A legitimate Meteor Client .jar file for 1.8.9 usually has a specific file size (typically between 3MB to 10MB depending on libraries, though this changes with updates).
If you want the Meteor experience while playing on 1.8.9 servers (like Hypixel), the official developers recommend using . meteor client 189 download verified
There is no "official" Meteor 1.8.9. If you find a download under that name, it is a third-party project and should be handled with extreme caution. The Safe Alternatives A legitimate Meteor Client