L 98-59
觀測資料 曆元 | |
---|---|
星座 | 飛魚座 |
星官 | |
赤經 | 8h 18m 7.896s |
赤緯 | -68° 18′ 52.247″ |
視星等(V) | 11.7 |
特性 | |
演化阶段 | 主序星 |
光谱分类 | M3V C |
变星类型 | 9.6 |
天体测定 | |
视差 (π) | 94.266 ± 0.27 mas |
距离 | 34.60 ± 0.10 ly (10.61 ± 0.03 pc) |
绝对星等 (MV) | 11.6 |
詳細資料 [1] | |
L 98-59 | |
質量 | 0.32 M☉ |
半徑 | 0.29 R☉ |
溫度 | 3469 K |
其他命名 | |
參考資料庫 | |
SIMBAD | 资料 |
L 98-59,是一顆位於飛魚座附近的紅矮星,距離地球約34.6光年。[2]
行星系統
這顆恆星擁有四個已知行星[3]。
成員 (依恆星距離) | 质量 | 半長軸 (AU) | 轨道周期 (天) | 離心率 | 傾角 | 半径 |
---|---|---|---|---|---|---|
b | 6999400000000000000♠0.40+0.16 −0.15 M⊕ | 6998219100000000000♠0.02191+0.00080 −0.00084 | 7000225311359999999♠2.2531136+0.0000012 −0.0000015 | 6999103000000000000♠0.103+0.117 −0.045 | 7001877099999999999♠87.71+1.16 −0.44° | 6999850000000000000♠0.85+0.061 −0.047 R⊕ |
c | 7000222000000000000♠2.22+0.26 −0.25 M⊕ | 6998304000000000000♠0.0304+0.0011 −0.0012 | 7000369067770000000♠3.6906777+0.0000016 −0.0000026 | 6999103000000000000♠0.103+0.045 −0.058 | 7001881100000000000♠88.11+0.36 −0.16° | 7000138500000000000♠1.385+0.095 −0.075 R⊕ |
d | 7000194000000000000♠1.94±0.28 M⊕ | 6998486000000000000♠0.0486+0.0019 −0.0019 | 7000745072450000000♠7.4507245+0.0000081 −0.0000046 | 6998740000000000000♠0.074+0.057 −0.046 | 7001884490000000000♠88.449+0.058 −0.111° | 7000152100000000000♠1.521+0.119 −0.098 R⊕ |
e | >7000306000000000000♠3.06+0.33 −0.37 M⊕ | 6998717000000000000♠0.0717+0.0060 −0.0048 | 7001127960000000000♠12.796+0.020 −0.019 | 6999128000000000000♠0.128+0.108 −0.076 | — | — |
f (未确认) | >7000246000000000000♠2.46+0.66 −0.82 M⊕ | 6999103400000000000♠0.1034+0.0042 −0.0044 | 7001231500000000000♠23.15+0.60 −0.17 | 6999210000000000000♠0.21+0.17 −0.11 |
參考
- ^ Cloutier, R.; Astudillo-Defru, N.; Bonfils, X.; Jenkins, J. S.; Berdiñas, Z.; Ricker, G.; Vanderspek, R.; Latham, D. W.; Seager, S.; Winn, J.; Jenkins, J. M. Characterization of the L 98-59 multi-planetary system with HARPS - Mass characterization of a hot super-Earth, a sub-Neptune, and a mass upper limit on the third planet. Astronomy & Astrophysics. 2019-09-01, 629: A111 [2023-04-17]. Bibcode:2019A&A...629A.111C. ISSN 0004-6361. S2CID 166228063. arXiv:1905.10669 . doi:10.1051/0004-6361/201935957. hdl:1721.1/125703 . (原始内容存档于2021-09-19) (英语).
- ^ REINERS A.; ZECHMEISTER M. Radial velocity photon limits for the dwarf stars of spectral classes F-M.. 天文期刊. 2021, 247 (1): 14. Bibcode:2020ApJS..247...11R. S2CID 208910700. arXiv:1912.04120 . doi:10.3847/1538-4365/ab609f.
- ^ 3.0 3.1 Demangeon, Oliver D. S.; Zapatero Osorio, M. R.; Alibert, Y.; Barros, S. C. C.; Adibekyan, V.; Tabernero, H. M.; et al. A warm terrestrial planet with half the mass of Venus transiting a nearby star (PDF). Astronomy & Astrophysics. July 2021, 653: 38 [2023-04-17]. Bibcode:2021A&A...653A..41D. S2CID 236957385. arXiv:2108.03323 . doi:10.1051/0004-6361/202140728. (原始内容存档 (PDF)于2021-11-13).
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