The Solar System

APPENDIX B 617

Ap

ril

Feb

Jan Dec

Nov

20 h

23 h

0 h

22 h 19 h 18 h^17 h

16 h

15 h

21 h

(^1) h
Equa
tor
Ec
lipt
ic
Mar
ch
Eclip
tic
Milky Way
δ
Deneb
ClusterDouble
Antares
Altair
Milky Way
Solstic
Equ
inox
Ursa
Minor
Draco
Little
Dipper
Polaris Big DipperUrsa
Major
Bootes Arcturus
HerculesM13
BorealisCorona
Vega
Lyra
Cassiopeia
Cepheus
δ
Cygnus
Deneb
ClusterDouble
Pegasus
Andromeda
Aries M31
Aquarius
Triangulum
Pisces
Capricornus
Virgo
Antares
Scorpius
Libra
Sagittarius
Perseus
Algol
AustrinusPiscis
Fomalhaut
Aquila
DelphinusAltair Ophiuchus Serpens
Serpens
Equa
tor
Southern Horizon
Northern Horizon
Eastern Horizon
Western Horizon
SEPTEMBER
Early in Month
Midmonth
End of Month
Months along the ecliptic show the
location of the sun during the year.
Numbers along the celestial equator
show right ascension.
Northern
Hemisphere Sky
9 P.M.
8 P.M.
7 P.M.
May
Apri
l
Feb
Jan Dec
22 h
1 h
2 h
0 h 21 h 20 h^19 h
18 h
17 h
23 h
(^3) h
Ecl
ipt
ic
Marc
h
Equa
Equato tor
r
Solstice
Equinox
Milky Way
Altair
δ
Deneb
ClusterDouble
Milky Way
Draco
Big Dipper
UrsaMajor
M13
Hercules
CoronaBorealis
Polaris
Little Dipper
UrsaMinor
Bootes
Aquila
DelphinusAltair
Serpens
Ophiuchus
Serpens
Vega
Lyra
CassiopeiaCepheus
δ
Deneb Cygnus
ClusterDouble
Pegasus
AndromedaM31
Aries
Triangulum
Pisces
Perseus
Pleiades Algol
Auriga Capella
Taurus
Aldebaran
Aquarius
Sagittarius
Piscis
Fomalhaut Austrinus Capricornus
Cetus
Mira
Southern Horizon
Northern Horizon
Eastern Horizon
Western Horizon
OCTOBER
Early in Month
Midmonth
End of Month
Months along the ecliptic show the
location of the sun during the year.
Numbers along the celestial equator
show right ascension.
Northern
Hemisphere Sky
9 P.M.
8 P.M.
7 P.M.