LP 70-172
All names: WD 1710+684, GALEX J170957.2+682001, WDS J17098+6821B, ** LDS 1438B, Gaia DR3 1636757232723867264, EGGR 369, USNO-B1.0 1583-00172611, NLTT 44348, WD 1710+683, J1709+6820, WD 1710+68, Gaia DR2 1636757232723867264, LSPM J1709+6820E, LP 70-172, WD 1710+682, TIC 1271265755, Gaia EDR3 1636757232723867264, G 240-47, WDJ170957.32+682001.00
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | MWDD H | Gaia DR2 | 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 | 17 09 57.06 (0.06) | 17 09 57.07 (0.08) | 17 09 57.06 | 17 09 57.32 (0.06) | 17 09 57.07 | 17 09 57.38 | |||||||
| Declination | 68 20 05.12 (0.06) | 68 20 05.00 (0.1) | 68 20 05.12 | 68 20 00.99 (0.06) | 68 20 05.00 | 68 19 47.28 | |||||||
| Spectral type | DA | DA | DA | DA | DA | DA7.6 | DA8 | ||||||
| Effective temperature | [K] | 6526.0 (16) | 6526.0 | 6630.0 (230) | 6630.0 (232) | 6707.0 (60) | |||||||
| log(g) | [cgs] | 7.93 (0.008) | 7.93 | 7.86 (0.5) | 7.90 (0.5) | 7.99 (0.02) | |||||||
| Mass | [M☉] | 0.547 (0.007) | 0.547 | 0.53 (0.3) | 0.587 (0.01) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 1.6800 | 1.6160 | ||||||||||
| 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] | 18.30 (0.06) | 18.25 (0.09) | 18.25 (0.09) | 17.98 (0.5) | 18.30 | 18.30 (0.06) | 18.25 (0.09) | |||||
| Distance | [pc] | 54.66 (0.2) | 54.79 (0.3) | 54.79 (0.3) | 55.62 (2) | 58.00 | 54.66 | 54.66 (0.2) | 54.79 (0.3) | ||||
| Composition | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -91.44058585 (0.07) | -91.15601961 (0.1) | -91.441 (0.07) | -91.15601961 | ||||||||
| Proper motion (declination) | [mas/yr] | 258.1074034 (0.09) | 258.0724466 (0.2) | 258.107 (0.09) | 258.0724466 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | yes | ||||||||||||
| B magnitude | 17.60 | ||||||||||||
| V magnitude | 17.50 (0.05) | ||||||||||||
| R magnitude | 17.10 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | |||||||||||||
| g magnitude | |||||||||||||
| r magnitude | |||||||||||||
| i magnitude | |||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 17.28 (0.01) | 17.30 | 17.26 (0.007) | 17.28 | 17.28 (0.003) | 17.30 | |||||||
| BP magnitude | 17.51 (0.01) | 17.52 | 17.52 | ||||||||||
| RP magnitude | 16.89 (0.009) | 16.89 | 16.89 | ||||||||||
| Pan g magnitude | 17.53 (0.0009) | 17.53 (0.001) | |||||||||||
| Pan r magnitude | 17.30 (0.004) | 17.30 (0.004) | |||||||||||
| Pan i magnitude | 17.22 (0.003) | 17.22 (0.003) | |||||||||||
| Pan z magnitude | 17.25 (0.006) | 17.25 (0.005) | |||||||||||
| Pan y magnitude | 17.27 (0.02) | 17.27 (0.02) | |||||||||||
| E(B-V) | 0.007 | ||||||||||||
* Constant surface field
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