All names: JP11 5176, LAWD 82, GEN# +9.80186031, LTT 16005, Gaia EDR3 1831553382794173824, WD 2032+248, CSI+24-20322, UCAC2 40760534, GJ 794, USNO-B1.0 1150-00493091, HIC 101516, ASCC 721622, CNS5 5079, GCRV 12872, EGGR 139, Gaia DR3 1831553382794173824, WEB 18346, Gaia DR2 1831553382794173824, LSPM J2034+2503, HD 340611, G186-31, LHS 3562, NLTT 49494, PM J20343+2503, TIC 298186852, TYC 2161-1038-1, WDJ203421.89+250349.75, USNO 188, GEN# +1.00340611, G 186-31, GEN# +6.10010794, PLX 4895.00, uvby98 980186031, UBV M 42988, AC +25 68981, WD 2032+24, PLX 4895, LFT 1554, 20343+2503, HIP 101516, UBV 17851, 2MASS J20342188+2503498, WISEA J203421.56+250343.8, PM 20322+2454, Ci 20 1215, Wolf 1346
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | McCleery et al. 2020 | Gaia DR2 | Bedard et al. 2017 | Tremblay et al. 2017 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Sion et al. 2014 | Giammichele et al. 2012 | Gianninas et al. 2011 | Holberg et al. 2008 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 34 21.41 (0.03) | 20 34 21.42 (0.04) | 20 34 21.42 (0.04) | 20 34 21.84 | 20 34 21.41 | 20 34 21.88 (0.03) | 20 34 21.42 | 20 34 22.37 | |||||||||||
| Declination | 25 03 40.74 (0.03) | 25 03 41.02 (0.05) | 25 03 41.02 (0.05) | 25 03 46.80 | 25 03 40.74 | 25 03 49.75 (0.03) | 25 03 41.02 | 25 04 09.48 | |||||||||||
| Spectral type | DAZ | DA | DA | DA | DA | DA | DA2.4 | DA | DA | DA | DA | DA2.4 | DA3 | ||||||
| Effective temperature | [K] | 20145.0 (402) | 20295.1 (180) | 20851.0 (303) | 20700.0 (320) | 20704.0 (332) | 20500.0 (307) | 19983.0 | 20704.0 (322) | 20700.0 (322) | 21608.0 (153) | ||||||||
| log(g) | [cgs] | 7.93 (0.02) | 7.95 (0.01) | 7.97 (0.04) | 8.02 (0.05) | 8.02 (0.05) | 8.03 (0.05) | 8.03 (0.05) | 8.02 (0.05) | 8.02 (0.006) | |||||||||
| Mass | [M☉] | 0.587 (0.01) | 0.66 (0.09) | 0.64 (0.03) | 0.64 (0.03) | 0.64 (0.03) | 0.64 (0.03) | 0.636 (0.005) | |||||||||||
| log(Luminosity) | [L☉] | -1.58 | -1.56 | ||||||||||||||||
| Cooling age | [Gyr] | 0.0700 | 0.0600 | ||||||||||||||||
| 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] | 67.41 (0.04) | 67.41 (0.04) | 67.49 (0.06) | 67.49 (0.06) | 64.32 (3) | 66.98 (2) | 69.90 (3) | 67.65 (2) | 68.22 (1) | 67.41 | 67.41 (0.04) | 67.49 (0.06) | 69.00 (4) | |||||
| Distance | [pc] | 14.83 (0.008) | 14.83 (0.009) | 14.82 (0.01) | 14.82 (0.01) | 15.50 (0.6) | 15.55 (0.6) | 14.93 (0.4) | 14.30 (0.5) | 14.65 | 14.80 (0.6) | 14.00 | 15.65 | 14.83 | 14.83 (0.008) | 14.82 (0.01) | 14.49 (0.8) | ||
| Composition | H | H | H | H | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -403.3866541 (0.03) | -403.6334071 (0.08) | -403.387 (0.03) | -403.6334071 | ||||||||||||||
| Proper motion (declination) | [mas/yr] | -563.4038766 (0.04) | -563.3274074 (0.09) | -563.404 (0.04) | -563.3274074 | ||||||||||||||
| Variability | |||||||||||||||||||
| Magnetic | |||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||
| Binarity | |||||||||||||||||||
| B magnitude | 11.47 | ||||||||||||||||||
| V magnitude | 11.55 (0.01) | 11.53 | 11.52 | 11.55 | |||||||||||||||
| R magnitude | 11.65 | ||||||||||||||||||
| I magnitude | 11.73 | ||||||||||||||||||
| J magnitude | 12.04 (0.03) | ||||||||||||||||||
| H magnitude | 12.07 (0.03) | ||||||||||||||||||
| K magnitude | 12.19 (0.03) | ||||||||||||||||||
| u magnitude | |||||||||||||||||||
| g magnitude | |||||||||||||||||||
| r magnitude | |||||||||||||||||||
| i magnitude | |||||||||||||||||||
| z magnitude | |||||||||||||||||||
| G magnitude | 11.54 (0.0007) | 11.55 | 11.55 | 11.54 | 11.54 (0.003) | 11.55 | |||||||||||||
| BP magnitude | 11.45 (0.0007) | 11.42 | 11.42 | ||||||||||||||||
| RP magnitude | 11.72 (0.0004) | 11.72 | 11.72 | ||||||||||||||||
| Pan g magnitude | 11.57 (0.08) | ||||||||||||||||||
| Pan r magnitude | 11.61 (0) | ||||||||||||||||||
| Pan i magnitude | 12.00 (0.001) | ||||||||||||||||||
| Pan z magnitude | 12.31 (0.007) | ||||||||||||||||||
| Pan y magnitude | 12.49 (0.005) | ||||||||||||||||||
| E(B-V) | 0.000 | ||||||||||||||||||
* 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.