Galaxy Name

Magnitude

Visual

• Milky way

—

• Large Magellanic

Cloud

0.9

• Small Magellanic

Cloud

2.5

• Ursa Minor

Dwarf

11.9

• Sculptor

Dwarf

80

• Draco

Dwarf

10.9

• Formax

System

8.3

• Leo -II

System

12.04

• Leo -I

System

12.0

• N. G.C

6822

8.9

• N.G.C.

147

9.73

• N.G.C.

185

10.1

• N .G.C.

205

8.17

• N.G.C.

2 21 (M 32)

8.16

• IC

1613

9.61

• Andromeda

Galaxy

3.47

• N.G.C. 598

(M 33)

5.79

• Maffel

I

11.0

• Average distance

3,84,365 km Diameter: 3,474 km

• Ratio of mass in reference to Earth  Density

1:81.30

• (with reference to water)  Density

3.3464 kg/metre³

• Sun

0.116

• Sidereal Month

27 days, 7 hrs, 43.25 minutes

• Synodic Month

29 days, 12 hrs, 44 minutes

• Rotation on its own axis

27 days, 7 hrs, 43 minutes, 11.47sec.

• Atmosphere

Absent

• Highest mts. Peak

35,000 (Libtney, situated at Moon’s south pole).

• Time taken by light to reach the earth.

1.3 seconds.

• Speed of Rotation at its own axis

2287 miles per hrs.

• Approximate age of Earth

4600,000,000, years,

• Total surface area

510,072,000 km²

• Total land area

153,000,000 km²

• Water area

71% of the total land surface 357,100,000 km²

• Average density

5.52 gm per cub.cm.

• Equatorial diameter

12,756 km

• Polar diameter

12,714 km

• Necessary escape velocity to cross the gravitational attraction of the Earth

11.2 km/sec.
Ve locity of a rocket to go against the gravitational attraction of the Earth 8 km /sec.

• Distance from Moon

3,84,365 km
Maximum height of the earth from M.S.L. 8848 m (Mount Everest)

• Maximum depth of sea from M.S.L

11,033 metro (Mariana Trench)

• Lowest part of the earth surface

396 metre (Dead Sea)

• Rotational period at its own axis

23 hrs, 56 minutes 4.091 sec.

• Revolution of earth round the Sun

365 day, 5 hrs, 48 minutes, 45.51 second

• Satellite of Earth

Moon

• Inclination at its own axis

23*-27

• Average distance from Sun

149,597,887.5 km

• Diameter

11,102 km

• Mass

4.867 × 102²⁴ kg

• Volume

92.843 × 10¹⁰ km³

• Mean Radius

6052 km

• Mean Density

5204 kg/metre³

• Mean distance from the Sun

108.2 million km

• Greatest distance from the Sun (Aphelion)

108.9 million km

• Least distance from the Sun

107.5 million km (Perihelion)

• Rotational period

243.7 days

• Revolutional period (Sidereal period)

224.7 days earth days

• Inclination of orbit

3.39°

• Mean surface temperature

464°C

• Mean surface pressure

92 bars

• No. of Satellites

Nil

• Diameter

4878 km

• Mass

3.64 × 1020 tons (3.3 10 kg) (About 5% of the earth)

• Volume

2.15 × 1021 cube metre (About 6% of the earth)

• Average density

340 pound/cubic feet

• Surface temperature

280° to 800°F (–175 to 425°C)

• Surface atmospheric pressure

2 × 1012 millibar

• Greatest distance from the earth

142.6 million miles (229.4 million km)
Greatest distance from the Sun (Aphelion) 43 million miles (70 million km)
Least distance from the Sun (Perihelion) 29 million miles (46.5 million km)
Revolution period

• (Sidereal year) Rotational period

87.97 earth days

• (Sidereal day)

58.65 earth days

• No. of Satellites

Nil

• Diameter

6787 km

• Mass

11% of the earth

• Volume

15% of the earth

• Density

71% of the earth

• Mean distance from the Sun

141,600,000 miles

• Greatest distance from the earth 62,900,000 milesLeast distance from the earth

34,600,000 miles

• Sidereal revolution period

686.98 days or 687 days

• Sidereal day

24 hrs, 27 minutes and 23 seconds

• Surface atmospheric pressure

6 to 11 mb.

• Satellites

Two

• Diameter

1,42,22 km

• Mass

1898.63 × 10²⁴ kg

• Volume

143.128 × 10¹⁰ km

• Radius

69,911 km

• Mean equatorial

71,492 km

• Mean polar

66,854 km

• Density

1326 kg/metre³

• Average distance from Sun

778.4 million km

• Greatest distance from Sun

816.0 million km (Aphelion)

• Least distance from Sun

740.6 million km (Perihelion)

• Sideredal period of revolution

11.862 earth years

• Rotational period at equator

9 hrs. 50 minutes, 30 second

• Obliquity

3.12°

• Average temperature

144°C

• Satellites: 63

• Mass

568.46 × 10²⁴ kg

• Volume

82,713 × 10¹⁰ km

• Mean radius

58,322 km³

• Equational radius

60268 km

• Polar radius

34,364 km

• Average density

687 kg/m³

• Mean orbital velocity

9.66 km /second

• Mean distance from Sun

142.68 crore km

• Greatest distance from the Sun

150.64 crore km (Aphelion)

• Least distance from the Sun

134.76 crore km

• Sidereal period of revolution

29.457 earth years

• Rotational period

10.5 hrs.

• Average temperature

176°C

• Satellites

60

• Diameter

51,400 km

• Mass

86.83 × 10²⁴ kg

• Volume

6.833 × 10¹⁰ km

• Mean radius

25,362 km

• Mean density

1,318 kg/metre³

• Mean distance from the Sun

2.8710 billion km

• Greatest distance from the Sun (Aphelion)

3.0052 billion km

• Least distance from the Sun (Perihelion)

2.7340 billion km

• Sidereal period of revolution

84.011 earth years

• Rotational period

17.24 hrs.

• Obliquity

97.86°

• Satellites

27

• Mass

10243 × 10²⁴ kg

• Volume

6.254 × 10¹⁰ km

• Mean radius

24.624 km

• Mean density

1638 kg/metre³

• Surface gravity

11.00 metre/second²

• Mean orbital velocity

5.48 km/second

• Mean distance from the Sun

4.4983 billon km

• Greatest (Aphelion)

4.5352 billion km

• Least (Perihelion)

4.4580 billion km

• Sidereal period of revolution

164.79 earth years

• Rotational period

16.11 hrs.

• Mean temperature

215°C

• Satellites

13