| Discovery | |
|---|---|
| Discovered by | Paul Götz |
| Discovery date | 18 July 1904 |
| Designations | |
| MPC designation | (538) Friederike |
| Pronunciation | German: [fʁiːdəˈʁiːkə] |
| Alternative designations | 1904 OK |
| Minor planet category | Main belt (Hygiea family) |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 111.70 yr (40800 d) |
| Aphelion | 3.6924 AU (552.38 Gm) |
| Perihelion | 2.6238 AU (392.51 Gm) |
| Semi-major axis | 3.1581 AU (472.45 Gm) |
| Eccentricity | 0.16919 |
| Orbital period (sidereal) | 5.61 yr (2049.9 d) |
| Mean anomaly | 275.237° |
| Mean motion | 0° 10 32.232 / day |
| Inclination | 6.5204° |
| Longitude of ascending node | 141.173° |
| Argument of perihelion | 227.779° |
| Physical characteristics | |
| Mean radius | 36.245±1.15 km 36 km |
| Mean density | ~1.4 g/cm |
| Synodic rotation period | 1.1 d 46.728 h (1.9470 d) |
| Geometric albedo | 0.0641 0.0641±0.004 |
| Spectral type | B-type asteroid |
| Absolute magnitude (H) | 9.5 |
538 Friederike is a minor planet (an asteroid specifically) orbiting in the asteroid belt. It is a member of the Hygiea family of asteroids.
Photometric observations at the Organ Mesa Observatory in New Mexico during 2012 showed a rotation period of 46.728 ± 0.004 hours with a brightness variation of 0.25 ± 0.02 in magnitude.
References
- (German Names)
- ^ "538 Friederike (1904 OK)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 8 May 2016.
- ^ "Supplemental IRAS Minor Planet Survey". Archived from the original on 19 January 2007.
- G. A. Krasinsky; et al. (2002). "Hidden Mass in the Asteroid Belt". Icarus. 158 (1): 98. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837.
- "PDS lightcurve data". Archived from the original on 19 January 2007.
- T. Mothé-Diniz; et al. (2001). "Rotationally Resolved Spectra of 10 Hygiea and a Spectroscopic Study of the Hygiea Family". Icarus. 152 (1): 117. Bibcode:2001Icar..152..117M. doi:10.1006/icar.2001.6618.
- Pilcher, Frederick (April 2013), "Rotation Period Determinations for 24 Themis, 159 Aemilia 191 Kolga, 217 Eudora, 226 Weringia, 231 Vindobona, and 538 Friederike", The Minor Planet Bulletin, 40 (2): 85–87, Bibcode:2013MPBu...40...85P.
External links
- 538 Friederike at AstDyS-2, Asteroids—Dynamic Site
- 538 Friederike at the JPL Small-Body Database
| Minor planets navigator | |
|---|---|
| Small Solar System bodies | |||||||
|---|---|---|---|---|---|---|---|
| Minor planets |
| ||||||
| Comets | |||||||
| Other | |||||||
_mathilde.jpg){kind=small} | This article about an asteroid native to the asteroid belt is a stub. You can help Misplaced Pages by expanding it. |