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
Spectra without link are available upon request
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.