SDSS J082845.44+334600.4
All names: USNO-B1.0 1237-00179721, [VV2010] J082845.4+334600, Gaia DR2 903118956766981504, Gaia DR3 903118956766981504, SDSS J082845.44+334600.3, GALEX J082845.4+334600, Gaia EDR3 903118956766981504, WD 0825+339, SDSS J082845.44+334600.4
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 28 45.40 (0.3) | 08 28 45.44 | 08 28 45.40 (0.4) | 08 28 45.45 (0.3) | 08 28 45.44 | 08 28 45.62 | 08 28 45.44 | ||||||
| Declination | 33 46 00.30 (0.2) | 33 46 00.34 | 33 46 00.30 (0.3) | 33 46 00.34 (0.2) | 33 46 00.40 | 33 45 53.64 | 33 46 00.40 | ||||||
| Spectral type | DC: | DC: | DC | DC: | DC: | DC | DA | ||||||
| Effective temperature | [K] | 9125.0 | 8925.0 | 10155.0 (88) | 10165.0 (88) | ||||||||
| log(g) | [cgs] | 8.47 | 8.40 | 8.15 (0.6) | 9.05 (0.6) | ||||||||
| Mass | [M☉] | 0.898 | 0.838 | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 1.8070 | 1.6540 | ||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| Parallax | [mas] | 4.73 (0.4) | 5.74 (0.6) | 4.73 (0.4) | |||||||||
| Distance | [pc] | 211.38 (17) | 174.27 (17) | 211.38 (17) | |||||||||
| Composition | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -41.49412342 (0.4) | -40.71490044 (0.8) | -41.494 (0.4) | -43.3 | ||||||||
| Proper motion (declination) | [mas/yr] | -2.387868239 (0.3) | -2.920164664 (0.5) | -2.388 (0.3) | -0.4 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 19.30 | ||||||||||||
| V magnitude | 19.48 | ||||||||||||
| R magnitude | 19.80 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 19.64 (0.03) | 19.64 (0.03) | 19.71 (0.03) | 19.70 | 19.68 (0.03) | ||||||||
| g magnitude | 19.43 (0.01) | 19.43 (0.01) | 19.49 (0.02) | 19.48 | 19.48 (0.02) | ||||||||
| r magnitude | 19.51 (0.01) | 19.51 (0.01) | 19.52 (0.02) | 19.51 | 19.52 (0.02) | ||||||||
| i magnitude | 19.61 (0.02) | 19.61 (0.02) | 19.61 (0.02) | 19.60 | 19.61 (0.02) | ||||||||
| z magnitude | 19.69 (0.06) | 19.69 (0.06) | 19.71 (0.05) | 19.70 | 19.72 (0.05) | ||||||||
| G magnitude | 19.45 (0.04) | 19.50 | 19.45 (0.005) | ||||||||||
| BP magnitude | 19.52 (0.04) | 19.45 | |||||||||||
| RP magnitude | 19.25 (0.07) | 19.28 | |||||||||||
| Pan g magnitude | 19.45 (0.01) | ||||||||||||
| Pan r magnitude | 19.51 (0.006) | ||||||||||||
| Pan i magnitude | 19.63 (0.006) | ||||||||||||
| Pan z magnitude | 19.72 (0.02) | ||||||||||||
| Pan y magnitude | 19.67 (0.05) | ||||||||||||
| E(B-V) | 0.012 | ||||||||||||
* Constant surface field
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