Uncommon variable star 25 EP

HD 101906

RA 175.9460° · Dec 24.0103° · star

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Score breakdown

· 6 badges

25 pts · Uncommon

Uncommon 34 pts → Rare

Sun-like G-type star +8
Variable star +5
Gently variable +4
On the zodiac +3
A named variable star +3
Main-sequence star +2

Total score 25

9 more points to reach Rare.

Badges

Variable star · +5
On the zodiac · +3
Sun-like G-type star · +8
Main-sequence star · +2
Gently variable · +4
A named variable star · +3

Trivia

What it actually is

Spectral class. Its spectrum reads G2V — a G-type star: the very same spectral class as our own Sun.
Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.
It changes. This star does not hold still: its brightness rises and falls on a rhythm of hours, days or years, either pulsing in size or being eclipsed by a companion.

Sense of scale

In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

How to spot it. At magnitude 7.4 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Leo.
Northern sky. It rides the northern half of the sky — an easier target the further north you are.
Best time of year. It stands highest in the middle of the night around March — that's when to go looking.

Could we get there?

Verdict. Hopelessly far for any craft humanity can build today.

Properties

absmag: 0.617
bv: 0.874
constellation: Leo
dist ly: 741.2635
luminosity: 49.3401
mag: 7.4
name: HD 101906
spect: G2V
var amplitude: 0.07
var designation: HL
var max: 7.36
var min: 7.43

Nearby objects

About HD 101906

HD 101906 is an uncommon variable star. It lies about 741.3 light-years from Earth, sits in the constellation Leo, shines at apparent magnitude 7.4 and has spectral type G2V.

Its spectrum reads G2V — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 101906 in the constellation Leo. At apparent magnitude 7.4, it is an easy target for binoculars.

Like any astronomical target, HD 101906 is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why HD 101906 is an uncommon variable star

HD 101906 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, On the zodiac, Sun-like G-type star, Main-sequence star, Gently variable and A named variable star — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.