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Common variable star 17 EP

70 Oph

RA 271.3637° · Dec 2.5001° · star

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Score breakdown

· 2 badges
17 pts · Common
Common 24 pts → Uncommon
  • Nearby (<25 ly) +12
  • Variable star +5
Total score 17

7 more points to reach Uncommon.

Badges

  • Variable star · +5
  • Nearby (<25 ly) · +12

Trivia

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 291.4 thousand years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 25.9 thousand years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 166 years in a starship at a tenth of light speed.
  • Distance. 16.6 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 2009.

Saying hello

  • Say hello. A radio message and its reply would take 33.2 years round-trip.

Properties

absmag
5.499
bv
0.86
constellation
Oph
dist ly
16.5798
mag
4.03
name
70 Oph
spect
K0V SB

About 70 Oph

70 Oph is a common variable star. It lies about 16.6 light-years from Earth, sits in the constellation Oph, shines at apparent magnitude 4.03 and has spectral type K0V SB.

70 Oph is a common variable star worth 17 points across 2 science badges. Explore its facts, badges and place on the sky map, then add it to your dex on Spacedle.

How to see it

Look for 70 Oph in the constellation Oph. At apparent magnitude 4.03, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 70 Oph 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 70 Oph is a common variable star

70 Oph scores 17 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.

That score comes from 2 science badges — Variable star and Nearby (<25 ly) — 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.

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Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.