| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 38m 22.14533s[1] |
| Declination | −07° 53′ 51.2116″[1] |
| Apparent magnitude (V) | 6.23[2] (6.64/8.11)[3] |
| Characteristics | |
| Spectral type | K0III + F2[4] |
| U−B color index | +0.49[2] |
| B−V color index | +0.78[2] |
| Variable type | Suspected[5] |
| Astrometry | |
| Radial velocity (Rv) | −18.34±0.27[6] km/s |
| Proper motion (μ) | RA: +74.25[1] mas/yr Dec.: −0.98[1] mas/yr |
| Parallax (π) | 8.38 ± 0.62 mas[1] |
| Distance | 390 ± 30 ly (119 ± 9 pc) |
| Absolute magnitude (MV) | 0.498[6] |
| Orbit[5] | |
| Period (P) | 147.07±8.09 yr |
| Semi-major axis (a) | 0.249±0.051″ |
| Eccentricity (e) | 0.44±0.37 |
| Inclination (i) | 73.6±6.2° |
| Longitude of the node (Ω) | 110.3±3.3° |
| Argument of periastron (ω) (secondary) | 191.9±14.7° |
| Details | |
| Temperature | 5,645[7] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) | |
HD 214448 is a binary star system in the equatorial constellation of Aquarius. They orbit each other with a period of around 147 years. The combined mass of the pair is twice that of the Sun.[5]
References
[edit]- ^ a b c d e van Leeuwen, F. (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, S2CID 18759600
- ^ a b c Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N
- ^ Malkov, O. Yu.; et al. (2012), "Dynamical Masses of a Selected Sample of Orbital Binaries", Astronomy & Astrophysics, 546: 5, Bibcode:2012A&A...546A..69M, doi:10.1051/0004-6361/201219774, A69
- ^ Abt, H. A. (September 1985), "Visual multiples. VIII - 1000 MK types", Astrophysical Journal Supplement Series, 59: 95–112, Bibcode:1985ApJS...59...95A, doi:10.1086/191064
- ^ a b c Olevic, D.; Cvetkovic, Z. (2004), "Orbits of 6 Binaries", Serbian Astronomical Journal, 168 (168): 25–36, Bibcode:2004SerAJ.168...25O, doi:10.2298/saj0468025o
- ^ a b Soubiran, C.; et al. (March 2008), "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants", Astronomy and Astrophysics, 480 (1): 91–101, arXiv:0712.1370, Bibcode:2008A&A...480...91S, doi:10.1051/0004-6361:20078788, S2CID 16602121
- ^ Muñoz Bermejo, J.; et al. (May 2013), "A PCA approach to stellar effective temperatures", Astronomy and Astrophysics, 453: A95, arXiv:1303.7218, Bibcode:2013A&A...553A..95M, doi:10.1051/0004-6361/201220961, S2CID 67752733.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction