← Back to dex
Trash star 12 EP

HR 3697

RA 140.1824° · Dec 51.2661° · star

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 4 badges
12 pts · Trash
Trash 15 pts → Common
  • Never sets (northern circumpolar) +4
  • Star +3
  • Yellow-white F-type star +3
  • Main-sequence star +2
Total score 12

3 more points to reach Common.

Badges

  • Star · +3
  • Never sets (northern circumpolar) · +4
  • Yellow-white F-type star · +3
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads F3V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 6.1 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Ursa Major.
  • 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 February — that's when to go looking.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 1.6 million years at Voyager 1's speed (17 km/s).

Properties

absmag
3.947
bv
0.436
constellation
UMa
dist ly
89.5295
luminosity
2.2972
mag
6.14
name
HR 3697
spect
F3V

About HR 3697

HR 3697 is a trash star. It lies about 89.5 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 6.14 and has spectral type F3V.

Its spectrum reads F3V — an F-type star — a little hotter, whiter and shorter-lived than the Sun.

How to see it

Look for HR 3697 in the constellation UMa. At apparent magnitude 6.14, it is an easy target for binoculars.

Like any astronomical target, HR 3697 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 HR 3697 is a trash star

HR 3697 scores 12 points on Spacedle's rarity scale, which places it in the trash tier. Another 3 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Never sets (northern circumpolar), Yellow-white F-type star and Main-sequence 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.