All names: CNS5 5018, LHS 3532, G24-9, WDJ201355.68+064244.83, GJ 784.2 B, LTT 15921, WD 2011+06, PM 20115+0634, G 24-9, WD 2011+065, USNO-B1.0 0967-00554427, Gaia DR3 4249667902270614272, PM J20139+0642, TIC 273425796, UCAC2 34190499, GEN# +9.80024009, Gaia EDR3 4249667902270614272, 20139+0642, NLTT 48903, UBV 17473, WD 2011+066, EGGR 138, 2MASS J20135567+0642447, Gaia DR2 4249667902270614272, USNO 459, WDS J20139+0641B, WD 2011+063, CSI+06-20115 2, V* V1412 Aql, J2013+0642, LSPM J2013+0642, PSO J303.4811+06.7104
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | Gaia DR2 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Sion et al. 2014 | Bergeron et al. 2001 | Bergeron et al. 1997 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 13 55.41 (0.03) | 20 13 55.41 (0.04) | 20 13 55.41 (0.04) | 20 13 55.44 | 20 13 55.41 | 20 13 55.68 (0.03) | 20 13 55.41 | 20 13 56.28 | ||||||||||
| Declination | 06 42 35.51 (0.03) | 06 42 35.80 (0.03) | 06 42 35.80 (0.03) | 06 42 43.20 | 06 42 35.51 | 06 42 44.83 (0.03) | 06 42 35.80 | 06 43 08.40 | ||||||||||
| Spectral type | DC | DC | DC | DC | DQ | DC | DQ7 | DC | DC | DC7 | DQ7 | |||||||
| Effective temperature | [K] | 6646.0 (46) | 6277.0 (14) | 6629.8 (30) | 6455.0 (115) | 6401.0 (150) | 6620.0 (133) | 6400.0 | 6400.0 (150) | 6490.0 (150) | 6133.0 (37) | |||||||
| log(g) | [cgs] | 8.15 (0.02) | 7.95 (0.005) | 8.15 (0.01) | 8.10 (0.04) | 8.11 (0.06) | 8.19 (0.06) | 8.13 (0.06) | 8.18 (0.07) | 7.98 (0.009) | ||||||||
| Mass | [M☉] | 0.667 (0.01) | 0.543 (0.004) | 0.633 (0.03) | 0.66 (0.04) | 0.7 (0.04) | 0.65 (0.04) | 0.69 (0.04) | 0.562 (0.007) | |||||||||
| log(Luminosity) | [L☉] | -3.68 | -3.69 (0.03) | -3.70 (0.04) | ||||||||||||||
| Cooling age | [Gyr] | 2.0200 | 2.3590 (0.2) | 2.4900 | 2.7300 (0.4) | 3.3500 (0.4) | ||||||||||||
| log(H/He) | -3.2 | |||||||||||||||||
| 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] | 43.57 (0.04) | 43.57 (0.04) | 43.62 (0.05) | 43.62 (0.05) | 43.62 (0.05) | 43.62 (0.05) | 44.70 (3) | 44.70 (2) | 44.70 (2) | 44.70 (2) | 43.57 | 43.57 (0.04) | 43.62 (0.05) | 39.00 (5) | |||
| Distance | [pc] | 22.95 (0.02) | 22.95 (0.02) | 22.93 (0.03) | 22.93 (0.02) | 22.93 (0.03) | 22.93 (0.02) | 24.96 (0.8) | 22.40 (2) | 22.37 | 22.37 (1) | 22.37 (1) | 22.95 | 22.95 (0.02) | 22.93 (0.02) | 25.64 (3) | ||
| Composition | He | He | He | H | He | He | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -254.8392316 (0.04) | -254.9552629 (0.09) | -254.839 (0.04) | -254.9552629 | |||||||||||||
| Proper motion (declination) | [mas/yr] | -582.3892989 (0.03) | -582.2793095 (0.06) | -582.389 (0.03) | -582.2793095 | |||||||||||||
| Variability | ||||||||||||||||||
| Magnetic | ||||||||||||||||||
| Bd | [MG] | |||||||||||||||||
| Infrared excess (disk) | ||||||||||||||||||
| Binarity | WDMS | |||||||||||||||||
| B magnitude | 16.16 | 16.16 | 16.18 | |||||||||||||||
| V magnitude | 15.75 | 15.78 | 15.78 | 15.75 | ||||||||||||||
| R magnitude | 15.51 | 15.51 | 15.48 | |||||||||||||||
| I magnitude | 15.25 | 15.25 | 15.25 | |||||||||||||||
| J magnitude | 14.97 (0.03) | 15.02 (0.05) | 14.94 | 14.97 | 15.02 (0.05) | |||||||||||||
| H magnitude | 14.83 (0.03) | 14.79 | 14.83 | |||||||||||||||
| K magnitude | 14.76 (0.03) | 14.75 | 14.76 | |||||||||||||||
| u magnitude | 16.47 (0.006) | 16.48 (0.006) | ||||||||||||||||
| g magnitude | 15.90 (0.002) | 15.87 (0.003) | ||||||||||||||||
| r magnitude | 15.69 (0.006) | 15.67 (0.003) | ||||||||||||||||
| i magnitude | 15.65 (0.003) | 15.62 (0.003) | ||||||||||||||||
| z magnitude | 15.68 (0.005) | 15.65 (0.006) | ||||||||||||||||
| G magnitude | 15.66 (0.002) | 15.68 | 15.68 | 15.66 | 15.66 (0.003) | 15.68 | ||||||||||||
| BP magnitude | 15.87 (0.002) | 15.87 | 15.87 | |||||||||||||||
| RP magnitude | 15.30 (0.002) | 15.31 | 15.31 | |||||||||||||||
| Pan g magnitude | 15.89 (0.003) | 15.90 (0.002) | 15.90 (0.001) | |||||||||||||||
| Pan r magnitude | 15.68 (0.001) | 15.69 (0.006) | 15.69 (0.006) | |||||||||||||||
| Pan i magnitude | 15.66 (4e-05) | 15.65 (0.003) | 15.65 (0.003) | |||||||||||||||
| Pan z magnitude | 15.70 (0.004) | 15.68 (0.005) | 15.68 (0.005) | |||||||||||||||
| Pan y magnitude | 15.72 (0.004) | 15.73 (0.004) | 15.73 (0.004) | |||||||||||||||
| E(B-V) | 0.001 | |||||||||||||||||
* 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.