search
Get Started
search

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

The innermost of three super-Earths discovered in 2008 around K-type star HD 40307, approximately 42 light-years away, with an orbital period of just 4.3 days.

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

Discovered in 2005, this ~5.9 Earth-mass super-Earth around red dwarf Gliese 876 was among the first super-Earths confir...

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

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

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

Gliese 581 b

Gliese 581 b is a hot Neptune-mass planet and the first discovered in the Gliese 581 system, detected by the HARPS spect...

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

61 Virginis b

The innermost of three planets discovered in 2009 around the sun-like star 61 Virginis, 28 light-years away, with a mini...

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

HD 10180 b

The innermost candidate in the HD 10180 system, announced in 2010, which contained up to seven confirmed planets around...

Hot Radial Velocity Super Earth Multi Planet
7.0 Good
7
HD 10180 c

HD 10180 c

HD 10180 c is a Neptune-mass exoplanet orbiting HD 10180 about 127 light-years away, announced in 2010 as one of at leas...

Hot Radial Velocity Super Earth Multi Planet
7.0 Good
8
61 Virginis c

61 Virginis c

A super-Earth discovered in 2009 orbiting the solar analog 61 Virginis every 38 days, detected through high-precision ra...

Warm Radial Velocity Super Earth Multi Planet
6.8 Fair
9
Mu Arae c

Mu Arae c

Mu Arae c is a hot Neptune exoplanet orbiting the star Mu Arae about 50 light-years away, discovered in 2004 and among t...

Hot Radial Velocity Neptune Class Multi Planet
6.8 Fair
10
YZ Ceti b

YZ Ceti b

YZ Ceti b is the innermost of three rocky planets orbiting nearby red dwarf YZ Ceti (~12 ly), discovered in 2017 via HAR...

Hot Radial Velocity Multi Planet M Dwarf
6.8 Fair
11
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
12
Wolf 1061 b

Wolf 1061 b

Wolf 1061 b is the innermost of three super-Earths orbiting Wolf 1061 (~14 ly), discovered in 2015 by Robert Wittenmyer'...

Hot Radial Velocity Super Earth Multi Planet
6.6 Fair
13
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
14
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
15
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
16
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 away, discovered in 2002 vi...

Warm Giant Radial Velocity Multi Planet
6.5 Fair
17
HD 128311 c

HD 128311 c

HD 128311 c is a gas giant exoplanet orbiting the K-type star HD 128311 about 53 light-years away, announced in 2005 and...

Giant Cold Radial Velocity 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 40307 e

HD 40307 e

One of three additional planets announced in 2012 expanding the HD 40307 system to at least six worlds, all with minimum...

Warm Radial Velocity Super Earth Multi Planet
6.2 Fair
20
HD 192310 c

HD 192310 c

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

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 b
HD 10180 b
Exoplanet Hot Radial Velocity Super Earth
7.0 Good +0.2 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

See all Exoplanet ranked by score

emoji_events View Full Exoplanet Rankings

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.

Compare Items

See how they stack up against each other

Comparing
VS
Select 1 more item to compare