ASA 107 – Celestial Navigation (THEORY - NAVGEN ONLY)
General Questions Comprehensive Resource To Help You
Ace 2026-2027 Exams Includes Frequently Tested Questions
With ELABORATED 100% Correct COMPLETE SOLUTIONS
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1. The period of the Earth's revolution from perihelion to perihelion is the
____________. - Correct Answer: B. anomalistic year
2. The angle at the pole measured through 180° From the prime meridian to the
meridian of a point is
known as ____________. - Correct Answer: C. longitude
3. In low latitudes, the full Moon will always rise at about ____________. -
Correct Answer: C. sunset
4. A variable star is one that ____________. - Correct Answer: A. exhibits a
change in magnitude
5. The largest of the navigational planets is ____________. - Correct Answer:
C. Jupiter
,6. The tropical year differs from which year by 20 minutes? - Correct Answer:
D. Sidereal year
7. A large group of stars revolving around a center is known as a ____________. -
Correct Answer: D. galaxy
8. The line of position determined from a sight with an observed altitude (Ho) of
88°45.0' should be __
__________. - Correct Answer: D. plotted as an arc around the GP of the body
9. In low latitudes, the new Moon will always rise at about ____________. -
Correct Answer: A. sunrise
10. The Milky Way is an example of a ____________. - Correct Answer: B.
galaxy
11. The distance in miles between the circle of equal altitude for the observed
altitude (Ho) and the circle of equal altitude for the computed altitude (Hc) is the
____________. - Correct Answer: C. intercept
12. Sidereal time is used by navigators when ____________. - Correct
Answer: B. used in the form of LHA Aries
13. When determining compass error by an azimuth of Polaris, you enter the
Nautical Almanac with the ____________. - Correct Answer: B. LHA Aries
,14. In high latitudes, celestial observations can be made over a horizon covered
with pack ice by bringing the sun tangent to the ice and ____________. -
Correct Answer: B. using a dip correction based on the height of eye above the ice
15. The angle measured eastward from the vernal equinox along the celestial
equator often expressed
in time units is the ____________. - Correct Answer: B. right ascension
16. The navigational triangle uses parts of two systems of coordinates, one of
which is the horizon system and the other is the ____________. - Correct
Answer: C. celestial equator system
17. In the celestial equator system of coordinates what is NOT equivalent to the
longitude of the Earth system of coordinates? - Correct Answer: D. Zn
18. Which is NOT a side of the celestial navigational triangle? - Correct
Answer: C. Altitude
19. In order for a star to be used for a sight at lower transit, the star must
____________. - Correct Answer: A. be circumpolar
20. Universal time (UTI) is another name for ____________. - Correct Answer:
B. Greenwich mean time
, 21. In low latitudes, a first quarter Moon will always rise at about ____________.
- Correct Answer: B. 1200 LMT
22. Local sidereal time is equal to the ____________. - Correct Answer: C.
LHA of Aries
23. The lunar day is ____________. - Correct Answer: A. longer than a solar
day
24. Perihelion is the point where the Sun ____________. - Correct Answer: A.
is nearest to the Earth
25. The phase correction should be applied to sights of Venus and Mars
____________. - Correct Answer: B. during twilight observations only
26. In the Nautical Almanac provided, when would Jupiter and Saturn be visible in
temperate latitudes
for both evening and morning stars? - Correct Answer: B. 27 March
27. The great circle of the celestial sphere that passes through the zenith, nadir,
and the eastern point
of the horizon is the ____________. - Correct Answer: D. prime vertical
28. In general, the most effective period for observing stars and planets occurs
during the darker limit
General Questions Comprehensive Resource To Help You
Ace 2026-2027 Exams Includes Frequently Tested Questions
With ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
Instant Download Pdf
1. The period of the Earth's revolution from perihelion to perihelion is the
____________. - Correct Answer: B. anomalistic year
2. The angle at the pole measured through 180° From the prime meridian to the
meridian of a point is
known as ____________. - Correct Answer: C. longitude
3. In low latitudes, the full Moon will always rise at about ____________. -
Correct Answer: C. sunset
4. A variable star is one that ____________. - Correct Answer: A. exhibits a
change in magnitude
5. The largest of the navigational planets is ____________. - Correct Answer:
C. Jupiter
,6. The tropical year differs from which year by 20 minutes? - Correct Answer:
D. Sidereal year
7. A large group of stars revolving around a center is known as a ____________. -
Correct Answer: D. galaxy
8. The line of position determined from a sight with an observed altitude (Ho) of
88°45.0' should be __
__________. - Correct Answer: D. plotted as an arc around the GP of the body
9. In low latitudes, the new Moon will always rise at about ____________. -
Correct Answer: A. sunrise
10. The Milky Way is an example of a ____________. - Correct Answer: B.
galaxy
11. The distance in miles between the circle of equal altitude for the observed
altitude (Ho) and the circle of equal altitude for the computed altitude (Hc) is the
____________. - Correct Answer: C. intercept
12. Sidereal time is used by navigators when ____________. - Correct
Answer: B. used in the form of LHA Aries
13. When determining compass error by an azimuth of Polaris, you enter the
Nautical Almanac with the ____________. - Correct Answer: B. LHA Aries
,14. In high latitudes, celestial observations can be made over a horizon covered
with pack ice by bringing the sun tangent to the ice and ____________. -
Correct Answer: B. using a dip correction based on the height of eye above the ice
15. The angle measured eastward from the vernal equinox along the celestial
equator often expressed
in time units is the ____________. - Correct Answer: B. right ascension
16. The navigational triangle uses parts of two systems of coordinates, one of
which is the horizon system and the other is the ____________. - Correct
Answer: C. celestial equator system
17. In the celestial equator system of coordinates what is NOT equivalent to the
longitude of the Earth system of coordinates? - Correct Answer: D. Zn
18. Which is NOT a side of the celestial navigational triangle? - Correct
Answer: C. Altitude
19. In order for a star to be used for a sight at lower transit, the star must
____________. - Correct Answer: A. be circumpolar
20. Universal time (UTI) is another name for ____________. - Correct Answer:
B. Greenwich mean time
, 21. In low latitudes, a first quarter Moon will always rise at about ____________.
- Correct Answer: B. 1200 LMT
22. Local sidereal time is equal to the ____________. - Correct Answer: C.
LHA of Aries
23. The lunar day is ____________. - Correct Answer: A. longer than a solar
day
24. Perihelion is the point where the Sun ____________. - Correct Answer: A.
is nearest to the Earth
25. The phase correction should be applied to sights of Venus and Mars
____________. - Correct Answer: B. during twilight observations only
26. In the Nautical Almanac provided, when would Jupiter and Saturn be visible in
temperate latitudes
for both evening and morning stars? - Correct Answer: B. 27 March
27. The great circle of the celestial sphere that passes through the zenith, nadir,
and the eastern point
of the horizon is the ____________. - Correct Answer: D. prime vertical
28. In general, the most effective period for observing stars and planets occurs
during the darker limit
