LP 240-30
All names: PSO J001.9769+39.7920, TIC 194300778, Gaia DR2 383108338321272448, WD 0005+395, Gaia DR3 383108338321272448, PM J00079+3947, 2MASS J00075407+3947322, NLTT 317, Gaia EDR3 383108338321272448, J0007+3947, LSPM J0007+3947, USNO-B1.0 1297-00003001, LP 240-30, WDJ000754.11+394732.18, 00079+3947
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Blouin et al. 2019 | MWDD H | Gaia DR2 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 07 54.61 (0.04) | 00 07 54.60 (0.05) | 00 07 54.60 (0.05) | 00 07 54.61 | 00 07 54.11 (0.04) | 00 07 54.60 | |||||||||
| Declination | 39 47 30.95 (0.03) | 39 47 30.99 (0.03) | 39 47 30.99 (0.03) | 39 47 30.95 | 39 47 32.18 (0.03) | 39 47 30.99 | |||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC | DC: | DC | ||||||
| Effective temperature | [K] | 4679.0 (27) | 4759.0 (12) | 4626.7 (14) | 4680.0 (25) | 4690.0 | 4890.0 (435) | 4890.0 (453) | |||||||
| log(g) | [cgs] | 6.93 (0.04) | 7.05 (0.007) | 6.88 (0.02) | 6.77 (0.04) | 6.77 | 8.00 (0) | 8.00 (0) | |||||||
| Mass | [M☉] | 0.17 (0.009) | 0.201 (0.003) | 0.081 (0.02) | 0.114 | 0.58 (0) | 0.58 (0.1) | ||||||||
| log(Luminosity) | [L☉] | -4.09 | |||||||||||||
| Cooling age | [Gyr] | 2.4200 | 1.4020 (0.06) | 6.1400 | |||||||||||
| 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] | 29.10 (0.06) | 29.10 (0.06) | 29.04 (0.06) | 29.04 (0.06) | 29.04 (0.06) | 29.04 (0.06) | 29.10 | 29.10 (0.06) | 29.04 (0.06) | |||||
| Distance | [pc] | 34.36 (0.07) | 34.36 (0.07) | 34.44 (0.07) | 34.44 (0.08) | 34.44 (0.07) | 34.44 (0.08) | 20.21 (1) | 20.20 (3) | 34.36 | 34.36 (0.07) | 34.44 (0.08) | |||
| Composition | H | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 359.0968889 (0.04) | 359.1601674 (0.1) | 359.097 (0.04) | 359.1601674 | ||||||||||
| Proper motion (declination) | [mas/yr] | -76.64011946 (0.04) | -76.62790112 (0.05) | -76.64 (0.04) | -76.62790112 | ||||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | 17.40 | ||||||||||||||
| V magnitude | 17.12 | ||||||||||||||
| R magnitude | 16.20 | ||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 15.17 (0.01) | 15.18 (0.04) | 15.18 | 15.18 (0.04) | |||||||||||
| H magnitude | 14.85 (0.07) | 14.85 (0.07) | 14.85 | 14.85 (0.07) | |||||||||||
| K magnitude | 14.65 (0.08) | 14.65 (0.08) | 14.65 | 14.65 (0.08) | |||||||||||
| u magnitude | |||||||||||||||
| g magnitude | 17.25 (0.005) | ||||||||||||||
| r magnitude | 16.53 (0.003) | ||||||||||||||
| i magnitude | 16.23 (0.002) | ||||||||||||||
| z magnitude | 16.12 (0.003) | ||||||||||||||
| G magnitude | 16.57 (0.005) | 16.58 | 16.58 | 16.57 | 16.57 (0.003) | 16.58 | |||||||||
| BP magnitude | 17.11 (0.005) | 17.13 | 17.13 | ||||||||||||
| RP magnitude | 15.88 (0.002) | 15.88 | 15.88 | ||||||||||||
| Pan g magnitude | 17.26 (0.02) | 17.25 (0.005) | 17.25 (0.005) | ||||||||||||
| Pan r magnitude | 16.54 (0.009) | 16.53 (0.003) | 16.53 (0.003) | ||||||||||||
| Pan i magnitude | 16.23 (0.004) | 16.23 (0.002) | 16.23 (0.002) | ||||||||||||
| Pan z magnitude | 16.11 (0.0008) | 16.12 (0.003) | 16.12 (0.003) | ||||||||||||
| Pan y magnitude | 16.04 (0.005) | 16.06 (0.004) | 16.06 (0.004) | ||||||||||||
| E(B-V) | 0.001 | ||||||||||||||
* Constant surface field
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