Eta3 Fornacis - Misplaced Pages

Star in the constellation Fornax

η Fornacis
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Location of η Fornacis (top star inside circle)
Constellation	Fornax
Right ascension	02 50 40.407
Declination	−35° 40′ 33.06″
Apparent magnitude (V)	5.47
Characteristics
Evolutionary stage	giant
Spectral type	K2III
U−B color index	+1.31
B−V color index	+1.25
Astrometry

Radial velocity (R_v)	13.10±0.12 km/s
Proper motion (μ)	RA: +4.093 mas/yr Dec.: −54.551 mas/yr
Parallax (π)	6.6631 ± 0.0580 mas
Distance	489 ± 4 ly (150 ± 1 pc)
Absolute magnitude (M_V)	−0.26

Details

Mass	3.7 `M`_☉
Radius	21.9 `R`_☉
Luminosity	249 `L`_☉
Surface gravity (log g)	2.27 cgs
Temperature	4,717 K
Metallicity	0.156 dex
Rotational velocity (v sin i)	<1 km/s
Age	217 Myr

Other designations
η For, CD−36°1070, HD 17829, HIP 13265, HR 848, SAO 193944
Database references
SIMBAD	data

Eta Fornacis (η Fornacis) is an orange giant in the constellation of Fornax. The star has a spectral type of K2III and an apparent magnitude of 5.47. The star is visually close to, but unrelated with the similar stars η Fornacis and η Fornacis. The star is located at approximately 489 light years away with a luminosity of about 249 L_☉, and is a suspected binary system with the primary being the orange giant.

References

^ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ Hoffleit, D.; Warren, Jr., W. H. (1991). The Bright Star Catalogue (5th Revised ed.). New Haven: Astronomical Data Center, NSSDC/ADC. Bibcode:1964cbs..book.....H.
Houk, Nancy; Smith-Moore, M. (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 3. Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan. Bibcode:1982mcts.book.....H.
Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars: V. Southern stars⋆⋆⋆". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN 0004-6361.
"* eta03 For". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-09-28.
^ "η3 Fornacis (eta3 Fornacis)". The Sky Live. Retrieved 28 September 2023.
"Eta3 Fornacis Star Facts (Distance, Colour etc.)". Universe Guide. 25 January 2015. Retrieved 28 September 2023.

Constellation of Fornax

Stars

Bayer	α (Dalim) β γ γ δ ε ζ η η η ι ι κ λ λ μ ν π ρ σ τ υ φ χ χ χ ψ ω
Variable	R TZ UZ
HR	683 858
HD	15337 20781 20782 20868 (Intan)
Other	2MASS J02431371−2453298 HIP 13044 LP 944-20 UDF 2457 WASP-72 (Diya)

Exoplanets	HD 16417 b HD 20781 b c d e HD 20782 b HD 20868 b (Baiduri) TOI-849 b

Star clusters	NGC 1049

Nebulae	NGC 1360

Galaxies

NGC	823 824 922 986 1097 1210 1255 1288 1310 1316 1317 1318 1326 1350 1365 1374 1375 1379 1380 1381 1387 1398 1399 1406 1425 1427
Other	Fornax Dwarf HUDF-JD2 GS-NDG-9422 IC 335 IC 1993 JADES-GS-z14-0 JADES-GS-z7-01-QU MRC 0316-257 PGC 13809 UDF 423 UDFj-39546284 UDFy-38135539

Galaxy clusters	Fornax Cluster

Astronomical events	SN 1992bd SN 1999eu SN 2003B