HD 17998B
All names: WDJ025332.32-003344.74, ** LDS 5399B, LP 591-177, LAMOST J025332.38-003344.9, Gaia DR3 2497895053130247040, PB 6920, HD 17998B, LP 591-117, BD-01 407B, WDS J02535-0034B, US 3289, Gaia DR2 2497895053130247040, 2MASS J02533231-0033447, GALEX J025332.3-003344, WD 0250-007, SDSS J025332.33-003344.7, BD-01 0407, SDSS J025332.32-003344.7, KUV 02510-0046, TIC 439869954, [LCB92] 0250-0045, USNO-B1.0 0894-00029456, Gaia EDR3 2497895053130247040, J0253-0033
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Bedard et al. 2017 | Tremblay et al. 2017 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 53 32.42 (0.05) | 02 53 32.41 (0.07) | 02 53 32.42 | 02 53 32.32 (0.05) | 02 53 32.41 | 02 53 31.22 | |||||||||||
| Declination | -00 33 45.16 (0.04) | -00 33 45.14 (0.06) | -00 33 45.16 | -00 33 44.75 (0.04) | -00 33 45.14 | -00 33 59.76 | |||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA6.0 | DA | |||||||
| Effective temperature | [K] | 7888.0 (58) | 8143.0 (42) | 7888.0 (58) | 7889.0 | 8278.0 (124) | 8410.0 (130) | 8400.0 (126) | 7948.0 (13) | 8183.0 (85) | |||||||
| log(g) | [cgs] | 7.97 (0.01) | 8.04 (0.01) | 7.97 (0.01) | 7.97 | 8.29 (0.07) | 8.20 (0.07) | 8.43 (0.07) | 7.79 (0.02) | 8.05 (0.02) | |||||||
| Mass | [M☉] | 0.579 (0.01) | 0.62 (0.008) | 0.575 (0.01) | 0.575 | 0.87 (0.05) | 0.628 (0.01) | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||||||
| Cooling age | [Gyr] | 1.1300 | 1.0660 | ||||||||||||||
| 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] | 21.26 (0.06) | 21.17 (0.09) | 21.17 (0.09) | 21.00 (0.7) | 21.26 | 21.26 (0.06) | 21.17 (0.09) | |||||||||
| Distance | [pc] | 47.04 (0.1) | 47.24 (0.2) | 47.23 (0.2) | 47.60 (2) | 47.62 (1) | 37.00 | 47.04 | 47.04 (0.1) | 47.23 (0.2) | |||||||
| Composition | H | H | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 93.175507 (0.06) | 93.21028086 (0.2) | 93.176 (0.06) | 93.21028086 | ||||||||||||
| Proper motion (declination) | [mas/yr] | -25.69838686 (0.05) | -25.87164494 (0.1) | -25.698 (0.05) | -25.87164494 | ||||||||||||
| Variability | |||||||||||||||||
| Magnetic | |||||||||||||||||
| Bd | [MG] | ||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||
| Binarity | yes | ||||||||||||||||
| B magnitude | 16.76 | ||||||||||||||||
| V magnitude | 16.40 (0.05) | 16.40 | 16.40 | ||||||||||||||
| R magnitude | 15.70 | ||||||||||||||||
| I magnitude | |||||||||||||||||
| J magnitude | 15.90 (0.009) | 15.94 (0.07) | |||||||||||||||
| H magnitude | 15.75 (0.01) | 15.79 (0.1) | |||||||||||||||
| K magnitude | 15.83 (0.02) | 15.85 (0.2) | |||||||||||||||
| u magnitude | 16.61 (0.01) | 17.00 (0.009) | 16.93 (0.008) | ||||||||||||||
| g magnitude | 16.42 (0.004) | 16.45 (0.004) | |||||||||||||||
| r magnitude | 16.35 (0.005) | 16.40 (0.004) | |||||||||||||||
| i magnitude | 16.38 (0.006) | 16.36 (0.005) | |||||||||||||||
| z magnitude | 16.52 (0.009) | 16.54 (0.009) | |||||||||||||||
| G magnitude | 16.31 (0.006) | 16.33 | 16.29 (0.003) | 16.31 | 16.31 (0.003) | 16.33 | |||||||||||
| BP magnitude | 16.44 (0.006) | 16.44 | 16.44 | ||||||||||||||
| RP magnitude | 16.07 (0.007) | 16.07 | 16.07 | ||||||||||||||
| Pan g magnitude | 16.43 (0.006) | 16.43 (0.004) | |||||||||||||||
| Pan r magnitude | 16.36 (0.005) | 16.36 (0.005) | |||||||||||||||
| Pan i magnitude | 16.41 (0.006) | 16.41 (0.005) | |||||||||||||||
| Pan z magnitude | 16.50 (0.01) | 16.50 (0.01) | |||||||||||||||
| Pan y magnitude | 16.52 (0.01) | 16.52 (0.01) | |||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||
* Constant surface field
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