7 Piscium
7 Piscium (7 Psc) merupakan salah satu bintang di rasi Pisces. Bintang ini merupakan bintang dengan tipe K2III dan bermagnitudo 5.05. Bintang ini berada pada 341 tahun cahaya dari Bumi.
| Data pengamatan Epos J2000.0 Ekuinoks J2000.0 | |
|---|---|
| Rasi bintang | Pisces |
| Asensio rekta | 23j 20m 20.58314d[1] |
| Deklinasi | 5° 22′ 52.7012″[1] |
| Magnitudo tampak (V) | 5.069[2] |
| Ciri-ciri | |
| Kelas spektrum | K1 IV[3] |
| Indeks warna U−B | +1.12[4] |
| Indeks warna B−V | +1.20[4] |
| Astrometri | |
| Gerak diri (μ) | RA: 78.47[1] mdb/thn Dek.: −60.00[1] mdb/thn |
| Paralaks (π) | 7,54±0,40[1] mdb |
| Jarak | 430 ± 20 tc (133 ± 7 pc) |
| Detail[5] | |
| Gravitasi permukaan (log g) | 1.81 ± 0.28 |
| Suhu | 4314 ± 80 K |
| Metalisitas [Fe/H] | −0.71 ± 0.12 |
| Penamaan lain | |
BD+04 4997, FK5 3871, HD 220009, HIP 115227, SAO 128126, HR 8878 | |
| Referensi basis data | |
| SIMBAD | data |
Asterisma
Selain rasi Pisces, bintang ini merupakan bagian dari:
| nama rasi / asterisma / kelompok | asal | arti | anggota lainnya |
|---|---|---|---|
| Circlet | Inggris | lingkaran | γ Psc, ι Psc, θ Psc, λ Psc, κ Psc, 19 Psc, 9 Psc |
Referensi
- van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. - Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
- Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
- Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
- Prugniel, Ph.; et al. (July 2011), "The atmospheric parameters and spectral interpolator for the MILES stars", Astronomy & Astrophysics, 531: A165, arXiv:1104.4952
, Bibcode:2011A&A...531A.165P, doi:10.1051/0004-6361/201116769.
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