Sky & Telescope - March 2019 - 44
MARCH 2019 OBSERVING
Planetary Almanac
PLANET VISIBILITY Mercury: visible at dusk through the 6th * Venus: visible at dawn all
month * Mars: visible at dusk, sets late evening * Jupiter: rises early morning, visible through dawn
all month * Saturn: visible at dawn all month
Mercury
11
March Sun & Planets
31
21
Date
Declination
Elongation
Magnitude
Diameter
Illumination
Distance
1
22h
45.6m
-7° 53′
-
-26.8
32′ 17″
-
0.991
31
0h
35.8m
+3° 51′
-
-26.8
32′ 02″
-
0.999
1
23h 48.2m
+0° 52′
18° Ev
-0.2
7.7″
39%
0.876
11
23h 44.8m
+2° 17′
8° Ev
+3.6
10.2″
4%
0.658
21
23h
14.4m
-2° 13′
11° Mo
+3.2
10.9″
6%
0.615
31
23h
08.9m
-5° 29′
24° Mo
+0.9
9.5″
27%
0.705
1
20h 03.5m
-19° 33′
41° Mo
-4.1
15.6″
72%
1.070
11
20h 52.7m
-17° 20′
39° Mo
-4.0
14.7″
75%
1.138
21
21h
40.9m
-14° 17′
37° Mo
-4.0
13.9″
78%
1.204
31
22h
27.8m
-10° 34′
35° Mo
-3.9
13.2″
81%
1.268
1
2h
27.7m
+15° 17′
60° Ev
+1.2
5.3″
91%
1.767
16
3h 07.7m
+18° 24′
55° Ev
+1.3
4.9″
93%
1.892
31
3h 48.6m
+20° 57′
50° Ev
+1.4
4.7″
94%
2.012
1
17h 23.6m
-22° 33′
78° Mo
-2.0
36.2″
99%
5.445
31
17h
33.6m
-22° 40′
106° Mo
-2.2
39.7″
99%
4.963
1
19h
15.5m
-21° 52′
52° Mo
+0.6
15.6″
100%
10.632
31
19h
24.3m
-21° 37′
80° Mo
+0.6
16.3″
100%
10.178
Uranus
16
1h 53.1m
+11° 04′
35° Ev
+5.9
3.4″
100%
20.656
Neptune
16
23h 10.9m
-6° 19′
9° Mo
+8.0
2.2″
100%
30.920
Venus
Sun
Mercury
31
16
1
Mars
1
16
31
Venus
Jupiter
Mars
16
Jupiter
Saturn
Saturn
16
Uranus
Neptune
The table above gives each object's right ascension and declination (equinox 2000.0) at 0h Universal Time on selected dates,
and its elongation from the Sun in the morning (Mo) or evening (Ev) sky. Next are the visual magnitude and equatorial diameter.
(Saturn's ring extent is 2.27 times its equatorial diameter.) Last are the percentage of a planet's disk illuminated by the Sun and
the distance from Earth in astronomical units. (Based on the mean Earth-Sun distance, 1 a.u. is 149,597,871 kilometers, or
92,955,807 international miles.) For other dates, see skyandtelescope.com/almanac.
10"
PLANET DISKS have south up, to match the
view in many telescopes. Blue ticks indicate the
pole currently tilted toward Earth.
+40°
22h
20h
18h
16h
14h
12h
RIGHT ASCENSION
Vega
+30°
Mar
20-21
AQUILA
OPHIUCHUS
Mercury
VIRGO
0°
Neptune
6h
4h
Regulus
EC
T
LIP
IC
Pleiades
31
CAPRICORNUS
Fomalhaut
-30°
25
1
13
CANCER
Betelgeuse
Procyon
ORION
Jupiter
Spica
CORVUS
8 am
6 am
4 am
Mar 10
+20°
Uranus
TAURUS
EQUATOR
Sirius
ERIDANUS
HYDRA
CANIS
MAJOR
Antares
SCORPIUS
+30°
ARIES
Rigel
Saturn
SAGITTARIUS
10 am
28
+40°
Mars
LIBRA
-20°
2h
GEMINI
16
AQUARIUS
Venus
-40°
8h
Castor
Pollux
LEO
Arcturus
HERCULES
+10°
10h
BOÖTES
CYGNUS
+20°PEGASUS
Right Ascension
DECLINATION
Mar 1
LOCAL TIME OF TRANSIT
10 pm
2 am
Midnight
8 pm
6 pm
4 pm
2 pm
The Sun and planets are positioned for mid-March; the colored arrows show the motion of each during the month. The Moon is plotted for evening dates in the Americas when it's waxing (right side
illuminated) or full, and for morning dates when it's waning (left side). "Local time of transit" tells when (in Local Mean Time) objects cross the meridian - that is, when they appear due south and at
their highest - at mid-month. Transits occur an hour later on the 1st, and an hour earlier at month's end.
44
M A RCH 2 019 * SK Y & TELESCOPE
-10°
-20°
-30°
-40°
http://www.skyandtelescope.com/almanac
Sky & Telescope - March 2019
Table of Contents for the Digital Edition of Sky & Telescope - March 2019
Contents
Sky & Telescope - March 2019 - Cover1
Sky & Telescope - March 2019 - Cover2
Sky & Telescope - March 2019 - 1
Sky & Telescope - March 2019 - Contents
Sky & Telescope - March 2019 - 3
Sky & Telescope - March 2019 - 4
Sky & Telescope - March 2019 - 5
Sky & Telescope - March 2019 - 6
Sky & Telescope - March 2019 - 7
Sky & Telescope - March 2019 - 8
Sky & Telescope - March 2019 - 9
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