55 Cancri b
55 Cancri b adalah planet luar suria yang mengorbit bintang serupa dengan Matahari 55 Cancri A setiap 14.65 hari.
| Planet luar suria | Senarai | |
|---|---|---|
| Bintang induk | ||
| Bintang | 55 Cancri A | |
| Buruj | Cancer | |
| Jarak hamal | (α) | 08j 52m 35.8s |
| Keserongan | (δ) | +28° 19′ 51″ |
| Magnitud ketara | (mV) | 5.95 |
| Jarak | 40.3 ± 0.4 ly (12.3 ± 0.1 pc) | |
| Jenis spektrum | G8V | |
| Jisim | (m) | 0.95 ± 0.10 M? |
| Jejari | (r) | 1.152 ± 0.035 R? |
| Suhu | (T) | 5373 ± 9.7 K |
| Kelogaman | [Fe/H] | 0.29 |
| Umur | 7.4–8.7 Gtahun | |
| Unsur orbit | ||
| Paksi semimajor | (a) | 0.115 ± 0.0000011[1] AU (17.2 Gm) |
| 9.18 mas | ||
| Periastron | (q) | 0.113 AU (16.9 Gm) |
| Apastron | (Q) | 0.116 AU (17.4 Gm) |
| Kesipian | (e) | 0.014 ± 0.008[1] |
| Tempoh orbit | (P) | 14.65162 ± 0.0007[1] h (0.04011325 y) |
| Hujah periastron |
(?) | 131.94 ± 30[1]° |
| Masa periastron | (T0) | 2,450,002.94749 ± 1.2[1] JD |
| Semiamplitud | (K) | 71.32 ± 0.41[1] m/s |
| Ciri fizikal | ||
| Jisim minimum | (m sin i) | 0.824 ± 0.007[1] MJ |
| Maklumat penemuan | ||
| Tarikh penemuan | 12 April 1996 | |
| Penemu | Butler, Marcy | |
| Kaedah pengesanan | Halaju Jejarian | |
| Tempat penemuan | California, USA | |
| Status penemuan | Published | |
| Designasi lain | ||
55 Cancri Ab, Rho1 Cancri b, HD 75732 b
| ||
| Rujukan pangkalan data | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
Rujukan sunting
Pautan luar sunting
- Jean Schneider (2011). "Notes for Planet 55 Cnc b". Extrasolar Planets Encyclopaedia. Dicapai pada 8 October 2011.
- Extrasolar Visions: 55 Cancri b
