.png) A three-dimensional model of 847 Agnia based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | G. N. Neujmin |
| Discovery site | Simeis |
| Discovery date | 2 September 1915 |
| Designations | |
| (847) Agnia | |
| 1915 XX | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.53 yr (40006 d) |
| Aphelion | 3.0472 AU (455.85 Gm) |
| Perihelion | 2.5158 AU (376.36 Gm) |
| 2.7815 AU (416.11 Gm) | |
| Eccentricity | 0.095516 |
| 4.64yr (1694.4d) | |
| 208.04° | |
| 0° 12m 44.892s / day | |
| Inclination | 2.4817° |
| 270.935° | |
| 130.341° | |
| Earth MOID | 1.52345 AU (227.905 Gm) |
| Jupiter MOID | 2.31009 AU (345.585 Gm) |
| TJupiter | 3.325 |
| Physical characteristics | |
| 14.02±0.85km | |
| 14.827 h (0.6178 d) | |
| 0.1720±0.022 | |
| 10.29 | |
847 Agnia is aminor planet orbiting theSun. It is approximately 28 kilometers in diameter.[2]
The spectrum of this object indicates that it is anS-type asteroid with both low and highcalcium forms ofpyroxene on the surface, along with less than 20%olivine. The high-calcium form of pyroxene forms 40% or more of the total pyroxene present, indicating a history ofigneous rock deposits. This suggests that theasteroid underwent differentiation by melting, creating a surface ofbasalt rock.[3]
847 Agnia is the namesake of theAgnia family of asteroids that share similarorbital elements and physical properties. The members of this family, including 847 Agnia, most likely formed from the breakup of abasalt object, which in turn was spawned from a larger parent body that had previously undergoneigneous differentiation. Other members of this family include1020 Arcadia,1228 Scabiosa,2401 Aehlita, and3395 Jitka[3]
Photometric observations of this asteroid collected during 2004–2005 show arotation period of 14.827 ± 0.001 hours with a brightness variation of 0.45 ± 0.03magnitude.[4]
_mathilde.jpg) | This article about an asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
