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San
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San istap sta bilong yumi. I gat etpela planet i go nabaut em.
Quick Facts Observation data, Orbital characteristics ...
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Observation data | |
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Mean distance from Earth |
1.496 × 1011 m 8.31 min at light speed |
Visual brightness (V) | −26.74m [1] |
Absolute magnitude | 4.83m [1] |
Spectral classification | G2V |
Metallicity | Z = 0.0177[2] |
Angular size | 31.6′ - 32.7′ [3] |
Adjectives | solar |
Orbital characteristics | |
Mean distance from Milky Way core |
~2.5 × 1020 m 26 000 light-years |
Galactic period | (2.25–2.50) × 108 a |
Velocity | ~2.20 × 105 m/s (orbit around the center of the Galaxy) ~2 × 104 m/s (relative to average velocity of other stars in stellar neighborhood) |
Physical characteristics | |
Mean diameter | 1.392 × 109 m [1] 109 Earths |
Equatorial radius | 6.955 × 108 m [4] 109 × Earth[4] |
Equatorial circumference | 4.379 × 109 m [4] 109 × Earth[4] |
Flattening | 9 × 10−6 |
Surface area | 6.0877 × 1018 m² [4] 11 990 × Earth[4] |
Volume | 1.412 × 1027 m³ [4] 1 300 000 Earths |
Mass | 1.9891 × 1030 kg[1] 332 946 Earths[4] |
Average density | 1.408 × 103 kg/m³[4][1][5] |
Different Densities | Core: 1.5 × 105 kg/m³ lower Photosphere: 2 × 10-4 kg/m³ lower Cromosphere: 5 × 10-6 kg/m³ Avg. Corona: 10 × 10-12kg/m³[6] |
Equatorial surface gravity | 274.0 m/s2 [1] 27.94 g 28 × Earth surface gravity[4] |
Escape velocity (from the surface) |
617.7 km/s [4] 55 × Earth[4] |
Temperature of surface (effective) |
5 778 K [1] |
Temperature of corona |
~5 × 106 K |
Temperature of core |
~15.7 × 106 K [1] |
Luminosity (Lsol) | 3.846 × 1026 W [1] ~3.75 × 1028 lm ~98 lm/W efficacy |
Mean Intensity (Isol) | 2.009 × 107 W m-2 sr-1 |
Rotation characteristics | |
Obliquity | 7.25° [1] (to the ecliptic) 67.23° (to the galactic plane) |
Right ascension of North pole[7] |
286.13° 19 h 4 min 30 s |
Declination of North pole |
+63.87° 63°52' North |
Sidereal Rotation period (at 16° latitude) |
25.38 days [1] 25 d 9 h 7 min 13 s[7] |
(at equator) | 25.05 days [1] |
(at poles) | 34.3 days [1] |
Rotation velocity (at equator) |
7.189 × 103 km/h[4] |
Photospheric composition (by mass) | |
Hydrogen | 73.46 %[8] |
Helium | 24.85 % |
Oxygen | 0.77 % |
Carbon | 0.29 % |
Iron | 0.16 % |
Sulfur | 0.12 % |
Neon | 0.12 % |
Nitrogen | 0.09 % |
Silicon | 0.07 % |
Magnesium | 0.05 % |
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