All names: 2MASS J20480817+3951379, WD 2046+396, Gaia EDR3 2065027255250167040, 1SWASP J204808.16+395137.8, KPD 2046+3940, GSC2.3 N34B088658, USNO-B1.0 1298-00411281, TIC 194061710, Lan 361, GSC2 N033302388658, Gaia DR2 2065027255250167040, UCAC3 260-206662, Gaia DR3 2065027255250167040
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Lepine et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 48 08.14 (0.02) | 20 48 08.14 (0.03) | 20 48 08.14 | 20 48 08.19 (0.02) | 20 48 08.33 | |||||
| Declination | 39 51 36.63 (0.03) | 39 51 36.65 (0.03) | 39 51 36.63 | 39 51 37.34 (0.03) | 39 51 55.80 | |||||
| Spectral type | DA | DA1.0 | DA | DA.8 | DA | |||||
| Effective temperature | [K] | 66600.0 (1532) | 66320.0 (1396) | |||||||
| log(g) | [cgs] | 7.57 (0.07) | 7.98 (0.07) | |||||||
| Mass | [M☉] | 0.56 (0.02) | 0.72 (0.03) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.0010 | ||||||||
| 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] | 6.75 (0.03) | 6.72 (0.04) | 6.75 | 6.75 (0.03) | |||||
| Distance | [pc] | 148.10 (0.7) | 148.82 (0.9) | 189.00 | 145.00 | 148.10 | 148.10 (0.7) | |||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -35.55835051 (0.03) | -35.59276428 (0.06) | -35.558 (0.03) | ||||||
| Proper motion (declination) | [mas/yr] | -44.27058203 (0.04) | -44.49168856 (0.06) | -44.271 (0.04) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 14.10 | |||||||||
| V magnitude | 14.43 | |||||||||
| R magnitude | 14.50 | |||||||||
| I magnitude | 14.20 | |||||||||
| J magnitude | 14.87 (0.05) | |||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | 14.52 | |||||||||
| i magnitude | 14.72 | |||||||||
| z magnitude | ||||||||||
| G magnitude | 14.35 (0.002) | 14.37 | 14.35 | 14.35 (0.003) | ||||||
| BP magnitude | 14.19 (0.002) | 14.13 | ||||||||
| RP magnitude | 14.68 (0.001) | 14.68 | ||||||||
| Pan g magnitude | 14.20 (0.001) | |||||||||
| Pan r magnitude | 14.66 (0.004) | |||||||||
| Pan i magnitude | 15.04 (0.003) | |||||||||
| Pan z magnitude | 15.31 (0.004) | |||||||||
| Pan y magnitude | 15.51 (0.003) | |||||||||
| E(B-V) | 0.023 | |||||||||
* 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.