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swap_horiz HD 21749 c Alternatives

Looking for alternatives to HD 21749 c? Compare the top Exoplanet options ranked by our AI scoring system.

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HD 21749 c

HD 21749 c

Exoplanet Hot Transiting Earth Sized Tess K Star

Announced in 2019, HD 21749 c is an Earth-sized exoplanet discovered by NASA's TESS satellite, notable for being the first roughly Earth-sized planet found by the TESS mission.

6.8 Fair

apps Top HD 21749 c Alternatives

The top alternative to HD 21749 c in 2026 is TRAPPIST-1e with a score of 9.8/10, followed by TRAPPIST-1f (9.5) and TRAPPIST-1g (9.4).

1
TRAPPIST-1e

TRAPPIST-1e

TRAPPIST-1e is an Earth-sized exoplanet orbiting the ultra-cool dwarf star TRAPPIST-1. Its location within the habitable...

Transiting Earth Sized Habitable Zone Potentially Habitable
9.8 Brilliant
2
TRAPPIST-1f

TRAPPIST-1f

TRAPPIST-1f is an Earth-sized exoplanet orbiting the TRAPPIST-1 star. It resides within the habitable zone where liquid...

Transiting Earth Sized Habitable Zone Potentially Habitable
9.5 Brilliant
3
TRAPPIST-1g

TRAPPIST-1g

TRAPPIST-1g is an Earth-sized exoplanet orbiting the TRAPPIST-1 star. Its notable size, approximately 1.13 times that of...

Rocky Transiting Earth Sized Habitable Zone
9.4 Excellent
4
TRAPPIST-1d

TRAPPIST-1d

TRAPPIST-1d is an Earth-sized exoplanet orbiting the TRAPPIST-1 star. It resides within the system's habitable zone, rai...

Rocky Transiting Earth Sized Habitable Zone
9.2 Excellent
5
TRAPPIST-1c

TRAPPIST-1c

TRAPPIST-1c is an Earth-sized exoplanet orbiting the ultracool dwarf star TRAPPIST-1. Located within the TRAPPIST system...

Rocky Transiting Earth Sized M Dwarf
9.1 Excellent
6
TRAPPIST-1b

TRAPPIST-1b

TRAPPIST-1b is an Earth-sized exoplanet orbiting the ultra compact M-dwarf star TRAPPIST-1. Located 39 light-years from...

Ultra Compact Transiting Earth Sized M Dwarf
8.9 Great
7
TRAPPIST-1h

TRAPPIST-1h

TRAPPIST-1h is the outermost of the seven TRAPPIST-1 planets, announced in 2017; it likely receives insufficient stellar...

Cold Transiting Earth Sized Trappist
8.7 Great
8
WASP-107b

WASP-107b

A highly inflated super-Neptune exoplanet discovered in 2017, notable for having one of the lowest known densities and a...

Atmosphere Transiting Low Density Hot Saturn
8.7 Great
9
TOI-700 d

TOI-700 d

TOI-700 d is an Earth-sized exoplanet discovered by NASA's TESS satellite in 2020, notable for being one of the few pote...

Earth Sized Habitable Zone Potentially Habitable M Dwarf
8.5 Great
10
HD 219134 b

HD 219134 b

A rocky super-Earth exoplanet discovered in 2015, notable for being one of the closest transiting exoplanets to our sola...

Rocky Nearby Transiting Super Earth
8.4 Great
11
L 98-59 b

L 98-59 b

Discovered by NASA's TESS satellite in 2019, L 98-59 b is a rocky, Earth-sized exoplanet notable for being the innermost...

Hot Transiting Sub Earth M Dwarf
7.6 Good
12
HD 21749 b

HD 21749 b

Discovered by NASA's TESS satellite in 2019, HD 21749 b is a sub-Neptune exoplanet notable for having one of the longest...

Temperate Transiting Sub Neptune Tess
7.0 Good
13
GJ 357 b

GJ 357 b

GJ 357 b is a transiting super-Earth orbiting an M-dwarf ~31 light-years away, discovered by TESS in 2019; its equilibri...

Hot Transiting Super Earth M Dwarf
6.8 Fair
14
TOI-700 b

TOI-700 b

TOI-700 b is an Earth-sized exoplanet discovered by NASA's TESS satellite in 2020, notable for being the innermost plane...

Hot Transiting Earth Sized M Dwarf
6.8 Fair
15
TOI-178 b

TOI-178 b

A rocky super-Earth exoplanet confirmed in 2021, notable as the innermost planet in a unique six-planet system that feat...

Transiting Super Earth Tess K Star
6.8 Fair
16
TOI-178 c

TOI-178 c

An exoplanet orbiting the star TOI-178 in a six-planet system confirmed in 2021, notable for participating in a complex...

Transiting Super Earth Tess K Star
6.8 Fair
17
TOI-178 d

TOI-178 d

A volatile-rich mini-Neptune exoplanet confirmed in 2021 as part of the TOI-178 system, notable for its position within...

Transiting Sub Neptune Tess K Star
6.8 Fair
18
TOI-178 e

TOI-178 e

An exoplanet in the TOI-178 system confirmed in 2021, notable for being one of six planets locked in a precise Laplace r...

Transiting Sub Neptune Tess K Star
6.8 Fair
19
TOI-178 f

TOI-178 f

A mini-Neptune exoplanet confirmed in 2021, notable as the second outermost planet in the TOI-178 system, which exhibits...

Transiting Sub Neptune Tess K Star
6.8 Fair
20
TOI-178 g

TOI-178 g

The outermost exoplanet in the TOI-178 system confirmed in 2021, notable for being a mini-Neptune that completes the rar...

Transiting Sub Neptune Tess K Star
6.8 Fair

summarize Quick Comparison Summary

Alternative Score vs HD 21749 c Action
TRAPPIST-1e
TRAPPIST-1e
Exoplanet Transiting Earth Sized Habitable Zone
9.8 Brilliant +3.0 Compare
TRAPPIST-1f
TRAPPIST-1f
Exoplanet Transiting Earth Sized Habitable Zone
9.5 Brilliant +2.7 Compare
TRAPPIST-1g
TRAPPIST-1g
Exoplanet Rocky Transiting Earth Sized
9.4 Excellent +2.6 Compare
TRAPPIST-1d
TRAPPIST-1d
Exoplanet Rocky Transiting Earth Sized
9.2 Excellent +2.4 Compare
TRAPPIST-1c
TRAPPIST-1c
Exoplanet Rocky Transiting Earth Sized
9.1 Excellent +2.3 Compare
TRAPPIST-1b
TRAPPIST-1b
Exoplanet Ultra Compact Transiting Earth Sized
8.9 Great +2.1 Compare
TRAPPIST-1h
TRAPPIST-1h
Exoplanet Cold Transiting Earth Sized
8.7 Great +1.9 Compare
WASP-107b
WASP-107b
Exoplanet Atmosphere Transiting Low Density
8.7 Great +1.9 Compare
TOI-700 d
TOI-700 d
Exoplanet Earth Sized Habitable Zone Potentially Habitable
8.5 Great +1.7 Compare
HD 219134 b
HD 219134 b
Exoplanet Rocky Nearby Transiting
8.4 Great +1.6 Compare

See all Exoplanet ranked by score

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help Frequently Asked Questions

What are the best alternatives to HD 21749 c?
The top alternatives to HD 21749 c in 2026 include TRAPPIST-1e, TRAPPIST-1f, TRAPPIST-1g, TRAPPIST-1d, TRAPPIST-1c. Each offers unique features and is objectively scored on Lunoo to help you compare.
How does HD 21749 c compare to its competitors?
Our AI-powered comparison system analyzes features, pricing, user reviews, and expert opinions to provide objective scores. HD 21749 c scores 6.8/10. Click any alternative above to see a detailed side-by-side comparison.
Is HD 21749 c worth it in 2026?
HD 21749 c 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 21749 c?
Several alternatives to HD 21749 c 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 21749 c?
Common reasons users look for HD 21749 c 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 21749 c are there?
Lunoo currently lists 20 scored alternatives to HD 21749 c in the Exoplanet category, ranked by our AI-powered evaluation system.
Which HD 21749 c alternative has the highest rating?
TRAPPIST-1e currently holds the highest rating among HD 21749 c alternatives with a score of 9.8/10.
Can I use TRAPPIST-1e instead of HD 21749 c?
TRAPPIST-1e is one of the top-rated alternatives to HD 21749 c. 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 21749 c?
Pricing varies among HD 21749 c 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 21749 c 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 21749 c vs TRAPPIST-1e: which is better?
HD 21749 c scores 6.8/10 while TRAPPIST-1e scores 9.8/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
HD 21749 c vs TRAPPIST-1f: which is better?
HD 21749 c scores 6.8/10 while TRAPPIST-1f scores 9.5/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
HD 21749 c vs TRAPPIST-1g: which is better?
HD 21749 c scores 6.8/10 while TRAPPIST-1g scores 9.4/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.

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Hot Exoplanet Transiting Earth Sized Tess K Star

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