554 Peraga
Discovery
Discovered byPaul Götz
Discovery siteHeidelberg
Discovery date8 January 1905
Designations
(554) Peraga
PronunciationItalian: [peˈraːɡa]
1905 PS
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc115.51 yr (42190 d)
Aphelion2.7391 AU (409.76 Gm)
Perihelion2.0095 AU (300.62 Gm)
2.3743 AU (355.19 Gm)
Eccentricity0.15364
3.66 yr (1336.3 d)
215.70°
0° 16m 9.84s / day
Inclination2.9349°
295.434°
127.356°
Physical characteristics
Mean radius
47.935±2.05 km[1]
48.23 ± 0.84 km[2]
Mass(6.59 ± 0.66) × 1017 kg[2]
Mean density
1.40 ± 0.15 g/cm3[2]
13.7128 h (0.57137 d)
0.0496±0.005
9.1

    Peraga (minor planet designation: 554 Peraga) is a minor planet orbiting the Sun that was discovered by German astronomer Paul Götz on January 8, 1905, from Heidelberg.

    13-cm radar observations of this asteroid from the Arecibo Observatory between 1980 and 1985 were used to produce a diameter estimate of 101 km.[3]

    References

    1. 1 2 Yeomans, Donald K., "554 Peraga", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 May 2016.
    2. 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
    3. Ostro, S. J.; et al. (August 1985), "Mainbelt asteroids - Dual-polarization radar observations", Science, vol. 229, no. 4712, pp. 442–446, Bibcode:1985Sci...229..442O, doi:10.1126/science.229.4712.442, PMID 17738665.


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