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Trash star 11 EP

HD 29907

RA 69.5908° · Dec -65.4160° · star

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Score breakdown

· 2 badges
11 pts · Trash
Trash 15 pts → Common
  • Sun-like G-type star +8
  • Star +3
Total score 11

4 more points to reach Common.

Badges

  • Star · +3
  • Sun-like G-type star · +8

Trivia

What it actually is

  • Spectral class. Its spectrum reads sdG4 — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a subdwarf: an old, metal-poor star from the galaxy's early days, a little smaller and fainter than a main-sequence star of the same colour.

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 9.8 you'll want a small backyard telescope, over in Dorado.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around November — 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. ≈ 3.3 million years at Voyager 1's speed (17 km/s).

Properties

absmag
6.036
bv
0.639
constellation
Dor
dist ly
188.857
luminosity
0.3354
mag
9.85
name
HD 29907
spect
sdG4

About HD 29907

HD 29907 is a trash star. It lies about 188.9 light-years from Earth, sits in the constellation Dor, shines at apparent magnitude 9.85 and has spectral type sdG4.

Its spectrum reads sdG4 — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 29907 in the constellation Dor. At apparent magnitude 9.85, a small backyard telescope will bring it into view.

Like any astronomical target, HD 29907 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 29907 is a trash star

HD 29907 scores 11 points on Spacedle's rarity scale, which places it in the trash tier. Another 4 points would lift it into a rarer tier.

That score comes from 2 science badges — Star and Sun-like G-type 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.