All names: NLTT 43149, WD 1633+573, 2MASS J16342164+5710082, LP 101-16, [ZEH2003] RX J1634.3+5709 2, IDS 16326+5721 B, G 226-17, Gaia EDR3 1431176943768691328, ** LDS 1436B, EGGR 258, WD 1633+57, G 225-68, J1634+5710, LHS 422, UCAC4 736-057805, WDJ163421.55+571008.87, CNS5 4067, CSI+57-16335 2, PMSC 16325+5721B, CCDM J16343+5710B, PM J16343+5710, PSO J248.5822+57.1735, WD 1633+572, LSPM J1634+5710, 16343+5710, GJ 630.1 B, Gaia DR3 1431176943768691328, USNO 169, WDS J16345+5709B, G225-68, Gaia DR2 1431176943768691328, USNO-B1.0 1471-00307617, uvby98 980225068, GEN# +9.80225068, TIC 199574211, WD 1633+571
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Coutu et al. 2019 | Blouin et al. 2019 | Gaia DR2 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Sion et al. 2014 | Giammichele et al. 2012 | Holberg et al. 2008 | 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 | 16 34 19.37 (0.02) | 16 34 19.43 (0.02) | 16 34 21.55 | 16 34 19.43 (0.02) | 16 34 21.36 | 16 34 19.37 | 16 34 21.55 (0.02) | 16 34 19.43 | 16 34 25.30 | ||||||||||||
| Declination | 57 10 28.06 (0.02) | 57 10 27.46 (0.02) | 57 10 08.87 | 57 10 27.46 (0.02) | 57 10 08.40 | 57 10 28.06 | 57 10 08.87 (0.02) | 57 10 27.46 | 57 09 28.44 | ||||||||||||
| Spectral type | DQ | DQ | DQ | DQ | DQP | DQ | DQpec | DQ8.2 | DQpec | DQ | DC | DC | DQ8 | DQ8 | |||||||
| Effective temperature | [K] | 6126.0 (33) | 6059.0 (10) | 6106.8 (15) | 6006.0 (119) | 6045.0 (50) | 5958.0 (116) | 6200.0 (105) | 5958.0 | 5958.0 (116) | 6180.0 (240) | 6040.0 (200) | 5473.0 (32) | ||||||||
| log(g) | [cgs] | 8.02 (0.02) | 7.99 (0.003) | 8.02 (0.008) | 7.97 | 7.99 (0.03) | 8.00 (0.06) | 8.12 (0.05) | (0.06) | 8.09 (0.06) | 8.03 (0.06) | 7.82 (0.007) | |||||||||
| Mass | [M☉] | 0.584 (0.01) | 0.567 (0.003) | 0.5529 | 0.566 (0.01) | 0.57 (0.04) | 0.65 (0.03) | 0.57 (0.04) | 0.63 (0.03) | 0.59 (0.03) | 0.469 (0.005) | ||||||||||
| log(Luminosity) | [L☉] | -3.74 | -3.75 | -3.74 (0.03) | -3.74 (0.03) | ||||||||||||||||
| Cooling age | [Gyr] | 2.4200 | 2.4000 | 2.4270 (0.2) | 2.6200 | 2.6200 | 2.8400 (0.4) | 3.0700 (0.3) | |||||||||||||
| log(H/He) | |||||||||||||||||||||
| log(C/He) | -7.18 | -7.2751 (0.03) | -7.2 | -7.5 | |||||||||||||||||
| 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] | 67.35 (0.02) | 67.35 (0.02) | 67.32 (0.02) | 67.32 (0.02) | 67.32 | 67.32 (0.02) | 67.32 (0.02) | 69.20 (2) | 69.20 (2) | 69.20 (2) | 69.20 (2) | 69.20 (2) | 69.20 (2) | 67.35 | 67.35 (0.02) | 67.32 (0.02) | 61.00 (6) | |||
| Distance | [pc] | 14.85 (0.005) | 14.85 (0.004) | 14.85 (0.004) | 14.85 (0.005) | 14.85 (0.005) | 14.85 (0.005) | 14.85 (0.005) | 14.45 (0.5) | 14.40 (0.6) | 14.45 | 14.40 (0.5) | 14.45 | 14.45 (0.5) | 14.45 (0.5) | 14.85 | 14.85 (0.005) | 14.85 (0.005) | 16.39 (2) | ||
| Composition | He | He | He | He | He | He | He | He | He | He | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -1110.945608 (0.02) | -1110.868457 (0.05) | -1110.946 (0.02) | -1110.868457 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | 1199.385405 (0.03) | 1199.404583 (0.04) | 1199.385 (0.03) | 1199.404583 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | WDMS | ||||||||||||||||||||
| B magnitude | 15.49 | 15.49 | 15.47 | ||||||||||||||||||
| V magnitude | 15.00 | 14.99 | 14.99 | 14.99 | |||||||||||||||||
| R magnitude | 14.68 | 14.68 | 14.77 (0.2) | ||||||||||||||||||
| I magnitude | 14.38 | 14.38 | 14.35 | ||||||||||||||||||
| J magnitude | 14.02 (0.03) | 14.11 (0.03) | 14.03 | 14.03 | 14.02 | 14.11 (0.03) | |||||||||||||||
| H magnitude | 13.98 (0.03) | 14.08 (0.04) | 13.97 | 13.97 | 13.98 | 14.08 (0.04) | |||||||||||||||
| K magnitude | 14.00 (0.03) | 14.13 (0.06) | 13.99 | 13.99 | 14.00 | 14.13 (0.06) | |||||||||||||||
| u magnitude | |||||||||||||||||||||
| g magnitude | 15.15 (0.002) | ||||||||||||||||||||
| r magnitude | 14.84 (0.002) | ||||||||||||||||||||
| i magnitude | 14.76 (0.001) | ||||||||||||||||||||
| z magnitude | 14.78 (0.006) | ||||||||||||||||||||
| G magnitude | 14.85 (0.002) | 14.86 | 14.86 | 14.85 | 14.85 (0.003) | 14.86 | |||||||||||||||
| BP magnitude | 15.11 (0.002) | 15.12 | 15.12 | ||||||||||||||||||
| RP magnitude | 14.42 (0.001) | 14.43 | 14.43 | ||||||||||||||||||
| Pan g magnitude | 15.15 (0.002) | 15.15 (0.002) | 15.15 (0.002) | ||||||||||||||||||
| Pan r magnitude | 14.84 (0.002) | 14.84 (0.002) | 14.84 (0.002) | ||||||||||||||||||
| Pan i magnitude | 14.76 (0.001) | 14.76 (0.001) | 14.76 (0.001) | ||||||||||||||||||
| Pan z magnitude | 14.78 (0.006) | 14.78 (0.006) | 14.78 (0.006) | ||||||||||||||||||
| Pan y magnitude | 14.81 (0.003) | 14.81 (0.003) | 14.81 (0.003) | ||||||||||||||||||
| 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.