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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

Exoplanet Hot Radial Velocity Neptune Class Multi Planet M Dwarf

Gliese 581 b is a Neptune-class exoplanet orbiting the nearby M-dwarf Gliese 581, about 20 light-years from Earth. It has a minimum mass of roughly 16 Earth masses and completes an orbit in about 5.4 days at a distance of only a few hundredths of an astronomical unit. The planet was detected through...

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

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 69830 b

HD 69830 b

HD 69830 b is the innermost known planet around HD 69830, a nearby K-type star. It has a minimum mass of about 10 Earth...

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

55 Cancri c

55 Cancri c is a confirmed Neptune-class exoplanet orbiting the G-type star 55 Cancri, also known as Copernicus. Radial-...

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

HD 69830 c

HD 69830 c is a confirmed Neptune-class planet detected by measuring the radial-velocity motion of the K-type star HD 69...

Warm Radial Velocity Neptune Class Multi Planet
7.0 Good
7
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
8
HD 40307 b

HD 40307 b

HD 40307 b is a radial-velocity exoplanet orbiting the K-type star HD 40307, about 42 light-years away. With a minimum m...

Hot Radial Velocity Super Earth Multi Planet
6.8 Fair
9
HD 10180 d

HD 10180 d

HD 10180 d is a radial-velocity exoplanet orbiting the Sun-like star HD 10180 at a distance of about 127 light-years. It...

Warm Radial Velocity Neptune Class Multi Planet
6.8 Fair
10
HD 10180 e

HD 10180 e

HD 10180 e is a radial-velocity exoplanet in the multi-planet system around HD 10180, a Sun-like star about 127 light-ye...

Warm Radial Velocity Neptune Class Multi Planet
6.8 Fair
11
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
12
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
13
61 Virginis d

61 Virginis d

61 Virginis d is the outermost member of the three-planet system reported around the nearby Sun-like star 61 Virginis. I...

Cold Radial Velocity Neptune Class Multi Planet
6.6 Fair
14
HD 10180 f

HD 10180 f

HD 10180 f is a super-Earth or mini-Neptune candidate orbiting the Sun-like star HD 10180, approximately 127 light-years...

Cool Radial Velocity Neptune Class Multi Planet
6.6 Fair
15
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
16
YZ Ceti c

YZ Ceti c

YZ Ceti c is a small exoplanet reported to orbit the nearby red dwarf YZ Ceti. It was detected through radial-velocity m...

Warm Radial Velocity Multi Planet M Dwarf
6.6 Fair
17
YZ Ceti d

YZ Ceti d

YZ Ceti d is a reported outer planet in the compact planetary system around the nearby red dwarf YZ Ceti. It was identif...

Warm Radial Velocity Multi Planet M Dwarf
6.6 Fair
18
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
19
GJ 3293 b

GJ 3293 b

GJ 3293 b is a giant exoplanet orbiting the nearby M-dwarf star GJ 3293. It was identified through measurements of the h...

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

GJ 3293 e

GJ 3293 e is an exoplanet orbiting the red dwarf star GJ 3293, which lies roughly 65 light-years from the Sun. It was id...

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 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
HD 10180 e
HD 10180 e
Exoplanet Warm Radial Velocity Neptune Class
6.8 Fair -0.4 Compare

See all Exoplanet ranked by score

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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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Hot Radial Velocity Exoplanet Neptune Class Multi Planet M Dwarf

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