Observing Challenges for March

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Year Beginner Intermediate Advanced Lunar
2022 Messier 67
Open cluster in Cancer
6th magnitude
30’ apparent size
Messier 105
Elliptical galaxy in Leo
Largest elliptical galaxy in the Messier catalogue
10th Magnitude
5.4’ x 4.8’ apparent size
NGC 3444
Spiral galaxy in Leo
15th magnitude
1.4’ x 0.2’ apparent size
Crater Jansen
Impact Crater on the north part of Mare Tranquillitatis
600m deep
24km in diameter
2021 NGC 2392
Planetary Nebula in Gemini
~6500ly away
Known as the “Clown-faced Nebula”
48”x48” apparent size
NGC 2440
Planetary Nebula in Puppis
~4000ly away
74”x42” apparent size
Palomar 1
Globular Cluster in Cepheus
~36,000 ly away
2.8’ apparent size
Fra Mauro
Remains of a walled plain whose centre is intersected by longitudinal clefts
East of Mare Insularum and Mare Cognitum


Messier 65
Also catalogued as NGC3623
35MLy away in Leo
Part of the “Leo triplet”
10.25 apparent magnitude

NGC 2438
Planetary nebula in Puppis
2900ly away
10.8 Apparent magnitude
1.1’ in apparent size

Palomar 4
Globular Cluster in Ursa Major
At least 65,000ly away, further than SagDEG satellite galaxy.
Originally believed to be a dwarf galaxy named “Ursa Major Dwarf”

Crater Aristoteles
Impact creator on the southern edge of Mare Frigoris
87km in diameter
3.3km deep



Messier 78
NGC 2068
Emission Nebula in Orion
About 8th magnitude in brightness
Roughly 8’ in size
Located about 2.5 ̊ of Alnitak

IC 418
AKA Raspberry Nebula
Planetary Nebula in Lepus
Approximately 9.3 in magnitude
It is rather bright, but tiny at only 12” in apparent size

Arp 82
Pair of interacting galaxies in Cancer
Individually catalogued as NGC2535 & 2536
13.3rd and 14.7th mag

Crater Bailly
Huge impact scar on the SW limb of the moon
303km in diameter — that’s over 9% the diameter of the moon
Classified as a walled plain
Best observed on lunar days 13 and 23-24, but highly foreshortened.



Messier 44 is an open cluster in the constellation Cancer
It is also known as the Beehive Cluster

NGC 3079
A Galaxy in Ursa Major
11 th Magnitude
Bonus for imagers and large scopes:
Twin Quasars: Gravitationally lensed quasar in the same field as NGC 3079, 17 th Magnitude

A planetary nebula in Gemini
Also known as Mink 1-7
13 th Magnitude

Crater Cepheus
We are all familiar with the constellation Cepheus.
Can you find the crater of the same name on the Moon?