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swap_horiz HD 40307 g Alternatives

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

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HD 40307 g

HD 40307 g

Exoplanet Radial Velocity Super Earth Habitable Zone Potentially Habitable K Star

A super-Earth announced in 2012 orbiting HD 40307 within the star's habitable zone, drawing attention as a candidate for liquid water given its orbital distance.

7.4 Good

apps Top HD 40307 g Alternatives

The top alternative to HD 40307 g in 2026 is Proxima Centauri b with a score of 9.9/10, followed by Kepler-186f (9.7) and Kepler-442b (9.1).

1
Proxima Centauri b

Proxima Centauri b

Proxima Centauri b is an exoplanet orbiting Proxima Centauri, the closest star to our Sun. This super-Earth resides with...

Radial Velocity Super Earth Habitable Zone M Dwarf
9.9 Brilliant
2
Kepler-186f

Kepler-186f

Kepler-186f is an exoplanet approximately Earth-sized orbiting the red dwarf star Kepler-186. It resides within its star...

Kepler Super Earth Earth Sized Habitable Zone
9.7 Brilliant
3
Kepler-442b

Kepler-442b

Kepler-442b is an exoplanet orbiting a cooler star approximately 1,200 light-years from Earth. Its size and position wit...

Kepler Transiting Super Earth Habitable Zone
9.1 Excellent
4
Kepler-62f

Kepler-62f

Kepler-62f is an exoplanet located in the Kepler-62 system. It’s notable as a super-Earth orbiting a red dwarf star with...

Kepler Transiting Super Earth Habitable Zone
9.0 Excellent
5
LHS 1140 b

LHS 1140 b

LHS 1140 b is an exoplanet approximately seven times Earth’s mass, orbiting the M-dwarf star LHS 1140. Its location with...

Transiting Super Earth Habitable Zone Potentially Habitable
8.7 Great
6
Kepler-438b

Kepler-438b

A near-Earth-sized exoplanet discovered in 2015, notable for orbiting within the habitable zone of its red dwarf star, t...

Kepler Super Earth Habitable Zone Potentially Habitable
8.5 Great
7
GJ 667Cc

GJ 667Cc

GJ 667Cc is a super-Earth orbiting within the habitable zone of the M-dwarf component of the triple-star system GJ 667,...

Radial Velocity Super Earth Habitable Zone M Dwarf
8.2 Great
8
Ross 128 b

Ross 128 b

Ross 128 b is a temperate, near-Earth-mass planet orbiting red dwarf Ross 128 (~11 ly), discovered in 2017 by Xavier Bon...

Radial Velocity Nearby Super Earth Habitable Zone
8.2 Great
9
Tau Ceti e

Tau Ceti e

Tau Ceti e is a super-Earth candidate orbiting Tau Ceti (~12 ly) near the inner habitable zone edge, announced in 2012 b...

Radial Velocity Nearby Super Earth Habitable Zone
7.8 Good
10
Wolf 1061 c

Wolf 1061 c

Wolf 1061 c is a super-Earth orbiting Wolf 1061 within its habitable zone, discovered in 2015 as one of the nearest pote...

Radial Velocity Super Earth Habitable Zone Potentially Habitable
7.5 Good
11
GJ 273 b

GJ 273 b

GJ 273 b is a super-Earth orbiting within the habitable zone of Luyten's Star (~12.4 ly), discovered in 2017 via HARPS r...

Radial Velocity Nearby Super Earth Habitable Zone
7.4 Good
12
GJ 357 d

GJ 357 d

GJ 357 d is a potentially habitable super-Earth of ~6.1 Earth masses in the GJ 357 system, announced in 2019, orbiting w...

Radial Velocity Super Earth Habitable Zone Potentially Habitable
7.2 Good
13
HD 40307 b

HD 40307 b

The innermost of three super-Earths discovered in 2008 around K-type star HD 40307, approximately 42 light-years away, w...

Hot Radial Velocity Super Earth Multi Planet
6.8 Fair
14
HD 219134 d

HD 219134 d

A mini-Neptune exoplanet discovered in 2015, notable for having a mass similar to Uranus and orbiting the nearby star HD...

Warm Radial Velocity Nearby Super Earth
6.8 Fair
15
HD 219134 e

HD 219134 e

A massive exoplanet discovered in 2015, notable for being a long-period gas giant in the HD 219134 system, orbiting its...

Warm Radial Velocity Nearby Super Earth
6.6 Fair
16
HD 40307 c

HD 40307 c

A super-Earth in the HD 40307 system discovered in 2008, orbiting every 9.6 days, and part of one of the first confirmed...

Warm Radial Velocity Super Earth Multi Planet
6.5 Fair
17
HD 40307 d

HD 40307 d

The outermost of the three originally detected super-Earths around HD 40307, announced in 2008, completing its orbit eve...

Warm Radial Velocity Super Earth Multi Planet
6.5 Fair
18
HD 192310 b

HD 192310 b

HD 192310 b is a Neptune-mass exoplanet orbiting the nearby K-type star HD 192310 about 29 light-years away, discovered...

Warm Radial Velocity Super Earth Multi Planet
6.5 Fair
19
HD 27442 b

HD 27442 b

HD 27442 b is a Jupiter-mass planet orbiting the subgiant Epsilon Reticuli (HD 27442) with a ~428-day period, discovered...

Warm Giant Radial Velocity Habitable Zone
6.4 Fair
20
HD 219134 f

HD 219134 f

HD 219134 f is an exoplanet orbiting the nearby K-dwarf star HD 219134, notable for being part of one of the closest mul...

Cold Radial Velocity Nearby Super Earth
6.4 Fair

summarize Quick Comparison Summary

Alternative Score vs HD 40307 g Action
Proxima Centauri b
Proxima Centauri b
Exoplanet Radial Velocity Super Earth Habitable Zone
9.9 Brilliant +2.5 Compare
Kepler-186f
Kepler-186f
Exoplanet Kepler Super Earth Earth Sized
9.7 Brilliant +2.3 Compare
Kepler-442b
Kepler-442b
Exoplanet Kepler Transiting Super Earth
9.1 Excellent +1.7 Compare
Kepler-62f
Kepler-62f
Exoplanet Kepler Transiting Super Earth
9.0 Excellent +1.6 Compare
LHS 1140 b
LHS 1140 b
Exoplanet Transiting Super Earth Habitable Zone
8.7 Great +1.3 Compare
Kepler-438b
Kepler-438b
Exoplanet Kepler Super Earth Habitable Zone
8.5 Great +1.1 Compare
GJ 667Cc
GJ 667Cc
Exoplanet Radial Velocity Super Earth Habitable Zone
8.2 Great +0.8 Compare
Ross 128 b
Ross 128 b
Exoplanet Radial Velocity Nearby Super Earth
8.2 Great +0.8 Compare
Tau Ceti e
Tau Ceti e
Exoplanet Radial Velocity Nearby Super Earth
7.8 Good +0.4 Compare
Wolf 1061 c
Wolf 1061 c
Exoplanet Radial Velocity Super Earth Habitable Zone
7.5 Good +0.1 Compare

See all Exoplanet ranked by score

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help Frequently Asked Questions

What are the best alternatives to HD 40307 g?
The top alternatives to HD 40307 g in 2026 include Proxima Centauri b, Kepler-186f, Kepler-442b, Kepler-62f, LHS 1140 b. Each offers unique features and is objectively scored on Lunoo to help you compare.
How does HD 40307 g compare to its competitors?
Our AI-powered comparison system analyzes features, pricing, user reviews, and expert opinions to provide objective scores. HD 40307 g scores 7.4/10. Click any alternative above to see a detailed side-by-side comparison.
Is HD 40307 g worth it in 2026?
HD 40307 g scores 7.4/10 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 g?
Several alternatives to HD 40307 g 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 g?
Common reasons users look for HD 40307 g 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 g are there?
Lunoo currently lists 20 scored alternatives to HD 40307 g in the Exoplanet category, ranked by our AI-powered evaluation system.
Which HD 40307 g alternative has the highest rating?
Proxima Centauri b currently holds the highest rating among HD 40307 g alternatives with a score of 9.9/10.
Can I use Proxima Centauri b instead of HD 40307 g?
Proxima Centauri b is one of the top-rated alternatives to HD 40307 g. 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 g?
Pricing varies among HD 40307 g 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 g 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 g vs Proxima Centauri b: which is better?
HD 40307 g scores 7.4/10 while Proxima Centauri b scores 9.9/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
HD 40307 g vs Kepler-186f: which is better?
HD 40307 g scores 7.4/10 while Kepler-186f scores 9.7/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
HD 40307 g vs Kepler-442b: which is better?
HD 40307 g scores 7.4/10 while Kepler-442b scores 9.1/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.

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Radial Velocity Exoplanet Super Earth Habitable Zone Potentially Habitable K Star

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