Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Micro moon versus macro moon: Brightness and size   The moon, moonlight, phases of the moon and its relatively simple recurring
cycle has been of interest since time immemorial to the human beings,
navigators, astronomers and astrologers. The fact that its orbit is elliptical
as well its plane is inclined with the plane of rotation of the earth gives
rise to new moon to full moon and solar and lunar eclipses. During the phase of
the full moon, the luminous flux and its apparent size will depend on its
distance from the earth. In case it is at farthest point known as lunar apogee
causes smallest full moon or micro full moon and if it is closest to us termed
as lunar perigee will result in macro full moon, also known as super moon, a
term coined by astrologer Richard Nolle in 1979. The theoretical expressions
for the lunar luminous fluxes on the earth representing the power of lunar
light the earth intercepts in the direction normal to the incidence over an
area of one square meter are derived for two extreme positions lunar apogee and
lunar perigee. The expressions for the apparent sizes of full moons
corresponding to said positions are also mentioned. It is found that full
perigee moon is about 29 percent brighter and 14 percent bigger than the full
apogee moon consistent with the reported values.

11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int