139 Juewa
139 Julewa jẹ́ ìgbàjá ìsọ̀gbé oòrùn kékeré dúdú tí ó sì fẹ̀. Ó jẹ́ àkọ́kọ́ ìsọ̀gbé oòrùn kékeré tí wọ́n máa ṣàwárí rẹ̀ ní orílẹ̀ èdè China. Àlejò Onímọ̀ ìwòràwọ̀, James Craig Watson ọmọ Amẹ́ríkà ní o ṣàwárí rẹ̀ ní Beijing ní Ọjọ́ kẹwá Oṣù kẹ́wá Ọdún 1874.[4][5]
Ìkọ́kọ́wárí and designation
| |
|---|---|
| Kíkọ́kọ́wárí látọwọ́ | James Craig Watson |
| Ọjọ́ ìkọ́kọ́wárí | 10 October 1874 |
Ìfúnlọ́rúkọ
| |
| Minor planet category |
Main belt |
| Àsìkò 31 July 2016 (JD 2457600.5) | |
| Aphelion | 3.26884 AU (489.012 Gm) |
| Perihelion | 2.29261 AU (342.970 Gm) |
| Semi-major axis | 2.78073 AU (415.991 Gm) |
| Eccentricity | 0.17553 |
| Àsìkò ìgbàyípo | 4.64 yr (1693.7 d) |
| Average orbital speed | 17.72 km/s |
| Mean anomaly | 60.2817° |
| Inclination | 10.9127° |
| Longitude of ascending node | 1.83417° |
| Argument of perihelion | 165.566° |
| Ẹ̀gbẹ̀ẹ̀gbẹ́ | 156.60±2.8 km[1] 161.43±7.38 km[2] |
| Àkójọ | 5.54±2.20×1018 kg[2] |
| Iyeìdáméjì ìṣùpọ̀ | 2.51±1.05 g/cm3[2] |
| Equatorial surface gravity | 0.0438 m/s² |
| Equatorial escape velocity | 0.0828 km/s |
| Rotation period | 20.991 h (0.8746 d) |
| Geometric albedo | 0.0557±0.002[1] 0.0444±0.0164[3] |
| Ìgbónásí | ~167 K |
| Spectral type | CP (Tholen)[3] |
| Absolute magnitude (H) | 7.78,[1] 7.924[3] |
Àwọn ìtọ́kasí àtúnṣe
- ↑ 1.0 1.1 1.2 1.3 Yeomans, Donald K., "139 Juewa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, Bibcode:2012P&SS...73...98C, arXiv:1203.4336
, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ 3.0 3.1 3.2 Pravec, P.; et al. (May 2012), "Absolute Magnitudes of Asteroids and a Revision of Asteroid Albedo Estimates from WISE Thermal Observations", Asteroids, Comets, Meteors 2012, Proceedings of the conference held May 16–20, 2012 in Niigata, Japan (1667), Bibcode:2012LPICo1667.6089P. See Table 4.
- ↑ Lutz D. Schmadel, Dictionary of Minor Planet Names, p. 28.
- ↑ "OCCULTATION OF UCAC2 17551271 BY 139 JUEWA". Retrieved 22 November 2012.
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