6 Hebe
 A three-dimensional model o 6 Hebe based on its licht curve. | |
| Discovery | |
|---|---|
| Discovered bi | Karl Ludwig Hencke |
| Discovery date | Julie 1, 1847 |
| Designations | |
| Pronunciation | /ˈhiːbiː/ HEE-bee |
Named after | Hēbē |
Alternative names | 1947 JB |
Minor planet category | Main belt |
| Adjectives | Hebean |
| Orbital chairactereestics | |
| Epoch November 26, 2005 (JD 2453700.5) | |
| Aphelion | 2.914 AU (435.996 Gm) |
| Perihelion | 1.937 AU (289.705 Gm) |
| 2.426 AU (362.851 Gm) | |
| Eccentricity | 0.202 |
Orbital period | 3.78 a (1379.756 d) |
Average orbital speed | 18.93 km/s |
Mean anomaly | 247.947° |
| Inclination | 14.751° |
Longitude o ascendin node | 138.752° |
Argument o perihelion | 239.492° |
| Proper orbital elements[1] | |
Proper semi-major axis | 2.4252710 AU |
Proper eccentricity | 0.1584864 |
Proper inclination | 14.3511092° |
Proper mean motion | 95.303184 deg / yr |
Proper orbital period | 3.77742 yr (1379.702 d) |
Precession o perihelion | 31.568209 arcsec / yr |
Precession of the ascending node | −41.829042 arcsec / yr |
| Pheesical chairacteristics | |
| Dimensions | 205×185×170 km[2][3][4] 186 km (mean) |
| Mass | 1.28×1019 kg[2] |
Mean density | 3.81±0.26 g/cm³[2] |
Surface gravity | ~0.087 m/s2 |
Escape velocity | ~0.13 km/s |
| 0.3031 d[5] | |
| Albedo | 0.268 (geometric)[3] |
| Temperatur | ~170 K max: ~269 K (-4°C) |
Spectral teep | S-type asteroid |
Apparent magnitude | 7.5[6] to 11.50 |
| 5.71 | |
Angular diameter | 0.26" to 0.065" |
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6 Hebe (/ˈhiːbiː/ HEE-bee) is a lairge main-belt asteroid, containin aroond hauf a percent o the mass o the belt.
References
[eedit | eedit soorce]- ↑ "AstDyS-2 Hebe Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Retrieved 1 October 2011.
- ↑ a b c Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Archived frae the original on 21 October 2013. Retrieved 28 November 2008.
- ↑ a b "Supplemental IRAS Minor Planet Survey". Archived frae the original on 23 Juin 2006. Retrieved 7 November 2014.
- ↑ J. Torppa et al. Shapes and rotational properties of thirty asteroids from photometric data Archived 2015-11-06 at the Wayback Machine, Icarus, Vol. 164, p. 346 (2003).
- ↑ "Planetary Data System Small Bodies Node, lightcurve parameters". Archived frae the original on 14 Juin 2006. Retrieved 7 November 2014.
- ↑ Donald H. Menzel; Jay M. Pasachoff (1983). A Field Guide to the Stars and Planets (2nd ed.). Boston, MA: Houghton Mifflin. p. 391. ISBN 0-395-34835-8.
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