Stellar Culmination: Determining Sidereal Time at the Moment of Arcturus' Peak

  • Thread starter Thread starter mystery_witch
  • Start date Start date
  • Tags Tags
    Star
AI Thread Summary
To determine the sidereal time when Arcturus culminates, one must understand that culmination refers to the star reaching its highest point in the sky. This event occurs when the star is at its meridian, which corresponds to its Right Ascension being equal to the local sidereal time. While the original term "culminate" is correctly translated, it may not be commonly used in astronomy discussions. Knowing the specific time of culmination can simplify solving the problem, but the focus should be on the relationship between Right Ascension and sidereal time rather than providing a numerical answer. Understanding these concepts is essential for accurately addressing the problem.
mystery_witch
Messages
4
Reaction score
0
In my problem, it says only this: "The star Arcturus culminates. What is the sidereal time at this moment?"

Do I need to know when the star culminates to solve the problem, and if I do where would I find this information?
 
Physics news on Phys.org
Culminates means reaches it's highest point (although I've never heard this term used in astronomy - was this a translation?).
I think it wants you describe the relation of Right Ascension to sidereal time rather than give a number
 
This was actually a translation, but it is translated correctly. Culminate is the word used in the original, although it doesn't really sound right in this context.

As for the problem, it does make it a lot easier if I don't have to give a number as the answer.

Thanks.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top