Zon Mosaic Pro5 User's Guide Page 95
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Object Databases 95
distance we use is arbitrary, but has been
chosen to be 10 parsecs). As with apparent
magnitude, a lower absolute magnitude
means a brighter body.
Spectral Class: Spectral classes are groups
of stars that have similar characteristic
emission lines in their spectra.
Temperature: This is the star’s surface
temperature, given in degrees Kelvin (to
get a star’s temperature in Celsius, just
subtract 273 from its temperature in
Kelvins). The Sun has a temperature of
about 5700 K.
B-V Colour: This is a way of measuring a
star’s colour. An average star has a B-V
value of around 0. If a star has a negative
B-V value it is on the bluish side of the
spectrum. If it has a positive B-V value it
is on the reddish side of the spectrum. The
more negative or positive a star’s B-V, the
more blue or red it will appear. A star’s
colour is directly related to its
temperature: blue stars are hotter and red
stars are cooler.
Luminosity: Luminosity measures the total
light and energy output of a star. It is
different from apparent magnitude,
because it measures not only visible light,
but also the energy released as infra-red
waves, X-rays, and radio waves.
Extrasolar planet information fields:
If you use the
Options pane
to turn on
markers for
stars with
extrasolar planets, the Info pane for stars
with extrasolar planets will have
additional information fields. This
information will also appear in the Heads-
Up Display (HUD) when you point the
cursor at a star with an extrasolar planet.
Extrasolar mass: The mass of the
extrasolar planet, in relation to the mass of
Jupiter.
Extrasolar semi-major axis: A measure of
the planet’s distance from its central star,
in astronomical units (AU). 1 AU is the
average distance between Earth and the
Sun.
Extrasolar period: The time needed for the
planet to make 1 complete revolution
around its central star.
Extrasolar eccentricity: A measure of the
shape of the extrasolar planet’s orbit. The
larger a planet’s eccentricity, the more that
its distance from its parent star (and also
its surface temperature) will vary
throughout its orbit.
Extrasolar inclination: The tilt of the
planet’s orbit, relative to our viewing
position on Earth.
Note: This is a different definition of
inclination than is used for objects within
our solar system (e.g. comets, asteroids,
satellites, moons) because the tilt is
measured relative to our viewing position,
not to the central body’s equator. See
“Orbital Elements
” on page 163 for the
definition of inclination for objects within
our solar system.
Extrasolar radius: The radius of the
extrasolar planet.
- Starry Night 1
- Table of Contents 3
- 4 Starry Night User’s Guide 4
- Bending Space & Time 5
- 6 Starry Night User’s Guide 6
- Getting Started 7
- 8 Starry Night User’s Guide 8
- Getting Started 9 9
- 10 Starry Night User’s Guide 10
- Getting Started 11 11
- 12 Starry Night User’s Guide 12
- Getting Started 13 13
- 14 Starry Night User’s Guide 14
- Getting Started 15 15
- 16 Starry Night User’s Guide 16
- Getting Started 17 17
- 18 Starry Night User’s Guide 18
- Chapter 2 19
- 20 Starry Night User’s Guide 20
- Basics 21 21
- Pane Page 21
- 22 Starry Night User’s Guide 22
- Basics 23 23
- 24 Starry Night User’s Guide 24
- Basics 25 25
- 26 Starry Night User’s Guide 26
- Basics 27 27
- 28 Starry Night User’s Guide 28
- Basics 29 29
- 30 Starry Night User’s Guide 30
- Basics 31 31
- 32 Starry Night User’s Guide 32
- Appearance of the Sky 33
- 34 Starry Night User’s Guide 34
- Appearance of the Sky 35 35
- 36 Starry Night User’s Guide 36
- Appearance of the Sky 37 37
- 38 Starry Night User’s Guide 38
- Appearance of the Sky 39 39
- 40 Starry Night User’s Guide 40
- Appearance of the Sky 41 41
- 42 Starry Night User’s Guide 42
- Appearance of the Sky 43 43
- 44 Starry Night User’s Guide 44
- Appearance of the Sky 45 45
- 46 Starry Night User’s Guide 46
- Appearance of the Sky 47 47
- 48 Starry Night User’s Guide 48
- Appearance of the Sky 49 49
- 50 Starry Night User’s Guide 50
- Appearance of the Sky 51 51
- 52 Starry Night User’s Guide 52
- Appearance of the Sky 53 53
- 54 Starry Night User’s Guide 54
- Appearance of the Sky 55 55
- 56 Starry Night User’s Guide 56
- Appearance of the Sky 57 57
- 58 Starry Night User’s Guide 58
- Appearance of the Sky 59 59
- 60 Starry Night User’s Guide 60
- Appearance of the Sky 61 61
- 62 Starry Night User’s Guide 62
- Appearance of the Sky 63 63
- 64 Starry Night User’s Guide 64
- Appearance of the Sky 65 65
- 66 Starry Night User’s Guide 66
- Sky Data 67
- 68 Starry Night User’s Guide 68
- Sky Data 69 69
- 70 Starry Night User’s Guide 70
- Sky Data 71 71
- 72 Starry Night User’s Guide 72
- Sky Data 73 73
- 74 Starry Night User’s Guide 74
- Sky Data 75 75
- 76 Starry Night User’s Guide 76
- Sky Data 77 77
- 78 Starry Night User’s Guide 78
- Object Databases 79
- 80 Starry Night User’s Guide 80
- Object Databases 81 81
- 82 Starry Night User’s Guide 82
- Object Databases 83 83
- 84 Starry Night User’s Guide 84
- Object Databases 85 85
- 86 Starry Night User’s Guide 86
- Object Databases 87 87
- 88 Starry Night User’s Guide 88
- Object Databases 89 89
- 90 Starry Night User’s Guide 90
- Object Databases 91 91
- 92 Starry Night User’s Guide 92
- Object Databases 93 93
- 94 Starry Night User’s Guide 94
- Object Databases 95 95
- 96 Starry Night User’s Guide 96
- Object Databases 97 97
- 98 Starry Night User’s Guide 98
- 100 Starry Night User’s Guide 100
- Bending Space & Time 101 101
- 102 Starry Night User’s Guide 102
- Bending Space & Time 103 103
- 104 Starry Night User’s Guide 104
- Bending Space & Time 105 105
- 106 Starry Night User’s Guide 106
- Bending Space & Time 107 107
- 108 Starry Night User’s Guide 108
- Bending Space & Time 109 109
- 110 Starry Night User’s Guide 110
- Bending Space & Time 111 111
- 112 Starry Night User’s Guide 112
- Bending Space & Time 113 113
- 114 Starry Night User’s Guide 114
- Observation Tools 115
- Observation Tools 117 117
- Observation Tools 119 119
- Observation Tools 121 121
- Observation Tools 123 123
- Observation Tools 125 125
- Using your completed list: 126
- Observation Tools 127 127
- Observation Tools 129 129
- Observation Tools 131 131
- Handbox simulator: 132
- Observation Tools 133 133
- Observation Tools 135 135
- Types of Equipment: 136
- Observation Tools 137 137
- Observation Tools 139 139
- Observation Tools 141 141
- Observation Tools 143 143
- Working With Files 145
- Working With Files 147 147
- Working With Files 149 149
- Working With Files 151 151
- Working With Files 153 153
- Working With Files 155 155
- Working With Files 157 157
- Adding Your Own Data 159
- Creating a Calendar: 160
- Adding Your Own Data 161 161
- Adding Your Own Data 163 163
- °, the pericentre occurs 164
- Adding Your Own Data 165 165
- Adding Your Own Data 167 167
- Adding Your Own Data 169 169
- Adding Your Own Data 171 171
- Adding Your Own Data 173 173
- Adding Your Own Data 175 175
- Adding Your Own Data 177 177
- Adding Your Own Data 179 179
- Starry Night Pro Plus 181
- Starry Night Pro Plus 183 183
- Starry Night Pro Plus 185 185
- Starry Night Pro Plus 187 187
- Frequently Asked Questions 189
- 190 Starry Night User’s Guide 190
- 192 Starry Night User’s Guide 192
- 194 Starry Night User’s Guide 194
- 196 Starry Night User’s Guide 196
- 198 Starry Night User’s Guide 198
- Keyboard Shortcuts 199
- 200 Starry Night User’s Guide 200
- 202 Starry Night User’s Guide 202
- 204 Starry Night User’s Guide 204
- 206 Starry Night User’s Guide 206
- 208 Starry Night User’s Guide 208
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