बुध

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बुध
Composite image of Mercury taken by MESSENGER probe
Composite image of Mercury taken by MESSENGER
Designations
Pronunciation /ˈmɜrkjəri/
Adjective Mercurian, Mercurial[१]
Orbital characteristics[४]
Epoch J2000
Aphelion
  • 69,816,900 km
  • 0.466 697 AU
Perihelion
  • 46,001,200 km
  • 0.307 499 AU
Semi-major axis
  • 57,909,100 km
  • 0.387 098 AU
Eccentricity 0.205 630[२]
Orbital period
Synodic period 115.88 d[२]
Average orbital speed 47.87 km/s[२]
Mean anomaly 174.796°
Inclination
Longitude of ascending node 48.331°
Argument of perihelion 29.124°
Satellites None
Physical characteristics
Mean radius
Flattening 0[६]
Surface area
  • 7.48×10 km2[५]
  • 0.147 Earths
Volume
  • 6.083×10१० km3[५]
  • 0.056 Earths
Mass
  • 3.3022×10२३ kg[५]
  • 0.055 Earths
Mean density 5.427 g/cm3[५]
Equatorial surface gravity
Escape velocity 4.25 km/s[५]
Sidereal rotation period
Equatorial rotation velocity १०.८९२ km/h (३.०२६ m/s)
Axial tilt 2.11′ ± 0.1′[७]
North pole right ascension
  • 18 h 44 min 2 s
  • 281.01°[२]
North pole declination 61.45°[२]
Albedo
Surface temp. min mean max
0°N, 0°W [११] 100 K 340 K 700 K
85°N, 0°W[११] 80 K 200 K 380 K
Apparent magnitude −2.6[९] to 5.7[२][१०]
Angular diameter 4.5" – 13"[२]
Atmosphere[२]
Surface pressure trace
Composition

बुध सौरमण्डलया छगु ग्रह ख। थ्व ग्रह सूर्द्यया दकले नापंया ग्रह ख। थ्व ग्रह सूर्द्य व शुक्र ग्रहया दथुइ ला। थीथी धर्म व संस्कृतिइ थ्व ग्रहयात थीथी कथं नालेगु याःगु दु। थ्व ग्रह नांगा मिखां हे खनेदु।

लिधंसा[सम्पादन]

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  10. Cite error: Invalid <ref> tag; no text was provided for refs named ephemeris
  11. ११.० ११.१ (19 February 1999) "Near-Surface Temperatures on Mercury and the Moon and the Stability of Polar Ice Deposits". Icarus 141: 179–193. DOI:10.1006/icar.1999.6175. Figure 3 with the "TWO model"; Figure 5 for pole. 

स्वयादिसँ[सम्पादन]

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