (0.008) 19.37 (0.008)
Pan z magnitude 19.24 (0.02) 19.24 (0.02)
Pan y magnitude 19.13 (0.04) 19.13 (0.04)
E(B-V) 0.003

* 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.