| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 20h 20m 00.45867s[2] |
| Declination | +04° 37′ 56.5198″[2] |
| Apparent magnitude (V) | 13.2[3] |
| Characteristics | |
| Spectral type | sdOB / M V[3] |
| Astrometry | |
| Radial velocity (Rv) | 12.10 ± 1.5[4] km/s |
| Proper motion (μ) | RA: 8.063[2] mas/yr Dec.: 1.133[2] mas/yr |
| Parallax (π) | 1.1929 ± 0.0599 mas[2] |
| Distance | 2,700 ± 100 ly (840 ± 40 pc) |
| Orbit[1] | |
| Period (P) | 0.110374230 d |
| Inclination (i) | 82.5° |
| Periastron epoch (T) | 2454274.20874 JD |
| Details[3] | |
| Mass | 0.528 M☉ |
| Temperature | 42,000 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
NSVS 14256825, also known as V1828 Aquilae, is an eclipsing binary system (of the Algol type) in the constellation of Aquila. The system comprises a subdwarf OB star and red dwarf star. The two stars orbit each other every 2.648976 hours.[1] Based on the stellar parallax of the system, observed by Gaia, the system is located approximately 2,700 light-years (840 parsecs) away.[2]
- ^ a b c Almeida, L. A.; Jablonski, F.; Tello, J.; Rodrigues, C. V. (2012). "A photometric and spectroscopic study of NSVS 14256825: the second sdOB+dM eclipsing binary". Monthly Notices of the Royal Astronomical Society. 423 (1): 478–485. arXiv:1203.1266. Bibcode:2012MNRAS.423..478A. doi:10.1111/j.1365-2966.2012.20891.x. S2CID 119177743.
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
- ^ a b c "Notes on NSVS 1425 (AB) b". Extrasolar Planets Encyclopaedia. Retrieved 26 November 2016.
- ^ Kupfer, T.; Geier, S.; Heber, U.; Østensen, R. H.; Barlow, B. N.; Maxted, P. F. L.; Heuser, C.; Schaffenroth, V.; Gänsicke, B. T. (2015). "Hot subdwarf binaries from the MUCHFUSS project. Analysis of 12 new systems and a study of the short-period binary population". Astronomy and Astrophysics. 576: A44. arXiv:1501.03692. Bibcode:2015A&A...576A..44K. doi:10.1051/0004-6361/201425213. S2CID 53724563.
- ^ "NSVS 14256825". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-16.