EGGR 1
All names: LSPM J0009+3108W, UBV 69, NLTT 431, SDSS J000935.19+310841.0, GEN# +9.80130049, 2MASS J00093550+3108460, G130-49, TIC 22499336, WD 0007+30, WDS J00097+3107B, SDSS J000935.18+310840.9, CSI+30-00070, Gaia DR2 2861792754354276352, J0009+3108, Gaia DR3 2861792754354276352, Gaia EDR3 2861792754354276352, PSO J002.3964+31.1445, LHS 1028, USNO-B1.0 1211-00002346, WD 0007+308, ** GIC 3B, EGGR 1, G 130-49, WDJ000935.46+310844.86
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Bergeron et al. 1997 | Koester et al. 1982a | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 09 35.02 (0.04) | 00 09 35.03 (0.07) | 00 09 35.02 | 00 09 35.46 (0.04) | 00 09 35.03 | 00 09 36.22 | ||||||||||
| Declination | 31 08 38.53 (0.04) | 31 08 38.73 (0.06) | 31 08 38.53 | 31 08 44.86 (0.04) | 31 08 38.73 | 31 08 53.52 | ||||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC: | DC6 | DC6 | |||||||
| Effective temperature | [K] | 7890.0 (46) | 7885.0 (45) | 7960.0 (290) | 8443.0 | 8165.0 | 8200.0 (250) | 7400.0 (500) | 8011.0 (67) | |||||||
| log(g) | [cgs] | 7.96 (0.01) | 7.96 (0.01) | 8.05 (0.1) | 8.21 | 8.12 | 8.00 (0) | 8.02 (0.01) | ||||||||
| Mass | [M☉] | 0.553 (0.008) | 0.55 (0.008) | 0.609 (0.06) | 0.727 | 0.651 | 0.57 | 0.52 (0.2) | 0.586 (0.01) | |||||||
| log(Luminosity) | [L☉] | -3.19 | ||||||||||||||
| Cooling age | [Gyr] | 1.1400 | 1.2120 (0.1) | 1.2850 | 1.2380 | 1.4000 | ||||||||||
| log(H/He) | -3.8 | -3.8 | ||||||||||||||
| log(C/He) | -5 | |||||||||||||||
| 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] | 18.70 (0.06) | 18.64 (0.08) | 18.64 (0.08) | 18.64 (0.08) | 0.02 | 18.70 | 18.70 (0.06) | 18.64 (0.08) | |||||||
| Distance | [pc] | 53.47 (0.2) | 53.65 (0.2) | 53.66 (0.2) | 53.65 (0.2) | 49019.61 | 53.47 | 53.47 (0.2) | 53.65 (0.2) | |||||||
| Composition | He | He | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -359.0918017 (0.06) | -358.9308184 (0.1) | -359.092 (0.06) | -358.9308184 | |||||||||||
| Proper motion (declination) | [mas/yr] | -395.5958265 (0.06) | -395.5477056 (0.1) | -395.596 (0.06) | -395.5477056 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | yes | |||||||||||||||
| B magnitude | 16.99 | 17.10 | ||||||||||||||
| V magnitude | 16.78 | 16.85 | ||||||||||||||
| R magnitude | 16.64 | 15.50 | ||||||||||||||
| I magnitude | 16.46 | |||||||||||||||
| J magnitude | 16.43 (0.03) | 16.45 (0.1) | 16.43 | 16.45 (0.1) | ||||||||||||
| H magnitude | 16.34 (0.03) | 16.19 (0.2) | 16.34 | 16.19 (0.2) | ||||||||||||
| K magnitude | 16.33 (0.03) | 16.33 | ||||||||||||||
| u magnitude | 17.12 (0.03) | 17.12 (0.009) | 17.12 (0.009) | |||||||||||||
| g magnitude | 16.81 (0.004) | 16.78 (0.004) | ||||||||||||||
| r magnitude | 16.74 (0.007) | 16.75 (0.004) | ||||||||||||||
| i magnitude | 16.85 (0.003) | 16.80 (0.005) | ||||||||||||||
| z magnitude | 16.94 (0.005) | 16.84 (0.01) | ||||||||||||||
| G magnitude | 16.71 (0.004) | 16.73 | 16.71 | 16.71 (0.003) | 16.73 | |||||||||||
| BP magnitude | 16.81 (0.004) | 16.80 | 16.80 | |||||||||||||
| RP magnitude | 16.52 (0.005) | 16.52 | 16.52 | |||||||||||||
| Pan g magnitude | 16.81 (0.002) | 16.81 (0.004) | 16.81 (0.004) | |||||||||||||
| Pan r magnitude | 16.77 (0.0005) | 16.74 (0.007) | 16.74 (0.007) | |||||||||||||
| Pan i magnitude | 16.83 (0.004) | 16.85 (0.003) | 16.85 (0.003) | |||||||||||||
| Pan z magnitude | 16.95 (0.004) | 16.94 (0.005) | 16.94 (0.005) | |||||||||||||
| Pan y magnitude | 17.00 (0.006) | 17.01 (0.01) | 17.01 (0.01) | |||||||||||||
| E(B-V) | 0.003 | |||||||||||||||
* Constant surface field
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