GD 515
All names: USNO-B1.0 1536-00216579, LP 70-25, [BGK2006] J165429.06+633921.2, LSPM J1654+6339, GD 515, NLTT 43845, FBS 1654+637, Gaia EDR3 1631669453120152192, 2MASS J16542900+6339210, J1654+6339, FBS B 748, Gaia DR3 1631669453120152192, Gaia DR2 1631669453120152192, TIC 287150240, GALEX J165429.0+633920, SDSS J165429.04+633921.1, PG 1654+637, WD 1654+637, WDJ165429.06+633921.18, SDSS J165429.05+633921.2, SDSS J165428.94+633920.7, SDSS J165428.94+633920.6
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 54 28.77 (0.03) | 16 54 28.77 (0.06) | 16 54 28.77 | 16 54 29.06 (0.03) | 16 54 28.77 | 16 54 26.18 | ||||||||
| Declination | 63 39 19.73 (0.04) | 63 39 19.77 (0.07) | 63 39 19.73 | 63 39 21.18 (0.04) | 63 39 19.77 | 63 39 10.44 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA3.2 | DA4 | |||||||
| Effective temperature | [K] | 15789.0 (199) | 15785.0 (199) | 15364.0 | 15780.0 (313) | 15070.0 (299) | 16205.0 (184) | |||||||
| log(g) | [cgs] | 7.90 (0.01) | 7.91 (0.01) | 7.88 | 7.76 (0.06) | 7.63 (0.06) | 7.93 (0.01) | |||||||
| Mass | [M☉] | 0.559 (0.007) | 0.565 (0.009) | 0.548 | 0.49 (0.03) | 0.44 (0.03) | 0.574 (0.008) | |||||||
| log(Luminosity) | [L☉] | -1.88 | ||||||||||||
| Cooling age | [Gyr] | 0.1505 | 0.2042 | |||||||||||
| 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] | 11.70 (0.04) | 11.79 (0.07) | 11.70 | 11.70 (0.04) | 11.79 (0.07) | ||||||||
| Distance | [pc] | 85.43 (0.3) | 84.80 (0.5) | 89.00 | 98.00 | 85.43 | 85.43 (0.3) | 84.80 (0.5) | ||||||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -121.6913264 (0.04) | -121.5606097 (0.1) | -121.691 (0.04) | -121.5606097 | |||||||||
| Proper motion (declination) | [mas/yr] | -90.6207956 (0.05) | -90.59060143 (0.1) | -90.621 (0.05) | -90.59060143 | |||||||||
| Variability | NOV | |||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 15.50 | |||||||||||||
| V magnitude | 15.65 | |||||||||||||
| R magnitude | 15.90 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.17 (0.1) | |||||||||||||
| H magnitude | 15.69 (0.1) | |||||||||||||
| K magnitude | 15.56 (0.2) | |||||||||||||
| u magnitude | 15.85 (0.005) | 15.83 (0.005) | ||||||||||||
| g magnitude | 15.57 (0.004) | 15.54 (0.003) | ||||||||||||
| r magnitude | 15.88 (0.004) | 15.86 (0.004) | ||||||||||||
| i magnitude | 16.15 (0.004) | 16.15 (0.004) | ||||||||||||
| z magnitude | 16.43 (0.008) | 16.43 (0.008) | ||||||||||||
| G magnitude | 15.73 (0.002) | 15.76 | 15.73 | 15.73 (0.003) | 15.76 | |||||||||
| BP magnitude | 15.68 (0.002) | 15.67 | 15.67 | |||||||||||
| RP magnitude | 15.86 (0.003) | 15.86 | 15.86 | |||||||||||
| Pan g magnitude | 15.60 (0.006) | |||||||||||||
| Pan r magnitude | 15.89 (0.003) | |||||||||||||
| Pan i magnitude | 16.17 (0.002) | |||||||||||||
| Pan z magnitude | 16.42 (0.005) | |||||||||||||
| Pan y magnitude | 16.57 (0.004) | |||||||||||||
| E(B-V) | 0.012 | |||||||||||||
* Constant surface field
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