All names: Gaia DR3 1431176943768691328, WDJ163421.55+571008.87, J1634+5710, WD 1633+57, TIC 199574211, G225-68, LP 101-16, WD 1633+571, CCDM J16343+5710B, 2MASS J16342164+5710082, CNS5 4067, LSPM J1634+5710, WDS J16345+5709B, Gaia DR2 1431176943768691328, GJ 630.1 B, Gaia EDR3 1431176943768691328, CSI+57-16335 2, USNO-B1.0 1471-00307617, ** LDS 1436B, WD 1633+572, uvby98 980225068, LHS 422, G 226-17, USNO 169, PSO J248.5822+57.1735, 16343+5710, PMSC 16325+5721B, UCAC4 736-057805, WD 1633+573, [ZEH2003] RX J1634.3+5709 2, GEN# +9.80225068, PM J16343+5710, G 225-68, EGGR 258, IDS 16326+5721 B, NLTT 43149
| 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.