554 Peraga

554 Peraga
Discovery
Discovered byPaul Götz
Discovery siteHeidelberg
Discovery date8 January 1905
Designations
PronunciationItalian: [peˈraːɡa]
1905 PS
Orbital characteristics
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
96.65±1.19 km (composite estimate)
95.87±4.1 km
Mass(5.86 ± 2.18) × 1017 kg (composite estimate)
(1.17±0.12)×1018 kg
Mean density
1.24 ± 0.46 g/cm3
2.54 g/cm3
13.7128 h (0.57137 d)
0.0496±0.005
9.28

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.

Notes

  1. ↑ Calculated from its standard gravitational parameter GM = 0.078±0.008 km3/s2.
  2. ↑ Assuming a diameter of 95.9 km.

References

  1. 1 2 3 4 5 Yeomans, Donald K., "554 Peraga", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 May 2016.
  2. 1 2 3 Carry, B.; Vachier, F.; Berthier, J.; Marsset, M.; Vernazza, P.; Grice, J.; Merline, W. J.; Lagadec, E.; Fienga, A.; Conrad, A.; Podlewska-Gaca, E.; Santana-Ros, T.; Viikinkoski, M.; Hanuš, J.; Dumas, C.; et al. (March 2019). "Homogeneous internal structure of CM-like asteroid (41) Daphne". Astronomy & Astrophysics. 623: A132. arXiv:1901.01890. Bibcode:2019A&A...623A.132C. doi:10.1051/0004-6361/201833898. ISSN 0004-6361. S2CID 84831411.
  3. 1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.
  4. ↑ 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.