Sun Fact Canvas
![[Sun]](https://nssdc.gsfc.nasa.gov/planetary/banner/sun.gif)
Sun/Earth Comparison
Bulk parameters
Sun | Earth | Ratio (Sun/Solid ground) | |
|---|---|---|---|
| Mass (1024 kilogram) | 1,988,500. | 5.9724 | 333,000. |
| GM (x 106 km3/s2) | 132,712. | 0.39860 | 333,000. |
| Volume (1012 km3) | 1,412,000. | 1.083 | 1,304,000. |
| Volumetric mean r (km) | 695,700. | 6371. | 109.2 |
| Mean density (kg/m3) | 1408. | 5514. | 0.255 |
| Surface gravity (eq.) (m/s2) | 274.0 | 9.78 | 28.0 |
| Take to the woods speed (kilometer/s) | 617.6 | 11.19 | 55.2 |
| Ellipticity | 0.00005 | 0.0034 | 0.015 |
| Moment of inertia (I/MR2) | 0.070 | 0.3308 | 0.212 |
| Visual magnitude V(1,0) | -26.74 | -3.86 | - |
| Absolute magnitude | +4.83 | ||
| Light (1024 J/s) | 382.8 | ||
| Mass conversion rank (106 kg/s) | 4260. | ||
| Beggarly energy product (10-3 J/kilogram s) | 0.1925 | ||
| Surface emission (106 J/m2s) | 62.94 | ||
| Supernatural typecast | G2 V |
Model values at center of Sun: Central pressure: 2.477 x 10 11 bar Central temperature: 1.571 x 10 7 K Central density: 1.622 x 10 5 kg/m 3
Movement and Orbital parameters
Sun | Earth | Ratio (Sun/Earth) | |
|---|---|---|---|
| Sidereal rotation period (hrs)* | 609.12 | 23.9345 | 25.449 |
| Obliquity to ecliptic (deg.) | 7.25 | 23.44 | 0.309 |
| Speed relative to nearby stars (km/s) | 19.4 |
*This is the adoptive point at 16 deg. latitude - the actual rotation grade varies with latitude L as:
( 14.37 - 2.33 sine 2 L - 1.56 sin 4 L ) deg/day
North Pole of Rotation
Right Ascension: 286.13 Declination : 63.87 Reference Date : 1.5 Jan 2000 (JD 2451545.0)
Lord's Day Observational Parameters
Apparent diameter from Earth At 1 A.U.(seconds of arc) 1919. Maximum (seconds of spark) 1952. Minimum (seconds of discharge) 1887. Distance from Earth Mean (10 6 km) 149.6 Minimum (10 6 km) 147.1 Maximum (10 6 km) 152.1
Solar Magnetic Field
Typical magnetic field strengths for versatile parts of the Sun Polar Field: 1 - 2 Karl Gauss Sunspots: 3000 Karl Friedrich Gauss Prominences: 10 - 100 Gauss Chromospheric plages: 200 Gauss Bright chromospheric network: 25 Gauss Ephemeral (unipolar) active regions: 20 Gauss
Solar Atmosphere
Aboveground Gas Insistency (top of photosphere): 0.868 Bachelor of Medicine Pressure deep down of photosphere (optical depth = 1): 125 Bachelor of Medicine Trenchant temperature: 5772 K Temperature at top of photosphere: 4400 K Temperature at nates of photosphere: 6600 K Temperature at top of chromosphere: ~30,000 K Photosphere thickness: ~500 km Chromosphere thickness: ~2500 klick Sun Spot Cycle: 11.4 yr. Photosphere Composition: Major elements: H - 90.965%, He - 8.889% Insignificant elements (ppm): O - 774, C - 330, Ne - 112, N - 102 Fe - 43, Mg - 35, Silicon - 32, S - 15
Notes on the factsheets - definitions of parameters, units, notes on sub- and superscripts, etc. Directory to other Planetary Fact Sheets 
Writer/Conservator:Dr. David R. Williams, dave.williams@nasa.gov
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NASA Official: Ed Grayzeck, edwin.j.grayzeck@nasa.gov
Lowest Updated: 23 February 2018, DRW
what is the mass of the sun in kg
Source: https://nssdc.gsfc.nasa.gov/planetary/factsheet/sunfact.html
