About BD+48 740 b
BD+48 740 b is an uncommon exoplanet. It lies about 2,174.1 light-years from Earth, has an equilibrium temperature near 539 K, spans roughly 13.5 Earth radii and weighs about 540.31 Earth masses.
About 13.5× the width of Earth.
Uncommon exoplanet 28 EP
BD+48 740 b
RA 40.7425° · Dec 48.9301° · exoplanet
Score breakdown
· 4 badgesUncommon 33 pts → Rare
- Distant (>1000 ly) +10
- Eccentric orbit +9
- Confirmed exoplanet +5
- Gas giant +4
Total score 28
5 more points to reach Rare.
Badges
- Confirmed exoplanet · +5
- Gas giant · +4
- Eccentric orbit · +9
- Distant (>1000 ly) · +10
Trivia
Could we get there?
- Verdict. Impossible with our current technology — and the next millennium of it.
Getting there
- Aboard Voyager 1. ≈ 38.2 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 3.4 million years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 21.7 thousand years in a starship at a tenth of light speed.
- Distance. 2174 light-years from Earth.
Look-back time
- Look-back time. Its light left before the last ice age ended.
Saying hello
- Say hello. A radio message and its reply would take 4348 years round-trip.
Standing on it
- A year here. A full year lasts about 2 Earth years.
By the numbers
- Size. About 13.5× the width of Earth.
- Volume. About 2460 Earths could fit inside it.
- Mass. Roughly 540× Earth's mass — about 1.7 Jupiters.
- Your weight. You'd weigh about 3.0× your Earth weight standing here.
- Temperature. A scorching 266°C on average.
How we found it
- Discovery. Found by Multiple Observatories using the radial velocity method.
Properties
- density gcc
- 1.21
- discovery facility
- Multiple Observatories
- discovery method
- Radial Velocity
- dist ly
- 2174.12
- eccentricity
- 0.76
- eq temp k
- 538.94
- insolation
- 15.1044
- mass earth
- 540.311
- name
- BD+48 740 b
- orbital period days
- 733
- radius earth
- 13.5
- sys num planets
- 1
How to see it
Like any astronomical target, BD+48 740 b 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 BD+48 740 b is an uncommon exoplanet
BD+48 740 b scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.
That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Eccentric orbit and Distant (>1000 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.