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Astronomy
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terry-s
  • Member for 7 years, 1 month
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28 Answers

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8 votes
Accepted

How does a Solar Transit give more accurate determination of Earth-to-Sun distance?

7 votes
Accepted

Does Universal Time really track mean solar time?

7 votes

How time-symmetric is orbital mechanics?

6 votes

How does the Sun orbit the Sun-Jupiter Barycenter?

6 votes

Why is the Earth-Moon distance not the same at each perigee/apogee?

5 votes

Explanation of Longitude of Periapsis

5 votes

Measurement of Planetary Aberration (similar to stellar aberration)

5 votes

How exactly is UT1 measured/calculated?

4 votes
Accepted

Calculation of Julian day is off for negative dates

4 votes

What causes the variation in the length of the synodic month, BESIDES the eccentricity of the Moon's orbit? And how much do they contribute?

4 votes

Direction of major axis of moon's orbit

4 votes

Is the moon's revolution speed increasing or decreasing

4 votes

Why is Uranus able to support a regular satellite system?

4 votes

Explanation of an imaginary transformation occurring in the determination of trigonometric series for the elliptical equation of the center

3 votes

How can I retro search for time periods with specific planetary alignments?

2 votes

constant semi-major axes of the planets

2 votes

Calculation of Terrestrial and Universal time scale difference, ΔT

2 votes
Accepted

How to calculate Local siderial time that is consistent with Stellarium

2 votes
Accepted

What is the difference between SPICE kernels and JPL Development Ephemerides? Is a DE just a bunch of kernels on a string?

1 vote

If an orbit is shifting due to orbital precession, is it still a Keplerian orbit?

1 vote

Following Meeus's Astronomical Algorithms for the Calculation of JD

1 vote

Orbital Stability of a Double Planet System

1 vote
Accepted

different corresponding coefficients in formulae for a mean element

1 vote

What are the Rules of Significant Figures, Precision, and Uncertainty, Strictly Speaking?

1 vote

Computation of mean sidereal time at Greenwich using solar position algorithm

1 vote

Why are gravitational perturbations stronger at larger semi-major axes?

1 vote

applying nutation to ecliptical coordinates (apparent position of star)

1 vote

Gravitation - Pulling or Pushing force?