All names: PSO J250.4025+15.2085, LSPM J1641+1512, PM J16416+1512, USNO 290, SDSS J164136.61+151234.9, 16416+1512, Gaia DR3 4462612140287443840, G 138-56, TIC 263723973, PG 1639+153, 2MASS J16413661+1512377, SDSS J164136.61+151235.0, WD 1639+153, LHS 3236, Gaia DR2 4462612140287443840, WD 1639+15, CSI+15-16393, UCAC2 37197300, Gaia EDR3 4462612140287443840, GEN# +9.80138056, PLX 3796.01, UBV M 53790, J1641+1512, EGGR 196, G138-56, UBV 14136, USNO-B1.0 1052-00269612, NLTT 43383, WDJ164136.61+151237.93
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | Kilic et al. 2020 | McCleery et al. 2020 | Blouin et al. 2019 | Gaia DR2 | Bedard et al. 2017 | Stilism | Limoges et al. 2015 | Gianninas et al. 2011 | Liebert et al. 2005 | Zuckerman et al. 2003 | Bergeron et al. 1997 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 41 36.63 (0.2) | 16 41 36.63 (0.07) | 16 41 36.63 (0.07) | 16 41 36.63 | 16 41 36.61 (0.2) | 16 41 36.63 | 16 41 36.62 | ||||||||||||||
| Declination | 15 12 27.20 (0.2) | 15 12 27.53 (0.06) | 15 12 27.53 (0.06) | 15 12 27.20 | 15 12 37.93 (0.2) | 15 12 27.53 | 15 12 55.08 | ||||||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA6.7 | DA7 | |||||||||
| Effective temperature | [K] | 7321.0 (11) | 7329.0 (57) | 7422.0 (20) | 7363.0 (26) | 7273.9 (27) | 7240.0 (50) | 7452.0 (110) | 7450.0 (110) | 7550.0 (112) | 7480.0 (110) | 7240.0 | 7450.0 (360) | 7467.0 (31) | |||||||
| log(g) | [cgs] | 7.93 (0.009) | 7.92 (0.03) | 7.93 (0.006) | 7.91 (0.007) | 7.87 (0.02) | 7.87 (0.02) | 8.49 (0.07) | 8.49 (0.07) | 8.52 (0.07) | 8.42 (0.06) | 8.00 | 8.00 (0) | 7.96 (0.01) | |||||||
| Mass | [M☉] | 0.549 (0.007) | 0.547 (0.02) | 0.552 (0.005) | 0.539 (0.006) | 0.518 (0.01) | 0.91 (0.04) | 0.93 (0.04) | 0.87 (0.04) | 0.6 | 0.571 (0.009) | ||||||||||
| log(Luminosity) | [L☉] | -3.65 | -3.59 | -3.34 | |||||||||||||||||
| Cooling age | [Gyr] | 1.2200 | 1.1590 (0.03) | 3.0903 | 1.3600 | ||||||||||||||||
| log(H/He) | |||||||||||||||||||||
| log(C/He) | |||||||||||||||||||||
| log(Ca/He) | |||||||||||||||||||||
| log(Ca/H) | <-11.344 | ||||||||||||||||||||
| 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] | 32.21 (0.2) | 32.21 (0.2) | 31.48 (0.1) | 31.48 (0.1) | 31.48 (0.1) | 31.48 (0.1) | 32.40 (0.3) | 6.70 (10) | 32.21 | 32.21 (0.2) | 31.48 (0.1) | 6.00 (9) | ||||||||
| Distance | [pc] | 31.05 (0.2) | 31.05 (0.2) | 31.77 (0.1) | 31.77 (0.1) | 31.77 (0.1) | 31.77 (0.1) | 30.90 (0.2) | 30.90 (0.2) | 21.00 | 22.00 | 149.25 (223) | 31.05 | 31.05 (0.2) | 31.77 (0.1) | 166.67 (250) | |||||
| Composition | H | H | H | H | H | H | H | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 15.45056738 (0.2) | 20.94457634 (0.1) | 15.451 (0.2) | 20.94457634 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | -670.6673072 (0.2) | -670.8161978 (0.1) | -670.667 (0.2) | -670.8161978 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | DDu | ||||||||||||||||||||
| B magnitude | 16.02 | 16.09 | |||||||||||||||||||
| V magnitude | 15.66 | 15.70 | |||||||||||||||||||
| R magnitude | 15.49 | 15.40 | |||||||||||||||||||
| I magnitude | 15.25 | ||||||||||||||||||||
| J magnitude | 15.04 (0.005) | 15.07 (0.04) | 15.07 (0.04) | ||||||||||||||||||
| H magnitude | 14.98 (0.09) | 14.98 (0.09) | 14.98 (0.09) | ||||||||||||||||||
| K magnitude | 15.06 (0.1) | 15.06 (0.1) | 15.06 (0.1) | ||||||||||||||||||
| u magnitude | 16.29 (0.006) | 16.30 (0.006) | 16.30 (0.006) | ||||||||||||||||||
| g magnitude | 15.78 (0.001) | 15.77 (0.003) | |||||||||||||||||||
| r magnitude | 15.66 (0.003) | 15.65 (0.004) | |||||||||||||||||||
| i magnitude | 15.65 (0.005) | 15.63 (0.004) | |||||||||||||||||||
| z magnitude | 15.67 (0.0001) | 15.71 (0.006) | |||||||||||||||||||
| G magnitude | 15.62 (0.002) | 15.63 | 15.63 | 15.62 | 15.62 (0.003) | 15.63 | |||||||||||||||
| BP magnitude | 15.77 (0.002) | 15.77 | 15.77 | ||||||||||||||||||
| RP magnitude | 15.30 (0.002) | 15.31 | 15.31 | ||||||||||||||||||
| Pan g magnitude | 15.78 (0.001) | 15.78 (0.003) | 15.78 (0.001) | ||||||||||||||||||
| Pan r magnitude | 15.66 (0.003) | 15.66 (0.004) | 15.66 (0.003) | ||||||||||||||||||
| Pan i magnitude | 15.65 (0.005) | 15.64 (0.002) | 15.65 (0.005) | ||||||||||||||||||
| Pan z magnitude | 15.67 (0) | 15.71 (0.004) | 15.67 (0) | ||||||||||||||||||
| Pan y magnitude | 15.75 (0.001) | 15.78 (0.004) | 15.75 (0.001) | ||||||||||||||||||
| 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.