538 Friederike

538 Friederike
Discovery
Discovered by	Paul Götz
Discovery date	18 July 1904
Designations
MPC designation	(538) Friederike
Alternative designations	1904 OK
Minor planet category	Main belt (Hygiea family)
Orbital characteristics [1]
	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	5.61 yr (2049.9 d)
Mean anomaly	275.237°
Mean motion	0° 10m 32.232s / day
Inclination	6.5204°
Longitude of ascending node	141.173°
Argument of perihelion	227.779°
Physical characteristics
Mean radius	36.245±1.15 km [1]; 36 km[2]
Mean density	~1.4 g/cm³[3]
Rotation period	1.1 d [4]; 46.728 h (1.9470 d) [1]
Geometric albedo	0.0641 [2]; 0.0641±0.004 [1]
Spectral type	B-type asteroid [5]
Absolute magnitude (H)	9.5

538 Friederike is a minor planet orbiting the Sun.

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.^[6]

References

1 2 3 4 "538 Friederike (1904 OK)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 8 May 2016.
1 2 "Supplemental IRAS Minor Planet Survey". Archived from the original on 2010-01-17.
↑ G. A. Krasinsky; et al. (2002). "Hidden Mass in the Asteroid Belt". Icarus. 158: 98. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837.
↑ "PDS lightcurve data". Archived from the original on 2010-01-17.
↑ T. Mothé-Diniz; et al. (2001). "Rotationally Resolved Spectra of 10 Hygiea and a Spectroscopic Study of the Hygiea Family". Icarus. 152: 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 the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[jpldata-1] 1 2 3 4 "538 Friederike (1904 OK)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 8 May 2016.

[IRAS-2] 1 2 "Supplemental IRAS Minor Planet Survey". Archived from the original on 2010-01-17.

[Krasinsky02-3] G. A. Krasinsky; et al. (2002). "Hidden Mass in the Asteroid Belt". Icarus. 158: 98. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837.

[PDSLightcurve-4] "PDS lightcurve data". Archived from the original on 2010-01-17.

[MD01-5] T. Mothé-Diniz; et al. (2001). "Rotationally Resolved Spectra of 10 Hygiea and a Spectroscopic Study of the Hygiea Family". Icarus. 152: 117. Bibcode:2001Icar..152..117M. doi:10.1006/icar.2001.6618.

[bmps40_2_85-6] 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.