LSPM J1317+2157
All names: USNO-B1.0 1119-00241202, LSPM J1317+2157, GALEX J131749.0+215712, Gaia DR3 3943650619138622848, PM J13178+2157, SDSS J131748.96+215712.2, NLTT 33585, LP 378-956, Gaia EDR3 3943650619138622848, WD 1315+222, 13178+2157, TIC 424733781, Gaia DR2 3943650619138622848, GSC2U J131749.0+215715, PSO J199.4539+21.9528, J1317+2157, SDSS J131748.96+215712.1, WIRED J131748.96+215712.2, WDJ131748.97+215713.60, 2MASS J13174895+2157134, LAMOST J131748.96+215712.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Guo et al. 2015 | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 17 48.94 (0.05) | 13 17 48.96 | 13 17 48.94 (0.06) | 13 17 48.94 (0.06) | 13 17 48.94 | 13 17 48.97 (0.05) | 13 17 48.94 | 13 17 47.88 | 13 17 48.96 | ||||||||||||
| Declination | 21 57 09.14 (0.03) | 21 57 12.17 | 21 57 09.28 (0.05) | 21 57 09.28 (0.05) | 21 57 09.14 | 21 57 13.59 (0.03) | 21 57 09.28 | 21 57 07.20 | 21 57 12.20 | ||||||||||||
| Spectral type | DC | DCP | DC | DC | DC | DC | DC | DC | DC | DC | DC | DC | DC | DC | DC | ||||||
| Effective temperature | [K] | 6085.0 (30) | 6334.0 (50) | 6159.0 (25) | 6331.4 (31) | 6235.0 (95) | 6553.0 | 6301.0 | 6830.0 (254) | 5685.0 (60) | 6300.0 (3) | ||||||||||
| log(g) | [cgs] | 8.10 (0.009) | 8.24 (0.02) | 8.13 (0.008) | 8.25 (0.02) | 8.21 (0.03) | 8.35 | 8.23 | 8.00 (0) | 8.09 (0.01) | 10.00 (0.003) | ||||||||||
| Mass | [M☉] | 0.635 (0.008) | 0.726 (0.01) | 0.655 (0.007) | 0.707 (0.02) | 0.812 | 0.718 | 0.59 (0.1) | 0.626 (0.01) | ||||||||||||
| log(Luminosity) | [L☉] | -3.50 | |||||||||||||||||||
| Cooling age | [Gyr] | 3.1500 | 3.6100 (0.2) | 3.7050 | 3.5830 | ||||||||||||||||
| log(H/He) | -3.0 | -3.0 | |||||||||||||||||||
| log(C/He) | |||||||||||||||||||||
| log(Ca/He) | |||||||||||||||||||||
| log(Ca/H) | |||||||||||||||||||||
| log(N/He) | |||||||||||||||||||||
| log(O/He) | |||||||||||||||||||||
| log(Na/He) | |||||||||||||||||||||
| log(Mg/He) | |||||||||||||||||||||
| log(Al/He) | |||||||||||||||||||||
| log(Si/He) | |||||||||||||||||||||
| log(P/He) | |||||||||||||||||||||
| log(S/He) | |||||||||||||||||||||
| log(Cl/He) | |||||||||||||||||||||
| log(Sc/He) | |||||||||||||||||||||
| log(Ti/He) | |||||||||||||||||||||
| log(V/He) | |||||||||||||||||||||
| log(Cr/He) | |||||||||||||||||||||
| log(Mn/He) | |||||||||||||||||||||
| log(Fe/He) | |||||||||||||||||||||
| log(Co/He) | |||||||||||||||||||||
| log(Ni/He) | |||||||||||||||||||||
| log(Cu/He) | |||||||||||||||||||||
| log(Zn/He) | |||||||||||||||||||||
| log(Ga/He) | |||||||||||||||||||||
| log(Ge/He) | |||||||||||||||||||||
| log(Sr/He) | |||||||||||||||||||||
| Parallax | [mas] | 31.48 (0.06) | 31.48 (0.06) | 31.51 (0.07) | 31.51 (0.07) | 31.51 (0.07) | 31.51 (0.07) | 31.48 | 31.48 (0.06) | 31.51 (0.07) | |||||||||||
| Distance | [pc] | 31.77 (0.06) | 31.77 (0.06) | 31.74 (0.07) | 31.74 (0.07) | 31.74 (0.07) | 31.74 (0.07) | 44.50 (8) | 31.77 | 31.77 (0.06) | 31.74 (0.07) | ||||||||||
| Composition | He | He | He | H | |||||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -26.66741076 (0.06) | -26.29780346 (0.1) | -26.667 (0.06) | -26.298 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | -278.6127142 (0.04) | -278.8195416 (0.1) | -278.613 (0.04) | -278.82 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | |||||||||||||||||||||
| B magnitude | 17.00 | ||||||||||||||||||||
| V magnitude | |||||||||||||||||||||
| R magnitude | 17.20 | ||||||||||||||||||||
| I magnitude | |||||||||||||||||||||
| J magnitude | 16.02 (0.01) | 16.03 (0.08) | 16.03 (0.08) | ||||||||||||||||||
| H magnitude | 15.79 (0.2) | 15.79 (0.2) | 15.79 (0.2) | ||||||||||||||||||
| K magnitude | |||||||||||||||||||||
| u magnitude | 17.61 (0.01) | 17.60 (0.01) | 17.61 (0.01) | 17.61 (0.01) | 17.63 (0.02) | ||||||||||||||||
| g magnitude | 16.95 (0.004) | 16.94 (0.006) | 16.95 (0.004) | 16.96 (0.02) | |||||||||||||||||
| r magnitude | 16.68 (0.004) | 16.69 (0.003) | 16.68 (0.004) | 16.68 (0.03) | |||||||||||||||||
| i magnitude | 16.63 (0.005) | 16.63 (0.004) | 16.63 (0.005) | 16.63 (0.02) | |||||||||||||||||
| z magnitude | 16.67 (0.009) | 16.66 (0.006) | 16.67 (0.009) | 16.66 (0.01) | |||||||||||||||||
| G magnitude | 16.69 (0.004) | 16.71 | 16.71 | 16.69 | 16.69 (0.003) | 16.71 | |||||||||||||||
| BP magnitude | 16.93 (0.004) | 16.93 | 16.93 | ||||||||||||||||||
| RP magnitude | 16.29 (0.003) | 16.31 | 16.31 | ||||||||||||||||||
| Pan g magnitude | 16.94 (0.007) | 16.94 (0.006) | 16.94 (0.006) | ||||||||||||||||||
| Pan r magnitude | 16.69 (0.003) | 16.69 (0.003) | 16.69 (0.003) | ||||||||||||||||||
| Pan i magnitude | 16.63 (0.004) | 16.63 (0.004) | 16.63 (0.004) | ||||||||||||||||||
| Pan z magnitude | 16.66 (0.005) | 16.66 (0.006) | 16.66 (0.006) | ||||||||||||||||||
| Pan y magnitude | 16.69 (0.004) | 16.69 (0.005) | 16.69 (0.005) | ||||||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||||||
* Constant surface field
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