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swap_horiz Gliese 581 b Alternatives

Looking for alternatives to Gliese 581 b? Compare the top Exoplanet options ranked by our AI scoring system.

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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 spectrograph in 2005 around an M-dwarf ~20 light-years away.

7.2 Good

apps Top Gliese 581 b Alternatives

The top alternative to Gliese 581 b in 2026 is Gliese 876 d with a score of 7.8/10, followed by Gliese 581 e (7.6) and HD 69830 b (7.2).

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 69830 b

HD 69830 b

The innermost of three Neptune-mass planets discovered in 2006 around HD 69830, a system also hosting a prominent warm d...

Warm Radial Velocity Neptune Class Multi Planet
7.2 Good
4
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
5
55 Cancri c

55 Cancri c

A Saturn-mass planet in the 55 Cancri system discovered in 2002, orbiting every 44 days between the innermost and the mo...

Warm Radial Velocity Neptune Class Multi Planet
7.0 Good
6
HD 69830 c

HD 69830 c

The middle planet in the HD 69830 three-Neptune system announced in 2006, orbiting its K-type host star at about 0.19 AU...

Warm Radial Velocity Neptune Class Multi Planet
7.0 Good
7
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
8
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
9
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
10
HD 10180 d

HD 10180 d

HD 10180 d is a Neptune-mass exoplanet orbiting the star HD 10180 about 127 light-years away, part of a system with at l...

Warm Radial Velocity Neptune Class Multi Planet
6.8 Fair
11
HD 10180 e

HD 10180 e

HD 10180 e is a roughly Earth- to Neptune-mass exoplanet orbiting HD 10180 about 127 light-years away, one of multiple p...

Warm Radial Velocity Neptune Class Multi Planet
6.8 Fair
12
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
13
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
14
61 Virginis d

61 Virginis d

The outermost of three super-Earths found in 2009 around 61 Virginis, orbiting every 123 days with a minimum mass of app...

Cold Radial Velocity Neptune Class Multi Planet
6.6 Fair
15
HD 10180 f

HD 10180 f

HD 10180 f is a super-Earth or mini-Neptune exoplanet orbiting HD 10180 about 127 light-years away, part of a multi-plan...

Cool Radial Velocity Neptune Class Multi Planet
6.6 Fair
16
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
17
YZ Ceti c

YZ Ceti c

YZ Ceti c is the second planet in the YZ Ceti system (~12 ly), discovered in 2017 using the HARPS spectrograph as part o...

Warm Radial Velocity Multi Planet M Dwarf
6.6 Fair
18
YZ Ceti d

YZ Ceti d

YZ Ceti d is the outermost known planet of YZ Ceti (~12 ly), discovered in 2017 and later noted for potentially generati...

Warm Radial Velocity Multi Planet M Dwarf
6.6 Fair
19
GJ 3293 b

GJ 3293 b

A Neptune-like exoplanet discovered in 2013, notable for being one of the longest-period planets detected using the radi...

Warm Radial Velocity Neptune Class Multi Planet
6.4 Fair
20
GJ 3293 e

GJ 3293 e

A super-Earth exoplanet confirmed in 2017, notable for being the innermost known planet in the GJ 3293 system, orbiting...

Warm Radial Velocity Neptune Class Multi Planet
5.8 Mediocre

summarize Quick Comparison Summary

Alternative Score vs Gliese 581 b Action
Gliese 876 d
Gliese 876 d
Exoplanet Hot Rocky Radial Velocity
7.8 Good +0.6 Compare
Gliese 581 e
Gliese 581 e
Exoplanet Hot Radial Velocity Super Earth
7.6 Good +0.4 Compare
HD 69830 b
HD 69830 b
Exoplanet Warm Radial Velocity Neptune Class
7.2 Good Same Compare
61 Virginis b
61 Virginis b
Exoplanet Hot Radial Velocity Super Earth
7.2 Good Same Compare
55 Cancri c
55 Cancri c
Exoplanet Warm Radial Velocity Neptune Class
7.0 Good -0.2 Compare
HD 69830 c
HD 69830 c
Exoplanet Warm Radial Velocity Neptune Class
7.0 Good -0.2 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
HD 40307 b
HD 40307 b
Exoplanet Hot Radial Velocity Super Earth
6.8 Fair -0.4 Compare
HD 10180 d
HD 10180 d
Exoplanet Warm Radial Velocity Neptune Class
6.8 Fair -0.4 Compare

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help Frequently Asked Questions

What are the best alternatives to Gliese 581 b?
The top alternatives to Gliese 581 b in 2026 include Gliese 876 d, Gliese 581 e, HD 69830 b, 61 Virginis b, 55 Cancri c. Each offers unique features and is objectively scored on Lunoo to help you compare.
How does Gliese 581 b compare to its competitors?
Our AI-powered comparison system analyzes features, pricing, user reviews, and expert opinions to provide objective scores. Gliese 581 b scores 7.2/10. Click any alternative above to see a detailed side-by-side comparison.
Is Gliese 581 b worth it in 2026?
Gliese 581 b scores 7.2/10 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 Gliese 581 b?
Several alternatives to Gliese 581 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 Gliese 581 b?
Common reasons users look for Gliese 581 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 Gliese 581 b are there?
Lunoo currently lists 20 scored alternatives to Gliese 581 b in the Exoplanet category, ranked by our AI-powered evaluation system.
Which Gliese 581 b alternative has the highest rating?
Gliese 876 d currently holds the highest rating among Gliese 581 b alternatives with a score of 7.8/10.
Can I use Gliese 876 d instead of Gliese 581 b?
Gliese 876 d is one of the top-rated alternatives to Gliese 581 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 Gliese 581 b?
Pricing varies among Gliese 581 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 Gliese 581 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.
Gliese 581 b vs Gliese 876 d: which is better?
Gliese 581 b scores 7.2/10 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.
Gliese 581 b vs Gliese 581 e: which is better?
Gliese 581 b scores 7.2/10 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.
Gliese 581 b vs HD 69830 b: which is better?
Gliese 581 b scores 7.2/10 while HD 69830 b scores 7.2/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.

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