here's the only solution in Illustrator.
There is (almost) always more than one solution.
Another one, or two:
1) Draw the object and place it somewhere appropriate (maybe at a certain distance below the lower left corner of the Artboard X=Y=0);
2) Draw a no fill no stroke circle with a centre appropriately aligned with the object (such as X=Y=0) and a diameter large enough for it to enclose the object, group with 1) or just select both;
3) One of the following performed on 1)+2):
3a) Object>Transform>Rotate inserting 360/N, where N is the number of items round the circle, repeat (Ctrl/Cmd+D) once less (delete the circles if desired);
3b) Effect>Distort & Transform>Transform, rotate similarly with one copy less (this requires grouping); Object>Expand Appearance if desired to have independent separate objects.
Some of the angles in the table are approximations and therefore inaccurate; 360/N is accurate.
A new Circle Thread is born.
Who is next?
...the simplest way...the only solution...
As you can already see, certainly neither the "only" nor the "simplest"; just arguably the most laborious.
This is a very common topic in this fourm, and has been repeatedly explored ad nauseum.
This is the ONE thing that bugs me about illustrator. In Freehand you had the chance to change the number of objects in a blend after creation, then apply that editable blend to any path, closed or not.
If this could make its way into the next illustrator I for one would be VERY happy!!!
Object>Blend>Blend Options will allow the change in a number of objects in an already made blend. Just select the blend and follow the path indicated.
Even though there are many solutions, not just one, I'm wondering why you are complicating yours by drawing/rotating/deleting lines when all you need do is rotate the shape around a pivot point and then repeat Ctrl+D?
Except for "simplest" and "only," GRW is exactly right. On those two words, he was just kidding.
And what about distribute objects evenly around an oval?
There are plugins, scripts or the blend function for the oval thing.
Thank you Monica! I found the way to do it by creating a pattern brush. It worked! It's easy and quick...
I really like the suggestions that are non-destructive and permanent. Keep them coming folks!