All names: LSPM J2009+5112S, G230-30, WDJ200937.04+511207.68, Gaia EDR3 2088318003901474816, G 230-30, Gaia DR2 2088318003901474816, USNO-B1.0 1412-00336959, EGGR 376, 2MASS J20093704+5112075, Gaia DR3 2088318003901474816, NLTT 48839, WD 2008+510, WD 2008+51, TIC 294690620
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 09 36.85 (0.03) | 20 09 36.85 (0.04) | 20 09 36.85 | 20 09 37.04 (0.03) | 20 09 36.85 | 20 09 37.68 | ||||
| Declination | 51 12 05.23 (0.04) | 51 12 05.31 (0.04) | 51 12 05.23 | 51 12 07.68 (0.04) | 51 12 05.31 | 51 12 12.60 | ||||
| Spectral type | DA | DA | DA3.6 | DA3 | ||||||
| Effective temperature | [K] | 14080.0 (467) | 13720.0 (153) | |||||||
| log(g) | [cgs] | 7.95 (0.06) | 7.91 (0.01) | |||||||
| Mass | [M☉] | 0.58 (0.04) | 0.557 (0.008) | |||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| 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] | 10.24 (0.04) | 10.16 (0.05) | 10.24 | 10.24 (0.04) | 10.16 (0.05) | ||||
| Distance | [pc] | 97.68 (0.4) | 98.40 (0.4) | 95.00 | 97.68 | 97.68 (0.4) | 98.40 (0.4) | |||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -114.8155432 (0.05) | -114.8668625 (0.09) | -114.816 (0.05) | -114.8668625 | |||||
| Proper motion (declination) | [mas/yr] | -152.9315938 (0.05) | -152.9203567 (0.09) | -152.932 (0.05) | -152.9203567 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 16.00 | |||||||||
| V magnitude | ||||||||||
| R magnitude | 16.50 | |||||||||
| I magnitude | ||||||||||
| J magnitude | 16.62 (0.1) | |||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | ||||||||||
| g magnitude | ||||||||||
| r magnitude | ||||||||||
| i magnitude | ||||||||||
| z magnitude | ||||||||||
| G magnitude | 16.30 (0.003) | 16.32 | 16.30 | 16.30 (0.003) | 16.32 | |||||
| BP magnitude | 16.29 (0.003) | 16.28 | 16.28 | |||||||
| RP magnitude | 16.37 (0.005) | 16.38 | 16.38 | |||||||
| Pan g magnitude | 16.21 (0.002) | |||||||||
| Pan r magnitude | 16.44 (0.004) | |||||||||
| Pan i magnitude | 16.70 (0.003) | |||||||||
| Pan z magnitude | 16.90 (0.004) | |||||||||
| Pan y magnitude | 17.06 (0.006) | |||||||||
| E(B-V) | 0.007 | |||||||||
* 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.