WD 0821+288
All names: Gaia DR2 707408841962407936, LSPM J0825+2841, SDSS J082500.60+284149.9, SDSS J082500.60+284149.8, WD 0821+288, USNO-B1.0 1186-00159899, Gaia DR3 707408841962407936, Gaia EDR3 707408841962407936, WDJ082500.64+284150.18
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 25 00.49 (0.2) | 08 25 00.50 (0.2) | 08 25 00.49 | 08 25 00.64 (0.2) | 08 25 00.50 | 08 25 00.48 | ||||||
| Declination | 28 41 48.44 (0.1) | 28 41 48.49 (0.1) | 28 41 48.44 | 28 41 50.19 (0.1) | 28 41 48.49 | 28 41 42.72 | ||||||
| Spectral type | DA | D | D | DA | D | ___9.0 | ||||||
| Effective temperature | [K] | 5445.0 (18) | 5448.0 | 5170.0 | 5624.0 (104) | |||||||
| log(g) | [cgs] | 7.74 (0.02) | 7.75 | 7.54 | 7.85 (0.04) | |||||||
| Mass | [M☉] | 0.438 (0.01) | 0.445 | 0.334 | 0.499 (0.04) | |||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 2.0270 | 2.2550 | |||||||||
| 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] | 13.37 (0.2) | 13.45 (0.2) | 13.37 | 13.37 (0.2) | 13.45 (0.2) | ||||||
| Distance | [pc] | 74.82 (1) | 74.35 (1) | 74.82 | 74.82 (1) | 74.35 (1) | ||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -115.4337692 (0.2) | -116.1177387 (0.4) | -115.434 (0.2) | -116.1177387 | |||||||
| Proper motion (declination) | [mas/yr] | -109.6205393 (0.1) | -109.0457781 (0.3) | -109.621 (0.1) | -109.0457781 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 18.90 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | 18.40 | |||||||||||
| I magnitude | ||||||||||||
| J magnitude | 17.38 (0.04) | |||||||||||
| H magnitude | 17.12 (0.04) | |||||||||||
| K magnitude | 17.03 (0.04) | |||||||||||
| u magnitude | 20.20 (0.05) | 20.24 (0.05) | 20.14 | |||||||||
| g magnitude | 18.99 (0.009) | 18.97 (0.009) | 18.98 | |||||||||
| r magnitude | 18.48 (0.009) | 18.45 (0.009) | 18.44 | |||||||||
| i magnitude | 18.27 (0.009) | 18.27 (0.01) | 18.29 | |||||||||
| z magnitude | 18.15 (0.02) | 18.16 (0.03) | 18.18 | |||||||||
| G magnitude | 18.49 (0.02) | 18.51 | 18.49 | 18.49 (0.003) | 18.51 | |||||||
| BP magnitude | 18.84 (0.02) | 18.83 | 18.83 | |||||||||
| RP magnitude | 17.94 (0.03) | 17.89 | 17.89 | |||||||||
| Pan g magnitude | 18.91 (0.003) | |||||||||||
| Pan r magnitude | 18.47 (0.005) | |||||||||||
| Pan i magnitude | 18.27 (0.005) | |||||||||||
| Pan z magnitude | 18.22 (0.01) | |||||||||||
| Pan y magnitude | 18.19 (0.02) | |||||||||||
| E(B-V) | 0.002 | |||||||||||
* Constant surface field
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