EGGR 84
All names: LTT 13260, G121-22, WIRED J115020.05+251832.1, WDS J11503+2519B, G 121-22, NLTT 28712, WD 1147+253, LAWD 38, WD 1147+25, Gaia EDR3 4005438916307756928, G 148-12, J1150+2518, TIC 138849541, UCAC2 40691564, Gaia DR2 4005438916307756928, PG 1147+256, EGGR 84, USNO 435, 2MASS J11502021+2518331, WD 1147+255, LSPM J1150+2518E, SDSS J115020.04+251832.1, L 1405-40, USNO-B1.0 1153-00187799, GEN# +9.80121022, UBV 10648, SDSS J115020.05+251832.2, SDSS J115020.05+251832.1, GALEX J115020.0+251833, Gaia DR3 4005438916307756928, LP 375-51, ** LDS 928B, CSI+25-11478
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | Gaia DR2 | Bedard et al. 2017 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Zuckerman et al. 2003 | Bergeron et al. 2001 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 50 19.81 (0.04) | 11 50 20.05 | 11 50 19.82 (0.04) | 11 50 19.81 | 11 50 20.17 (0.04) | 11 50 21.26 | 11 50 20.05 | ||||||||||||
| Declination | 25 18 31.03 (0.04) | 25 18 32.18 | 25 18 31.08 (0.05) | 25 18 31.03 | 25 18 32.77 (0.04) | 25 18 19.08 | 25 18 32.19 | ||||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA5 | DA5 | DA | DA | |||||||
| Effective temperature | [K] | 9997.0 (53) | 10135.0 (53) | 9905.0 | 10072.0 (148) | 10310.0 (149) | 9910.0 (11) | 10260.0 | 9790.0 (270) | 10160.0 (79) | 9966.0 (24) | ||||||||
| log(g) | [cgs] | 7.98 (0.007) | 8.00 (0.007) | 7.95 | 8.00 (0.05) | 8.22 (0.05) | 8.05 (0.01) | 8.12 | 7.92 (0.2) | 8.00 (0.01) | 8.18 (0.03) | ||||||||
| Mass | [M☉] | 0.586 (0.006) | 0.602 (0.006) | 0.573 | 0.54 (0.2) | 0.74 (0.03) | 0.55 (0.1) | 0.603 (0.01) | 0.704 (0.02) | ||||||||||
| log(Luminosity) | [L☉] | -2.82 (0.1) | |||||||||||||||||
| Cooling age | [Gyr] | 0.6100 | 0.5824 | 0.5700 (0.2) | |||||||||||||||
| log(H/He) | |||||||||||||||||||
| log(C/He) | |||||||||||||||||||
| log(Ca/He) | |||||||||||||||||||
| log(Ca/H) | <-9.943 | ||||||||||||||||||
| 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] | 19.85 (0.05) | 19.76 (0.05) | 19.76 (0.05) | 19.50 (3) | 19.85 | 19.85 (0.05) | 19.00 (4) | |||||||||||
| Distance | [pc] | 50.39 (0.1) | 50.61 (0.1) | 50.61 (0.1) | 47.40 (9) | 45.00 | 51.28 (8) | 50.39 | 50.39 (0.1) | 52.63 (11) | |||||||||
| Composition | H | H | H | H | H | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -311.3036086 (0.05) | -311.3058565 (0.09) | -311.304 (0.05) | |||||||||||||||
| Proper motion (declination) | [mas/yr] | -108.6702517 (0.05) | -108.6751197 (0.1) | -108.67 (0.05) | |||||||||||||||
| Variability | NOV | ||||||||||||||||||
| Magnetic | |||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||
| Binarity | DDU | ||||||||||||||||||
| B magnitude | 15.81 | 15.78 | |||||||||||||||||
| V magnitude | 15.55 | 15.66 | |||||||||||||||||
| R magnitude | 15.60 | 15.40 | |||||||||||||||||
| I magnitude | 15.53 | ||||||||||||||||||
| J magnitude | 15.62 (0.008) | 15.53 | 15.59 (0.05) | ||||||||||||||||
| H magnitude | 15.57 (0.1) | 15.49 | 15.55 (0.02) | ||||||||||||||||
| K magnitude | 15.69 (0.2) | 15.51 | 15.67 (0.05) | ||||||||||||||||
| u magnitude | 16.07 (0.006) | 16.07 (0.03) | 16.07 (0.006) | 16.08 | 16.07 (0.02) | ||||||||||||||
| g magnitude | 15.63 (0.004) | 15.63 (0.004) | 15.63 | 15.67 (0.02) | |||||||||||||||
| r magnitude | 15.73 (0.004) | 15.73 (0.004) | 15.74 | 15.74 (0.02) | |||||||||||||||
| i magnitude | 15.88 (0.005) | 15.88 (0.005) | 15.88 | 15.86 (0.02) | |||||||||||||||
| z magnitude | 16.05 (0.007) | 16.05 (0.007) | 16.05 | 16.04 (0.02) | |||||||||||||||
| G magnitude | 15.66 (0.003) | 15.70 | 15.66 | 15.66 (0.003) | |||||||||||||||
| BP magnitude | 15.71 (0.003) | ||||||||||||||||||
| RP magnitude | 15.56 (0.003) | ||||||||||||||||||
| Pan g magnitude | 15.66 (0.006) | 15.66 (0.006) | |||||||||||||||||
| Pan r magnitude | 15.74 (0.006) | 15.74 (0.006) | |||||||||||||||||
| Pan i magnitude | 15.88 (0.003) | 15.88 (0.003) | |||||||||||||||||
| Pan z magnitude | 16.04 (0.005) | 16.04 (0.005) | |||||||||||||||||
| Pan y magnitude | 16.15 (0.003) | 16.15 (0.003) | |||||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||||
* Constant surface field
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