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126 Velleda - Simple English Wikipedia, the free encyclopedia

126 Velleda

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126 Velleda
Discovery
Discovered by: Paul Henry and Prosper Henry
Discovery date: November 5, 1872
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 403.523 Gm (2.697 AU)
Perihelion: 326.153 Gm (2.180 AU)
Semi-major axis: 364.838 Gm (2.438644[1] AU)
Eccentricity: 0.1060806[1]
Orbital period: 1391.107 d (3.81 a)
Avg. orbital speed: 19.02 km/s
Mean anomaly: 117.027°
Inclination: 2.92451°[1]
Longitude of ascending node: 23.47325°[1]
Argument of perihelion: 327.94065°[1]
Physical characteristics
Dimensions: 44.82 km[1]
Mass: 9.4×1016 kg
Mean density: ? g/cm³
Equatorial surface gravity: 0.0125 m/s²
Escape velocity: 0.0237 km/s
Rotation period: 5.364 ± 0.003 d[2]
Albedo: 0.1723[1]
Temperature: ~178 K
Spectral type: ?
Absolute magnitude: 9.27[1]

126 Velleda is a Main belt asteroid. It is probably a rather common, although big, S-type asteroid. It was found by Paul Henry on November 5, 1872 in Paris, France. It was the first credited asteroid he found. He and his brother Prosper Henry found a total of 14 asteroids.

This asteroid rotates once every 5 hours, 8 hours and 44 minutes. During each rotation the light curve changes by 0.22 magnitudes.[2]

[change] References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 126 Velleda. JPL Small-Body Database Browser. NASA JPL (August 29, 2003). Retrieved on 12 March 2007.
  2. 2.0 2.1 Dovgopol, A. N.; Kruglyi, Iu. N.; Shevchenko, V. G. (1992). "Asteroid 126 Velleda - Rotation period and magnitude-phase curve". Acta Astronomica 42 (1): 67-72. Retrieved on 13 March 2007.


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