Ross 137
All names: G21-15, USNO-B1.0 0940-00359296, UBV 15673, PLX 4242.02, WD 1824+04, GEN# +9.80021015, LTT 15456, TIC 415132299, GCRV 68202, WDJ182713.09+040346.79, G 141-11, USNO 65, LAWD 69, UBV M 42680, LSPM J1827+0403, WD 1824+040, CSI+04-18247, NLTT 46505, ** FAR 20A, EGGR 125, G 21-15, UBV 15686, Gaia EDR3 4284122782775063552, Gaia DR3 4284122782775063552, Ross 137, USNO-A2.0 0900-12865791, Gaia DR2 4284122782775063552, WDS J18272+0404A, 2MASS J18271307+0403467
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Bedard et al. 2017 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Bergeron et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 18 27 12.82 (0.05) | 18 27 12.83 (0.07) | 18 27 12.82 | 18 27 13.09 (0.05) | 18 27 12.83 | 18 27 14.09 | ||||||||
| Declination | 04 03 42.25 (0.05) | 04 03 42.39 (0.08) | 04 03 42.25 | 04 03 46.79 (0.05) | 04 03 42.39 | 04 03 53.28 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA+DC | DA4 | |||||||
| Effective temperature | [K] | 12622.0 | 12252.0 (190) | 14350.0 (224) | 14787.0 (15) | 12240.0 (680) | 13501.0 (91) | |||||||
| log(g) | [cgs] | 7.32 | 7.70 (0.05) | 7.63 (0.05) | 7.46 (0.003) | 7.00 (0.2) | 7.39 (0.007) | |||||||
| Mass | [M☉] | 0.306 | 0.44 (0.02) | 0.23 (0.03) | 0.333 (0.003) | |||||||||
| log(Luminosity) | [L☉] | -1.89 (0.1) | ||||||||||||
| Cooling age | [Gyr] | 0.1592 | 0.1200 (0.03) | |||||||||||
| 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] | 22.41 (0.06) | 22.42 (0.09) | 18.20 (2) | 22.41 | 22.41 (0.06) | 22.42 (0.09) | 15.00 (7) | ||||||
| Distance | [pc] | 44.63 (0.1) | 44.61 (0.2) | 54.90 (7) | 42.00 | 54.95 (7) | 44.63 | 44.63 (0.1) | 44.61 (0.2) | 66.67 (31) | ||||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -248.951462 (0.06) | -248.997009 (0.1) | -248.951 (0.06) | -248.997009 | |||||||||
| Proper motion (declination) | [mas/yr] | -283.9100029 (0.06) | -284.1641646 (0.2) | -283.91 (0.06) | -284.1641646 | |||||||||
| Variability | NOV | |||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | DDu | |||||||||||||
| B magnitude | 13.98 | 13.98 (0.003) | ||||||||||||
| V magnitude | 13.90 | 13.89 | 13.89 (0.005) | |||||||||||
| R magnitude | 13.94 | 13.93 (0.005) | ||||||||||||
| I magnitude | 13.96 | 13.96 (0.008) | ||||||||||||
| J magnitude | 14.07 | 14.11 (0.03) | ||||||||||||
| H magnitude | 14.14 | 14.11 (0.04) | ||||||||||||
| K magnitude | 14.14 | 14.22 (0.08) | ||||||||||||
| u magnitude | ||||||||||||||
| g magnitude | ||||||||||||||
| r magnitude | ||||||||||||||
| i magnitude | ||||||||||||||
| z magnitude | ||||||||||||||
| G magnitude | 13.92 (0.0009) | 13.94 | 13.92 | 13.92 (0.003) | 13.94 | |||||||||
| BP magnitude | 13.91 (0.0009) | 13.89 | 13.89 | |||||||||||
| RP magnitude | 13.98 (0.001) | 13.98 | 13.98 | |||||||||||
| Pan g magnitude | 13.87 (0.002) | |||||||||||||
| Pan r magnitude | 14.08 (0.002) | |||||||||||||
| Pan i magnitude | 14.31 (0.001) | |||||||||||||
| Pan z magnitude | 14.55 (0.01) | |||||||||||||
| Pan y magnitude | 14.64 (0.004) | |||||||||||||
| E(B-V) | 0.001 | |||||||||||||
* Constant surface field
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