What are the key differences between WASP-17b and KELT-9b?

Compare WASP-17b and KELT-9b side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are WASP-17b and KELT-9b scored?

WASP-17b has an AI score of 8.6/10 and KELT-9b has an AI score of 9.5/10. Scores are based on category fit, feature coverage, pricing signals, public reception, and recency.

WASP-17b vs KELT-9b 2026 - Compared

WASP-17b

KELT-9b

WINNER KELT-9b

KELT-9b edges ahead with a score of 9.5/10 compared to 8.6/10 for WASP-17b. While both are highly rated in their respect...

KELT-9b edges ahead with a score of 9.5/10 compared to 8.6/10 for WASP-17b. While both are highly rated in their respective fields, KELT-9b demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: KELT-9b

verified Confidence: Low

description Overview

WASP-17b

WASP-17b is a giant exoplanet announced in 2009 by the Wide Angle Search for Planets consortium. It holds the distinction of being the first exoplanet confirmed to orbit in a retrograde direction, moving in the opposite direction of its host star's rotation. Classified as a hot Jupiter, it is also notable for its extremely low density and heavily inflated radius, making it one of the largest plane...

KELT-9b

KELT-9b is a giant exoplanet orbiting the star HD 189733A. It’s notable as the hottest known planet, boasting a dayside temperature exceeding 4,000 Kelvin – hotter than many stars. This ultrahot Jupiter was discovered by the Kentucky Extrasolar Traniting Survey (KELT) in 2017 and is of interest to astronomers studying extreme planetary atmospheres and transiting exoplanets.