娄宿增七
娄宿增七,即白羊座10 (10 Ari),是一个位于白羊座的恒星系统,距离地球约172光年。
| 觀測資料 曆元 J2000.0 分點 J2000.0 (ICRS) | ||
| 星座 | 白羊座 | |
| Component | A | B |
| 赤經 | 02h 03m | 02h 03m |
| 39.344s | 39.308s | |
| 赤緯 | +25° 56′[1] | +25° 56′[2] |
| 07.70″ | 08.78″ | |
| 視星等 (V) | 5.82[3] | 7.87[3] |
| 特徵 | ||
| 光譜類型 | F8IV[4] | F9V[4] |
| U-B 色指數 | +0.02[4] | |
| B-V 色指數 | +0.54[4] | |
| 天體測量 | ||
| 自行: | ||
| 赤經 (μα cos δ) | 125.66[1] mas/yr | 133.13[2] mas/yr |
| 赤緯 (μδ) | 9.27[1] mas/yr | 31.51[2] mas/yr |
| 視差 (π) | 18.90 ± 0.71[5] mas | |
| 距離 | 173 ± 6 ly (53 ± 2 pc) | |
| 軌道[6] | ||
| 週期 (P) | 325 yr | |
| 半長軸 (a) | 1.39″ | |
| 離心率 (e) | 0.59 | |
| 傾角 (i) | 51° | |
| 經度交點 (Ω) | 20.5° | |
| 近星點 曆元 (T) | B1931.6 | |
| 近星點引數 (ω) (secondary) | 165° | |
| Database references | ||
| SIMBAD | data | |
| 其他名稱 | ||
伴星
娄宿增七拥有一颗伴星CCDM J02037+2556C,离联星系统95.0角秒。目前尚未确定这颗恒星是目视双星还是物理双星[7]。
| 觀測資料 曆元 J2000.0 | |
|---|---|
| 星座 | 白羊座 |
| 星官 | |
| 赤經 | 02h 03m 43.1s[8] |
| 赤緯 | +25° 54′ 47″[8] |
| 視星等(V) | 13.5[8] |
| 位置(相對於AB) | |
| 觀測曆元 | 1998 |
| 角距離 | 95.0″ [7] |
| 位置角 | 150° [7] |
| 參考資料庫 | |
| SIMBAD | 资料 |
| 其他命名 | |
参考资料
- HIP 9621, record for component 1, Hipparcos catalogue; CDS ID I/239.
- HIP 9621, record for component 2, Hipparcos catalogue; CDS ID I/239.
- Entry, WDS identifier 02037+2556, discoverer identifier STF 208AB, The Washington Double Star Catalog 的存檔,存档日期2006-02-20., U. S. Naval Observatory. Accessed on line August 21, 2008.
- HR 605, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line August 21, 2008.
- CCDM J02037+2556AB -- Double or multiple star, database entry, SIMBAD. Accessed on line August 21, 2008.
- Entry, WDS identifier 02037+2556, Sixth Catalog of Orbits of Visual Binary Stars, William I. Hartkopf & Brian D. Mason, U.S. Naval Observatory. Accessed on line August 21, 2008.
- Entry, WDS identifier 02037+2556, discoverer identifier STF 208AB-C, The Washington Double Star Catalog 的存檔,存档日期2006-02-20., U. S. Naval Observatory. Accessed on line August 21, 2008.
- BD+25 341C -- Star in double system, database entry, SIMBAD. Accessed on line August 21, 2008.
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