Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Discovery of a Nearby M Dwarf   We report the discovery of a nearby M dwarf star, found accidentally while
observing the old nova DN Gem at the Wise Observatory. The star is designated
1200-05296925 in the PMM USNO-A1.0 catalogue and its coordinates, calculated
for 1997 November 27 are: RA=6 55 05.13 Dec = +32 09 54.1 (Equinox J2000, Epoch
J1997.90). Astrometric measurements for the star yielded a yearly proper motion
rate of 0.155$\pm$0.002 arcseconds in right ascension and negligible yearly
proper motion rate in declination. The apparent V magnitude of the star was
measured as m_V=13.87$\pm$0.16 mag and spectral identification yielded a
spectral type of M3.5Ve$\pm$0.5 subclasses. Using relations between spectral
type and absolute V magnitude in M dwarfs, we arrive at an absolute magnitude
of M_V=12.3^{+1.2}_{-1.1} mag, which corresponds to a distance of
21^{+15}_{-10} pc.

32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg