Subgiant · Scorpius
Graffias
Xi Scorpii
Knowledge graphXi ScoHR 5978HD 144070GJ 9540A
Scientific overview
Graffias is a subgiant in the constellation Scorpius (Scorpii), lying about 79.36 light-years from Earth.
Class F. Yellow-white stars, somewhat hotter and more massive than the Sun. Such stars have surface temperatures around 6,000–7,500 K and appear yellow-white to the eye.
Physical properties
| Spectral type | F6 IV-V |
| Luminosity class | IV |
| Apparent magnitude | 4.84 |
| Absolute magnitude | 2.91 |
| Luminosity (Sun = 1) | 5.976 |
| Colour index (B−V) | 0.45 |
| Distance | 79.36 ly (24.33 pc) |
Values are real catalogue data; fields without a reliable value are omitted, never estimated.
Evolution
A subgiant has begun to evolve off the main sequence, brightening and expanding as core hydrogen fusion ends.
Location in the sky
Constellation
Scorpius
Hemisphere
Both (equatorial)
Best seen
Summer (N. evening sky)
RA / Dec
16.0728h / -11.3746°
Knowledge connections
- In constellationScorpius
- System includesXi Scorpii
Related stars in Scorpius
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.