HD 23356, an orange dwarf star in Eridanus
HD 23356 is an orange dwarf star in the constellation Eridanus. At 45 light years away, it shines at an apparent visual magnitude of 7.1.
HD 23356 (HIP 17420)
HD 23356 is an orange dwarf star in the constellation Eridanus. At 45 light years away, it shines at an apparent visual magnitude of 7.10. The iron abundance of HD 23356 is -0.07 (85.1% of the Sun). It is moving through the Galaxy at a speed of 34.2 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,300 and 26,200 light years from the center of the Galaxy. It came closest to the Sun 295,000 years ago when it had brightened to magnitude 6.24 from a distance of 31 light years.
Sky position: RA 3h 43.9m, Dec -19° 6.6'
Common designations: HIP 17420, HD 23356
New astronomy book
explores our Galaxy!
Vistas of Many Worlds
On sale now!
Galactic Orbit of
HD 23356
(compared to the
Sun)
E
ccentricity: 7.9% vs. 16.0%Angle φ : -91.6°vs. 26.0°
Semi-major axis : 7,438 pc vs. 8,686 pc
Semi-minor axis: 7,415 pc vs. 8,574 pc
Focus-to-center
: 584 pcvs. 1,388 pcSemilatus rectum : 7,392 pc vs. 8,464 pc
Perigalacticon: 6,854 pc vs. 7,297 pc
Apogalacticon
: 8,022 pcvs. 10,074 pcSome Tabulated XHIP Data for HD 23356
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 55.97979809° ±0.57 mas | 309.70 ±0.61 mas/yr. |
| Declination: | -19.11127982° ±0.49 mas | 157.58 ±0.60 mas/yr. |
| Galactic Longitude: | 210.88337023° | -43.78 mas/yr. |
| Galactic Latitude: | -49.73885474° | 344.71 mas/yr. |
Parallax: 71.69 ± 0.67 mas
Spectrography
Spectral Type: K2.5V 2006AJ....132..161G.
Radial Velocity: 25.32 ±0.10 km/s [A rating] 2002ApJS..141..503N, 2005ApJS..159..141V.
Iron Abundance [Fe/H]:
-0.07 ±0.01 dex
2008A&A...487..373S, 2007A&A...465..271R, 2006ApJ...652.1604B, 2006AJ....131.3069L, 2005ApJS..161..444T, 2005ApJS..159..141V, 2005AJ....129.1063L, 2004A&A...420..183A, 2004A&A...415.1153S, 2001A&A...373.1019S.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 8.03 | 7.30 |
| V | 7.10 | 6.38 |
| R | ||
| I | 6.23 | 5.51 |
| J | 5.46 | 4.73 |
| H | 5.03 | 4.30 |
| K | 4.84 | 4.11 |
B-V: +0.93 V-I: +0.87
Derivations
Heliocentric distance: 13.95 pc (0.9% margin of error)
Galactocentric distance: 7,408 pc
Transverse velocity: 23.0 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | -7.7 pc | -4.6 pc | -10.6 pc |
| Velocity (U, V, W) | -30.5 km/s | -14.8 km/s | -4.6 km/s |