All names: ASCC 58392, USNO 270, UBV M 43028, LSPM J2133+8303, LAWD 88, WD 2136+828, UBV 18654, 21337+8303, G 265-41, NLTT 51738, WD 2136+82, 2MASS J21334325+8303323, LHS 3687, WDJ213343.31+830332.43, EGGR 147, GJ 9746, AC +82 3818-0, Gaia DR3 2300234782654298624, CSI+82-21364, AC +82 3818, uvby98 980261045, G261-45, GJ 836.2, GEN# +9.80261045, USNO-B1.0 1730-00048838, Gaia EDR3 2300234782654298624, LFT 1649, WISEA J213344.96+830338.3, LTT 16324, UBV M 42735, Gaia DR2 2300234782654298624, PLX 5239.10, PLX 5239.1, TIC 264404583, PM J21337+8303, G 261-45
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | McCleery et al. 2020 | MWDD H | Gaia DR2 | Bedard et al. 2017 | Stilism | Limoges et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 33 45.81 (0.02) | 21 33 45.73 (0.03) | 21 33 45.73 (0.03) | 21 33 45.81 | 21 33 43.31 (0.02) | 21 33 45.73 | 21 33 36.74 | ||||||||
| Declination | 83 03 41.51 (0.02) | 83 03 41.23 (0.04) | 83 03 41.23 (0.04) | 83 03 41.51 | 83 03 32.43 (0.02) | 83 03 41.23 | 83 03 16.20 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA2.8 | DA3 | ||||||
| Effective temperature | [K] | 17488.0 (324) | 17312.3 (133) | 17819.0 | 17698.0 (263) | 17780.0 (264) | 17700.0 (263) | 18320.0 (142) | |||||||
| log(g) | [cgs] | 7.93 (0.02) | 7.92 (0.01) | 7.96 | 7.97 (0.04) | 7.99 (0.05) | 7.97 (0.04) | 7.99 (0.006) | |||||||
| Mass | [M☉] | 0.579 (0.01) | 0.597 | 0.61 (0.2) | 0.61 (0.03) | 0.6 (0.03) | 0.612 (0.005) | ||||||||
| log(Luminosity) | [L☉] | -1.81 | |||||||||||||
| Cooling age | [Gyr] | 0.1014 | |||||||||||||
| 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] | 37.85 (0.02) | 37.85 (0.02) | 37.86 (0.04) | 37.86 (0.04) | 38.40 (4) | 37.85 | 37.85 (0.02) | 37.86 (0.04) | 47.00 | |||||
| Distance | [pc] | 26.42 (0.02) | 26.42 (0.01) | 26.41 (0.03) | 26.41 (0.03) | 26.00 (3) | 26.00 (3) | 26.00 | 26.42 | 26.42 (0.02) | 26.41 (0.03) | 21.28 | |||
| Composition | H | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 282.8491655 (0.03) | 282.6932538 (0.06) | 282.849 (0.03) | 282.6932538 | ||||||||||
| Proper motion (declination) | [mas/yr] | 567.3901786 (0.03) | 567.3880466 (0.07) | 567.39 (0.03) | 567.3880466 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | 13.00 | ||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | 13.50 | ||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 13.45 (0.02) | ||||||||||||||
| H magnitude | 13.49 (0.04) | ||||||||||||||
| K magnitude | 13.50 (0.04) | ||||||||||||||
| u magnitude | |||||||||||||||
| g magnitude | |||||||||||||||
| r magnitude | |||||||||||||||
| i magnitude | |||||||||||||||
| z magnitude | |||||||||||||||
| G magnitude | 13.05 (0.0006) | 13.07 | 13.07 | 13.05 | 13.05 (0.003) | 13.07 | |||||||||
| BP magnitude | 12.98 (0.0006) | 12.96 | 12.96 | ||||||||||||
| RP magnitude | 13.20 (0.0008) | 13.20 | 13.20 | ||||||||||||
| Pan g magnitude | 12.87 (0.01) | ||||||||||||||
| Pan r magnitude | 13.25 (0.005) | ||||||||||||||
| Pan i magnitude | 13.54 (0.001) | ||||||||||||||
| Pan z magnitude | 13.75 (0.02) | ||||||||||||||
| Pan y magnitude | 13.94 (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.