Chandarma (pratiik: 
) uu chij hae jon ki dunia ke parkramaa kare hae. Ii 28 se 29 din me dunia ke ek dafe parikrama kare hae. Ii dunia se, average me, 384,000 km (238,900 mi) duur hae.
Quick Facts Designations, Designation ...
Chandarma Chandarma ke ngiich waala side, lunar north pole uppar hae |
|
Designation | Earth I |
|---|
Alternative names | - Luna
- Selene (poetic)
- Cynthia (poetic)
|
|---|
| Adjectives | |
|---|
| Symbol | or |
|---|
|
| Epoch J2000 |
| Perigee | 362600 km
(356400–370400 km) |
|---|
| Apogee | 405400 km
(404000–406700 km) |
|---|
Semi-major axis | 384399 km (1.28 ls, 0.00257 AU) |
|---|
| Eccentricity | 0.0549 |
|---|
Orbital period (sidereal) | 27.321661 d
(27 d 7 h 43 min 11.5 s) |
|---|
Orbital period (synodic) | 29.530589 d
(29 d 12 h 44 min 2.9 s) |
|---|
Average orbital speed | 1.022 km/s |
|---|
| Inclination | 5.145° to the ecliptic |
|---|
Longitude of ascending node | Regressing by one revolution
in 18.61 years |
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Argument of perigee | Progressing by one
revolution in 8.85 years |
|---|
| Satellite of | Earth |
|---|
|
Mean radius | 1737.4 km
(0.2727 of Earth's)[1] |
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Equatorial radius | 1738.1 km
(0.2725 of Earth's) |
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Polar radius | 1736.0 km
(0.2731 of Earth's) |
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| Flattening | 0.0012 |
|---|
| Circumference | 10921 km (equatorial) |
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Surface area | 3.793×107 km2
(0.074 of Earth's) |
|---|
| Volume | 2.1958×1010 km3
(0.02 of Earth's) |
|---|
| Mass | 7.346×1022 kg
(0.0123 of Earth's)[2] |
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Mean density | 3.344 g/cm3
0.606 × Earth |
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Surface gravity | 1.622 m/s2 (5.32 ft/s2)0.1654 g0 |
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Moment of inertia factor | 0.3929±0.0009 |
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Escape velocity | 2.38 km/s
(8600 km/h; 5300 mph) |
|---|
Synodic rotation period | 29.530589 d
(29 d 12 h 44 min 2.9 s; synodic;
solar day) (spin-orbit locked) |
|---|
Sidereal rotation period | 27.321661 d (spin-orbit locked) |
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Equatorial rotation velocity | 4.627 m/s |
|---|
Axial tilt | - 1.5424° to ecliptic
- 6.687° to orbit plane
- 24° to Earth's equator [3]
|
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North pole right ascension | |
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North pole declination | 65.64°[4] |
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| Albedo | 0.136 |
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| Surface temp. |
min |
mean |
max |
| Equator |
100 K[5] |
250 K |
390 K[5] |
| 85°N |
|
150 K |
230 K |
|
| Surface absorbed dose rate | 13.2 μGy/h
(during lunar daytime)[6] |
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| Surface equivalent dose rate | 57.0 μSv/h
(during lunar daytime)[6] |
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Apparent magnitude | - −2.5 to −12.9(mean full moon)
|
|---|
Absolute magnitude (H) | 0.2[7] |
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Angular diameter | 29.3 to 34.1 arcminutes |
|---|
|
Surface pressure | - 10−7 Pa (1 picobar) (day)
- 10−10 Pa (1 femtobar)
(night)
|
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| Composition by volume | |
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|
Close
Iske wajan, agar dunia se copare karaa jaae, khaali dunia ke 1,2% hae. Iske diameter 3,474 km (2,159km) hae, jon dunia ke quarter hae. Ii saur mandal ke paanshwaa sab se barraa chandarma hae.[8] Iske surface ke gravity dunia se compare haali one-sixth hae, aur Mars se compare, khaali aadha hae aur solar sustem ke cjandarma me se duusra sthan me hae ( Jupiter ke lo chandarma ke baad. Chandarma me koi hydrosphere, atmosphere aur magnetic field nai hae. Ii 4.51 saal pahile banaa rahaa.
Chandarma ke surface me me lunar dust hae aur isme dher pahaarr, crater hae. Chandarma me sab time ghaam rahe, uu time ke chhorr ke jab lunar eclipse rahe hae.[9]
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) uu chij hae jon ki dunia ke parkramaa kare hae. Ii 28 se 29 din me dunia ke ek dafe parikrama kare hae. Ii dunia se, average me, 384,000 km (238,900 mi) duur hae. 
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