search
Get Started
search

swap_horiz HD 99109 b Alternatives

Looking for alternatives to HD 99109 b? Compare the top Exoplanet options ranked by our AI scoring system.

You're looking at alternatives to:
HD 99109 b

HD 99109 b

Saturn-mass gas giant orbiting the K-type star HD 99109 with a roughly 440-day period, discovered via radial velocity and notable for its low host-star metallicity.

5.6 Mediocre

apps Top HD 99109 b Alternatives

The top alternative to HD 99109 b in 2026 is 55 Cancri b with a score of 7.8/10, followed by Epsilon Eridani b (7.8) and Gliese 876 c (7.5).

1
55 Cancri b

55 Cancri b

A Jupiter-mass hot Jupiter discovered in 1996 around the nearby star 55 Cancri, orbiting at just 0.11 AU with a period o...

Warm Giant Radial Velocity Multi Planet
7.8 Good
2
Epsilon Eridani b

Epsilon Eridani b

Epsilon Eridani b is a Jupiter-like exoplanet orbiting one of the Sun's nearest stellar neighbors (~10.5 ly), confirmed...

Giant Cold Radial Velocity K Star
7.8 Good
3
Gliese 876 c

Gliese 876 c

A Jupiter-mass planet discovered in 2001 orbiting red dwarf Gliese 876, locked in a 2:1 orbital resonance with the outer...

Warm Resonance Giant Radial Velocity
7.5 Good
4
55 Cancri f

55 Cancri f

Discovered in 2007, this Saturn-mass planet orbits 55 Cancri near the inner edge of its habitable zone, completing one o...

Warm Giant Radial Velocity Habitable Zone
7.4 Good
5
Upsilon Andromedae c

Upsilon Andromedae c

Announced in 1999 as part of the first confirmed multi-planet system around a main-sequence star, a giant planet orbitin...

Warm Giant Radial Velocity Multi Planet
7.4 Good
6
Pi Mensae b

Pi Mensae b

Pi Mensae b is a highly eccentric gas giant exoplanet discovered in 2001, notable for its massive size and for paving th...

Giant Cold Eccentric Radial Velocity
7.4 Good
7
HD 114762 b

HD 114762 b

HD 114762 b is one of the earliest exoplanet candidates, reported by Latham et al. in 1989; its minimum mass of ~11 Jupi...

Warm Giant Radial Velocity F Star
6.8 Fair
8
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
9
HD 28185 b

HD 28185 b

HD 28185 b is a Jupiter-mass planet whose ~383-day orbit places it within the host star's habitable zone, making it nota...

Warm Giant Radial Velocity Habitable Zone
6.6 Fair
10
HD 160691 b

HD 160691 b

Jupiter-mass planet orbiting the nearby G-type star mu Arae (HD 160691, ~15 pc), the first confirmed planet in this well...

Warm Giant Radial Velocity Multi Planet
6.6 Fair
11
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
12
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
13
HD 168443 b

HD 168443 b

HD 168443 b is a massive giant planet (~8 Jupiter masses) with a ~58-day orbit around HD 168443, discovered in 1999 as p...

Warm Giant Eccentric Radial Velocity
6.4 Fair
14
HD 3651 b

HD 3651 b

HD 3651 b is a Saturn-mass planet discovered in 2003 by Fischer et al.; its host star HD 3651 is also accompanied by a d...

Warm Giant Eccentric Radial Velocity
6.4 Fair
15
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
16
HD 130322 b

HD 130322 b

HD 130322 b is a hot Jupiter with an orbital period of ~10.7 days around HD 130322, discovered in 1999 by Udry et al. us...

Giant Eccentric Radial Velocity Hot Jupiter
6.2 Fair
17
HD 177830 b

HD 177830 b

HD 177830 b is a giant planet orbiting HD 177830 with a period of ~391 days in a nearly circular orbit, discovered in 19...

Warm Giant Radial Velocity Habitable Zone
6.2 Fair
18
HD 192263 b

HD 192263 b

HD 192263 b is a Saturn-mass planet with a ~24-day orbit discovered in 2000; its detection was complicated by stellar ac...

Warm Giant Radial Velocity K Star
6.2 Fair
19
HD 74156 b

HD 74156 b

Massive, highly eccentric gas giant forming the inner orbit of the HD 74156 two-planet system, discovered via radial vel...

Warm Giant Eccentric Radial Velocity
6.2 Fair
20
HD 86264 b

HD 86264 b

Massive gas giant of approximately 7 Jupiter masses orbiting the F-type subgiant HD 86264 in a moderately eccentric orbi...

Warm Giant Eccentric Radial Velocity
5.6 Mediocre

summarize Quick Comparison Summary

Alternative Score vs HD 99109 b Action
55 Cancri b
55 Cancri b
Exoplanet Warm Giant Radial Velocity
7.8 Good +2.2 Compare
Epsilon Eridani b
Epsilon Eridani b
Exoplanet Giant Cold Radial Velocity
7.8 Good +2.2 Compare
Gliese 876 c
Gliese 876 c
Exoplanet Warm Resonance Giant
7.5 Good +1.9 Compare
55 Cancri f
55 Cancri f
Exoplanet Warm Giant Radial Velocity
7.4 Good +1.8 Compare
Upsilon Andromedae c
Upsilon Andromedae c
Exoplanet Warm Giant Radial Velocity
7.4 Good +1.8 Compare
Pi Mensae b
Pi Mensae b
Exoplanet Giant Cold Eccentric
7.4 Good +1.8 Compare
HD 114762 b
HD 114762 b
Exoplanet Warm Giant Radial Velocity
6.8 Fair +1.2 Compare
HD 219134 d
HD 219134 d
Exoplanet Warm Radial Velocity Nearby
6.8 Fair +1.2 Compare
HD 28185 b
HD 28185 b
Exoplanet Warm Giant Radial Velocity
6.6 Fair +1.0 Compare
HD 160691 b
HD 160691 b
Exoplanet Warm Giant Radial Velocity
6.6 Fair +1.0 Compare

See all Exoplanet ranked by score

emoji_events View Full Exoplanet Rankings

help Frequently Asked Questions

What are the best alternatives to HD 99109 b?
The top alternatives to HD 99109 b in 2026 include 55 Cancri b, Epsilon Eridani b, Gliese 876 c, 55 Cancri f, Upsilon Andromedae c. Each offers unique features and is objectively scored on Lunoo to help you compare.
How does HD 99109 b compare to its competitors?
Our AI-powered comparison system analyzes features, pricing, user reviews, and expert opinions to provide objective scores. HD 99109 b scores 5.6/10. Click any alternative above to see a detailed side-by-side comparison.
Is HD 99109 b worth it in 2026?
HD 99109 b scores 5.6/10 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 99109 b?
Several alternatives to HD 99109 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 99109 b?
Common reasons users look for HD 99109 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 99109 b are there?
Lunoo currently lists 20 scored alternatives to HD 99109 b in the Exoplanet category, ranked by our AI-powered evaluation system.
Which HD 99109 b alternative has the highest rating?
55 Cancri b currently holds the highest rating among HD 99109 b alternatives with a score of 7.8/10.
Can I use 55 Cancri b instead of HD 99109 b?
55 Cancri b is one of the top-rated alternatives to HD 99109 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 99109 b?
Pricing varies among HD 99109 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 99109 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 99109 b vs 55 Cancri b: which is better?
HD 99109 b scores 5.6/10 while 55 Cancri b scores 7.8/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
HD 99109 b vs Epsilon Eridani b: which is better?
HD 99109 b scores 5.6/10 while Epsilon Eridani b scores 7.8/10 on Lunoo. The best choice depends on your specific needs. Use our detailed comparison tool for a full breakdown.
HD 99109 b vs Gliese 876 c: which is better?
HD 99109 b scores 5.6/10 while Gliese 876 c scores 7.5/10 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