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swap_horiz HD 40307 b Alternatives

Looking for alternatives to HD 40307 b? Compare the top Exoplanet options ranked by our AI scoring system.

You're looking at alternatives to:
HD 40307 b

HD 40307 b

Exoplanet Hot Radial Velocity Super Earth Multi Planet K Star

HD 40307 b is a radial-velocity exoplanet orbiting the K-type star HD 40307, about 42 light-years away. With a minimum mass of roughly four Earth masses and an orbital period of about 4.3 days, it is the innermost of the three planets reported in the system's original 2008 discovery. Its short orbit...

6.8 Fair

apps Top HD 40307 b Alternatives

The top alternative to HD 40307 b in 2026 is Gliese 876 d with a score of 7.8/10, followed by Gliese 581 e (7.6) and HD 40307 g (7.4).

1
Gliese 876 d

Gliese 876 d

Gliese 876 d is a super-Earth exoplanet orbiting the red dwarf star Gliese 876, located approximately 15 light-years fro...

Hot Rocky Radial Velocity Super Earth
7.8 Good
2
Gliese 581 e

Gliese 581 e

Gliese 581 e is the least massive planet in the Gliese 581 system at ~1.9 Earth masses, announced in 2009; it orbits ver...

Hot Radial Velocity Super Earth M Dwarf
7.6 Good
3
HD 40307 g

HD 40307 g

HD 40307 g was reported in 2012 as a super-Earth candidate detected through radial-velocity measurements of the nearby K...

Radial Velocity Super Earth Habitable Zone Potentially Habitable
7.4 Good
4
Gliese 581 b

Gliese 581 b

Gliese 581 b is a Neptune-class exoplanet orbiting the nearby M-dwarf Gliese 581, about 20 light-years from Earth. It ha...

Hot Radial Velocity Neptune Class Multi Planet
7.2 Good
5
61 Virginis b

61 Virginis b

61 Virginis b is the innermost known planet in the 61 Virginis system, orbiting a nearby Sun-like star about 28 light-ye...

Hot Radial Velocity Super Earth Multi Planet
7.2 Good
6
HD 10180 c

HD 10180 c

HD 10180 c is a confirmed planet detected through the radial-velocity motion of the Sun-like star HD 10180, located abou...

Hot Radial Velocity Super Earth Multi Planet
7.0 Good
7
61 Virginis c

61 Virginis c

61 Virginis c is a radial-velocity planet orbiting the nearby Sun-like star 61 Virginis, about 28 light-years from Earth...

Warm Radial Velocity Super Earth Multi Planet
6.8 Fair
8
Mu Arae c

Mu Arae c

Mu Arae c is a close-orbiting exoplanet detected by radial-velocity measurements around Mu Arae, a G-type star about 50...

Hot Radial Velocity Neptune Class Multi Planet
6.8 Fair
9
YZ Ceti b

YZ Ceti b

YZ Ceti b is a small exoplanet detected by radial-velocity measurements around YZ Ceti, a nearby M dwarf about 12 light-...

Hot Radial Velocity Multi Planet M Dwarf
6.8 Fair
10
HD 219134 d

HD 219134 d

HD 219134 d is an extrasolar planet orbiting the nearby K-type star HD 219134 in the constellation Cassiopeia, about 21...

Warm Radial Velocity Nearby Super Earth
6.8 Fair
11
Wolf 1061 b

Wolf 1061 b

Wolf 1061 b is the innermost reported planet in the multi-planet system around Wolf 1061, a nearby red dwarf about 14 li...

Hot Radial Velocity Super Earth Multi Planet
6.6 Fair
12
HD 40307 c

HD 40307 c

HD 40307 c is a super-Earth-mass exoplanet orbiting the K-type star HD 40307. It was announced in 2008 from radial-veloc...

Warm Radial Velocity Super Earth Multi Planet
6.5 Fair
13
HD 40307 d

HD 40307 d

HD 40307 d is one of the planets first identified around the nearby K-type star HD 40307. It was reported in 2008 from r...

Warm Radial Velocity Super Earth Multi Planet
6.5 Fair
14
HD 128311 b

HD 128311 b

HD 128311 b is a gas-giant exoplanet orbiting the K-type star HD 128311, about 53 light-years from Earth. It was detecte...

Warm Giant Radial Velocity Multi Planet
6.5 Fair
15
HD 128311 c

HD 128311 c

HD 128311 c is a gas-giant exoplanet orbiting the K-type star HD 128311, located roughly 53 light-years from Earth. The...

Giant Cold Radial Velocity Multi Planet
6.5 Fair
16
HD 192310 b

HD 192310 b

HD 192310 b is a planet with a minimum mass in the Neptune range orbiting the nearby K-type star HD 192310. Its existenc...

Warm Radial Velocity Super Earth Multi Planet
6.5 Fair
17
HIP 14810 b

HIP 14810 b

HIP 14810 b is a gas-giant exoplanet orbiting the star HIP 14810, a Sun-like star in the constellation Pisces. It was id...

Hot Giant Radial Velocity Multi Planet
6.5 Fair
18
HD 190360 c

HD 190360 c

HD 190360 c is the inner, low-mass planet in the HD 190360 planetary system, which surrounds a G-type star. It was ident...

Hot Radial Velocity Super Earth G Star
6.4 Fair
19
HD 219134 f

HD 219134 f

HD 219134 f is a confirmed exoplanet orbiting the nearby K-type star HD 219134. It belongs to a compact planetary system...

Cold Radial Velocity Nearby Super Earth
6.4 Fair
20
HD 192310 c

HD 192310 c

HD 192310 c is an exoplanet orbiting HD 192310, a nearby K-type star about 29 light-years from Earth. It was announced i...

Cold Radial Velocity Super Earth Multi Planet
6.2 Fair

summarize Quick Comparison Summary

Alternative Score vs HD 40307 b Action
Gliese 876 d
Gliese 876 d
Exoplanet Hot Rocky Radial Velocity
7.8 Good +1.0 Compare
Gliese 581 e
Gliese 581 e
Exoplanet Hot Radial Velocity Super Earth
7.6 Good +0.8 Compare
HD 40307 g
HD 40307 g
Exoplanet Radial Velocity Super Earth Habitable Zone
7.4 Good +0.6 Compare
Gliese 581 b
Gliese 581 b
Exoplanet Hot Radial Velocity Neptune Class
7.2 Good +0.4 Compare
61 Virginis b
61 Virginis b
Exoplanet Hot Radial Velocity Super Earth
7.2 Good +0.4 Compare
HD 10180 c
HD 10180 c
Exoplanet Hot Radial Velocity Super Earth
7.0 Good +0.2 Compare
61 Virginis c
61 Virginis c
Exoplanet Warm Radial Velocity Super Earth
6.8 Fair Same Compare
Mu Arae c
Mu Arae c
Exoplanet Hot Radial Velocity Neptune Class
6.8 Fair Same Compare
YZ Ceti b
YZ Ceti b
Exoplanet Hot Radial Velocity Multi Planet
6.8 Fair Same Compare
HD 219134 d
HD 219134 d
Exoplanet Warm Radial Velocity Nearby
6.8 Fair Same Compare

See all Exoplanet ranked by score

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help Frequently Asked Questions

What are the best alternatives to HD 40307 b?
The top alternatives to HD 40307 b in 2026 include Gliese 876 d, Gliese 581 e, HD 40307 g, Gliese 581 b, 61 Virginis b. Each offers unique features and is objectively scored on Lunoo to help you compare.
How does HD 40307 b compare to its competitors?
Our AI-powered comparison system analyzes features, pricing, user reviews, and expert opinions to provide objective scores. HD 40307 b scores 6.8/10. Click any alternative above to see a detailed side-by-side comparison.
Is HD 40307 b worth it in 2026?
HD 40307 b scores 6.8/10 in the Exoplanet category. We recommend comparing it with the 20 alternatives listed above to find the best fit for your needs.
What is the best free alternative to HD 40307 b?
Several alternatives to HD 40307 b offer free plans or free tiers. Check the alternatives listed above and visit their websites to compare pricing and free options.
Why should I switch from HD 40307 b?
Common reasons users look for HD 40307 b alternatives include pricing, specific feature gaps, better integration needs, or simply exploring newer options. Our objective scoring helps you compare without bias.
How many alternatives to HD 40307 b are there?
Lunoo currently lists 20 scored alternatives to HD 40307 b in the Exoplanet category, ranked by our AI-powered evaluation system.
Which HD 40307 b alternative has the highest rating?
Gliese 876 d currently holds the highest rating among HD 40307 b alternatives with a score of 7.8/10.
Can I use Gliese 876 d instead of HD 40307 b?
Gliese 876 d is one of the top-rated alternatives to HD 40307 b. While they serve similar purposes in the Exoplanet space, each has distinct strengths. Use our comparison tool above for a detailed side-by-side analysis.
What is the cheapest alternative to HD 40307 b?
Pricing varies among HD 40307 b alternatives. We recommend checking each alternative's website for current pricing. Many options in the Exoplanet category offer free tiers or competitive pricing.
How are HD 40307 b alternatives ranked on Lunoo?
Lunoo uses an AI-powered scoring system that analyzes category fit, feature coverage, pricing signals, public reception, recency, and value to provide 0 to 10 scores. Rankings are updated continuously.
HD 40307 b vs Gliese 876 d: which is better?
HD 40307 b scores 6.8/10 while Gliese 876 d scores 7.8/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
HD 40307 b vs Gliese 581 e: which is better?
HD 40307 b scores 6.8/10 while Gliese 581 e scores 7.6/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
HD 40307 b vs HD 40307 g: which is better?
HD 40307 b scores 6.8/10 while HD 40307 g scores 7.4/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.

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Hot Radial Velocity Exoplanet Super Earth Multi Planet K Star

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