GD 356
All names: TIC 274239484, 2MASS J16405716+5341095, WD 1639+53, UBV M 43076, GJ 1205, WDJ164057.15+534109.32, GD 356, CNS5 4096, SDSS J164057.07+534108.3, GEN# +6.10060356, PM J16409+5341, Gaia EDR3 1425909733315616000, LP 137-43, Gaia DR3 1425909733315616000, SDSS J164057.08+534108.3, NLTT 43402, SBSS 1639+537, USNO-B1.0 1436-00253406, SDSS J164057.08+534108.2, LP137-043, 16409+5341, EGGR 329, PLX 3802.01, WD 1639+537, uvby98 610060356, PSO J250.2373+53.6851, LSPM J1640+5341, Gaia DR2 1425909733315616000, USNO 868, J1640+5341, PG 1639+538
| 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 | MWDD H | Gaia DR2 | Stilism | Holberg et al. 2016 | Ferrario et al. 2015 | Limoges et al. 2015 | Sion et al. 2014 | Bergeron et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 40 56.93 (0.02) | 16 40 56.94 (0.03) | 16 40 56.94 (0.03) | 16 40 57.12 | 16 40 56.93 | 16 40 57.15 (0.02) | 16 40 56.94 | 16 40 57.17 | |||||||||||||
| Declination | 53 41 06.27 (0.02) | 53 41 06.37 (0.03) | 53 41 06.37 (0.03) | 53 41 06.00 | 53 41 06.27 | 53 41 09.32 (0.02) | 53 41 06.37 | 53 41 12.84 | |||||||||||||
| Spectral type | DAHe | DAHe | DAH | DAH | DAH | DAH | DAH | DAH | DA | DAH | DAH6.7 | DC | DC | DAEH6.5 | DAH | ||||||
| Effective temperature | [K] | 7743.0 (32) | 7729.0 (68) | 7923.0 (23) | 7743.0 (32) | 7684.3 (34) | 7740.0 (60) | 7723.0 | 7512.0 (210) | 7510.0 (210) | 7410.0 (99) | 7510.0 | 7510.0 (210) | 6985.0 (29) | |||||||
| log(g) | [cgs] | 8.27 (0.006) | 8.25 (0.02) | 8.32 (0.004) | 8.27 (0.006) | 8.25 (0.01) | 8.28 (0.02) | 8.27 | 8.02 (0.1) | 8.06 (0.1) | 8.14 (0.1) | 7.99 (0.007) | |||||||||
| Mass | [M☉] | 0.764 (0.006) | 0.753 (0.01) | 0.8 (0.004) | 0.764 (0.006) | 0.769 (0.01) | 0.761 | 0.61 (0.07) | 0.67 (0.07) | 0.62 (0.07) | 0.67 (0.07) | 0.565 (0.006) | |||||||||
| log(Luminosity) | [L☉] | -3.40 | -3.42 (0.07) | ||||||||||||||||||
| Cooling age | [Gyr] | 2.0400 | 1.9330 (0.09) | 1.8880 | 1.3600 | 1.6400 (0.3) | |||||||||||||||
| 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] | 49.65 (0.02) | 49.65 (0.02) | 49.65 (0.03) | 49.65 (0.03) | 49.65 (0.03) | 49.65 (0.03) | 47.40 (4) | 47.40 (4) | 47.40 (4) | 49.65 | 49.65 (0.02) | 49.65 (0.03) | 47.40 (4) | |||||||
| Distance | [pc] | 20.14 (0.008) | 20.14 (0.008) | 20.14 (0.01) | 20.14 (0.01) | 20.14 (0.01) | 20.14 (0.01) | 21.10 (2) | 21.10 (2) | 21.09 | 21.10 (2) | 20.14 | 20.14 (0.008) | 20.14 (0.01) | 21.10 (2) | ||||||
| Composition | H | H | H | He | H | H | He | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -119.4245562 (0.03) | -119.3918172 (0.06) | -119.425 (0.03) | -119.3918172 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | -190.4384889 (0.03) | -190.6110574 (0.08) | -190.438 (0.03) | -190.6110574 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | yes | yes | yes | yes | yes | ||||||||||||||||
| Bd | [MG] | 13 | 13 | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | |||||||||||||||||||||
| B magnitude | 15.34 | 15.39 | |||||||||||||||||||
| V magnitude | 15.05 | 15.05 | |||||||||||||||||||
| R magnitude | 14.84 | 15.10 | |||||||||||||||||||
| I magnitude | 14.66 | ||||||||||||||||||||
| J magnitude | 14.53 (0.004) | 14.49 (0.03) | 14.54 | 14.49 (0.03) | |||||||||||||||||
| H magnitude | 14.48 (0.05) | 14.48 (0.05) | 14.46 | 14.48 (0.05) | |||||||||||||||||
| K magnitude | 14.37 (0.09) | 14.37 (0.09) | 14.42 | 14.37 (0.09) | |||||||||||||||||
| u magnitude | 15.55 (0.005) | 15.55 (0.005) | 15.57 (0.005) | ||||||||||||||||||
| g magnitude | 15.12 (0.004) | 15.10 (0.003) | |||||||||||||||||||
| r magnitude | 15.00 (0.002) | 14.98 (0.003) | |||||||||||||||||||
| i magnitude | 15.04 (0.002) | 15.01 (0.003) | |||||||||||||||||||
| z magnitude | 15.12 (0.003) | 15.10 (0.005) | |||||||||||||||||||
| G magnitude | 14.96 (0.003) | 14.98 | 14.98 | 14.96 | 14.96 (0.003) | 14.98 | |||||||||||||||
| BP magnitude | 15.10 (0.003) | 15.09 | 15.09 | ||||||||||||||||||
| RP magnitude | 14.70 (0.002) | 14.71 | 14.71 | ||||||||||||||||||
| Pan g magnitude | 15.12 (0.004) | 15.12 (0.003) | 15.12 (0.003) | ||||||||||||||||||
| Pan r magnitude | 15.00 (0.002) | 15.00 (0.002) | 15.00 (0.002) | ||||||||||||||||||
| Pan i magnitude | 15.04 (0.003) | 15.04 (0.002) | 15.04 (0.002) | ||||||||||||||||||
| Pan z magnitude | 15.12 (0.003) | 15.12 (0.003) | 15.12 (0.003) | ||||||||||||||||||
| Pan y magnitude | 15.19 (0.007) | 15.19 (0.008) | 15.19 (0.008) | ||||||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||||||
* Constant surface field
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