HR 1105
Scientific overview
HR 1105 is a main-sequence star in the constellation Camelopardalis (Camelopardalis), lying about 519.4 light-years from Earth.
Class S. Cool giant stars intermediate between class M and the carbon stars, showing zirconium-oxide bands in their spectra. Such stars have surface temperatures around ≤ 3,500 K and appear red to the eye.
Physical properties
| Spectral type | S5.3 SB: |
| Apparent magnitude | 5.06 |
| Absolute magnitude | -0.95 |
| Luminosity (Sun = 1) | 209 |
| Colour index (B−V) | 1.651 |
| Distance | 519.4 ly (159.24 pc) |
Values are real catalogue data; fields without a reliable value are omitted, never estimated.
Precision measurements
Astrometry and astrophysics from SIMBAD
| Parallax | 4.2671 ± 0.2581 mas | SIMBAD · measured |
| Proper motion (RA) | -17.877 mas/yr | SIMBAD · measured |
| Proper motion (Dec) | 20.052 mas/yr | SIMBAD · measured |
| Radial velocity | -22.28 ± 0.14 km/s | SIMBAD · measured |
| Spectral type | S3.5/2 | SIMBAD · catalogued |
| Right ascension (ICRS) | 55.5389 deg | SIMBAD · measured |
| Declination (ICRS) | 63.2168 deg | SIMBAD · measured |
Full field-level provenance
- Parallax: Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · plx_value · 2020yCat.1350....0G · direct catalogue measurement · retrieved 2026-07-11
- Proper motion (RA): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · pmra · 2020yCat.1350....0G · direct catalogue measurement · retrieved 2026-07-11
- Proper motion (Dec): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · pmdec · 2020yCat.1350....0G · direct catalogue measurement · retrieved 2026-07-11
- Radial velocity: Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · rvz_radvel · 2004A&A...424..727P · direct catalogue measurement · retrieved 2026-07-11
- Spectral type: Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · sp_type · 1980ApJS...43..379K · catalogue identifier/value · retrieved 2026-07-11
- Right ascension (ICRS): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · ra · 2020yCat.1350....0G · direct catalogue measurement · retrieved 2026-07-11
- Declination (ICRS): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · dec · 2020yCat.1350....0G · direct catalogue measurement · retrieved 2026-07-11
measured = direct catalogue value · estimated = Bayesian inference (Bailer-Jones distance) · modeled = model output (Gaia GSP-Phot). Fields a source did not provide are omitted, never invented.
Evolution
A main-sequence star fuses hydrogen into helium in its core. It will remain on the main sequence for most of its life before evolving into a giant.
Location in the sky
Knowledge connections
- In constellationCamelopardalis
Related stars in Camelopardalis
Sources
The primary and reference sources this topic draws on.
- HYG DatabaseHYG Database (Hipparcos + Yale Bright Star + Gliese), by D. Nash / astronexus
Aggregated, openly-licensed star catalogue combining Hipparcos, the Yale Bright Star Catalogue, and the Gliese Catalogue of Nearby Stars.
- HipparcosESA Hipparcos space astrometry mission
High-precision parallax, magnitude, and position for ~118,000 stars.