Template:গ্রহ তথ্যছক/প্লুটো - Wikipedia

# Template:গ্রহ তথ্যছক/প্লুটো

### উইকিপিডিয়া, মুক্ত বিশ্বকোষ থেকে

Pluto
Discovery
Discovered by | Clyde W. Tombaugh
Discovered on | February 18, 1930
Orbital characteristics (Epoch J2000)
Semi-major axis | 5,906,376,272 km 39.481 686 77 AU
Orbital circumference | 36.530 Tm 244.186 AU
Eccentricity | 0.248 807 66
Perihelion | 4,436,824,613 km 29.658 340 67 AU
Aphelion | 7,375,927,931 km 49.305 032 87 AU
Orbital period | 90,613.3055 d (248.09 a)
Synodic period | 366.73 d
Avg. Orbital Speed | 4.666 km/s
Max. Orbital Speed | 6.112 km/s
Min. Orbital Speed | 3.676 km/s
Inclination | 17.141 75° (11.88° to Sun's equator)
Longitude of the ascending node | 110.303 47°
Argument of the perihelion | 113.763 29°
Number of satellites | 3
Physical characteristics
Diameter | 2306±20 km (18% of Earth, or 1423±12 mi)
Surface area | 1.795×107<noinclude> km² (0.033 Earths)
Volume | 7.15×109<noinclude> km³ (0.0066 Earths)
Mass | (1.305±0.007)×1022<noinclude> kg [1] (0.0021 Earths)
Mean density | 2.03±0.06 g/cm³ [2]
Equatorial gravity | 0.58 m/s² (0.059 gee)
Escape velocity | 1.2 km/s
Rotation period | −6.387230 d (6 d 9 h 17 m 36 s)
Rotation velocity | 47.18 km/h (at the equator)
Axial tilt | 119.59° (to orbit) 112.78° (to the ecliptic)
Right ascension of North pole | 133.045±0.02° (8 h 52 min 11 s) [3]
Declination | -6.145±0.02°
Albedo | 0.49–0.66 (varies by 35%) [4] [5]

Surface temp.

min | mean | max
--- | --- | ---
33 K | 44 K | 55 K

Adjective | Plutonian
Atmospheric characteristics
Atmospheric pressure | 0.30 pascals (summer maximum)
Composition | nitrogen, methane

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