BD+80 670B
All names: WDJ204517.85+810503.40, TIC 406533735, IDS 20506+8043 B, UCAC3 343-27561, UCAC4 856-012367, LP 25-436, WD 2047+809, ** LDS 1938B, CCDM J20454+8105B, WDS J20454+8105B, Gaia DR2 2298135638862051968, Gaia DR3 2298135638862051968, BD+80 670B, J2045+8105, WD 2048+809, USNO-B1.0 1710-00060547, 2MASS J20451775+8105038, Gaia EDR3 2298135638862051968, EGGR 445
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | MWDD H | Gaia DR2 | Bedard et al. 2017 | Tremblay et al. 2017 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 45 18.17 (0.04) | 20 45 18.16 (0.04) | 20 45 18.17 | 20 45 17.85 (0.04) | 20 45 18.16 | 20 45 18.98 | ||||||||
| Declination | 81 05 05.28 (0.04) | 81 05 05.22 (0.05) | 81 05 05.28 | 81 05 03.40 (0.04) | 81 05 05.22 | 81 05 06.00 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA6.0 | DA7 | ||||||
| Effective temperature | [K] | 8019.0 (81) | 7893.0 | 8365.0 (124) | 8450.0 (130) | 8440.0 (125) | 8505.0 (71) | |||||||
| log(g) | [cgs] | 7.51 (0.02) | 7.47 | 8.23 (0.07) | 8.11 (0.07) | 8.34 (0.07) | 7.68 (0.02) | |||||||
| Mass | [M☉] | 0.352 (0.01) | 0.334 | 0.81 (0.05) | 0.426 (0.01) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.6300 | 0.6328 | |||||||||||
| 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] | 14.94 (0.04) | 15.02 (0.04) | 15.02 (0.04) | 11.67 (0.8) | 14.94 | 14.94 (0.04) | 15.02 (0.04) | ||||||
| Distance | [pc] | 66.93 (0.2) | 66.58 (0.2) | 66.56 (0.2) | 85.70 (8) | 85.69 (6) | 40.00 | 66.93 | 66.93 (0.2) | 66.56 (0.2) | ||||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 46.84360625 (0.06) | 46.65377263 (0.08) | 46.844 (0.06) | 46.65377263 | |||||||||
| Proper motion (declination) | [mas/yr] | 117.5560458 (0.05) | 117.2562584 (0.1) | 117.556 (0.05) | 117.2562584 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | DDu | |||||||||||||
| B magnitude | 16.00 (0.1) | |||||||||||||
| V magnitude | 16.59 (0.05) | |||||||||||||
| R magnitude | 16.44 (0.2) | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.15 (0.1) | 16.15 (0.1) | ||||||||||||
| H magnitude | 16.14 (0.3) | 16.14 (0.3) | ||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | ||||||||||||||
| g magnitude | ||||||||||||||
| r magnitude | ||||||||||||||
| i magnitude | ||||||||||||||
| z magnitude | ||||||||||||||
| G magnitude | 16.44 (0.006) | 16.46 | 16.43 (0.002) | 16.44 | 16.44 (0.003) | 16.46 | ||||||||
| BP magnitude | 16.55 (0.006) | 16.53 | 16.53 | |||||||||||
| RP magnitude | 16.23 (0.008) | 16.21 | 16.21 | |||||||||||
| Pan g magnitude | 16.51 (0.009) | 16.51 (0.008) | ||||||||||||
| Pan r magnitude | 16.45 (0.004) | 16.45 (0.004) | ||||||||||||
| Pan i magnitude | 16.49 (0.007) | 16.49 (0.007) | ||||||||||||
| Pan z magnitude | 16.59 (0.03) | 16.59 (0.02) | ||||||||||||
| Pan y magnitude | 16.61 (0.009) | 16.61 (0.009) | ||||||||||||
| E(B-V) | 0.005 | |||||||||||||
* Constant surface field
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